/* ========================================
   Pet Tech Haven - Modern Design System
   ======================================== */

:root {
    --primary: #0284C7;           /* Tech Blue */
    --primary-dark: #0369A1;      /* Darker Blue */
    --primary-light: #38BDF8;     /* Light Blue */
    --secondary: #F59E0B;         /* Amber for CTAs */
    --secondary-dark: #D97706;    /* Dark Amber */
    --accent: #10B981;            /* Success Green */
    --neutral-dark: #0F172A;      /* Slate 900 */
    --neutral-medium: #475569;    /* Slate 600 */
    --neutral-light: #F8FAFC;     /* Slate 50 */
    --neutral-border: #E2E8F0;    /* Slate 200 */
    --white: #FFFFFF;
    --danger: #EF4444;            /* Red for cons/warnings */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.2s ease-in-out;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--neutral-dark);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Plus Jakarta Sans', 'Inter', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    color: var(--neutral-dark);
    letter-spacing: -0.02em;
}

a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* Header */
.site-header {
    position: sticky; top: 0; z-index: 1000;
    background: rgba(255,255,255,0.95); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--neutral-border);
}
.site-header .container {
    display: flex; align-items: center; justify-content: space-between; height: 72px;
}
.logo a {
    display: flex; align-items: center; gap: 10px;
    font-family: 'Plus Jakarta Sans', sans-serif; font-size: 22px; font-weight: 800;
    color: var(--primary);
}
.logo-icon { font-size: 24px; }
.main-nav { display: flex; align-items: center; }
.nav-menu { display: flex; list-style: none; gap: 28px; }
.nav-menu a {
    font-size: 15px; font-weight: 600; color: var(--neutral-medium);
}
.nav-menu a:hover, .nav-menu a.active { color: var(--primary); }
.nav-cta {
    padding: 10px 20px; background: var(--primary); color: var(--white);
    border-radius: var(--radius-sm); font-weight: 600; font-size: 14px;
}
.nav-cta:hover { background: var(--primary-dark); }
.mobile-menu-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; }

/* Hero */
.hero {
    background: linear-gradient(135deg, var(--neutral-light) 0%, var(--white) 100%);
    padding: 80px 0; text-align: center;
}
.hero-title { font-size: 48px; margin-bottom: 20px; color: var(--neutral-dark); }
.hero-subtitle { font-size: 20px; color: var(--neutral-medium); max-width: 700px; margin: 0 auto 32px; }
.hero-cta-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* Buttons */
.btn {
    display: inline-block; padding: 12px 24px; border-radius: var(--radius-sm);
    font-weight: 600; font-size: 15px; text-align: center; cursor: pointer; border: none;
}
.btn-primary { background: var(--secondary); color: var(--white); }
.btn-primary:hover { background: var(--secondary-dark); transform: translateY(-1px); }
.btn-secondary { background: transparent; color: var(--primary); border: 2px solid var(--primary); }
.btn-secondary:hover { background: var(--primary); color: var(--white); }

/* Sections */
section { padding: 80px 0; }
.section-title { font-size: 36px; text-align: center; margin-bottom: 48px; }

/* Cards */
.category-grid, .product-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; }
.category-card, .product-card {
    background: var(--white); border: 1px solid var(--neutral-border);
    border-radius: var(--radius-md); padding: 24px; transition: var(--transition);
}
.category-card:hover, .product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--primary-light); }
.category-icon { font-size: 32px; margin-bottom: 16px; }
.category-card h3, .product-card h3 { font-size: 20px; margin-bottom: 12px; }
.product-badge {
    display: inline-block; background: var(--primary-light); color: var(--white);
    padding: 4px 10px; border-radius: 20px; font-size: 12px; font-weight: 700; margin-bottom: 12px;
}
.product-meta { display: flex; justify-content: space-between; margin: 12px 0; font-size: 14px; }
.price { font-weight: 700; color: var(--primary); font-size: 18px; }
.rating { color: var(--secondary); }
.read-more { color: var(--primary); font-weight: 600; font-size: 14px; }

/* Product Review Specifics */
.review-header { text-align: center; margin-bottom: 48px; }
.review-header h1 { font-size: 42px; margin-bottom: 16px; }
.quick-verdict { background: var(--neutral-light); padding: 32px; border-radius: var(--radius-md); margin-bottom: 48px; }
.pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 24px; }
.pros, .cons { padding: 20px; border-radius: var(--radius-sm); }
.pros { background: rgba(16, 185, 129, 0.1); border-left: 4px solid var(--accent); }
.cons { background: rgba(239, 68, 68, 0.1); border-left: 4px solid var(--danger); }
.pros h3 { color: var(--accent); font-size: 18px; margin-bottom: 12px; }
.cons h3 { color: var(--danger); font-size: 18px; margin-bottom: 12px; }
.pros ul, .cons ul { list-style: none; }
.pros li, .cons li { padding: 6px 0 6px 24px; position: relative; font-size: 15px; }
.pros li::before { content: '✓'; position: absolute; left: 0; color: var(--accent); font-weight: bold; }
.cons li::before { content: '✗'; position: absolute; left: 0; color: var(--danger); font-weight: bold; }

.specs-table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.specs-table tr { border-bottom: 1px solid var(--neutral-border); }
.specs-table th { text-align: left; padding: 12px 16px; font-weight: 600; width: 35%; color: var(--neutral-dark); }
.specs-table td { padding: 12px 16px; color: var(--neutral-medium); }

.affiliate-box {
    background: var(--neutral-light); border-left: 4px solid var(--primary);
    padding: 16px; margin: 32px 0; border-radius: var(--radius-sm); font-size: 14px; color: var(--neutral-medium);
}

/* Footer */
.site-footer { background: var(--neutral-dark); color: var(--white); padding: 60px 0 24px; }
.footer-content { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-section h3 { color: var(--white); font-size: 16px; margin-bottom: 16px; font-family: 'Inter', sans-serif; }
.footer-section p, .footer-section a { color: #94A3B8; font-size: 14px; margin-bottom: 8px; display: block; }
.footer-section a:hover { color: var(--white); }
.footer-bottom { border-top: 1px solid #334155; padding-top: 24px; text-align: center; font-size: 13px; color: #64748B; }

/* Responsive */
@media (max-width: 768px) {
    .mobile-menu-toggle { display: block; }
    .main-nav { position: fixed; top: 72px; left: 0; right: 0; background: var(--white); padding: 24px; box-shadow: var(--shadow-lg); transform: translateY(-150%); transition: var(--transition); }
    .main-nav.active { transform: translateY(0); }
    .nav-menu { flex-direction: column; gap: 16px; }
    .nav-cta { display: none; }
    .hero-title { font-size: 32px; }
    .pros-cons { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: 1fr; gap: 32px; }
}