/* codes-qr.com — common styles */
:root {
    --bg: #0a0e1a;
    --bg2: #131826;
    --bg3: #1d2333;
    --border: #2a3148;
    --text: #f1f5f9;
    --text2: #a3b1c8;
    --text3: #6b7693;
    --accent: #6366f1;
    --accent2: #8b5cf6;
    --green: #22c55e;
    --orange: #f59e0b;
    --red: #ef4444;
    --gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --radius: 14px;
    --radius-sm: 8px;
    --shadow: 0 8px 32px rgba(99, 102, 241, 0.18);
}

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

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

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

/* Header */
.header {
    position: sticky; top: 0; z-index: 50;
    background: rgba(10, 14, 26, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.logo {
    font-weight: 800; font-size: 1.25rem;
    background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.nav { display: flex; gap: 24px; align-items: center; }
.nav a { color: var(--text2); font-size: 0.9rem; font-weight: 500; text-decoration: none; }
.nav a:hover { color: var(--text); }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 11px 22px; border-radius: var(--radius-sm); font-weight: 600;
    font-size: 0.92rem; cursor: pointer; transition: all 0.2s; border: none;
    text-decoration: none;
}
.btn-primary { background: var(--gradient); color: #fff; }
.btn-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow); text-decoration: none; }
.btn-secondary { background: var(--bg3); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--accent); text-decoration: none; }
.btn-ghost { background: transparent; color: var(--text2); }
.btn-ghost:hover { color: var(--text); }
.btn-lg { padding: 14px 28px; font-size: 1rem; }

/* Hero */
.hero { padding: 64px 0 48px; }
.hero-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: start; }
@media (max-width: 920px) { .hero-grid { grid-template-columns: 1fr; gap: 32px; } }

.hero-badge {
    display: inline-block; padding: 5px 12px; border-radius: 999px;
    background: rgba(99, 102, 241, 0.12); color: var(--accent);
    font-size: 0.78rem; font-weight: 600; margin-bottom: 18px;
}
.hero h1 {
    font-size: 2.85rem; line-height: 1.1; font-weight: 800;
    letter-spacing: -0.02em; margin-bottom: 18px;
}
.hero h1 .highlight {
    background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p.lead { font-size: 1.1rem; color: var(--text2); margin-bottom: 28px; max-width: 520px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

/* Generator card */
.gen-card {
    background: var(--bg2); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow);
}
.gen-tabs { display: flex; gap: 4px; margin-bottom: 20px; flex-wrap: wrap; }
.gen-tab {
    padding: 7px 14px; font-size: 0.82rem; font-weight: 600; cursor: pointer;
    border-radius: 7px; color: var(--text3); background: transparent;
    border: 1px solid transparent; transition: all 0.15s;
}
.gen-tab:hover { color: var(--text); }
.gen-tab.active { background: var(--bg3); color: var(--text); border-color: var(--border); }

.gen-body { display: grid; grid-template-columns: 1fr 200px; gap: 24px; align-items: start; }
@media (max-width: 600px) { .gen-body { grid-template-columns: 1fr; } }

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 0.78rem; font-weight: 600; color: var(--text2); margin-bottom: 6px; }
.input, .textarea {
    width: 100%; padding: 11px 14px; border-radius: var(--radius-sm);
    background: var(--bg3); border: 1px solid var(--border); color: var(--text);
    font-size: 0.95rem; font-family: inherit;
}
.input:focus, .textarea:focus { outline: none; border-color: var(--accent); }
.textarea { resize: vertical; min-height: 80px; }

.qr-preview {
    background: #fff; padding: 14px; border-radius: var(--radius-sm);
    text-align: center; aspect-ratio: 1; display: flex; align-items: center; justify-content: center;
}
.qr-preview canvas, .qr-preview img { max-width: 100%; height: auto; display: block; }
.gen-actions { margin-top: 14px; display: flex; gap: 8px; flex-wrap: wrap; }

/* Sections */
.section { padding: 72px 0; border-top: 1px solid var(--border); }
.section h2 {
    font-size: 2rem; font-weight: 700; margin-bottom: 12px;
    letter-spacing: -0.01em; text-align: center;
}
.section h2 .highlight {
    background: var(--gradient); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.section .section-lead { color: var(--text2); text-align: center; max-width: 600px; margin: 0 auto 40px; }

/* Use cases grid */
.usecases-grid {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 14px;
}
.usecase {
    background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 22px 18px; transition: all 0.2s; cursor: pointer; text-decoration: none;
    color: var(--text); display: block;
}
.usecase:hover {
    border-color: var(--accent); transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.15); text-decoration: none;
}
.usecase-icon { font-size: 1.8rem; margin-bottom: 10px; display: block; }
.usecase-name { font-weight: 600; font-size: 0.95rem; margin-bottom: 4px; }
.usecase-desc { color: var(--text3); font-size: 0.78rem; }

/* Pricing */
.pricing-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px; max-width: 920px; margin: 0 auto;
}
.plan {
    background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 28px 24px; position: relative;
}
.plan.featured {
    border-color: var(--accent); background: linear-gradient(180deg, rgba(99, 102, 241, 0.06), var(--bg2));
}
.plan-tag {
    position: absolute; top: -10px; right: 24px; background: var(--gradient);
    padding: 3px 11px; border-radius: 999px; font-size: 0.7rem; font-weight: 700; color: #fff;
}
.plan-name { font-size: 1.15rem; font-weight: 700; margin-bottom: 8px; }
.plan-price { font-size: 2.4rem; font-weight: 800; margin-bottom: 4px; }
.plan-price .currency { font-size: 1.4rem; font-weight: 600; vertical-align: super; }
.plan-price .period { font-size: 0.85rem; color: var(--text3); font-weight: 500; }
.plan-desc { color: var(--text3); font-size: 0.82rem; margin-bottom: 20px; }
.plan-features { list-style: none; margin-bottom: 24px; }
.plan-features li {
    padding: 7px 0; font-size: 0.9rem; color: var(--text2);
    display: flex; align-items: flex-start; gap: 8px;
}
.plan-features li::before { content: "✓"; color: var(--green); font-weight: 700; flex-shrink: 0; }
.plan .btn { width: 100%; justify-content: center; }

/* Comparison */
.comparison-card {
    background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 32px; max-width: 820px; margin: 0 auto;
}
.comparison-card h3 { font-size: 1.2rem; margin-bottom: 14px; }
.comparison-card p { color: var(--text2); margin-bottom: 12px; }
.comparison-list { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; margin-top: 24px; }
@media (max-width: 600px) { .comparison-list { grid-template-columns: 1fr; } }
.comparison-list h4 { font-size: 0.95rem; margin-bottom: 10px; color: var(--text2); }
.comparison-list ul { list-style: none; }
.comparison-list li { padding: 5px 0; color: var(--text); font-size: 0.9rem; }

/* FAQ */
.faq-item {
    background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius-sm);
    margin-bottom: 10px; overflow: hidden;
}
.faq-q {
    padding: 16px 22px; cursor: pointer; font-weight: 600;
    display: flex; justify-content: space-between; align-items: center;
    color: var(--text);
}
.faq-a {
    padding: 0 22px 18px; color: var(--text2); font-size: 0.9rem;
    display: none;
}
.faq-item.open .faq-a { display: block; }
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-q::after { content: "+"; font-size: 1.4rem; color: var(--text3); transition: transform 0.2s; }

/* Footer */
.footer {
    border-top: 1px solid var(--border); padding: 40px 0 24px; margin-top: 80px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; margin-bottom: 28px; }
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
.footer-col h4 { font-size: 0.85rem; font-weight: 600; margin-bottom: 12px; color: var(--text); }
.footer-col a { display: block; color: var(--text3); font-size: 0.85rem; margin-bottom: 6px; text-decoration: none; }
.footer-col a:hover { color: var(--text); }
.footer-bottom {
    padding-top: 22px; border-top: 1px solid var(--border);
    color: var(--text3); font-size: 0.82rem; text-align: center;
}

/* Auth pages */
.auth-wrap { min-height: 80vh; display: flex; align-items: center; justify-content: center; padding: 40px 24px; }
.auth-card {
    background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 36px; max-width: 420px; width: 100%; box-shadow: var(--shadow);
}
.auth-card h2 { text-align: center; margin-bottom: 8px; }
.auth-card p { text-align: center; color: var(--text2); margin-bottom: 24px; font-size: 0.92rem; }
.auth-msg { padding: 12px 14px; border-radius: var(--radius-sm); margin-top: 14px; font-size: 0.88rem; }
.auth-msg.success { background: rgba(34, 197, 94, 0.12); color: var(--green); }
.auth-msg.error { background: rgba(239, 68, 68, 0.12); color: var(--red); }

/* Dashboard */
.dash-header { padding: 24px 0; border-bottom: 1px solid var(--border); }
.dash-grid { display: grid; grid-template-columns: 280px 1fr; gap: 24px; padding: 28px 0; }
@media (max-width: 800px) { .dash-grid { grid-template-columns: 1fr; } }
.qr-list-card {
    background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 16px;
}
.qr-row {
    padding: 12px 14px; border-radius: var(--radius-sm); cursor: pointer;
    border: 1px solid transparent; transition: all 0.15s;
}
.qr-row:hover { background: var(--bg3); border-color: var(--border); }
.qr-row.active { background: var(--bg3); border-color: var(--accent); }
.qr-row-name { font-weight: 600; font-size: 0.92rem; }
.qr-row-meta { color: var(--text3); font-size: 0.75rem; margin-top: 3px; }

/* Hide/show */
.hidden { display: none !important; }