/* ===== RESET & BASE ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --black: #1D1D1F;
    --gray-900: #333336;
    --gray-600: #6E6E73;
    --gray-400: #86868B;
    --gray-300: #AEAEB2;
    --gray-200: #D2D2D7;
    --gray-100: #E8E8ED;
    --gray-50: #F5F5F7;
    --white: #FFFFFF;
    --blue: #0071E3;
    --blue-hover: #0077ED;
    --green: #34C759;
    --red: #FF3B30;
    --orange: #FF9500;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-xs: 6px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.12);
    --transition: 200ms cubic-bezier(0.25, 0.1, 0.25, 1);
    --font: 'DM Sans', -apple-system, 'Helvetica Neue', sans-serif;
    --mono: 'JetBrains Mono', 'SF Mono', 'Menlo', monospace;
}

html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); color: var(--black); background: var(--gray-50); line-height: 1.5; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
input, select, button { font-family: inherit; font-size: inherit; }

/* ==============================
   SHOP PAGES
   ============================== */

.shop-page {
    background: linear-gradient(180deg, #FBFBFD 0%, var(--gray-50) 100%);
    min-height: 100vh;
}

.shop-container {
    max-width: 640px;
    margin: 0 auto;
    padding: 48px 24px 64px;
}

/* Header */
.shop-header {
    text-align: center;
    margin-bottom: 40px;
}
.brand {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-400);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    margin-bottom: 12px;
}
.shop-header h1 {
    font-size: 40px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--black);
    margin-bottom: 8px;
}
.subtitle {
    font-size: 17px;
    color: var(--gray-600);
    max-width: 440px;
    margin: 0 auto;
    line-height: 1.5;
}

/* Pricing tiers */
.pricing-tiers {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 32px;
}
.tier {
    background: var(--white);
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 20px 16px;
    text-align: center;
    transition: var(--transition);
    cursor: default;
    position: relative;
}
.tier.active, .tier:hover {
    border-color: var(--blue);
    box-shadow: 0 0 0 1px var(--blue);
}
.tier-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--blue);
    color: var(--white);
    font-size: 10px;
    font-weight: 700;
    padding: 3px 10px;
    border-radius: 20px;
    white-space: nowrap;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}
.tier-badge.best {
    background: var(--green);
}
.tier-qty {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: 4px;
}
.tier-price {
    font-size: 26px;
    font-weight: 700;
    color: var(--black);
}
.tier-unit {
    font-size: 12px;
    color: var(--gray-400);
}

/* Order card */
.order-card {
    background: var(--white);
    border-radius: 16px;
    padding: 32px;
    box-shadow: var(--shadow);
    margin-bottom: 32px;
}
.order-card h2 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 24px;
}

/* Form groups */
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: 6px;
}
.form-group input[type="email"],
.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 16px;
    color: var(--black);
    background: var(--white);
    transition: var(--transition);
    outline: none;
}
.form-group input:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(0,113,227,0.12);
}

.field-error {
    font-size: 13px;
    color: var(--red);
    margin-top: 6px;
}

/* Quantity control */
.qty-control {
    display: flex;
    align-items: center;
    gap: 0;
    background: var(--gray-50);
    border-radius: var(--radius-sm);
    border: 1.5px solid var(--gray-200);
    overflow: hidden;
    width: fit-content;
}
.qty-btn {
    width: 48px;
    height: 48px;
    border: none;
    background: transparent;
    font-size: 20px;
    color: var(--blue);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}
.qty-btn:hover { background: var(--gray-100); }
.qty-btn:active { background: var(--gray-200); }
.qty-control input {
    width: 72px;
    height: 48px;
    border: none;
    background: var(--white);
    text-align: center;
    font-size: 18px;
    font-weight: 700;
    color: var(--black);
    outline: none;
    -moz-appearance: textfield;
    border-left: 1px solid var(--gray-200);
    border-right: 1px solid var(--gray-200);
}
.qty-control input::-webkit-inner-spin-button { -webkit-appearance: none; }

.qty-shortcuts {
    display: flex;
    gap: 8px;
    margin-top: 10px;
}
.shortcut {
    padding: 6px 16px;
    border-radius: 20px;
    border: 1.5px solid var(--gray-200);
    background: var(--white);
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition);
}
.shortcut:hover {
    border-color: var(--blue);
    color: var(--blue);
}

/* Price summary */
.price-summary {
    background: var(--gray-50);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    margin-bottom: 24px;
}
.price-row {
    display: flex;
    justify-content: space-between;
    font-size: 15px;
    color: var(--gray-600);
    padding: 4px 0;
}
.price-row.total {
    font-size: 20px;
    font-weight: 700;
    color: var(--black);
    padding-top: 8px;
}
.price-divider {
    height: 1px;
    background: var(--gray-200);
    margin: 8px 0;
}
.price-savings {
    text-align: center;
    font-size: 13px;
    color: var(--green);
    font-weight: 600;
    margin-top: 8px;
}

/* Payment */
.payment-section {
    margin-top: 28px;
    animation: fadeIn 300ms ease;
}
.payment-section h3 {
    font-size: 15px;
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: 16px;
}
.pay-btn {
    width: 100%;
    padding: 14px 24px;
    border-radius: var(--radius-sm);
    border: none;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.stripe-btn {
    background: var(--black);
    color: var(--white);
}
.stripe-btn:hover { background: #333; }
.stripe-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.pay-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 20px 0;
    color: var(--gray-400);
    font-size: 13px;
}
.pay-divider::before,
.pay-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--gray-200);
}

.form-notice {
    text-align: center;
    font-size: 14px;
    color: var(--gray-400);
    margin-top: 16px;
    padding: 16px;
    background: var(--gray-50);
    border-radius: var(--radius-sm);
}

/* Info section */
.info-section {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin-bottom: 40px;
}
.info-item {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    padding: 16px 20px;
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--gray-100);
}
.info-icon { font-size: 24px; flex-shrink: 0; }
.info-item strong { display: block; font-size: 14px; margin-bottom: 2px; }
.info-item p { font-size: 13px; color: var(--gray-600); margin: 0; }

/* Footer */
.shop-footer {
    text-align: center;
    font-size: 12px;
    color: var(--gray-400);
    padding-top: 24px;
    border-top: 1px solid var(--gray-200);
}

/* Success page */
.success-container { text-align: center; }
.success-card {
    background: var(--white);
    border-radius: 16px;
    padding: 40px 32px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}
.success-icon {
    width: 64px;
    height: 64px;
    background: var(--green);
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--white);
    margin-bottom: 20px;
}
.success-card h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
}
.success-subtitle {
    font-size: 15px;
    color: var(--gray-600);
}
.success-notice {
    margin-top: 20px;
    padding: 12px 20px;
    background: var(--gray-50);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--gray-600);
}

.tokens-card {
    background: var(--white);
    border-radius: 16px;
    padding: 32px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
    text-align: left;
}
.tokens-card h2 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 4px;
}
.tokens-hint {
    font-size: 13px;
    color: var(--gray-400);
    margin-bottom: 20px;
}
.token-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
}
.token-item {
    background: var(--gray-50);
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}
.token-item:hover {
    border-color: var(--blue);
    background: #F0F5FF;
}
.token-label {
    display: block;
    font-size: 11px;
    color: var(--gray-400);
    font-weight: 600;
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.token-code {
    display: block;
    font-family: var(--mono);
    font-size: 18px;
    font-weight: 700;
    color: var(--black);
    letter-spacing: 2px;
}
.token-copy-hint {
    display: block;
    font-size: 10px;
    color: var(--gray-300);
    margin-top: 4px;
}

.success-actions {
    margin-bottom: 40px;
}
.btn-download {
    display: inline-block;
    padding: 14px 28px;
    background: var(--blue);
    color: var(--white);
    font-weight: 600;
    font-size: 16px;
    border-radius: 980px;
    transition: var(--transition);
    text-decoration: none;
    margin-bottom: 12px;
}
.btn-download:hover { background: var(--blue-hover); text-decoration: none; }
.btn-back {
    display: block;
    font-size: 14px;
    color: var(--blue);
    margin-top: 12px;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--black);
    color: var(--white);
    padding: 12px 24px;
    border-radius: 980px;
    font-size: 14px;
    font-weight: 500;
    z-index: 1000;
    opacity: 0;
    transition: all 300ms ease;
    white-space: nowrap;
}
.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}
.toast.error { background: var(--red); }

/* ==============================
   ADMIN PAGES
   ============================== */

.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.admin-sidebar {
    width: 240px;
    background: var(--white);
    border-right: 1px solid var(--gray-100);
    display: flex;
    flex-direction: column;
    padding: 24px 16px;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 10;
}
.sidebar-brand {
    padding: 0 8px 24px;
    border-bottom: 1px solid var(--gray-100);
    margin-bottom: 16px;
}
.brand-text {
    display: block;
    font-size: 15px;
    font-weight: 700;
    color: var(--black);
}
.brand-sub {
    font-size: 11px;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 600;
}

.sidebar-nav {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-xs);
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-600);
    text-decoration: none;
    transition: var(--transition);
}
.nav-item:hover { background: var(--gray-50); color: var(--black); text-decoration: none; }
.nav-item.active { background: var(--gray-50); color: var(--blue); font-weight: 600; }
.nav-icon { font-size: 18px; }
.sidebar-footer {
    padding-top: 16px;
    border-top: 1px solid var(--gray-100);
}
.admin-user {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-600);
    padding: 0 12px 8px;
}
.nav-item.logout { color: var(--red); font-size: 13px; }

/* Main */
.admin-main {
    flex: 1;
    margin-left: 240px;
    padding: 32px 40px;
    max-width: 1200px;
}

.admin-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}
.admin-header h1 {
    font-size: 28px;
    font-weight: 700;
}
.back-link {
    font-size: 13px;
    color: var(--blue);
}

/* KPI grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}
.kpi-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px 24px;
    border: 1px solid var(--gray-100);
}
.kpi-card.accent {
    background: var(--blue);
    border-color: var(--blue);
}
.kpi-card.accent .kpi-label,
.kpi-card.accent .kpi-value { color: var(--white); }
.kpi-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}
.kpi-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--black);
}

/* Stats row */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}
.stat-item {
    text-align: center;
    padding: 16px;
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--gray-100);
}
.stat-number {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--black);
}
.stat-label {
    font-size: 12px;
    color: var(--gray-400);
}

/* Chart card */
.chart-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--gray-100);
    margin-bottom: 24px;
}
.chart-card h2 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
}

/* Table card */
.table-card {
    background: var(--white);
    border-radius: var(--radius);
    border: 1px solid var(--gray-100);
    overflow: hidden;
    margin-bottom: 24px;
}
.table-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px 0;
}
.table-header h2 { font-size: 16px; font-weight: 700; }
.view-all { font-size: 13px; font-weight: 500; }

.data-table {
    width: 100%;
    border-collapse: collapse;
}
.data-table thead th {
    font-size: 11px;
    font-weight: 600;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: left;
    padding: 16px 16px 8px;
    border-bottom: 1px solid var(--gray-100);
}
.data-table tbody td {
    padding: 12px 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--gray-50);
    color: var(--gray-900);
}
.data-table tbody tr { cursor: pointer; transition: var(--transition); }
.data-table tbody tr:hover { background: var(--gray-50); }
.data-table.compact td { padding: 8px 12px; font-size: 13px; }
.data-table.compact th { padding: 12px 12px 6px; }

.mono { font-family: var(--mono); font-size: 13px !important; }
.token-code-cell { letter-spacing: 1px; font-weight: 600; }

.empty-state {
    text-align: center;
    padding: 40px 16px !important;
    color: var(--gray-400);
    font-size: 14px;
}

/* Status badges */
.status-badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.3px;
    text-transform: uppercase;
}
.status-paid { background: rgba(52,199,89,0.12); color: #1B7A2F; }
.status-pending { background: rgba(255,149,0,0.12); color: #A35F00; }
.status-failed { background: rgba(255,59,48,0.12); color: #C7291E; }
.status-refunded { background: rgba(142,142,147,0.12); color: #636366; }
.status-active { background: rgba(0,113,227,0.12); color: #0055B3; }
.status-redeemed { background: rgba(142,142,147,0.12); color: #636366; }

/* Filter bar */
.filter-bar {
    margin-bottom: 16px;
}
.filter-form {
    display: flex;
    gap: 10px;
    align-items: center;
}
.filter-input {
    flex: 1;
    max-width: 300px;
    padding: 10px 14px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 14px;
    outline: none;
    transition: var(--transition);
}
.filter-input:focus { border-color: var(--blue); }
.filter-select {
    padding: 10px 14px;
    border: 1.5px solid var(--gray-200);
    border-radius: var(--radius-sm);
    font-size: 14px;
    background: var(--white);
    outline: none;
    cursor: pointer;
}
.filter-btn {
    padding: 10px 20px;
    background: var(--blue);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.filter-btn:hover { background: var(--blue-hover); }

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    padding: 16px;
}
.page-btn {
    font-size: 13px;
    font-weight: 600;
    color: var(--blue);
}
.page-info {
    font-size: 13px;
    color: var(--gray-400);
}

/* Detail page */
.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}
.detail-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--gray-100);
}
.detail-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
}
.detail-list {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: 8px 16px;
    font-size: 14px;
}
.detail-list dt {
    color: var(--gray-400);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    padding-top: 2px;
}
.detail-list dd { color: var(--gray-900); }

.btn-small {
    display: inline-block;
    padding: 8px 16px;
    background: var(--blue);
    color: var(--white);
    border-radius: 980px;
    font-size: 13px;
    font-weight: 600;
    margin-top: 16px;
    text-decoration: none;
    transition: var(--transition);
}
.btn-small:hover { background: var(--blue-hover); text-decoration: none; }

.btn-tiny {
    padding: 4px 12px;
    background: var(--gray-50);
    border: 1px solid var(--gray-200);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-600);
    cursor: pointer;
    transition: var(--transition);
}
.btn-tiny:hover { background: var(--gray-100); }

.link { color: var(--blue); text-decoration: none; }
.link:hover { text-decoration: underline; }

/* Login page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}
.admin-login-container { width: 100%; max-width: 400px; padding: 24px; }
.login-card {
    background: var(--white);
    border-radius: 16px;
    padding: 40px 32px;
    box-shadow: var(--shadow-lg);
    text-align: center;
}
.login-brand {
    font-size: 13px;
    font-weight: 600;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}
.login-card h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 28px;
}
.login-card .form-group { text-align: left; }
.btn-login {
    width: 100%;
    padding: 14px;
    background: var(--blue);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 8px;
}
.btn-login:hover { background: var(--blue-hover); }

/* Flash messages */
.flash {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    margin-bottom: 16px;
}
.flash-error { background: rgba(255,59,48,0.1); color: var(--red); }
.flash-success { background: rgba(52,199,89,0.1); color: #1B7A2F; }

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Mobile */
@media (max-width: 768px) {
    .pricing-tiers { grid-template-columns: 1fr; }
    .order-card { padding: 24px 20px; }
    .shop-header h1 { font-size: 32px; }
    
    .admin-sidebar {
        width: 100%;
        position: relative;
        flex-direction: row;
        padding: 12px 16px;
        gap: 8px;
        align-items: center;
    }
    .sidebar-brand { padding: 0; border: none; margin: 0; }
    .brand-sub { display: none; }
    .sidebar-nav { flex-direction: row; gap: 4px; }
    .nav-item { padding: 8px 10px; font-size: 13px; }
    .nav-icon { display: none; }
    .sidebar-footer { display: flex; gap: 8px; align-items: center; padding: 0; border: none; }
    .admin-user { display: none; }
    
    .admin-layout { flex-direction: column; }
    .admin-main { margin-left: 0; padding: 20px 16px; }
    
    .kpi-grid { grid-template-columns: repeat(2, 1fr); }
    .stats-row { grid-template-columns: repeat(2, 1fr); }
    .detail-grid { grid-template-columns: 1fr; }
    
    .data-table { font-size: 13px; }
    .filter-form { flex-wrap: wrap; }
}