/* Ubuntu Farming Intro / Landing Page */

:root {
    --primary-color: #4a6741;
    --secondary-color: #5c7a52;
    --accent-color: #7a9b71;
    --text-primary: #3d2817;
    --text-secondary: #6b5d4f;
    --text-light: #8a7d6f;
    --bg-primary: #ffffff;
    --bg-secondary: #f5f2ed;
    --bg-sidebar: #3d2817;
    --bg-cream: #e8e3db;
    --border-color: #cdc5b8;
    --shadow: 0 1px 3px 0 rgba(61, 40, 23, 0.1), 0 1px 2px 0 rgba(61, 40, 23, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(61, 40, 23, 0.1), 0 4px 6px -2px rgba(61, 40, 23, 0.05);
    --radius: 0.5rem;
    --radius-lg: 0.75rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
}

/* Header */
.intro-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border-color);
    padding: 0.875rem 1.5rem;
}

.intro-header-inner {
    max-width: 1100px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.intro-logo img,
.intro-logo-image {
    height: 72px;
    width: auto;
    max-width: 240px;
    object-fit: contain;
    background: var(--bg-primary);
    padding: 10px 16px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.intro-hero-logo {
    margin-bottom: 1.75rem;
}

.intro-hero-logo-image {
    height: clamp(120px, 22vw, 168px);
    width: auto;
    max-width: min(360px, 88vw);
    object-fit: contain;
    background: var(--bg-primary);
    padding: 20px 32px;
    border-radius: 14px;
    box-shadow: var(--shadow-lg);
}

.intro-nav-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color);
    text-decoration: none;
    border: 2px solid var(--primary-color);
    border-radius: var(--radius);
    transition: all 0.2s ease;
}

.intro-nav-link:hover {
    background: var(--primary-color);
    color: white;
}

/* Hero */
.intro-hero {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #f5f2ed 0%, #e8e3db 50%, #d4e0cf 100%);
    background-size: 200% 200%;
    animation: intro-gradient-shift 12s ease infinite;
    padding: 4rem 1.5rem 5rem;
    text-align: center;
}

.intro-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 30%, rgba(74, 103, 65, 0.08) 0%, transparent 50%),
                radial-gradient(circle at 80% 70%, rgba(122, 155, 113, 0.1) 0%, transparent 45%);
    pointer-events: none;
}

.intro-hero-inner {
    position: relative;
    max-width: 720px;
    margin: 0 auto;
}

.intro-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.375rem 0.875rem;
    background: rgba(74, 103, 65, 0.12);
    color: var(--primary-color);
    font-size: 0.8125rem;
    font-weight: 600;
    border-radius: 999px;
    margin-bottom: 1.5rem;
}

.intro-badge i {
    animation: intro-seedling-sway 3s ease-in-out infinite;
}

.intro-hero h1 {
    font-size: clamp(2rem, 5vw, 2.75rem);
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: 1rem;
}

.intro-hero h1 span {
    color: var(--primary-color);
}

.intro-hero-lead {
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    color: var(--text-secondary);
    max-width: 540px;
    margin: 0 auto 2rem;
}

.intro-cta-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    align-items: center;
}

.intro-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.intro-btn-primary:hover {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.intro-btn-secondary {
    background: white;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.intro-btn-secondary:hover {
    background: var(--bg-cream);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.intro-btn:focus-visible {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

/* Features */
.intro-features {
    padding: 4rem 1.5rem;
    max-width: 1100px;
    margin: 0 auto;
}

.intro-section-title {
    text-align: center;
    font-size: clamp(1.5rem, 3vw, 1.875rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.intro-section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2.5rem;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
}

.intro-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.intro-feature-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.intro-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.intro-feature-card:hover .intro-feature-icon {
    transform: scale(1.08);
    background: rgba(74, 103, 65, 0.18);
}

.intro-feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(74, 103, 65, 0.1);
    color: var(--primary-color);
    border-radius: var(--radius);
    font-size: 1.25rem;
    margin-bottom: 1rem;
    transition: transform 0.3s ease, background 0.3s ease;
}

.intro-feature-card h3 {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.intro-feature-card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.55;
}

/* Bottom CTA */
.intro-bottom-cta {
    background: var(--bg-sidebar);
    color: white;
    padding: 3.5rem 1.5rem;
    text-align: center;
}

.intro-bottom-cta h2 {
    font-size: clamp(1.375rem, 3vw, 1.75rem);
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.intro-bottom-cta p {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1rem;
    max-width: 480px;
    margin: 0 auto 1.75rem;
}

.intro-bottom-cta .intro-btn-primary {
    background: white;
    color: var(--primary-color);
    border-color: white;
}

.intro-bottom-cta .intro-btn-primary:hover {
    background: var(--bg-cream);
    border-color: var(--bg-cream);
    color: var(--text-primary);
}

.intro-bottom-cta-links {
    margin-top: 1.25rem;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.75);
}

.intro-bottom-cta-links a {
    color: white;
    font-weight: 600;
    text-decoration: underline;
    text-underline-offset: 2px;
}

.intro-bottom-cta-links a:hover {
    color: var(--accent-color);
}

/* Load-in animations (hero + header) */
.intro-load-animate {
    opacity: 0;
    animation: intro-fade-up 0.7s ease forwards;
}

.intro-load-animate-delay-1 { animation-delay: 0.1s; }
.intro-load-animate-delay-2 { animation-delay: 0.22s; }
.intro-load-animate-delay-3 { animation-delay: 0.34s; }
.intro-load-animate-delay-4 { animation-delay: 0.46s; }

/* Scroll-triggered animations */
.intro-animate {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.intro-animate.visible {
    opacity: 1;
    transform: translateY(0);
}

.intro-features-grid .intro-feature-card:nth-child(1) { transition-delay: 0ms; }
.intro-features-grid .intro-feature-card:nth-child(2) { transition-delay: 80ms; }
.intro-features-grid .intro-feature-card:nth-child(3) { transition-delay: 160ms; }
.intro-features-grid .intro-feature-card:nth-child(4) { transition-delay: 240ms; }
.intro-features-grid .intro-feature-card:nth-child(5) { transition-delay: 320ms; }
.intro-features-grid .intro-feature-card:nth-child(6) { transition-delay: 400ms; }

@keyframes intro-fade-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes intro-gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes intro-seedling-sway {
    0%, 100% { transform: rotate(0deg); }
    25% { transform: rotate(-8deg); }
    75% { transform: rotate(8deg); }
}

/* Responsive */
@media (max-width: 480px) {
    .intro-hero {
        padding: 3rem 1rem 4rem;
    }

    .intro-cta-group {
        flex-direction: column;
        width: 100%;
    }

    .intro-cta-group .intro-btn {
        width: 100%;
    }

    .intro-logo img,
    .intro-logo-image {
        height: 60px;
        max-width: 200px;
    }

    .intro-hero-logo-image {
        padding: 16px 24px;
    }

    .intro-features {
        padding: 3rem 1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .intro-hero {
        animation: none;
    }

    .intro-badge i {
        animation: none;
    }

    .intro-load-animate {
        opacity: 1;
        animation: none;
    }

    .intro-animate {
        opacity: 1;
        transform: none;
        transition: none;
    }
}