:root {
    --cf-bg: #f5f7fb;
    --cf-surface: #ffffff;
    --cf-text: #0f172a;
    --cf-muted: #64748b;
    --cf-border: rgba(15, 23, 42, 0.08);
    --cf-primary: #0d6efd;
    --cf-primary-2: #4f46e5;
    --cf-success: #16a34a;
    --cf-warning: #f59e0b;
    --cf-danger: #dc2626;
    --cf-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
    --cf-gradient: linear-gradient(135deg, #0d6efd, #4f46e5);
}

body.dark-mode {
    --cf-bg: #081120;
    --cf-surface: #101c30;
    --cf-text: #e5eefc;
    --cf-muted: #9eb0cb;
    --cf-border: rgba(226, 232, 240, 0.08);
    --cf-primary: #4f8cff;
    --cf-primary-2: #8b5cf6;
    --cf-success: #22c55e;
    --cf-warning: #fbbf24;
    --cf-danger: #ef4444;
    --cf-shadow: 0 20px 40px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: linear-gradient(180deg, rgba(13,110,253,0.04), transparent 22%), var(--cf-bg);
    color: var(--cf-text);
    transition: background .25s ease, color .25s ease;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { text-decoration: none; }
.small-muted { color: var(--cf-muted); font-size: 0.875rem; }

.surface {
    background: var(--cf-surface);
    border: 1px solid var(--cf-border);
    box-shadow: var(--cf-shadow);
    border-radius: 24px;
}

.surface-sm {
    background: var(--cf-surface);
    border: 1px solid var(--cf-border);
    border-radius: 18px;
}

.hero-card {
    background: var(--cf-gradient);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.hero-card::after {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
}

.brand-mark {
    width: 42px;
    height: 42px;
    border-radius: 14px;
    background: var(--cf-gradient);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    box-shadow: 0 12px 24px rgba(13, 110, 253, 0.25);
}

.navbar-glass {
    backdrop-filter: blur(12px);
    background: rgba(255,255,255,0.75);
    border-bottom: 1px solid var(--cf-border);
}

body.dark-mode .navbar-glass {
    background: rgba(7, 15, 27, 0.8);
}

.page-shell {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px 18px 110px;
}

.auth-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.auth-card {
    width: min(100%, 520px);
    padding: 32px;
}

.form-control, .form-select {
    background: var(--cf-surface);
    border-radius: 14px;
    padding: 12px 16px;
    border: 1px solid var(--cf-border);
    color: var(--cf-text);
    transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus {
    border-color: var(--cf-primary);
    box-shadow: 0 0 0 4px rgba(13, 110, 253, 0.1);
    outline: none;
}

body.dark-mode .form-control,
body.dark-mode .form-select {
    background: rgba(255,255,255,0.05);
    color: var(--cf-text);
}

.form-control::placeholder { color: var(--cf-muted); }
.form-label { font-weight: 600; font-size: 0.9rem; margin-bottom: 0.5rem; }

.btn-primary {
    background: var(--cf-gradient);
    border: none;
    border-radius: 14px;
    padding: 12px 20px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(13, 110, 253, 0.3);
}

.btn-outline-primary {
    border: 2px solid var(--cf-primary);
    color: var(--cf-primary);
    border-radius: 14px;
    padding: 12px 20px;
    font-weight: 600;
    background: transparent;
    transition: all 0.3s ease;
}

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

.card-balance {
    overflow: hidden;
    position: relative;
}

.card-balance::after {
    content: "";
    position: absolute;
    inset: auto -30px -30px auto;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: rgba(255,255,255,0.08);
}

.balance-amount {
    font-size: clamp(1.6rem, 3vw, 2.5rem);
    font-weight: 800;
    letter-spacing: -0.5px;
}

.quick-pill {
    padding: 8px 16px;
    border-radius: 999px;
    background: rgba(13, 110, 253, 0.1);
    color: var(--cf-primary);
    font-weight: 600;
    font-size: 0.875rem;
    display: inline-flex;
    gap: 8px;
    align-items: center;
}

.status-pill {
    display: inline-flex;
    gap: 6px;
    align-items: center;
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-success { background: rgba(22, 163, 74, 0.12); color: var(--cf-success); }
.status-warning { background: rgba(245, 158, 11, 0.12); color: var(--cf-warning); }
.status-danger { background: rgba(220, 38, 38, 0.12); color: var(--cf-danger); }
.status-info { background: rgba(13, 110, 253, 0.12); color: var(--cf-primary); }

.notice-box {
    border-left: 5px solid var(--cf-danger);
    background: rgba(220, 38, 38, 0.08);
    border-radius: 18px;
    padding: 20px;
}

.user-avatar {
    width: 86px;
    height: 86px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid rgba(13,110,253,0.2);
}

.bottom-nav {
    position: fixed;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    width: min(96%, 560px);
    z-index: 1030;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(20px);
    border: 1px solid var(--cf-border);
    border-radius: 24px;
    padding: 12px 8px;
    box-shadow: 0 24px 45px rgba(15, 23, 42, 0.15);
}

body.dark-mode .bottom-nav {
    background: rgba(10, 16, 29, 0.95);
}

.bottom-nav .nav-link {
    color: var(--cf-muted);
    border-radius: 16px;
    padding: 10px 16px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.bottom-nav .nav-link.active,
.bottom-nav .nav-link:hover {
    background: rgba(13, 110, 253, 0.12);
    color: var(--cf-primary);
}

.metric-tile {
    padding: 20px;
}

.table {
    --bs-table-bg: transparent;
    color: var(--cf-text);
}

.table thead th {
    color: var(--cf-muted);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--cf-border);
    padding: 12px 16px;
}

.table tbody td {
    vertical-align: middle;
    border-color: var(--cf-border);
    padding: 12px 16px;
}

.receipt-card {
    background: var(--cf-surface);
    border: 2px dashed var(--cf-border);
    border-radius: 22px;
    padding: 24px;
}

.feature-icon {
    width: 56px;
    height: 56px;
    border-radius: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(13, 110, 253, 0.12);
    color: var(--cf-primary);
    font-size: 1.4rem;
}

.admin-sidebar-card {
    min-height: 100%;
    padding: 24px;
}

.role-badge {
    background: rgba(79, 70, 229, 0.14);
    color: var(--cf-primary-2);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 700;
    display: inline-block;
}

.preloader {
    position: fixed;
    inset: 0;
    background: var(--cf-bg);
    display: grid;
    place-items: center;
    z-index: 2000;
    transition: opacity .35s ease, visibility .35s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader-ring {
    width: 62px;
    height: 62px;
    border-radius: 50%;
    border: 5px solid rgba(13, 110, 253, 0.12);
    border-top-color: var(--cf-primary);
    animation: spin 1s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

.hero-gradient {
    background: linear-gradient(135deg, rgba(13, 110, 253, 0.08), rgba(79, 70, 229, 0.08));
}

.mini-card {
    min-height: 140px;
}

.app-phone {
    border-radius: 34px;
    overflow: hidden;
    border: 10px solid #0f172a;
    box-shadow: 0 24px 50px rgba(15, 23, 42, 0.24);
}

.mock-screen {
    background: var(--cf-gradient);
    min-height: 500px;
    padding: 24px;
}

.mock-chip {
    width: 58px;
    height: 42px;
    border-radius: 12px;
    background: rgba(255,255,255,0.25);
}

.btn-close { filter: var(--cf-text); }

@media (max-width: 768px) {
    .page-shell { padding-inline: 14px; padding-bottom: 120px; }
    .auth-card { padding: 24px; }
    .balance-amount { font-size: 1.8rem; }
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--cf-muted);
    border-radius: 4px;
}

::selection {
    background: var(--cf-primary);
    color: #fff;
}