/* === LEAFSENSE UI - GLASSMORPHISM + SOFT MINIMAL === */

/* --- CSS Variables for Theme System --- */
:root {
    /* Primary Colors - Nature / Plant Trust */
    --primary: #2E7D32;
    --primary-dark: #1B5E20;
    --primary-light: #4CAF50;
    --primary-rgb: 46, 125, 50;

    /* Accent */
    --accent: #FF8F00;
    --accent-dark: #EF6C00;
    --accent-light: #FFB300;
    --accent-rgb: 255, 143, 0;

    /* Semantic Colors */
    --success: #2E7D32;
    --success-rgb: 46, 125, 50;
    --warning: #F59E0B;
    --warning-rgb: 245, 158, 11;
    --danger: #D32F2F;
    --danger-rgb: 211, 47, 47;

    /* Light Theme */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f9f5;
    --bg-tertiary: #e8f0e8;
    --bg-glass: rgba(255, 255, 255, 0.7);
    --bg-glass-darker: rgba(255, 255, 255, 0.9);

    --text-primary: #0f1a0f;
    --text-secondary: #3a5a3a;
    --text-muted: #6b8a6b;
    --text-inverse: #ffffff;

    --border-color: rgba(0, 0, 0, 0.08);
    --border-color-strong: rgba(0, 0, 0, 0.15);

    /* Effects */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 40px rgba(var(--primary-rgb), 0.15);

    /* Glassmorphism */
    --glass-blur: blur(10px);
    --glass-border: 1px solid rgba(255, 255, 255, 0.3);

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* --- Dark Theme Variables --- */
[data-theme="dark"] {
    --primary: #66BB6A;
    --primary-dark: #4CAF50;
    --primary-light: #81C784;
    --primary-rgb: 102, 187, 106;
    --accent: #FFB300;
    --accent-dark: #FF8F00;
    --accent-light: #FFCA28;
    --accent-rgb: 255, 179, 0;

    --bg-primary: #0a120a;
    --bg-secondary: #121e12;
    --bg-tertiary: #1c2e1c;
    --bg-glass: rgba(18, 30, 18, 0.7);
    --bg-glass-darker: rgba(18, 30, 18, 0.9);

    --text-primary: #e8f5e9;
    --text-secondary: #a5d6a7;
    --text-muted: #6b9a6b;
    --text-inverse: #0a120a;

    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-strong: rgba(255, 255, 255, 0.15);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5);

    --glass-border: 1px solid rgba(255, 255, 255, 0.1);

    --success-rgb: 102, 187, 106;
    --danger: #EF5350;
    --danger-rgb: 239, 83, 80;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    overflow-x: hidden;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background var(--transition-base), color var(--transition-base);
    overflow-x: hidden;
    position: relative;
    -webkit-text-size-adjust: 100%;
}

.theme-switching,
.theme-switching * {
    transition: none !important;
}

/* --- Animated Background --- */
.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
}

.animated-bg::before {
    content: '';
    position: absolute;
    width: min(600px, 80vw);
    height: min(600px, 80vw);
    border-radius: 50%;
    background: radial-gradient(circle, rgba(var(--primary-rgb), 0.15), transparent 70%);
    top: -200px;
    right: -100px;
    animation: float-orb 20s ease-in-out infinite;
}

.animated-bg::after {
    content: '';
    position: absolute;
    width: min(500px, 70vw);
    height: min(500px, 70vw);
    border-radius: 50%;
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.12), transparent 70%);
    bottom: -150px;
    left: -100px;
    animation: float-orb 25s ease-in-out infinite reverse;
}

@keyframes float-orb {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(50px, -50px) scale(1.05);
    }

    50% {
        transform: translate(100px, 20px) scale(0.95);
    }

    75% {
        transform: translate(30px, 50px) scale(1.02);
    }
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(var(--primary-rgb), 0.12), transparent),
        radial-gradient(ellipse 60% 40% at 100% 0%, rgba(var(--accent-rgb), 0.08), transparent),
        radial-gradient(ellipse 50% 50% at 0% 100%, rgba(var(--success-rgb), 0.06), transparent);
    pointer-events: none;
    animation: gradient-shift 30s ease infinite;
}

@keyframes gradient-shift {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.8;
    }
}

body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    background-image: radial-gradient(rgba(var(--primary-rgb), 0.05) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
}

[data-theme="dark"] body::before {
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(var(--primary-rgb), 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 100% 0%, rgba(var(--accent-rgb), 0.1), transparent),
        radial-gradient(ellipse 50% 50% at 0% 100%, rgba(46, 125, 50, 0.08), transparent);
}

[data-theme="dark"] body::after {
    background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

[data-theme="dark"] .animated-bg::before {
    background: radial-gradient(circle, rgba(var(--primary-rgb), 0.2), transparent 70%);
}

[data-theme="dark"] .animated-bg::after {
    background: radial-gradient(circle, rgba(var(--accent-rgb), 0.15), transparent 70%);
}

/* === FLOATING PARTICLES (Leaf Emojis) === */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
    perspective: 1000px;
}

.particle {
    position: absolute;
    will-change: transform, opacity;
    user-select: none;
    bottom: -10vh;
    line-height: 1;
    cursor: default;
}

.particle.layer-back {
    z-index: 1;
    filter: blur(2px) opacity(0.4);
    mix-blend-mode: soft-light;
}

.particle.layer-mid {
    z-index: 2;
    filter: opacity(0.4);
    text-shadow: 0 0 15px rgba(var(--primary-rgb), 0.3);
}

.particle.layer-front {
    z-index: 3;
    filter: opacity(0.6) drop-shadow(0 5px 15px rgba(0, 0, 0, 0.1));
    text-shadow: 0 0 20px rgba(var(--accent-rgb), 0.4);
}

@keyframes float-up {
    0% {
        transform: translateY(0) rotate(0deg) scale(0.8);
        opacity: 0;
    }

    10% {
        opacity: var(--p-opacity);
    }

    90% {
        opacity: var(--p-opacity);
    }

    100% {
        transform: translateY(-120vh) rotate(var(--p-rotation)) scale(var(--p-scale));
        opacity: 0;
    }
}

@keyframes sway {

    0%,
    100% {
        margin-left: -25px;
    }

    50% {
        margin-left: 25px;
    }
}

/* --- Content Padding --- */
main {
    padding-top: 10px;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

::selection {
    background: rgba(var(--primary-rgb), 0.2);
    color: var(--primary-dark);
}

/* --- Typography --- */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-sans);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

h4 {
    font-size: 1.25rem;
}

p {
    color: var(--text-secondary);
}

.text-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Container --- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* --- Glass Card --- */
.glass-card {
    background: var(--bg-glass);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

/* ==================== NAVIGATION ==================== */
.navbar {
    position: fixed;
    top: var(--space-md);
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - var(--space-xl) * 2);
    max-width: 1200px;
    z-index: 1000;
    padding: var(--space-md) var(--space-xl);
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(10px) saturate(180%);
    -webkit-backdrop-filter: blur(10px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-xl);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.08),
        0 4px 16px rgba(0, 0, 0, 0.04),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    transition: all var(--transition-base);
}

[data-theme="dark"] .navbar {
    background: rgba(18, 30, 18, 0.75);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.3),
        0 4px 16px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.navbar.scrolled {
    top: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    box-shadow:
        0 10px 40px rgba(0, 0, 0, 0.12),
        0 6px 20px rgba(0, 0, 0, 0.06);
}

[data-theme="dark"] .navbar.scrolled {
    box-shadow:
        0 10px 40px rgba(0, 0, 0, 0.4),
        0 6px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--text-primary);
    transition: transform var(--transition-base);
}

.nav-brand:hover {
    transform: scale(1.02);
    color: var(--text-primary);
}

.nav-logo {
    width: 36px;
    height: 36px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.nav-link.active {
    color: var(--primary);
    background: rgba(var(--primary-rgb), 0.1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: none;
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 1.15rem;
    transition: all var(--transition-base);
}

.theme-toggle:hover {
    background: var(--bg-glass);
    color: var(--primary);
    transform: rotate(15deg);
}

/* Sun/Moon icon toggling */
.theme-toggle .fa-sun {
    display: none;
}

.theme-toggle .fa-moon {
    display: inline-block;
}

[data-theme="dark"] .theme-toggle .fa-sun {
    display: inline-block;
}

[data-theme="dark"] .theme-toggle .fa-moon {
    display: none;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: var(--space-sm);
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(var(--primary-rgb), 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(var(--primary-rgb), 0.5);
    color: white;
}

.btn-secondary {
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    border: 1px solid var(--border-color-strong);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    border-color: var(--primary);
    color: var(--text-primary);
}

[data-theme="dark"] .btn-secondary {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: rgba(var(--primary-rgb), 0.1);
    transform: translateY(-2px);
    color: var(--primary);
}

.btn-white {
    background: white;
    color: var(--primary-dark);
}

.btn-white:hover {
    background: var(--bg-secondary);
    transform: translateY(-2px);
    color: var(--primary-dark);
}

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1.1rem;
}

.btn-sm {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.875rem;
}

/* ==================== HERO SECTION ==================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(80px + var(--space-3xl)) 0 var(--space-3xl);
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(var(--primary-rgb), 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(var(--accent-rgb), 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 100%, rgba(var(--primary-rgb), 0.1) 0%, transparent 50%);
}

[data-theme="dark"] .hero-gradient {
    background:
        radial-gradient(circle at 20% 50%, rgba(var(--primary-rgb), 0.2) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(var(--accent-rgb), 0.15) 0%, transparent 50%);
}

.hero-pattern {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(var(--border-color) 1px, transparent 1px);
    background-size: 30px 30px;
    opacity: 0.5;
}

.hero-container {
    position: relative;
    z-index: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    text-align: center;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-lg);
    border: 1px solid rgba(var(--primary-rgb), 0.2);
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
    max-width: 680px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    justify-content: center;
    margin-bottom: var(--space-2xl);
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
}

.hero-stat {
    display: flex;
    flex-direction: column;
}

.hero-stat .stat-value {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--text-primary);
}

.hero-stat .stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.hero-stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color-strong);
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-muted);
    font-size: 0.875rem;
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

/* ==================== SECTIONS ==================== */
section {
    padding: var(--space-3xl) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-3xl);
}

.section-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
    border: 1px solid rgba(var(--primary-rgb), 0.2);
}

.section-title {
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* ==================== FEATURES ==================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
    gap: var(--space-xl);
}

.feature-card {
    padding: var(--space-xl);
    background: var(--bg-glass);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    font-size: 1.5rem;
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.feature-card p {
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ==================== HOW IT WORKS ==================== */
.steps-container {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.step {
    flex: 1;
    min-width: 250px;
    max-width: 300px;
    text-align: center;
}

.step-number {
    font-size: 4rem;
    font-weight: 800;
    color: var(--primary);
    opacity: 0.2;
    line-height: 1;
    margin-bottom: var(--space-md);
}

.step-content {
    padding: var(--space-xl);
    background: var(--bg-glass);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.step-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
    font-size: 1.5rem;
    border-radius: var(--radius-full);
    margin: 0 auto var(--space-lg);
}

.step-content h3 {
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

.step-content p {
    font-size: 0.9rem;
}

.step-connector {
    display: flex;
    align-items: center;
    padding-top: 60px;
    color: var(--border-color-strong);
    font-size: 1.5rem;
    width: 60px;
    justify-content: center;
}

/* ==================== PLANTS / METRICS BADGES ==================== */
.plants-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
}

.plant-badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-lg);
    background: var(--bg-glass);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all var(--transition-base);
    cursor: default;
    min-width: 100px;
}

.plant-badge:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    color: var(--primary);
}

.plant-badge .plant-emoji {
    font-size: 1.5rem;
}

/* ==================== CTA SECTION ==================== */
.cta-section {
    padding: var(--space-2xl) 0;
}

.cta-card {
    position: relative;
    padding: var(--space-3xl);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    text-align: center;
}

.cta-card h2 {
    color: white;
    margin-bottom: var(--space-md);
}

.cta-card p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.125rem;
    margin-bottom: var(--space-xl);
}

.cta-decoration {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.cta-circle {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
}

.cta-circle-1 {
    width: 300px;
    height: 300px;
    top: -100px;
    right: -100px;
}

.cta-circle-2 {
    width: 200px;
    height: 200px;
    bottom: -50px;
    left: -50px;
}

.cta-circle-3 {
    width: 100px;
    height: 100px;
    top: 50%;
    left: 30%;
}

/* ==================== PAGE HEADER (Insights/About) ==================== */
.page-section {
    padding: calc(80px + var(--space-2xl)) 0 var(--space-3xl);
}

.page-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-3xl);
}

.page-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--space-md);
    border: 1px solid rgba(var(--primary-rgb), 0.2);
}

.page-header h1 {
    margin-bottom: var(--space-md);
}

.page-header p {
    font-size: 1.125rem;
}

/* ==================== GLASS SECTIONS (Insights/About) ==================== */
.glass-section {
    padding: var(--space-2xl);
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(5px) saturate(150%);
    -webkit-backdrop-filter: blur(5px) saturate(150%);
    border: 1px solid rgba(255, 255, 255, 0.4);
    border-radius: var(--radius-2xl);
    margin-bottom: var(--space-2xl);
    box-shadow:
        0 4px 24px rgba(0, 0, 0, 0.04),
        0 2px 8px rgba(0, 0, 0, 0.02),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.glass-section:hover {
    transform: translateY(-2px);
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.08),
        0 4px 16px rgba(0, 0, 0, 0.04);
}

[data-theme="dark"] .glass-section {
    background: rgba(18, 30, 18, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow:
        0 4px 24px rgba(0, 0, 0, 0.15),
        0 2px 8px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

[data-theme="dark"] .glass-section:hover {
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.25),
        0 4px 16px rgba(0, 0, 0, 0.15);
}

.glass-section-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.glass-section-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    font-size: 1.5rem;
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.glass-section-header h2 {
    font-size: 1.5rem;
    margin-bottom: var(--space-xs);
}

.glass-section-header p {
    font-size: 0.95rem;
}

/* ==================== DIAGNOSE PAGE ==================== */
.diagnose-page {
    padding: calc(80px + var(--space-2xl)) 0 var(--space-3xl);
}

.upload-card {
    max-width: 640px;
    margin: 0 auto var(--space-3xl);
    padding: var(--space-2xl);
    background: var(--bg-glass);
    backdrop-filter: blur(10px) saturate(150%);
    -webkit-backdrop-filter: blur(10px) saturate(150%);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-2xl);
    box-shadow:
        0 4px 24px rgba(0, 0, 0, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.6);
}

[data-theme="dark"] .upload-card {
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow:
        0 4px 24px rgba(0, 0, 0, 0.2),
        inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.drop-zone {
    border: 2.5px dashed var(--border-color-strong);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl) var(--space-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    background: var(--bg-secondary);
    margin-bottom: var(--space-xl);
}

.drop-zone:hover,
.drop-zone.drag-over {
    border-color: var(--primary);
    background: rgba(var(--primary-rgb), 0.05);
}

.drop-zone-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.drop-zone-text h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.drop-zone-text p {
    font-size: 0.88rem;
    color: var(--text-muted);
}

.drop-zone-text .browse-link {
    color: var(--primary);
    font-weight: 600;
    cursor: pointer;
}

.file-input-hidden {
    display: none;
}

.image-preview-container {
    display: none;
    margin-bottom: var(--space-lg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    position: relative;
}

.image-preview-container.active {
    display: block;
}

.image-preview-container img {
    width: 100%;
    max-height: 300px;
    object-fit: contain;
    background: var(--bg-tertiary);
}

.file-info {
    padding: var(--space-md);
    background: var(--bg-tertiary);
    font-size: 0.85rem;
    color: var(--text-muted);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.file-info .remove-file {
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    font-family: inherit;
}

.submit-btn {
    width: 100%;
    justify-content: center;
}

.submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

/* Sample Gallery */
.samples-section {
    max-width: 640px;
    margin: 0 auto;
}

.samples-section h3 {
    text-align: center;
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.samples-subtitle {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: var(--space-xl);
}

.samples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--space-md);
}

.sample-card {
    background: var(--bg-glass);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-base);
}

.sample-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}

.sample-card img {
    width: 100%;
    height: 120px;
    object-fit: cover;
}

.sample-card p {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
}

/* ==================== RESULT PAGE ==================== */
.result-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

.result-image-card {
    background: var(--bg-glass);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.result-image-card img {
    width: 100%;
    max-height: 420px;
    object-fit: contain;
    background: var(--bg-tertiary);
}

.result-image-info {
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.result-details-card {
    background: var(--bg-glass);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    box-shadow: var(--shadow-md);
}

.result-header {
    margin-bottom: var(--space-xl);
}

.result-header h2 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: var(--space-xs);
}

.result-plant-name {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

.severity-badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: var(--space-sm);
}

.severity-healthy {
    background: rgba(var(--success-rgb), 0.1);
    color: var(--success);
}

.severity-mild {
    background: rgba(var(--warning-rgb), 0.15);
    color: var(--warning);
}

.severity-severe {
    background: rgba(var(--danger-rgb), 0.15);
    color: var(--danger);
}

.confidence-section {
    margin-bottom: var(--space-xl);
}

.confidence-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
    font-size: 0.9rem;
    font-weight: 600;
}

.confidence-bar {
    height: 12px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.confidence-fill {
    height: 100%;
    border-radius: 6px;
    background: linear-gradient(90deg, var(--primary), var(--primary-light));
    width: 0;
    transition: width 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.top-predictions {
    margin-bottom: var(--space-xl);
}

.top-predictions h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.prediction-chip {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-sm);
    font-size: 0.88rem;
}

.prediction-chip .pred-name {
    font-weight: 500;
}

.prediction-chip .pred-conf {
    font-weight: 700;
    color: var(--primary);
}

.disease-info-box {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.disease-info-box h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.info-row {
    margin-bottom: var(--space-md);
}

.info-row:last-child {
    margin-bottom: 0;
}

.info-label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--space-xs);
}

.info-value {
    font-size: 0.92rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.result-action {
    text-align: center;
    margin-top: var(--space-sm);
}

/* ==================== INSIGHTS PAGE ==================== */
/* Architecture Flow */
.architecture-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    flex-wrap: wrap;
    padding: var(--space-2xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-xl);
}

.arch-step {
    background: var(--bg-glass);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg) var(--space-md);
    text-align: center;
    min-width: 130px;
    transition: all var(--transition-base);
}

.arch-step.highlight-step {
    border-color: var(--primary);
    background: rgba(var(--primary-rgb), 0.08);
}

.arch-icon {
    font-size: 1.8rem;
    margin-bottom: var(--space-sm);
}

.arch-label {
    font-weight: 700;
    font-size: 0.85rem;
    margin-bottom: var(--space-xs);
}

.arch-detail {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.arch-arrow {
    font-size: 1.5rem;
    color: var(--primary);
    font-weight: 700;
    flex-shrink: 0;
}

.arch-note {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-sm);
    padding: var(--space-lg) var(--space-xl);
    font-size: 0.92rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.arch-note code {
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
    color: var(--primary);
    border: 1px solid var(--border-color);
    word-break: break-all;
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(220px, 100%), 1fr));
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.metric-card {
    background: var(--bg-glass);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.metric-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.metric-icon {
    font-size: 2rem;
    margin-bottom: var(--space-md);
}

.metric-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -1px;
    margin-bottom: var(--space-xs);
}

.metric-label {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.metric-desc {
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* Comparison */
.comparison-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
}

.comparison-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.comp-row {
    display: grid;
    grid-template-columns: 1fr 1.5fr 0.8fr 0.8fr;
    gap: var(--space-md);
    padding: var(--space-md);
    align-items: center;
    font-size: 0.9rem;
    border-bottom: 1px solid var(--border-color);
}

.comp-header {
    font-weight: 700;
    color: var(--text-secondary);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.comp-highlight {
    background: rgba(var(--primary-rgb), 0.06);
    border-radius: var(--radius-sm);
}

.comp-tag {
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 600;
    background: var(--bg-tertiary);
    color: var(--text-muted);
    display: inline-block;
    text-align: center;
}

.comp-tag.active-tag {
    background: rgba(var(--success-rgb), 0.1);
    color: var(--success);
}

/* Dataset Info */
.dataset-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-2xl);
    flex-wrap: wrap;
    padding: var(--space-xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-xl);
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -1px;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.dataset-info-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
}

.dataset-info-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.dataset-info-card p {
    font-size: 0.92rem;
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

/* Pipeline */
.pipeline-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr));
    gap: var(--space-xl);
}

.pipeline-step {
    background: var(--bg-glass);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

.pipeline-step:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.pipeline-num {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.9rem;
    margin-bottom: var(--space-md);
}

.pipeline-step h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.pipeline-step p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Disease Coverage */
.disease-coverage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
    gap: var(--space-lg);
}

.plant-coverage-card {
    background: var(--bg-glass);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

.plant-coverage-card:hover {
    box-shadow: var(--shadow-md);
}

.plant-coverage-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--border-color);
}

.disease-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.disease-tag {
    padding: var(--space-xs) var(--space-md);
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 600;
    border: 1px solid;
}

.tag-healthy {
    background: rgba(var(--success-rgb), 0.1);
    color: var(--success);
    border-color: rgba(var(--success-rgb), 0.3);
}

.tag-mild {
    background: rgba(var(--warning-rgb), 0.1);
    color: var(--warning);
    border-color: rgba(var(--warning-rgb), 0.3);
}

.tag-severe {
    background: rgba(var(--danger-rgb), 0.1);
    color: var(--danger);
    border-color: rgba(var(--danger-rgb), 0.3);
}

/* ==================== ABOUT PAGE ==================== */
.about-hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    margin-bottom: var(--space-3xl);
}

.about-hero-content h1 {
    margin-bottom: var(--space-md);
}

.about-hero-content p {
    font-size: 1.125rem;
}

.about-hero-visual {
    position: relative;
    height: 300px;
}

.floating-icons {
    position: relative;
    width: 100%;
    height: 100%;
}

.floating-icon {
    position: absolute;
    width: 70px;
    height: 70px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    font-size: 2rem;
    box-shadow: var(--shadow-md);
    animation: icon-float 6s ease-in-out infinite;
}

.floating-icon.icon-1 {
    top: 10%;
    left: 20%;
    animation-delay: 0s;
}

.floating-icon.icon-2 {
    top: 5%;
    right: 25%;
    animation-delay: 1.5s;
}

.floating-icon.icon-3 {
    bottom: 20%;
    left: 10%;
    animation-delay: 3s;
}

.floating-icon.icon-4 {
    bottom: 10%;
    right: 15%;
    animation-delay: 4.5s;
}

@keyframes icon-float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-15px);
    }
}

.mission-content {
    max-width: 800px;
    margin: 0 auto var(--space-2xl);
    text-align: center;
}

.mission-content p {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: var(--space-md);
}

.mission-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-2xl);
    flex-wrap: wrap;
    padding: var(--space-xl);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    margin-top: var(--space-xl);
}

/* Tech Grid */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr));
    gap: var(--space-xl);
}

.tech-card {
    background: var(--bg-glass);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

.tech-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.tech-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.tech-tag {
    padding: var(--space-xs) var(--space-md);
    background: rgba(var(--primary-rgb), 0.1);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.82rem;
    font-weight: 600;
}

/* Objectives */
.objectives-list {
    max-width: 800px;
    margin: 0 auto;
}

.objective-item {
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--border-color);
}

.objective-item:last-child {
    border-bottom: none;
}

.obj-num {
    width: 40px;
    height: 40px;
    min-width: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 0.95rem;
}

.objective-item h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: var(--space-xs);
}

.objective-item p {
    font-size: 0.88rem;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Disclaimer */
.disclaimer-card {
    background: rgba(var(--warning-rgb), 0.1);
    border: 1px solid rgba(var(--warning-rgb), 0.3);
    border-radius: var(--radius-xl);
    padding: var(--space-xl) var(--space-2xl);
    max-width: 1200px;
    margin: 0 auto var(--space-2xl);
    display: flex;
    gap: var(--space-lg);
    align-items: flex-start;
}

.disclaimer-card .disclaimer-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.disclaimer-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.disclaimer-card p {
    font-size: 0.92rem;
    line-height: 1.7;
}

/* ==================== DEVELOPER CARD ==================== */
.developer-card {
    display: flex;
    gap: var(--space-2xl);
    align-items: center;
}

.developer-avatar {
    flex-shrink: 0;
}

.developer-avatar img {
    width: 180px;
    height: 180px;
    object-fit: cover;
    border-radius: var(--radius-full);
    border: 4px solid var(--primary);
    box-shadow: var(--shadow-lg);
}

.developer-info h2 {
    font-size: 1rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-sm);
}

.developer-info h3 {
    font-size: 1.75rem;
    margin-bottom: var(--space-xs);
}

.developer-title {
    color: var(--primary);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.developer-bio {
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

/* Social Links */
.social-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.social-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-base);
}

.social-link.github {
    color: #333;
}

[data-theme="dark"] .social-link.github {
    color: #f0f0f0;
}

.social-link.linkedin {
    color: #0077b5;
}

.social-link.twitter {
    color: #1da1f2;
}

.social-link.email {
    color: var(--primary);
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.social-link.github:hover {
    background: #333;
    color: white;
    border-color: #333;
}

.social-link.linkedin:hover {
    background: #0077b5;
    color: white;
    border-color: #0077b5;
}

.social-link.twitter:hover {
    background: #1da1f2;
    color: white;
    border-color: #1da1f2;
}

.social-link.email:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* ==================== PROJECT LINKS ==================== */
.project-links-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.project-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    text-decoration: none;
    transition: all var(--transition-base);
}

.project-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.project-link>i:first-child {
    font-size: 2rem;
    color: var(--primary);
}

.project-link>i:last-child {
    margin-left: auto;
    color: var(--text-muted);
}

.project-link h4 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.project-link p {
    font-size: 0.85rem;
    margin: 0;
}

/* ==================== FOOTER ==================== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-3xl);
    margin-bottom: var(--space-2xl);
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.footer-logo-img {
    width: 32px;
    height: 32px;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.footer-brand p {
    font-size: 0.95rem;
    margin-bottom: var(--space-lg);
}

.footer-links h4 {
    font-size: 1rem;
    margin-bottom: var(--space-lg);
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* ==================== FLASH MESSAGES ==================== */
.flash-container {
    position: fixed;
    top: calc(80px + var(--space-md));
    right: var(--space-md);
    z-index: 1100;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    max-width: 400px;
}

.flash-message {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    animation: flashSlide 0.3s ease;
}

.flash-error {
    background: rgba(var(--danger-rgb), 0.15);
    color: var(--danger);
    border: 1px solid rgba(var(--danger-rgb), 0.3);
}

.flash-success {
    background: rgba(var(--success-rgb), 0.15);
    color: var(--success);
    border: 1px solid rgba(var(--success-rgb), 0.3);
}

.flash-warning {
    background: rgba(var(--warning-rgb), 0.15);
    color: var(--warning);
    border: 1px solid rgba(var(--warning-rgb), 0.3);
}

.flash-close {
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    color: inherit;
    opacity: 0.7;
    line-height: 1;
}

.flash-close:hover {
    opacity: 1;
}

@keyframes flashSlide {
    from {
        transform: translateX(100%);
        opacity: 0;
    }

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ==================== LOADING OVERLAY ==================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.spinner-container {
    text-align: center;
    color: #ffffff;
}

.spinner {
    width: 52px;
    height: 52px;
    border: 4px solid rgba(255, 255, 255, 0.2);
    border-top-color: #ffffff;
    border-radius: 50%;
    margin: 0 auto var(--space-md);
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.spinner-container p {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: #ffffff;
}

.spinner-sub {
    font-size: 0.85rem;
    opacity: 0.7;
    color: #ffffff;
}

/* ==================== SCROLL ANIMATIONS ==================== */
.animate-in {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 1024px) {
    .about-hero {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .about-hero-visual {
        display: none;
    }

    .developer-card {
        flex-direction: column;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }

    .project-links-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .navbar {
        width: calc(100% - var(--space-md) * 2);
        padding: var(--space-sm) var(--space-md);
    }

    .nav-brand {
        font-size: 1.25rem;
    }

    .nav-logo {
        width: 30px;
        height: 30px;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: calc(100% + var(--space-sm));
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px) saturate(180%);
        -webkit-backdrop-filter: blur(10px) saturate(180%);
        padding: var(--space-lg);
        border-radius: var(--radius-lg);
        border: 1px solid rgba(255, 255, 255, 0.3);
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    }

    [data-theme="dark"] .nav-links {
        background: rgba(18, 30, 18, 0.98);
        border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .hero {
        min-height: auto;
        padding: calc(70px + var(--space-xl)) 0 var(--space-xl);
    }

    .hero-title {
        font-size: clamp(1.75rem, 6vw, 2.5rem);
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .hero-cta .btn {
        width: 100%;
        max-width: 300px;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }

    .hero-stat-divider {
        width: 60px;
        height: 1px;
    }

    .hero-scroll {
        display: none;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .step-connector {
        display: none;
    }

    .steps-container {
        flex-direction: column;
        align-items: center;
    }

    .step {
        max-width: 100%;
        width: 100%;
    }

    .result-grid {
        grid-template-columns: 1fr;
    }

    .result-details-card {
        padding: var(--space-xl);
    }

    .prediction-chip {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        max-width: 100%;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    .architecture-flow {
        flex-direction: column;
        padding: var(--space-lg);
    }

    .arch-arrow {
        transform: rotate(90deg);
    }

    .comp-row {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-sm);
    }

    .comp-header {
        display: none;
    }

    .glass-section {
        padding: var(--space-xl);
    }

    .glass-section-header {
        flex-direction: column;
        gap: var(--space-md);
    }

    .glass-section-header h2 {
        font-size: 1.25rem;
    }

    .upload-card {
        padding: var(--space-xl);
    }

    .drop-zone {
        padding: var(--space-2xl) var(--space-md);
    }

    .drop-zone-icon {
        font-size: 2.5rem;
    }

    .drop-zone-text h4 {
        font-size: 1rem;
    }

    .page-section {
        padding: calc(70px + var(--space-xl)) 0 var(--space-2xl);
    }

    .diagnose-page {
        padding: calc(70px + var(--space-xl)) 0 var(--space-2xl);
    }

    .page-header h1 {
        font-size: clamp(1.5rem, 5vw, 2rem);
    }

    .page-header p {
        font-size: 1rem;
    }

    .section-header {
        margin-bottom: var(--space-2xl);
    }

    /* Result page fixes */
    .result-header h2 {
        font-size: 1.2rem;
        word-break: break-word;
    }

    .result-action .btn {
        width: 100%;
    }

    /* Flash messages */
    .flash-container {
        left: var(--space-md);
        right: var(--space-md);
        max-width: none;
    }

    /* CTA */
    .cta-card {
        padding: var(--space-2xl) var(--space-lg);
    }

    .cta-card h2 {
        font-size: clamp(1.25rem, 4vw, 1.75rem);
    }

    .cta-card p {
        font-size: 1rem;
    }

    /* Disclaimer */
    .disclaimer-card {
        padding: var(--space-lg);
        flex-direction: column;
        gap: var(--space-md);
    }

    /* About page */
    .mission-content p {
        font-size: 0.95rem;
    }

    /* Developer */
    .developer-avatar img {
        width: 150px;
        height: 150px;
    }

    .developer-info h3 {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    :root {
        --space-lg: 1rem;
        --space-xl: 1.25rem;
        --space-2xl: 1.75rem;
        --space-3xl: 2rem;
    }

    .container {
        padding: 0 var(--space-md);
    }

    .navbar {
        width: calc(100% - var(--space-sm) * 2);
        top: var(--space-sm);
        padding: var(--space-sm);
        border-radius: var(--radius-lg);
    }

    .navbar.scrolled {
        top: var(--space-xs);
    }

    .nav-brand {
        font-size: 1.1rem;
        gap: var(--space-xs);
    }

    .nav-logo {
        width: 26px;
        height: 26px;
    }

    .theme-toggle {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }

    .hero {
        padding: calc(60px + var(--space-lg)) 0 var(--space-lg);
    }

    .hero-badge {
        font-size: 0.78rem;
        padding: var(--space-xs) var(--space-sm);
    }

    .hero-title {
        font-size: clamp(1.5rem, 7vw, 2rem);
    }

    .hero-subtitle {
        font-size: 0.9rem;
        line-height: 1.6;
    }

    .hero-stat .stat-value {
        font-size: 1.5rem;
    }

    .hero-stat .stat-label {
        font-size: 0.78rem;
    }

    .btn-lg {
        padding: var(--space-md) var(--space-lg);
        font-size: 0.95rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .feature-card {
        padding: var(--space-lg);
    }

    .feature-icon {
        width: 48px;
        height: 48px;
        font-size: 1.25rem;
    }

    .metrics-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-md);
    }

    .metric-card {
        padding: var(--space-lg);
    }

    .metric-number {
        font-size: 1.5rem;
    }

    .tech-grid {
        grid-template-columns: 1fr;
    }

    .disease-coverage-grid {
        grid-template-columns: 1fr;
    }

    .plants-grid {
        gap: var(--space-sm);
    }

    .plant-badge {
        padding: var(--space-md);
        min-width: 80px;
        font-size: 0.8rem;
    }

    .plant-badge .plant-emoji {
        font-size: 1.25rem;
    }

    .samples-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }

    .dataset-stats {
        flex-direction: column;
        gap: var(--space-md);
    }

    .mission-stats {
        flex-direction: column;
        gap: var(--space-md);
    }

    /* Developer */
    .developer-avatar img {
        width: 120px;
        height: 120px;
    }

    .developer-info h2 {
        font-size: 0.85rem;
    }

    .developer-info h3 {
        font-size: 1.35rem;
    }

    .developer-bio {
        font-size: 0.9rem;
    }

    .social-link {
        padding: var(--space-xs) var(--space-md);
        font-size: 0.82rem;
    }

    /* Project links */
    .project-link {
        padding: var(--space-lg);
    }

    .project-link>i:first-child {
        font-size: 1.5rem;
    }

    .project-link h4 {
        font-size: 0.9rem;
    }

    .project-link p {
        font-size: 0.78rem;
    }

    /* Upload */
    .upload-card {
        padding: var(--space-lg);
    }

    .drop-zone {
        padding: var(--space-xl) var(--space-md);
    }

    .drop-zone-icon {
        font-size: 2rem;
    }

    .drop-zone-text h4 {
        font-size: 0.95rem;
    }

    .submit-btn {
        font-size: 0.95rem;
    }

    /* Result page */
    .result-details-card {
        padding: var(--space-lg);
    }

    .result-header h2 {
        font-size: 1.1rem;
    }

    .disease-info-box {
        padding: var(--space-lg);
    }

    .info-label {
        font-size: 0.78rem;
    }

    .info-value {
        font-size: 0.85rem;
    }

    /* Glass sections */
    .glass-section {
        padding: var(--space-lg);
    }

    .glass-section-icon {
        width: 44px;
        height: 44px;
        font-size: 1.2rem;
    }

    /* Architecture */
    .arch-step {
        min-width: 100%;
        padding: var(--space-md);
    }

    .arch-icon {
        font-size: 1.4rem;
    }

    /* Comparison */
    .comp-row {
        grid-template-columns: 1fr;
        font-size: 0.82rem;
    }

    /* Objectives */
    .objective-item {
        gap: var(--space-md);
    }

    .obj-num {
        width: 32px;
        height: 32px;
        min-width: 32px;
        font-size: 0.82rem;
    }

    .objective-item h4 {
        font-size: 0.92rem;
    }

    .objective-item p {
        font-size: 0.82rem;
    }

    /* Disclaimer */
    .disclaimer-card {
        padding: var(--space-md);
    }

    .disclaimer-card h3 {
        font-size: 0.95rem;
    }

    .disclaimer-card p {
        font-size: 0.85rem;
    }

    /* CTA */
    .cta-card {
        padding: var(--space-xl) var(--space-md);
    }

    .cta-card .btn {
        width: 100%;
    }

    /* Footer */
    .footer {
        padding: var(--space-2xl) 0 var(--space-lg);
    }

    .footer-logo {
        font-size: 1.25rem;
        justify-content: center;
    }

    .footer-brand p {
        font-size: 0.85rem;
    }

    .footer-links h4 {
        font-size: 0.92rem;
    }

    .footer-links a {
        font-size: 0.85rem;
    }

    .footer-bottom p {
        font-size: 0.78rem;
    }

    /* Flash messages full width on mobile */
    .flash-container {
        top: calc(60px + var(--space-sm));
    }

    .flash-message {
        font-size: 0.82rem;
        padding: var(--space-sm) var(--space-md);
    }

    /* Loading overlay */
    .spinner-container p {
        font-size: 0.95rem;
    }

    .spinner-sub {
        font-size: 0.78rem;
    }

    /* Pipeline */
    .pipeline-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 360px) {
    .container {
        padding: 0 var(--space-sm);
    }

    .navbar {
        width: calc(100% - var(--space-xs) * 2);
    }

    .nav-brand span {
        font-size: 1rem;
    }

    .hero-title {
        font-size: 1.4rem;
    }

    .hero-cta .btn {
        max-width: 100%;
    }

    .hero-stat .stat-value {
        font-size: 1.25rem;
    }

    .metrics-grid {
        grid-template-columns: 1fr;
    }

    .developer-avatar img {
        width: 100px;
        height: 100px;
    }

    .developer-info h3 {
        font-size: 1.2rem;
    }

    .social-link {
        padding: var(--space-xs) var(--space-sm);
        font-size: 0.78rem;
    }

    .plant-badge {
        min-width: 70px;
        padding: var(--space-sm);
        font-size: 0.75rem;
    }

    .btn-lg {
        padding: var(--space-sm) var(--space-md);
        font-size: 0.9rem;
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {

    .feature-card:hover,
    .tech-card:hover,
    .plant-badge:hover,
    .sample-card:hover,
    .metric-card:hover,
    .pipeline-step:hover,
    .social-link:hover,
    .project-link:hover,
    .glass-section:hover {
        transform: none;
    }

    .nav-link {
        padding: var(--space-md);
    }

    .btn:hover::before {
        width: 0;
        height: 0;
    }
}