/* Pet Source - Custom Styles */
:root {
    --primary: #1a365d;
    --primary-light: #2b4a7a;
    --accent: #2e7d32;
    --accent-light: #4caf50;
    --dark-bg: #0f172a;
    --section-bg: #f8fafc;
    --text-dark: #1e293b;
    --text-gray: #64748b;
    --text-light: #f1f5f9;
    --border: #e2e8f0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
}

/* Navigation */
.nav-link {
    position: relative;
    color: var(--text-gray);
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s;
}

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

.nav-link:hover::after {
    width: 100%;
}

.nav-link.active {
    color: var(--primary);
}

.nav-link.active::after {
    width: 100%;
}

/* Hero Section */
.hero-overlay {
    background: linear-gradient(135deg, rgba(15,23,42,0.92) 0%, rgba(26,54,93,0.85) 50%, rgba(15,23,42,0.92) 100%);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    color: white;
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s;
    display: inline-block;
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 24px -8px rgba(46,125,50,0.4);
}

.btn-outline {
    background: transparent;
    color: white;
    padding: 14px 32px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    border: 2px solid rgba(255,255,255,0.3);
    transition: all 0.3s;
    display: inline-block;
    cursor: pointer;
    text-decoration: none;
}

.btn-outline:hover {
    border-color: white;
    background: rgba(255,255,255,0.1);
}

/* Product Cards */
.product-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all 0.3s;
}

.product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -12px rgba(0,0,0,0.15);
}

/* Stat Cards */
.stat-card {
    background: white;
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    border: 1px solid var(--border);
    transition: all 0.3s;
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px -8px rgba(0,0,0,0.1);
}

/* Form Styles */
.form-input {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: border-color 0.3s, box-shadow 0.3s;
    background: white;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(46,125,50,0.1);
}

.form-input::placeholder {
    color: #94a3b8;
}

/* Section Headers */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.7;
}

.underline-accent {
    display: inline-block;
    position: relative;
}

.underline-accent::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--accent);
    border-radius: 2px;
}

/* Value Props */
.value-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

/* Mobile Menu */
.mobile-menu {
    display: none;
}

.mobile-menu.open {
    display: block;
}

@media (max-width: 767px) {
    .section-header h2 {
        font-size: 1.75rem;
    }
    
    .hero-title {
        font-size: 2rem !important;
    }
    
    .hero-subtitle {
        font-size: 1rem !important;
    }
}

/* FAQ Accordion */
.faq-question {
    cursor: pointer;
    transition: all 0.3s;
}

.faq-question:hover {
    color: var(--accent);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer.open {
    max-height: 500px;
}

.faq-icon {
    transition: transform 0.3s;
}

.faq-icon.rotate {
    transform: rotate(45deg);
}

/* Footer */
.footer-link {
    color: #94a3b8;
    transition: color 0.2s;
    text-decoration: none;
}

.footer-link:hover {
    color: white;
}

/* Cert Badge */
.cert-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 8px;
    color: var(--text-light);
    font-size: 0.875rem;
    font-weight: 500;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeInUp 0.6s ease forwards;
}

.animate-fade-in-delay-1 {
    animation: fadeInUp 0.6s ease 0.2s forwards;
    opacity: 0;
}

.animate-fade-in-delay-2 {
    animation: fadeInUp 0.6s ease 0.4s forwards;
    opacity: 0;
}