/* =============================================
   CryptoGains Calculator - Main Styles
   ============================================= */

:root {
    --bg: #0a0e1a;
    --surface: #111827;
    --surface2: #1a2236;
    --border: #1e2d45;
    --accent: #00d4ff;
    --accent2: #7c3aed;
    --gain: #22c55e;
    --loss: #ef4444;
    --warn: #f59e0b;
    --text: #e2e8f0;
    --muted: #a0aec0;
    --font-mono: 'Space Mono', monospace;
    --font-display: 'Inter', sans-serif;
    --font-heading: 'Syne', sans-serif;
}

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

a { color: var(--accent); }
a:visited { color: var(--accent); }
a:hover { color: #66e0ff; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-display);
    min-height: 100vh;
    font-size: 14px;
    line-height: 1.6;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(0,212,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,212,255,0.02) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
}

/* ---- NAV ---- */
.site-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 14, 26, 0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 0 24px;
}
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
    font-weight: 800;
    font-size: 18px;
}
.nav-logo-icon {
    width: 36px; height: 36px;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    border-radius: 8px;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px;
}
.nav-logo span { color: var(--accent); }
.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
}
.nav-links a {
    color: var(--muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a.active { color: var(--accent); }
.lang-switch {
    display: inline-flex;
    gap: 4px;
    margin-left: 16px;
    background: var(--surface);
    border-radius: 6px;
    padding: 2px;
    border: 1px solid var(--border);
}
.lang-switch a {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px !important;
    font-weight: 600;
}
.lang-switch a.active {
    background: var(--accent);
    color: var(--bg) !important;
}

/* ---- LANDING ---- */
.container { max-width: 1200px; margin: 0 auto; position: relative; z-index: 1; padding: 0 24px; }

.hero {
    text-align: center;
    padding: 80px 0 60px;
}
.hero h1 {
    font-size: 42px;
    font-weight: 800;
    letter-spacing: -1px;
    line-height: 1.2;
    margin-bottom: 16px;
}
.hero h1 span { color: var(--accent); }
.hero p {
    font-size: 16px;
    color: var(--muted);
    max-width: 600px;
    margin: 0 auto 32px;
    line-height: 1.7;
}
.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 700;
    font-family: var(--font-display);
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.3s;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    color: #fff;
    box-shadow: 0 4px 20px rgba(0,212,255,0.25);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0,212,255,0.35);
}
.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
}
.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
}
.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
    border-radius: 6px;
}

/* Features grid */
.features {
    padding: 60px 0;
}
.features h2 {
    text-align: center;
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 40px;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}
.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    transition: all 0.3s;
}
.feature-card:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
}
.feature-icon { font-size: 28px; margin-bottom: 12px; }
.feature-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
.feature-card p { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* Pricing */
.pricing {
    padding: 60px 0;
    text-align: center;
}
.pricing h2 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 40px;
}
.price-card {
    max-width: 400px;
    margin: 0 auto;
    background: var(--surface);
    border: 2px solid var(--accent);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 0 40px rgba(0,212,255,0.1);
}
.price-amount {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 8px;
}
.price-amount span { color: var(--accent); }
.price-period {
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 14px;
    margin-bottom: 24px;
}
.price-features {
    list-style: none;
    text-align: left;
    margin-bottom: 32px;
}
.price-features li {
    padding: 8px 0;
    font-size: 14px;
    border-bottom: 1px solid var(--border);
}
.price-features li::before {
    content: '\2713';
    color: var(--gain);
    margin-right: 10px;
    font-weight: 700;
}

/* FAQ */
.faq {
    padding: 60px 0;
}
.faq h2 {
    text-align: center;
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 40px;
}
.faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 20px 24px;
    margin-bottom: 12px;
}
.faq-item h3 {
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--accent);
}
.faq-item p {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.7;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--border);
    padding: 32px 24px;
    text-align: center;
    font-size: 12px;
    color: var(--muted);
    font-family: var(--font-mono);
}
.footer-links {
    display: flex;
    gap: 24px;
    justify-content: center;
    margin-bottom: 12px;
}
.footer-links a {
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }

/* ---- BUY PAGE ---- */
.buy-container {
    max-width: 500px;
    margin: 60px auto;
    padding: 0 24px;
}
.buy-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
}
.buy-card h2 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 24px;
    text-align: center;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text);
}
.form-group input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 15px;
    font-family: var(--font-mono);
    outline: none;
    transition: border-color 0.2s;
}
.form-group input:focus {
    border-color: var(--accent);
}
.form-help {
    font-size: 11px;
    color: var(--muted);
    margin-top: 4px;
    font-family: var(--font-mono);
}
.price-tag {
    text-align: center;
    font-size: 14px;
    color: var(--muted);
    font-family: var(--font-mono);
    margin: 20px 0;
    padding: 12px;
    background: rgba(0,212,255,0.05);
    border-radius: 8px;
    border: 1px solid var(--border);
}

/* ---- SUCCESS PAGE ---- */
.success-container {
    max-width: 550px;
    margin: 60px auto;
    padding: 0 24px;
    text-align: center;
}
.success-card {
    background: var(--surface);
    border: 2px solid var(--gain);
    border-radius: 16px;
    padding: 40px;
}
.success-icon {
    font-size: 64px;
    margin-bottom: 16px;
}
.success-card h2 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 24px;
    color: var(--gain);
}
.license-key-display {
    background: var(--bg);
    border: 2px dashed var(--accent);
    border-radius: 12px;
    padding: 20px;
    margin: 24px 0;
    font-family: var(--font-mono);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--accent);
    position: relative;
}
.copy-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--accent);
    color: var(--bg);
    border: none;
    border-radius: 6px;
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
}

/* ---- TOOL PAGE ---- */
.tool-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
    position: relative;
    z-index: 1;
}

/* License gate */
.license-gate {
    max-width: 500px;
    margin: 80px auto;
    text-align: center;
}
.license-gate h2 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 8px;
}
.license-gate p {
    color: var(--muted);
    font-size: 13px;
    font-family: var(--font-mono);
    margin-bottom: 24px;
}
.key-form {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}
.key-form input {
    flex: 1;
    padding: 14px 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 16px;
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 1px;
    outline: none;
}
.key-form input:focus { border-color: var(--accent); }
.key-form button {
    padding: 14px 24px;
}
.key-error {
    color: var(--loss);
    font-size: 13px;
    font-family: var(--font-mono);
    margin-top: 12px;
    display: none;
    background: rgba(239,68,68,0.08);
    border: 1px solid rgba(239,68,68,0.2);
    border-radius: 8px;
    padding: 12px 16px;
    line-height: 1.6;
}
.key-error.show { display: block; }
.key-error a { color: var(--accent); text-decoration: underline; }

/* License status bar */
.license-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 10px 16px;
    margin-bottom: 20px;
    font-size: 13px;
    font-family: var(--font-mono);
}
.license-bar .status {
    color: var(--gain);
}
.license-bar .expires {
    color: var(--muted);
}
.license-bar .change-key {
    color: var(--accent);
    cursor: pointer;
    text-decoration: underline;
    background: none;
    border: none;
    font-family: var(--font-mono);
    font-size: 12px;
}

/* Disclaimer banner */
.disclaimer-banner {
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: 8px;
    padding: 10px 16px;
    font-size: 11px;
    color: var(--warn);
    font-family: var(--font-mono);
    margin-bottom: 20px;
    text-align: center;
}

/* ---- ADMIN ---- */
.admin-layout {
    display: flex;
    min-height: 100vh;
}
.admin-sidebar {
    width: 240px;
    background: var(--surface);
    border-right: 1px solid var(--border);
    padding: 20px;
    flex-shrink: 0;
}
.admin-sidebar h2 {
    font-size: 16px;
    font-weight: 800;
    margin-bottom: 24px;
    color: var(--accent);
}
.admin-sidebar a {
    display: block;
    padding: 10px 12px;
    color: var(--muted);
    text-decoration: none;
    font-size: 14px;
    border-radius: 6px;
    margin-bottom: 4px;
    transition: all 0.2s;
}
.admin-sidebar a:hover, .admin-sidebar a.active {
    background: var(--surface2);
    color: var(--text);
}
.admin-main {
    flex: 1;
    padding: 24px 32px;
}
.admin-main h1 {
    font-size: 24px;
    font-weight: 800;
    margin-bottom: 24px;
}

.stat-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}
.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
}
.stat-card .label {
    font-size: 12px;
    color: var(--muted);
    font-family: var(--font-mono);
    margin-bottom: 8px;
}
.stat-card .value {
    font-size: 28px;
    font-weight: 800;
}
.stat-card .value.accent { color: var(--accent); }
.stat-card .value.gain { color: var(--gain); }
.stat-card .value.warn { color: var(--warn); }

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}
.data-table th {
    text-align: left;
    padding: 10px 12px;
    background: var(--surface);
    border-bottom: 2px solid var(--border);
    font-weight: 700;
    color: var(--muted);
    font-family: var(--font-mono);
    font-size: 11px;
    text-transform: uppercase;
}
.data-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
}
.data-table tr:hover { background: var(--surface2); }

.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    font-family: var(--font-mono);
}
.badge-active { background: rgba(34,197,94,0.15); color: var(--gain); }
.badge-expired { background: rgba(100,116,139,0.15); color: var(--muted); }
.badge-revoked { background: rgba(239,68,68,0.15); color: var(--loss); }
.badge-completed { background: rgba(34,197,94,0.15); color: var(--gain); }
.badge-pending { background: rgba(245,158,11,0.15); color: var(--warn); }

.admin-actions {
    display: flex;
    gap: 6px;
}
.admin-actions a, .admin-actions button {
    padding: 4px 10px;
    font-size: 11px;
    border-radius: 4px;
    text-decoration: none;
    cursor: pointer;
    font-family: var(--font-mono);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    transition: all 0.2s;
}
.admin-actions a:hover, .admin-actions button:hover {
    border-color: var(--accent);
    color: var(--accent);
}
.admin-actions .danger { color: var(--loss); }
.admin-actions .danger:hover { border-color: var(--loss); }

/* Login page */
.login-container {
    max-width: 400px;
    margin: 100px auto;
    padding: 0 24px;
}
.login-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
}
.login-card h2 {
    text-align: center;
    margin-bottom: 24px;
}
.login-error {
    background: rgba(239,68,68,0.1);
    border: 1px solid var(--loss);
    color: var(--loss);
    padding: 10px;
    border-radius: 6px;
    font-size: 13px;
    margin-bottom: 16px;
    text-align: center;
}

/* Generate key form */
.generate-form {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    max-width: 500px;
}
.generate-form h3 {
    font-size: 16px;
    margin-bottom: 16px;
}
.generate-result {
    background: var(--bg);
    border: 2px dashed var(--accent);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 18px;
    color: var(--accent);
    letter-spacing: 1px;
    margin-top: 16px;
}

/* Legal pages */
.legal-container {
    max-width: 800px;
    margin: 40px auto;
    padding: 0 24px;
}
.legal-container h1 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 32px;
}
.legal-container h2 {
    font-size: 18px;
    font-weight: 700;
    margin: 24px 0 12px;
    color: var(--accent);
}
.legal-container p, .legal-container li {
    font-size: 14px;
    color: var(--muted);
    line-height: 1.8;
    margin-bottom: 12px;
}
.legal-container ul {
    padding-left: 20px;
    margin-bottom: 16px;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 28px; }
    .hero p { font-size: 14px; }
    .features-grid { grid-template-columns: 1fr; }
    .nav-links { gap: 12px; }
    .nav-links a { font-size: 12px; }
    .admin-sidebar { width: 180px; }
    .stat-cards { grid-template-columns: 1fr 1fr; }
}