:root {
    --bg: #ffffff; --bg2: #f5f5f5; --bg3: #e8e8e8;
    --card: #ffffff; --border: #e0e0e0;
    --text: #111111; --text2: #555555; --text3: #888888;
    --accent: #000000; --accent2: #333333;
    --btn-bg: #000000; --btn-text: #ffffff;
    --input-bg: #f5f5f5; --input-border: #ddd;
    --status-active: #16a34a; --status-pending: #d97706; --status-suspended: #dc2626;
    --shadow: 0 1px 3px rgba(0,0,0,0.08);
    --radius: 10px;
}
[data-theme="dark"] {
    --bg: #0a0a0a; --bg2: #141414; --bg3: #1e1e1e;
    --card: #141414; --border: #2a2a2a;
    --text: #f0f0f0; --text2: #999999; --text3: #666666;
    --accent: #ffffff; --accent2: #cccccc;
    --btn-bg: #ffffff; --btn-text: #000000;
    --input-bg: #1a1a1a; --input-border: #333;
    --shadow: 0 1px 3px rgba(0,0,0,0.3);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, 'Inter', 'Segoe UI', sans-serif;
    background: var(--bg); color: var(--text);
    min-height: 100vh; display: flex; flex-direction: column;
    transition: background 0.3s, color 0.3s;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--text); text-decoration: none; }
a:hover { opacity: 0.7; }

/* NAV */
.navbar { background: var(--bg); border-bottom: 1px solid var(--border); padding: 0 1.5rem; position: sticky; top: 0; z-index: 100; transition: all 0.3s; }
.navbar-inner { max-width: 1100px; margin: 0 auto; display: flex; align-items: center; justify-content: space-between; height: 56px; }
.nav-brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1rem; }
.nav-brand img { height: 28px; width: 28px; border-radius: 6px; }
.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a, .nav-links button {
    color: var(--text2); padding: 6px 12px; border-radius: 6px;
    font-size: 0.8rem; font-weight: 500; border: none; background: none;
    cursor: pointer; font-family: inherit; transition: all 0.2s;
}
.nav-links a:hover, .nav-links button:hover { color: var(--text); background: var(--bg3); }
.nav-links a.active { color: var(--text); font-weight: 700; }
.nav-links .btn-sm { background: var(--btn-bg); color: var(--btn-text); padding: 6px 14px; border-radius: 6px; font-weight: 600; }

/* THEME TOGGLE */
.theme-toggle { width: 36px; height: 20px; border-radius: 10px; background: var(--bg3); border: 1px solid var(--border); cursor: pointer; position: relative; transition: all 0.3s; }
.theme-toggle::after { content: ''; position: absolute; top: 2px; left: 2px; width: 14px; height: 14px; border-radius: 50%; background: var(--btn-bg); transition: transform 0.3s; }
[data-theme="dark"] .theme-toggle::after { transform: translateX(16px); }

/* MAIN */
main { flex: 1; max-width: 1100px; margin: 0 auto; width: 100%; padding: 1.5rem; }

/* CARDS */
.card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; transition: all 0.2s; box-shadow: var(--shadow); }

/* FORMS */
.form-group { margin-bottom: 0.875rem; }
.form-group label { display: block; font-size: 0.7rem; font-weight: 600; color: var(--text3); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.5px; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 10px 12px; background: var(--input-bg); border: 1px solid var(--input-border);
    border-radius: 8px; color: var(--text); font-size: 0.85rem; font-family: inherit; transition: border 0.2s;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--text); }
.form-card { max-width: 420px; margin: 2rem auto; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.75rem; }
.form-card h2 { text-align: center; margin-bottom: 1.25rem; font-size: 1.2rem; }
.form-footer { text-align: center; margin-top: 0.75rem; font-size: 0.8rem; color: var(--text3); }

/* BUTTONS */
.btn { display: inline-flex; align-items: center; gap: 6px; padding: 10px 20px; border-radius: 8px; font-weight: 600; font-size: 0.85rem; border: none; cursor: pointer; font-family: inherit; transition: all 0.2s; }
.btn-primary { background: var(--btn-bg); color: var(--btn-text); }
.btn-primary:hover { opacity: 0.85; }
.btn-secondary { background: var(--bg3); color: var(--text); }
.btn-danger { background: #dc2626; color: #fff; }
.btn-success { background: #16a34a; color: #fff; }
.btn-sm { padding: 6px 14px; font-size: 0.75rem; }

/* PRODUCTS */
.products-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }
.product-card { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; transition: all 0.2s; box-shadow: var(--shadow); }
.product-card:hover { border-color: var(--text); }
.product-card.popular { border-width: 2px; border-color: var(--text); }
.product-card .tier-label { font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--text3); margin-bottom: 4px; }
.product-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.5rem; }
.product-card .price { font-size: 1.6rem; font-weight: 800; margin: 0.75rem 0; }
.product-card .price span { font-size: 0.8rem; font-weight: 400; color: var(--text3); }
.product-card .specs { list-style: none; margin-bottom: 1rem; }
.product-card .specs li { padding: 4px 0; font-size: 0.8rem; color: var(--text2); display: flex; align-items: center; gap: 6px; }
.product-card .specs li i { color: var(--text3); font-size: 0.7rem; width: 14px; }

/* SECTION */
.section-title { text-align: center; margin: 2rem 0 1.5rem; }
.section-title h2 { font-size: 1.4rem; font-weight: 800; margin-bottom: 0.25rem; }
.section-title p { color: var(--text3); font-size: 0.85rem; }

/* TABS */
.tabs { display: flex; gap: 4px; margin-bottom: 1.5rem; background: var(--bg2); padding: 4px; border-radius: 8px; width: fit-content; }
.tab { padding: 6px 16px; border-radius: 6px; font-size: 0.75rem; font-weight: 600; color: var(--text3); cursor: pointer; border: none; background: none; font-family: inherit; transition: all 0.2s; }
.tab.active { background: var(--card); color: var(--text); box-shadow: var(--shadow); }

/* TABLE */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
table th { text-align: left; padding: 10px 14px; font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text3); border-bottom: 1px solid var(--border); }
table td { padding: 12px 14px; font-size: 0.8rem; border-bottom: 1px solid var(--border); }

/* STATUS */
.badge { padding: 3px 10px; border-radius: 20px; font-size: 0.65rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.3px; }
.badge-active, .badge-paid { background: rgba(22,163,74,0.1); color: var(--status-active); }
.badge-pending, .badge-waiting { background: rgba(217,119,6,0.1); color: var(--status-pending); }
.badge-suspended, .badge-cancelled { background: rgba(220,38,38,0.1); color: var(--status-suspended); }

/* DASHBOARD */
.dash-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.5rem; }
.dash-header h1 { font-size: 1.3rem; font-weight: 700; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.75rem; margin-bottom: 1.5rem; }
.stat { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem; text-align: center; box-shadow: var(--shadow); }
.stat .val { font-size: 1.3rem; font-weight: 800; }
.stat .lbl { font-size: 0.65rem; color: var(--text3); margin-top: 2px; text-transform: uppercase; letter-spacing: 0.5px; }
.service-item { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.25rem; display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; transition: all 0.2s; }
.service-item:hover { border-color: var(--text3); }
.service-info h3 { font-size: 0.9rem; font-weight: 600; }
.service-info p { font-size: 0.75rem; color: var(--text3); margin-top: 2px; }

/* EMPTY */
.empty { text-align: center; padding: 3rem 1rem; color: var(--text3); }
.empty i { font-size: 2.5rem; margin-bottom: 0.75rem; display: block; }
.empty p { margin-bottom: 1rem; }

/* ALERTS */
.alert { padding: 10px 14px; border-radius: 8px; margin-bottom: 1rem; font-size: 0.8rem; }
.alert-error { background: rgba(220,38,38,0.08); border: 1px solid rgba(220,38,38,0.2); color: #dc2626; }
.alert-success { background: rgba(22,163,74,0.08); border: 1px solid rgba(22,163,74,0.2); color: #16a34a; }

/* QR */
.qr-box { text-align: center; padding: 2rem; }
.qr-box img { border-radius: 12px; margin: 1rem 0; border: 1px solid var(--border); }
.qr-box .upi-id { font-size: 0.85rem; color: var(--text3); margin-bottom: 0.5rem; }
.qr-box .amount { font-size: 2rem; font-weight: 800; margin: 0.5rem 0; }

/* FOOTER */
.footer { background: var(--bg2); border-top: 1px solid var(--border); padding: 1.5rem; text-align: center; margin-top: 3rem; transition: all 0.3s; }
.footer p { font-size: 0.75rem; color: var(--text3); }
.footer a { color: var(--text2); }

/* CHECKOUT */
.checkout-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.plan-summary { background: var(--bg2); border-radius: 8px; padding: 1.25rem; margin-bottom: 1rem; }
.plan-summary h3 { font-size: 0.95rem; font-weight: 700; margin-bottom: 0.5rem; }
.plan-summary .detail { font-size: 0.8rem; color: var(--text2); padding: 3px 0; }

@media (max-width: 768px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .products-grid { grid-template-columns: 1fr; }
    .checkout-grid { grid-template-columns: 1fr; }
    .nav-links a.hide-mobile { display: none; }
}