/* Modern Clean Tech CSS for aidatacheckup.com */
:root {
    --bg-dark: #0f172a;
    --bg-card: #1e293b;
    --bg-light: #ffffff;
    --bg-alt: #f8fafc;
    --text-main: #334155;
    --text-muted: #64748b;
    --text-white: #f8fafc;
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --accent: #06b6d4;
    --accent-glow: rgba(6, 182, 212, 0.15);
    --border-color: #e2e8f0;
    --border-dark: #334155;
    --success: #10b981;
    --radius: 12px;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --transition: all 0.25s ease-in-out;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text-main);
    background-color: var(--bg-light);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.medium-container {
    max-width: 800px;
}

/* Staging Lock Overlay */
.lock-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: #090d16;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.lock-card {
    background: #1e293b;
    border: 1px solid #334155;
    padding: 40px;
    border-radius: 16px;
    text-align: center;
    max-width: 420px;
    width: 90%;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    color: var(--text-white);
}

.lock-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.input-group {
    display: flex;
    gap: 10px;
    margin: 20px 0 10px 0;
}

.input-group input {
    flex: 1;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid var(--border-dark);
    background: #0f172a;
    color: #fff;
    outline: none;
}

.error-msg {
    color: #ef4444;
    font-size: 14px;
    margin-top: 8px;
}

.lock-hint {
    display: block;
    color: var(--text-muted);
    font-size: 12px;
    margin-top: 15px;
}

.app-hidden {
    display: none;
}

/* Typography & Badges */
h1, h2, h3, h4 {
    color: #0f172a;
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: 2.8rem; }
h2 { font-size: 2.2rem; }
h3 { font-size: 1.3rem; }

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

.text-center { text-align: center; }
.text-white { color: var(--text-white) !important; }

.section {
    padding: 80px 0;
}

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

.section-header {
    margin-bottom: 50px;
}

.section-tag {
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 13px;
    letter-spacing: 1px;
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: 18px 0;
}

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

.brand {
    font-size: 22px;
    font-weight: 800;
    color: #0f172a;
    text-decoration: none;
}

.brand-ai { color: var(--primary); }
.brand-accent { color: var(--accent); }

.nav-links a {
    margin: 0 15px;
    text-decoration: none;
    color: var(--text-main);
    font-weight: 500;
    transition: var(--transition);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Hero */
.hero {
    padding: 100px 0 80px 0;
    text-align: center;
    background: radial-gradient(circle at top, rgba(37, 99, 235, 0.05) 0%, rgba(255,255,255,1) 70%);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 25px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
}

.hero-subtitle {
    max-width: 750px;
    margin: 20px auto 35px auto;
    font-size: 1.15rem;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: #0f172a;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
}

/* Grids & Cards */
.grid {
    display: grid;
    gap: 25px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(1, 1fr); }
}

@media (max-width: 640px) {
    .grid-4, .grid-2 { grid-template-columns: 1fr; }
    .hero-cta { flex-direction: column; }
    .hero-stats { flex-direction: column; gap: 20px; }
}

.card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 30px;
    transition: var(--transition);
    position: relative;
    box-shadow: var(--shadow);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.08);
}

.feature-card .card-icon {
    font-size: 36px;
    margin-bottom: 15px;
}

/* Product Cards Specifics */
.product-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.featured-product {
    border: 2px solid var(--primary);
    background: #f0f7ff;
}

.highlight-border {
    border: 2px solid var(--accent);
}

.badge {
    position: absolute;
    top: -12px;
    right: 20px;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 12px;
    text-transform: uppercase;
}

.badge-free { background: var(--accent); color: #fff; }
.badge-auto { background: #e2e8f0; color: #334155; }
.badge-featured { background: var(--primary); color: #fff; }
.badge-hybrid { background: #8b5cf6; color: #fff; }
.badge-human { background: #f59e0b; color: #fff; }
.badge-sub { background: #10b981; color: #fff; }

.product-desc {
    font-size: 13px;
    margin: 10px 0 15px 0;
    min-height: 50px;
}

.price-tag {
    margin: 15px 0;
}

.price {
    font-size: 1.8rem;
    font-weight: 800;
    color: #0f172a;
}

.price-sub {
    font-size: 12px;
    color: var(--text-muted);
}

.feature-list {
    list-style: none;
    margin-bottom: 20px;
    font-size: 13px;
}

.feature-list li {
    padding: 5px 0;
    color: var(--text-main);
    border-bottom: 1px dashed #f1f5f9;
}

/* Buttons */
.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    padding: 12px 24px;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); }

.btn-secondary { background: #0f172a; color: #fff; }
.btn-secondary:hover { background: #1e293b; }

.btn-outline { border-color: var(--border-color); color: var(--text-main); background: #fff; }
.btn-outline:hover { background: var(--bg-alt); }

.btn-block { width: 100%; text-align: center; }
.btn-lg { padding: 16px 32px; font-size: 16px; }
.btn-sm { padding: 6px 14px; font-size: 12px; }
.btn-icon { padding: 6px 10px; }

.disabled-btn { opacity: 0.6; cursor: not-allowed; }

/* Freebie Section */
.freebie-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

@media (max-width: 900px) {
    .freebie-wrapper { grid-template-columns: 1fr; }
}

.freebie-info h2 { color: #fff; margin: 15px 0; }
.freebie-info p { color: #94a3b8; margin-bottom: 20px; }

.check-list { list-style: none; color: #cbd5e1; font-size: 14px; }
.check-list li { margin-bottom: 10px; }

.freebie-form-card {
    background: #1e293b;
    padding: 30px;
    border-radius: var(--radius);
    border: 1px solid #334155;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
    color: #cbd5e1;
}

.contact-card label { color: var(--text-main); }

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 12px;
    border-radius: 8px;
    border: 1px solid #334155;
    background: #0f172a;
    color: #fff;
    font-family: inherit;
    outline: none;
}

.contact-card input, .contact-card select, .contact-card textarea {
    background: #fff;
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.form-group textarea { font-family: 'JetBrains Mono', monospace; font-size: 12px; }

.freebie-result {
    background: #0f172a;
    border: 1px solid var(--accent);
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
    text-align: center;
}

.score-display {
    font-size: 3rem;
    font-weight: 800;
    color: var(--accent);
    margin: 10px 0;
}

.score-total { font-size: 1.2rem; color: #64748b; }

/* Contact */
.contact-card { padding: 40px; }

/* Footer */
.footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 60px 0 30px 0;
    border-top: 1px solid #1e293b;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-brand .brand { color: #fff; }
.footer-links h4 { color: #fff; margin-bottom: 15px; font-size: 14px; }
.footer-links ul { list-style: none; }
.footer-links a { color: #94a3b8; text-decoration: none; font-size: 13px; }
.footer-links a:hover { color: #fff; }

.footer-bottom {
    padding-top: 20px;
    border-top: 1px solid #1e293b;
    font-size: 12px;
}