/* DiaryBot Admin Panel — CSS (Iteration 2)
 *
 * Minimal, clean design. No external frameworks.
 * Uses CSS custom properties for easy theming.
 */

/* ── Variables ──────────────────────────────────────────────────────────── */

:root {
    --color-bg: #f5f6fa;
    --color-surface: #ffffff;
    --color-primary: #4a6cf7;
    --color-primary-hover: #3b5de7;
    --color-text: #2d3436;
    --color-text-muted: #636e72;
    --color-border: #dfe6e9;
    --color-error: #d63031;
    --color-error-bg: #ffeaea;
    --color-success: #00b894;
    --color-success-bg: #e6fff9;
    --color-warn: #e17055;
    --color-warn-bg: #fff3e0;
    --color-header-bg: #2d3436;
    --color-header-text: #ffffff;
    --color-nav-hover: rgba(255, 255, 255, 0.1);
    --color-nav-active: rgba(255, 255, 255, 0.15);

    --radius: 8px;
    --radius-sm: 4px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);

    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Fira Mono", Consolas, monospace;
}

/* ── Reset ──────────────────────────────────────────────────────────────── */

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

body {
    font-family: var(--font-sans);
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    min-height: 100vh;
}

a {
    color: var(--color-primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* ── Header ─────────────────────────────────────────────────────────────── */

.admin-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-header-bg);
    color: var(--color-header-text);
    padding: 0 24px;
    height: 56px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.header-left {
    display: flex;
    align-items: center;
    gap: 32px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: -0.3px;
    white-space: nowrap;
}

/* ── Navigation tabs ────────────────────────────────────────────────────── */

.nav-tabs {
    display: flex;
    gap: 4px;
}

.nav-tab {
    color: rgba(255, 255, 255, 0.7);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    transition: background 0.15s, color 0.15s;
    text-decoration: none;
}

.nav-tab:hover {
    background: var(--color-nav-hover);
    color: var(--color-header-text);
    text-decoration: none;
}

.nav-tab.active {
    background: var(--color-nav-active);
    color: var(--color-header-text);
}

/* ── User info & logout ─────────────────────────────────────────────────── */

.user-info {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
}

.inline-form {
    display: inline;
}

.btn-logout {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: rgba(255, 255, 255, 0.8);
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
}

.btn-logout:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
}

/* ── Main content ───────────────────────────────────────────────────────── */

.content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 32px 24px;
}

/* ── Page header ────────────────────────────────────────────────────────── */

.page-header {
    margin-bottom: 32px;
}

.page-header-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.btn-refresh {
    flex-shrink: 0;
    margin-top: 2px;
}

.btn-refresh:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.page-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 4px;
}

.page-description {
    font-size: 14px;
    color: var(--color-text-muted);
}

/* ── Cards ──────────────────────────────────────────────────────────────── */

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}

.card-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
}

.card-placeholder {
    font-size: 13px;
    color: var(--color-text-muted);
    font-style: italic;
    padding: 16px;
    background: var(--color-bg);
    border-radius: var(--radius-sm);
    border: 1px dashed var(--color-border);
}

.table-card {
    padding: 16px;
}

/* ── Metrics ────────────────────────────────────────────────────────────── */

.metric-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 16px;
}

.metric {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.metric-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
}

.metric-label {
    font-size: 12px;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.metric-success {
    color: var(--color-success);
}

.metric-error {
    color: var(--color-error);
}

.metric-warn {
    color: var(--color-warn);
}

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

/* ── Data Tables ────────────────────────────────────────────────────────── */

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

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.data-table th {
    text-align: left;
    padding: 10px 12px;
    background: var(--color-bg);
    border-bottom: 2px solid var(--color-border);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.data-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--color-border);
    vertical-align: middle;
}

.data-table tbody tr:hover {
    background: rgba(74, 108, 247, 0.03);
}

.data-table .mono {
    font-family: var(--font-mono);
    font-size: 12px;
}

.data-table .nowrap {
    white-space: nowrap;
}

.data-table .text-muted {
    color: var(--color-text-muted);
}

.data-table .username {
    color: var(--color-primary);
    font-weight: 500;
}

.data-table .error-text {
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 12px;
    color: var(--color-text-muted);
}

.data-table .empty-state {
    text-align: center;
    padding: 32px 16px;
    color: var(--color-text-muted);
    font-style: italic;
}

.empty-state-inline {
    text-align: center;
    padding: 24px 16px;
    color: var(--color-text-muted);
    font-style: italic;
    font-size: 13px;
}

/* ── Badges ─────────────────────────────────────────────────────────────── */

.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

.badge-success {
    background: var(--color-success-bg);
    color: var(--color-success);
    border: 1px solid rgba(0, 184, 148, 0.2);
}

.badge-error {
    background: var(--color-error-bg);
    color: var(--color-error);
    border: 1px solid rgba(214, 48, 49, 0.2);
}

.badge-muted {
    background: var(--color-bg);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}

/* ── Action Buttons ─────────────────────────────────────────────────────── */

.actions-cell {
    white-space: nowrap;
    display: flex;
    gap: 6px;
    align-items: center;
}

.btn-sm {
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    cursor: pointer;
    transition: background 0.15s, border-color 0.15s;
    white-space: nowrap;
    font-family: var(--font-sans);
}

.btn-approve {
    background: var(--color-success-bg);
    color: var(--color-success);
    border-color: rgba(0, 184, 148, 0.3);
}

.btn-approve:hover {
    background: var(--color-success);
    color: #fff;
}

.btn-block-user {
    background: var(--color-error-bg);
    color: var(--color-error);
    border-color: rgba(214, 48, 49, 0.3);
}

.btn-block-user:hover {
    background: var(--color-error);
    color: #fff;
}

.btn-reset {
    background: var(--color-bg);
    color: var(--color-text-muted);
    border-color: var(--color-border);
}

.btn-reset:hover {
    background: var(--color-border);
    color: var(--color-text);
}

/* ── Search form ────────────────────────────────────────────────────────── */

.search-form {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.search-row {
    display: flex;
    gap: 8px;
    align-items: center;
}

.search-input {
    flex: 1;
    padding: 8px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: var(--font-sans);
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.search-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.15);
}

/* ── Range filter ───────────────────────────────────────────────────────── */

.range-filter {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
}

.range-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text-muted);
}

/* ── Footer ─────────────────────────────────────────────────────────────── */

.admin-footer {
    text-align: center;
    padding: 24px;
    color: var(--color-text-muted);
    font-size: 12px;
}

/* ── Login page ─────────────────────────────────────────────────────────── */

.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #2d3436 0%, #4a6cf7 100%);
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 16px;
}

.login-card {
    background: var(--color-surface);
    border-radius: var(--radius);
    padding: 40px 32px;
    box-shadow: var(--shadow-md);
}

.login-title {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    color: var(--color-text);
    margin-bottom: 4px;
}

.login-subtitle {
    font-size: 14px;
    color: var(--color-text-muted);
    text-align: center;
    margin-bottom: 32px;
}

/* ── Forms ──────────────────────────────────────────────────────────────── */

.login-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
}

.form-group input {
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: var(--font-sans);
    transition: border-color 0.15s, box-shadow 0.15s;
    outline: none;
}

.form-group input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.15);
}

/* ── Buttons ────────────────────────────────────────────────────────────── */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
    text-decoration: none;
}

.btn:hover {
    text-decoration: none;
}

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

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

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

.btn-secondary {
    background: var(--color-bg);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-border);
}

.btn-block {
    width: 100%;
}

/* ── Alerts ─────────────────────────────────────────────────────────────── */

.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: 16px;
}

.alert-error {
    background: var(--color-error-bg);
    color: var(--color-error);
    border: 1px solid rgba(214, 48, 49, 0.2);
}

.alert-success {
    background: var(--color-success-bg);
    color: #0a6847;
    border: 1px solid rgba(0, 184, 148, 0.2);
}

/* ── Danger button ──────────────────────────────────────────────────────── */

.btn-danger {
    background: var(--color-error);
    color: #fff;
    border: 1px solid var(--color-error);
}

.btn-danger:hover {
    background: #b71c1c;
    border-color: #b71c1c;
}

/* ── Form helpers ───────────────────────────────────────────────────────── */

.form-row {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
}

.form-row .form-group {
    flex: 1;
}

.settings-form .form-group {
    margin-bottom: 16px;
}

.settings-form input[type="text"],
.settings-form input[type="email"],
.settings-form input[type="password"] {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: var(--font-sans);
    width: 100%;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.settings-form input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(74, 108, 247, 0.15);
}

.form-error {
    color: var(--color-error);
    font-size: 13px;
    font-weight: 500;
}

.label-danger {
    color: var(--color-error);
    font-weight: 600;
}

.text-muted-block {
    color: var(--color-text-muted);
    font-size: 13px;
}

/* ── User card info ─────────────────────────────────────────────────────── */

.user-card-info {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 24px;
    font-size: 14px;
    line-height: 1.8;
}

/* ── Checkbox grid ──────────────────────────────────────────────────────── */

.checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 8px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--color-primary);
}

/* ── Delete form ────────────────────────────────────────────────────────── */

.delete-form input[type="text"] {
    padding: 8px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-family: var(--font-sans);
    width: 100%;
    outline: none;
    transition: border-color 0.15s, box-shadow 0.15s;
}

.delete-form input[type="text"]:focus {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(214, 48, 49, 0.15);
}

/* ── App mode toggle ────────────────────────────────────────────────────── */

.mode-toggle {
    display: flex;
    gap: 8px;
}

.mode-option {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: border-color 0.15s, background 0.15s;
    font-size: 14px;
    font-weight: 500;
}

.mode-option:hover {
    border-color: var(--color-primary);
    background: rgba(74, 108, 247, 0.04);
}

.mode-option-active {
    border-color: var(--color-primary);
    background: rgba(74, 108, 247, 0.08);
}

.mode-option input[type="radio"] {
    accent-color: var(--color-primary);
    width: 16px;
    height: 16px;
}

.mode-label {
    user-select: none;
}

.badge-warn {
    background: var(--color-warn-bg);
    color: var(--color-warn);
    border: 1px solid rgba(225, 112, 85, 0.2);
}

/* ── Settings inline status messages ───────────────────────────────────── */

.settings-status {
    margin-top: 10px;
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
}

.settings-status-success {
    background: var(--color-success-bg);
    color: #0a6847;
    border: 1px solid rgba(0, 184, 148, 0.2);
}

.settings-status-error {
    background: var(--color-error-bg);
    color: var(--color-error);
    border: 1px solid rgba(214, 48, 49, 0.2);
}

.settings-status-info {
    background: var(--color-bg);
    color: var(--color-text-muted);
    border: 1px solid var(--color-border);
}

/* ── Responsive ─────────────────────────────────────────────────────────── */

@media (max-width: 768px) {
    .admin-header {
        flex-direction: column;
        height: auto;
        padding: 12px 16px;
        gap: 8px;
    }

    .header-left {
        flex-direction: column;
        gap: 8px;
        width: 100%;
    }

    .nav-tabs {
        flex-wrap: wrap;
    }

    .content {
        padding: 20px 16px;
    }

    .card-grid {
        grid-template-columns: 1fr;
    }

    .search-row {
        flex-direction: column;
    }

    .search-input {
        width: 100%;
    }

    .actions-cell {
        flex-direction: column;
        gap: 4px;
    }

    .metric-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}