/* ============================
   AP BIOTECH PARK - Main Stylesheet
   Green Agricultural Theme
   Mobile-First Responsive Design
   ============================ */

/* ===== ROOT & VARIABLES ===== */
:root {
    --primary: #2D6A4F;
    --primary-dark: #1B4332;
    --primary-light: #40916C;
    --secondary: #40916C;
    --accent: #D4A574;
    --light: #D8F3DC;
    --dark: #1B4332;
    --text: #264653;
    --text-light: #5a6c7d;
    --success: #52B788;
    --warning: #d4a574;
    --error: #d62828;
    --border: #e0e0e0;
    --bg-light: #f8f9fa;
    --white: #ffffff;

    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-mono: 'Courier New', monospace;

    --transition: all 0.3s ease;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.15);
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--text);
    background-color: var(--white);
    line-height: 1.6;
    font-size: 16px;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-light);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--dark);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.1rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-bottom: 1rem;
    text-align: justify;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ===== LAYOUT ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.section {
    padding: 3rem 0;
}

.section.alt {
    background-color: var(--bg-light);
}

/* ===== HEADER & NAVIGATION ===== */
header {
    background: var(--white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: var(--text);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s ease;
}

nav a:hover::after {
    width: 100%;
}

/* Mobile Menu */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary);
}

/* ===== HERO BANNER ===== */
.hero {
    min-height: 600px;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.1), rgba(0, 0, 0, 0.21)), url('../images/hero/hero.jpeg') center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.3), rgba(0, 0, 0, 0.1));
    z-index: -1;
}

.hero-content {
    z-index: 2;
    animation: slideUp 0.8s ease;
}

.hero h1 {
    color: var(--white);
    margin-bottom: 1rem;
    font-size: 3rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: var(--light);
    text-align: center;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary);
    color: var(--white);
    border: 2px solid var(--primary);
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    font-size: 1rem;
    text-align: center;
}

.btn:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn.secondary {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--dark);
}

.btn.secondary:hover {
    background: #c99464;
    border-color: #c99464;
}

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

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

.btn.large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn.block {
    display: block;
    width: 100%;
}

/* ===== CARDS ===== */
.card {
    background: var(--white);
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.card-image {
    width: 100%;
    height: 250px;
    object-fit: cover;
    overflow: hidden;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--dark);
}

.card-text {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 1rem;
}

.card-footer {
    padding: 1rem 1.5rem;
    background: var(--bg-light);
    border-top: 1px solid var(--border);
}

/* ===== GRID ===== */
.grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    margin: 2rem 0;
}

.grid.two-column {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

.grid.three-column {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* ===== STATS SECTION ===== */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
    margin: 3rem 0;
}

.stat-item {
    padding: 2rem;
    background: var(--light);
    border-radius: 0.75rem;
    border-left: 4px solid var(--success);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-light);
    font-weight: 600;
}

/* ===== TESTIMONIALS ===== */
.testimonial {
    background: var(--white);
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: var(--shadow-md);
    position: relative;
    border-top: 4px solid var(--primary);
}

.testimonial::before {
    content: '"';
    font-size: 3rem;
    color: var(--primary);
    opacity: 0.3;
    position: absolute;
    top: 10px;
    left: 20px;
}

.testimonial-text {
    font-size: 0.95rem;
    margin-bottom: 1rem;
    color: var(--text-light);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.testimonial-avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--light);
}

.testimonial-name {
    font-weight: 600;
    color: var(--dark);
}

.testimonial-role {
    font-size: 0.85rem;
    color: var(--text-light);
}

/* ===== FORMS ===== */
input, textarea, select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: var(--transition);
    margin-bottom: 1rem;
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.1);
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark);
}

.form-group {
    margin-bottom: 1.5rem;
}

textarea {
    resize: vertical;
    min-height: 120px;
}

/* ===== FOOTER ===== */
footer {
    background: var(--dark);
    color: var(--white);
    padding: 3rem 0 1rem;
    margin-top: auto;
}

footer .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

footer h4 {
    color: var(--light);
}

footer a {
    color: var(--light);
}

footer a:hover {
    color: var(--success);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-light);
}

/* ===== ANIMATIONS ===== */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.mt-1 {
    margin-top: 0.5rem;
}

.mt-2 {
    margin-top: 1rem;
}

.mt-3 {
    margin-top: 2rem;
}

.mb-1 {
    margin-bottom: 0.5rem;
}

.mb-2 {
    margin-bottom: 1rem;
}

.mb-3 {
    margin-bottom: 2rem;
}

.py-1 {
    padding: 0.5rem 0;
}

.py-2 {
    padding: 1rem 0;
}

.py-3 {
    padding: 2rem 0;
}

.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

.fade-in {
    animation: fadeIn 0.5s ease;
}

.badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: var(--primary);
    color: var(--white);
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
}

.badge.secondary {
    background: var(--accent);
    color: var(--dark);
}

.product-banner {
    background: var(--light);
    padding: 3rem;
    text-align: center;
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-size: cover;
    background-position: center;
}

.vegetable-banner {
    background-image: url("/assets/images/products/vegitables/banner.jpg");
}

.sugercane-banner {
    background-image: url("/assets/images/products/sugercane/banner.webp");
}

.banana-banner {
    background-image: url("/assets/images/products/banana/banner.jpg");
}

.bio-products-banner {
    background-image: url("/assets/images/products/bio-products/banner.webp");
    background-size: cover;
    background-position: center;
}

/* ===== MOBILE NAVIGATION ===== */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    nav {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow-md);
    }

    nav.active {
        display: flex;
    }

    nav ul {
        flex-direction: column;
        gap: 0.5rem;
    }

    nav a {
        padding: 0.5rem 0;
        display: block;
    }

    nav a::after {
        display: none;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

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

    .section {
        padding: 2rem 0;
    }
}

@media (max-width: 480px) {
    .grid {
        grid-template-columns: 1fr;
    }

    .grid.two-column {
        grid-template-columns: 1fr;
    }

    .grid.three-column {
        grid-template-columns: 1fr;
    }

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

    h1 {
        font-size: 1.5rem;
    }

    h2 {
        font-size: 1.25rem;
    }

    .hero {
        min-height: 400px;
    }

    .hero h1 {
        font-size: 1.5rem;
    }

    .btn {
        padding: 0.6rem 1.2rem;
    }
}

/* ===== LAZY LOADING ===== */
img[loading="lazy"] {
    background: var(--light);
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar {
    width: 10px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 5px;
}

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