:root {
    --ink: #10243a;
    --ink-soft: #3d5368;
    --mist: #eef5f7;
    --milk: #f4f8f9;
    --foam: #d7ebe8;
    --teal: #0f766e;
    --teal-deep: #0a5c56;
    --teal-soft: rgba(15, 118, 110, 0.1);
    --line: rgba(16, 36, 58, 0.1);
    --white: #ffffff;
    --danger: #b42318;
    --danger-soft: #fef3f2;
    --success: #027a48;
    --success-soft: #ecfdf3;
    --warn: #b54708;
    --shadow: 0 12px 40px rgba(16, 36, 58, 0.08);
    --sidebar: 248px;
    --font-display: "Fraunces", Georgia, serif;
    --font-body: "Outfit", sans-serif;
    --radius: 14px;
}

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

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    color: var(--ink);
    background:
        radial-gradient(ellipse 80% 50% at 0% 0%, rgba(15, 118, 110, 0.07), transparent 55%),
        radial-gradient(ellipse 60% 40% at 100% 0%, rgba(16, 36, 58, 0.04), transparent 50%),
        var(--milk);
    line-height: 1.5;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

button, input, select, textarea {
    font: inherit;
    color: inherit;
}

/* —— Login —— */
.auth-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 2rem 1.25rem;
    background:
        linear-gradient(160deg, rgba(10, 28, 42, 0.88), rgba(15, 118, 110, 0.72)),
        url("https://images.unsplash.com/photo-1550583724-b2692b85b150?auto=format&fit=crop&w=1800&q=70") center / cover;
}

.auth-card {
    width: min(420px, 100%);
    background: var(--white);
    border-radius: 20px;
    padding: 2.25rem 2rem;
    box-shadow: var(--shadow);
    animation: rise 0.45s ease both;
}

.auth-brand {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--teal-deep);
    margin-bottom: 0.35rem;
}

.auth-sub {
    color: var(--ink-soft);
    font-size: 0.95rem;
    margin-bottom: 1.75rem;
}

.auth-footer {
    margin-top: 1.5rem;
    text-align: center;
    font-size: 0.88rem;
    color: var(--ink-soft);
}

.auth-footer a {
    color: var(--teal);
    font-weight: 600;
}

/* —— Shell —— */
.admin-shell {
    display: grid;
    grid-template-columns: var(--sidebar) 1fr;
    min-height: 100vh;
}

.sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    background: linear-gradient(185deg, #0d3d3a 0%, #0a2f2c 55%, #082422 100%);
    color: rgba(255, 255, 255, 0.88);
    padding: 1.5rem 1rem 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    overflow-y: auto;
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.35rem 0.65rem;
}

.brand-mark {
    width: 38px;
    height: 38px;
    border-radius: 11px;
    background: linear-gradient(145deg, #14b8a6, #0f766e);
    display: grid;
    place-items: center;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.05rem;
    color: white;
    flex-shrink: 0;
}

.brand-text {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: white;
    line-height: 1.15;
}

.brand-text small {
    display: block;
    font-family: var(--font-body);
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 0.15rem;
}

.nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    flex: 1;
}

.nav-item a {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.7rem 0.85rem;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.72);
    transition: background 0.2s ease, color 0.2s ease;
}

.nav-item a:hover {
    background: rgba(255, 255, 255, 0.08);
    color: white;
}

.nav-item a.active {
    background: rgba(255, 255, 255, 0.14);
    color: white;
}

.nav-icon {
    width: 18px;
    height: 18px;
    opacity: 0.9;
    flex-shrink: 0;
}

.sidebar-user {
    padding: 0.85rem;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.sidebar-user .name {
    font-weight: 600;
    font-size: 0.92rem;
    color: white;
}

.sidebar-user .meta {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 0.15rem;
    word-break: break-all;
}

.main {
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.topbar {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 0.85rem;
    padding: 1.35rem 1.75rem 0.5rem;
    flex-wrap: wrap;
}

.topbar-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-left: auto;
}

.page-title {
    min-width: 0;
}

.page-title h1 {
    font-family: var(--font-display);
    font-size: clamp(1.3rem, 2.4vw, 1.65rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    word-break: break-word;
}

.page-title p {
    color: var(--ink-soft);
    font-size: 0.92rem;
    margin-top: 0.2rem;
}

.content {
    padding: 1rem 1.75rem 2rem;
    animation: rise 0.35s ease both;
}

@keyframes rise {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: none; }
}

/* —— Components —— */
.flash {
    padding: 0.85rem 1rem;
    border-radius: 10px;
    margin-bottom: 1.15rem;
    font-size: 0.92rem;
    font-weight: 500;
}

.flash-success {
    background: var(--success-soft);
    color: var(--success);
}

.flash-error {
    background: var(--danger-soft);
    color: var(--danger);
}

.stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 1.15rem 1.2rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.stat-label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--ink-soft);
}

.stat-value {
    font-family: var(--font-display);
    font-size: 1.85rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-top: 0.35rem;
    color: var(--ink);
}

.stat-value.teal { color: var(--teal); }

.panel {
    background: var(--white);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
}

.panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--line);
}

.panel-head h2 {
    font-size: 1.05rem;
    font-weight: 600;
}

.panel-body {
    padding: 1.25rem;
}

.toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
    align-items: flex-end;
    margin-bottom: 1.15rem;
}

.toolbar .field {
    flex: 1;
    min-width: 140px;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.field label {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--ink-soft);
}

.field input,
.field select,
.field textarea {
    width: 100%;
    padding: 0.7rem 0.85rem;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--white);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
    outline: none;
    border-color: var(--teal);
    box-shadow: 0 0 0 3px var(--teal-soft);
}

.field textarea {
    min-height: 90px;
    resize: vertical;
}

.field .error {
    font-size: 0.8rem;
    color: var(--danger);
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-grid .full {
    grid-column: 1 / -1;
}

.form-actions {
    display: flex;
    gap: 0.65rem;
    flex-wrap: wrap;
    margin-top: 1.25rem;
    padding-top: 1.15rem;
    border-top: 1px solid var(--line);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
    padding: 0.65rem 1.1rem;
    border-radius: 10px;
    border: 1px solid transparent;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: background 0.2s ease, transform 0.15s ease, border-color 0.2s ease;
    white-space: nowrap;
}

.btn:active { transform: scale(0.98); }

.btn-primary {
    background: var(--teal);
    color: white;
}

.btn-primary:hover { background: var(--teal-deep); }

.btn-ghost {
    background: transparent;
    border-color: var(--line);
    color: var(--ink);
}

.btn-ghost:hover { background: var(--mist); }

.btn-danger {
    background: var(--danger-soft);
    color: var(--danger);
    border-color: transparent;
}

.btn-danger:hover { background: #fee4e2; }

.btn-sm {
    padding: 0.4rem 0.75rem;
    font-size: 0.82rem;
}

.table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

table.data {
    width: 100%;
    min-width: 640px;
    border-collapse: collapse;
    font-size: 0.92rem;
}

table.data th {
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--ink-soft);
    padding: 0.75rem 1.15rem;
    border-bottom: 1px solid var(--line);
    background: rgba(238, 245, 247, 0.55);
    white-space: nowrap;
}

table.data td {
    padding: 0.9rem 1.15rem;
    border-bottom: 1px solid var(--line);
    vertical-align: middle;
}

table.data tr:last-child td { border-bottom: none; }

table.data tbody tr {
    transition: background 0.15s ease;
}

table.data tbody tr:hover { background: rgba(15, 118, 110, 0.03); }

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.55rem;
    border-radius: 6px;
    font-size: 0.78rem;
    font-weight: 600;
    background: var(--teal-soft);
    color: var(--teal-deep);
}

.num {
    font-variant-numeric: tabular-nums;
    font-weight: 600;
}

.muted { color: var(--ink-soft); }
.danger-text { color: var(--danger); }
.success-text { color: var(--success); }

.actions {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
}

.empty {
    text-align: center;
    padding: 2.5rem 1.5rem;
    color: var(--ink-soft);
}

.empty strong {
    display: block;
    color: var(--ink);
    font-size: 1.05rem;
    margin-bottom: 0.35rem;
}

.pagination {
    display: flex;
    justify-content: flex-end;
    padding: 1rem 1.15rem;
    border-top: 1px solid var(--line);
}

.pagination nav > div {
    display: flex;
    gap: 0.35rem;
    flex-wrap: wrap;
}

.report-group {
    border-bottom: 1px solid var(--line);
}

.report-group:last-child { border-bottom: none; }

.report-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    flex-wrap: wrap;
    padding: 1rem 1.25rem;
    background: rgba(238, 245, 247, 0.45);
    cursor: pointer;
    user-select: none;
}

.report-head:hover { background: rgba(15, 118, 110, 0.06); }

.report-date {
    font-weight: 600;
    font-size: 0.98rem;
}

.report-meta {
    display: flex;
    gap: 1.25rem;
    flex-wrap: wrap;
    font-size: 0.88rem;
    color: var(--ink-soft);
}

.report-meta strong {
    color: var(--ink);
    font-weight: 600;
}

.report-body { display: none; }

.report-group.open .report-body { display: block; }

.settings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.menu-toggle {
    display: none;
    border: 1px solid var(--line);
    background: var(--white);
    border-radius: 10px;
    padding: 0.55rem 0.7rem;
    cursor: pointer;
    flex-shrink: 0;
    align-items: center;
    justify-content: center;
}

.overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(16, 36, 58, 0.4);
    z-index: 40;
}

body.sidebar-open {
    overflow: hidden;
}

@media (max-width: 1100px) {
    .stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
    .admin-shell { grid-template-columns: 1fr; }

    .sidebar {
        position: fixed;
        inset: 0 auto 0 0;
        width: min(var(--sidebar), 86vw);
        z-index: 50;
        transform: translateX(-105%);
        transition: transform 0.25s ease;
        box-shadow: 8px 0 30px rgba(0, 0, 0, 0.18);
    }

    .sidebar.open { transform: none; }

    .overlay.open { display: block; }

    .menu-toggle { display: inline-flex; }

    .form-grid,
    .settings-grid { grid-template-columns: 1fr; }

    .topbar,
    .content {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .toolbar {
        align-items: stretch;
    }

    .toolbar .field {
        flex: 1 1 100%;
        min-width: 0;
    }

    .toolbar .btn {
        width: 100%;
    }

    .panel-head {
        padding: 0.9rem 1rem;
    }

    .panel-body {
        padding: 1rem;
    }

    table.data th,
    table.data td {
        padding: 0.75rem 0.85rem;
    }

    .report-head {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.65rem;
    }

    .report-meta {
        gap: 0.85rem;
    }

    .pagination {
        justify-content: center;
    }
}

@media (max-width: 560px) {
    .stats {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .stat {
        padding: 1rem;
    }

    .stat-value {
        font-size: 1.55rem;
    }

    .auth-page {
        padding: 1.25rem 1rem;
    }

    .auth-card {
        padding: 1.5rem 1.15rem;
        border-radius: 16px;
    }

    .topbar {
        padding-top: 1rem;
        gap: 0.75rem;
    }

    .topbar-actions {
        width: 100%;
        margin-left: 0;
    }

    .topbar-actions .btn {
        width: 100%;
    }

    .content {
        padding-bottom: 1.5rem;
    }

    .form-actions .btn {
        width: 100%;
    }

    .actions {
        flex-direction: column;
    }

    .actions .btn,
    .actions form {
        width: 100%;
    }

    .actions form .btn {
        width: 100%;
    }

    table.data {
        min-width: 560px;
        font-size: 0.85rem;
    }

    .empty {
        padding: 2rem 1rem;
    }
}