/* ── Variables ── */
:root {
    --ou-green: #00694e;
    --ou-green-dark: #004d39;
    --ou-green-light: #e6f2ee;
    --text-primary: #1a1a1a;
    --text-secondary: #555;
    --bg-page: #f5f6f8;
    --bg-card: #fff;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
    --radius: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-primary);
    background: var(--bg-page);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

a:hover {
    text-decoration: underline;
}

/* ── Header ── */
.site-header {
    background: var(--ou-green);
    color: #fff;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.header-brand h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0;
}

.header-brand h1 a {
    color: #fff;
    text-decoration: none;
}

.header-subtitle {
    font-size: 0.85rem;
    opacity: 0.85;
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.9rem;
}

.header-nav a {
    color: #fff;
    opacity: 0.9;
}

.header-nav a:hover {
    opacity: 1;
    text-decoration: underline;
}

.header-nav .nav-sep {
    opacity: 0.4;
}

.logout-form {
    display: inline;
}

.logout-form button {
    background: none;
    border: none;
    color: #fff;
    opacity: 0.9;
    font: inherit;
    cursor: pointer;
    padding: 0;
}

.logout-form button:hover {
    opacity: 1;
    text-decoration: underline;
}

/* ── Main ── */
main {
    flex: 1;
    padding: 2rem;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
}

/* ── Page heading ── */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.page-header h2 {
    font-size: 1.4rem;
    font-weight: 700;
    margin: 0;
}

/* ── Flash messages ── */
.flash-msg {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.flash-msg.error {
    background: #fef2f2;
    border: 1px solid #fca5a5;
    color: #991b1b;
}

.flash-msg.success {
    background: #f0fdf4;
    border: 1px solid #86efac;
    color: #166534;
}

.flash-msg.info, .flash-msg.warning {
    background: #fffbeb;
    border: 1px solid #fcd34d;
    color: #92400e;
}

/* ── RC List ── */
.rc-list {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.rc-row {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.25rem;
    border-bottom: 1px solid #f3f4f6;
    gap: 1rem;
}

.rc-row:last-child {
    border-bottom: none;
}

.rc-header {
    background: #f9fafb;
    border-bottom: 2px solid #e5e7eb;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    padding: 0.6rem 1.25rem;
}

.rc-col-label {
    display: inline-block;
    min-width: 44px;
    text-align: center;
}

.rc-row.loading {
    opacity: 0.5;
    pointer-events: none;
}

.rc-status {
    flex-shrink: 0;
}

.rc-indicator {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #9ca3af;
}

.rc-indicator-on {
    background: #16a34a;
    box-shadow: 0 0 6px rgba(22, 163, 74, 0.4);
}

.rc-indicator-off {
    background: #dc2626;
}

.rc-indicator-suspended, .rc-indicator-unknown {
    background: #d97706;
}

.rc-name {
    flex: 1;
    font-weight: 500;
    font-size: 0.95rem;
}

.rc-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-shrink: 0;
}

/* ── Power Toggle Switch ── */
.power-toggle {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
    cursor: pointer;
}

.power-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    inset: 0;
    background: #dc2626;
    border-radius: 24px;
    transition: background 0.25s;
}

.toggle-slider::before {
    content: "";
    position: absolute;
    width: 18px;
    height: 18px;
    left: 3px;
    bottom: 3px;
    background: #fff;
    border-radius: 50%;
    transition: transform 0.25s;
}

input:checked + .toggle-slider {
    background: #16a34a;
}

input:checked + .toggle-slider::before {
    transform: translateX(20px);
}

/* ── Badges ── */
.badge {
    display: inline-block;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-on {
    background: #dcfce7;
    color: #166534;
}

.badge-off {
    background: #fee2e2;
    color: #991b1b;
}

.badge-suspended, .badge-unknown {
    background: #fef3c7;
    color: #92400e;
}

.badge-admin {
    background: var(--ou-green-light);
    color: var(--ou-green-dark);
}

.badge-user {
    background: #f3f4f6;
    color: var(--text-secondary);
}

.badge-active {
    background: #dcfce7;
    color: #166534;
}

.badge-inactive {
    background: #fee2e2;
    color: #991b1b;
}

/* ── Buttons ── */
.btn {
    display: inline-block;
    padding: 0.45rem 0.9rem;
    border: none;
    border-radius: var(--radius);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s, opacity 0.15s;
    line-height: 1.4;
}

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

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

.btn-primary:hover {
    background: var(--ou-green-dark);
    color: #fff;
}

.btn-success {
    background: #16a34a;
    color: #fff;
}

.btn-success:hover {
    background: #15803d;
    color: #fff;
}

.btn-danger {
    background: #dc2626;
    color: #fff;
}

.btn-danger:hover {
    background: #b91c1c;
    color: #fff;
}

.btn-warning {
    background: #d97706;
    color: #fff;
}

.btn-warning:hover {
    background: #b45309;
    color: #fff;
}

.btn-outline {
    background: transparent;
    border: 1px solid #d1d5db;
    color: var(--text-primary);
}

.btn-outline:hover {
    background: #f3f4f6;
    color: var(--text-primary);
}

.btn-sm {
    padding: 0.3rem 0.65rem;
    font-size: 0.8rem;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.btn-group {
    display: flex;
    gap: 0.5rem;
    flex: 1;
}

.btn-group .btn {
    flex: 1;
    text-align: center;
}

/* ── Tables ── */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.data-table th {
    background: #f9fafb;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 2px solid #e5e7eb;
}

.data-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid #f3f4f6;
    font-size: 0.9rem;
}

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

.data-table code {
    background: #f3f4f6;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-size: 0.82rem;
}

/* ── Cards (detail pages) ── */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 1.5rem;
}

.card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header {
    padding: 0.75rem 1.25rem;
    background: #f9fafb;
    font-weight: 600;
    font-size: 0.9rem;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-body {
    padding: 1.25rem;
}

.card-body p {
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.card-body p:last-child {
    margin-bottom: 0;
}

.card-body strong {
    color: var(--text-secondary);
    font-weight: 600;
}

/* ── Lists in cards ── */
.item-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.item-list li {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.6rem 0;
    border-bottom: 1px solid #f3f4f6;
    font-size: 0.9rem;
}

.item-list li:last-child {
    border-bottom: none;
}

/* ── Login ── */
.login-container {
    max-width: 400px;
    margin: 3rem auto;
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
}

.login-container h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--ou-green);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.35rem;
    font-size: 0.9rem;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: var(--radius);
    font-size: 1rem;
    transition: border-color 0.15s;
    font-family: inherit;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--ou-green);
    box-shadow: 0 0 0 3px rgba(0, 105, 78, 0.15);
}

.form-error {
    color: #991b1b;
    font-size: 0.82rem;
    margin-top: 0.25rem;
}

.btn-login {
    width: 100%;
    padding: 0.7rem;
    background: var(--ou-green);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s;
}

.btn-login:hover {
    background: var(--ou-green-dark);
}

/* ── Modals ── */
.modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
}

.modal-backdrop.active {
    display: flex;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    width: 100%;
    max-width: 480px;
    max-height: 85vh;
    overflow-y: auto;
}

.modal-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0;
    line-height: 1;
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid #e5e7eb;
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

/* ── Checkboxes in modals ── */
.check-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0;
    font-size: 0.9rem;
}

.check-item input[type="checkbox"] {
    accent-color: var(--ou-green);
}

/* ── Empty states ── */
.empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: 3rem 1rem;
    font-size: 0.95rem;
}

/* ── Stats row (admin dashboard) ── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    padding: 1.5rem;
    text-align: center;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--ou-green);
}

.stat-card .stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* ── Spinner ── */
.spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ── Snapshot Slide-out Panel ── */
.snap-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 200;
    display: none;
}

.snap-overlay.active {
    display: block;
}

.snap-panel {
    position: fixed;
    top: 0;
    right: -420px;
    width: 400px;
    max-width: 90vw;
    height: 100vh;
    background: var(--bg-card);
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    z-index: 201;
    display: flex;
    flex-direction: column;
    transition: right 0.25s ease;
}

.snap-panel.active {
    right: 0;
}

.snap-panel-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.snap-panel-header h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.snap-panel-body {
    flex: 1;
    overflow-y: auto;
    padding: 0;
}

.snap-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    border-bottom: 1px solid #f3f4f6;
    gap: 0.75rem;
}

.snap-item:last-child {
    border-bottom: none;
}

.snap-info {
    flex: 1;
    min-width: 0;
}

.snap-name {
    font-weight: 500;
    font-size: 0.9rem;
}

.snap-name .snap-current {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--ou-green);
    text-transform: uppercase;
    margin-left: 0.4rem;
}

.snap-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.15rem;
}

.snap-date {
    font-size: 0.75rem;
    color: #9ca3af;
    margin-top: 0.15rem;
}

.snap-indent {
    padding-left: 1rem;
}

/* ── Ducky Overlay ── */
.ducky-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 300;
}

.ducky-overlay.active {
    display: flex;
}

.ducky-overlay img {
    max-width: 90vw;
    max-height: 85vh;
    object-fit: contain;
}

.ducky-close {
    position: fixed;
    top: 1rem;
    right: 1.5rem;
    background: none;
    border: none;
    color: #fff;
    font-size: 2.5rem;
    cursor: pointer;
    line-height: 1;
    z-index: 301;
}

.ducky-close:hover {
    opacity: 0.7;
}

/* ── Footer ── */
.site-footer {
    text-align: center;
    padding: 1.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
    border-top: 1px solid #e5e7eb;
}

/* ── Mobile Responsive ── */
@media (max-width: 640px) {
    .site-header {
        padding: 0.75rem 1rem;
    }

    .header-brand h1 {
        font-size: 1.2rem;
    }

    .header-nav {
        font-size: 0.8rem;
        gap: 0.5rem;
        flex-wrap: wrap;
    }

    main {
        padding: 1rem;
    }

    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .rc-row {
        padding: 0.6rem 0.75rem;
        gap: 0.5rem;
    }

    .rc-header {
        display: none;
    }

    .rc-name {
        font-size: 0.85rem;
        min-width: 0;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .rc-controls {
        gap: 0.5rem;
    }

    .btn-sm {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
    }

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

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

    .data-table {
        font-size: 0.82rem;
    }

    .data-table th, .data-table td {
        padding: 0.5rem 0.6rem;
    }

    .snap-panel {
        width: 100vw;
        max-width: 100vw;
        right: -100vw;
    }

    .login-container {
        margin: 1.5rem auto;
        padding: 1.5rem;
    }

    .modal {
        max-width: 95vw;
    }
}