:root {
    --ink: #172033;
    --muted: #667085;
    --line: rgba(255, 255, 255, .45);
    --glass: rgba(255, 255, 255, .62);
    --glass-strong: rgba(255, 255, 255, .78);
    --accent: #0f766e;
    --accent-2: #2563eb;
    --danger: #dc2626;
    --warning: #b45309;
}

* { box-sizing: border-box; }

body {
    min-height: 100vh;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(45, 212, 191, .28), transparent 34rem),
        radial-gradient(circle at 90% 10%, rgba(59, 130, 246, .20), transparent 31rem),
        linear-gradient(135deg, #eef8f6 0%, #f7fbff 48%, #f6f4ee 100%);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    overflow-x: hidden;
}

.app-shell {
    display: grid;
    grid-template-columns: 280px minmax(0, 1fr);
    min-height: 100vh;
}

.glass-sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 24px;
    background: rgba(255, 255, 255, .48);
    border-right: 1px solid var(--line);
    backdrop-filter: blur(24px);
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 8px 28px;
    color: var(--ink);
    text-decoration: none;
}

.brand-mark {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    color: #fff;
    background: linear-gradient(145deg, var(--accent), var(--accent-2));
    box-shadow: 0 18px 36px rgba(15, 118, 110, .22);
}

.brand small {
    display: block;
    color: var(--muted);
    font-size: .78rem;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #344054;
    border-radius: 8px;
    padding: 12px 14px;
    transition: transform .2s ease, background .2s ease, color .2s ease;
}

.nav-link:hover {
    color: var(--accent);
    background: rgba(255, 255, 255, .72);
    transform: translateX(4px);
}

.content-area {
    padding: 28px;
}

.hero-panel, .glass-panel, .stat-card, .auth-card, .table-wrap {
    background: var(--glass);
    border: 1px solid var(--line);
    box-shadow: 0 24px 70px rgba(31, 41, 55, .10);
    backdrop-filter: blur(22px);
    border-radius: 18px;
}

.hero-panel {
    padding: 28px;
    animation: breathe 5s ease-in-out infinite;
}

.glass-panel, .auth-card {
    padding: 24px;
}

.stat-card {
    padding: 20px;
    min-height: 132px;
    transition: transform .2s ease, box-shadow .2s ease;
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 30px 80px rgba(31, 41, 55, .14);
}

.stat-icon {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border-radius: 12px;
    color: #fff;
    background: linear-gradient(145deg, var(--accent), var(--accent-2));
}

.muted { color: var(--muted); }

.btn-primary {
    --bs-btn-bg: var(--accent);
    --bs-btn-border-color: var(--accent);
    --bs-btn-hover-bg: #115e59;
    --bs-btn-hover-border-color: #115e59;
    border-radius: 8px;
}

.btn-outline-primary {
    --bs-btn-color: var(--accent);
    --bs-btn-border-color: rgba(15, 118, 110, .35);
    --bs-btn-hover-bg: var(--accent);
    --bs-btn-hover-border-color: var(--accent);
    border-radius: 8px;
}

.form-control, .form-select {
    border-color: rgba(15, 23, 42, .12);
    border-radius: 8px;
    background: rgba(255, 255, 255, .70);
}

.table-wrap {
    overflow: hidden;
}

.table {
    margin: 0;
    --bs-table-bg: transparent;
}

.table thead th {
    color: #475467;
    font-size: .78rem;
    letter-spacing: 0;
    text-transform: uppercase;
    background: rgba(255, 255, 255, .52);
}

.toast-card {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
    padding: 13px 16px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: var(--glass-strong);
    backdrop-filter: blur(18px);
    box-shadow: 0 16px 44px rgba(31, 41, 55, .10);
}

.toast-card.success { color: var(--accent); }
.toast-card.error { color: var(--danger); }
.toast-card.warning { color: var(--warning); }

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

.auth-card {
    width: min(100%, 440px);
}

.code-box {
    display: block;
    padding: 14px;
    border-radius: 10px;
    background: rgba(15, 23, 42, .88);
    color: #e6fffb;
    overflow-x: auto;
}

@keyframes breathe {
    0%, 100% { box-shadow: 0 24px 70px rgba(31, 41, 55, .10); }
    50% { box-shadow: 0 30px 86px rgba(15, 118, 110, .15); }
}

@media (max-width: 900px) {
    .app-shell { grid-template-columns: 1fr; }
    .glass-sidebar {
        position: relative;
        height: auto;
        border-right: 0;
        border-bottom: 1px solid var(--line);
    }
    .content-area { padding: 18px; }
}