/* ============================================================
   ndigital CMS — Vercel-inspired design system
   Light & Dark mode via [data-theme="dark"] on <html>
   ============================================================ */

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

:root {
    --bg: #fafafa;
    --surface: #fff;
    --surface-hover: #f5f5f5;
    --text: #171717;
    --text-secondary: #666;
    --text-tertiary: #999;
    --border: #eaeaea;
    --border-hover: #ccc;
    --accent: #0070f3;
    --accent-hover: #005cc5;
    --accent-light: rgba(0,112,243,0.08);
    --danger: #e00;
    --danger-hover: #c00;
    --danger-light: rgba(238,0,0,0.06);
    --success: #0070f3;
    --success-bg: rgba(0,112,243,0.06);
    --radius: 8px;
    --radius-sm: 6px;
    --radius-lg: 12px;
    --shadow: 0 2px 4px rgba(0,0,0,0.04);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --transition: 150ms ease;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    --font-mono: 'SFMono-Regular', Menlo, Consolas, monospace;
    --nav-height: 48px;
}

[data-theme="dark"] {
    --bg: #000;
    --surface: #111;
    --surface-hover: #1a1a1a;
    --text: #ededed;
    --text-secondary: #888;
    --text-tertiary: #555;
    --border: #333;
    --border-hover: #555;
    --accent: #0070f3;
    --accent-hover: #3291ff;
    --accent-light: rgba(0,112,243,0.12);
    --danger: #ff4444;
    --danger-hover: #ff6666;
    --danger-light: rgba(255,68,68,0.1);
    --success: #0070f3;
    --success-bg: rgba(0,112,243,0.1);
    --shadow: none;
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.6);
}

/* === Base === */
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* === Navigation === */
.nav {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--nav-height);
}

.nav-inner {
    max-width: 1024px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 1.5rem;
}

.nav-brand {
    font-weight: 600;
    font-size: 14px;
    color: var(--text);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.nav-brand:hover { text-decoration: none; }

.nav-links {
    display: flex;
    gap: 0.25rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    transition: color var(--transition), background var(--transition);
}

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

.nav-link--logout {
    color: var(--danger);
}

.nav-link--logout:hover {
    background: var(--danger-light);
    color: var(--danger);
}

/* Theme toggle */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
}

.theme-toggle:hover {
    border-color: var(--border-hover);
    color: var(--text);
    background: var(--surface-hover);
}

.theme-toggle svg { width: 16px; height: 16px; }

/* Show/hide sun/moon based on theme */
.icon-sun { display: none; }
.icon-moon { display: block; }
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="dark"] .icon-moon { display: none; }

/* === Main Content === */
.main {
    max-width: 1024px;
    margin: 0 auto;
    padding: 1.5rem;
}

h1 {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: -0.04em;
    margin-bottom: 1.5rem;
    color: var(--text);
}

/* === Flash Messages === */
.flash {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: 13px;
    border: 1px solid;
    display: flex;
    align-items: center;
    gap: 8px;
    animation: flashIn 0.2s ease;
}

@keyframes flashIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

.flash--success {
    background: var(--success-bg);
    color: var(--accent);
    border-color: var(--accent);
}

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

/* === Toast Notifications === */
.toast-container {
    position: fixed;
    top: calc(var(--nav-height) + 12px);
    right: 16px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
}

.toast {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px 16px;
    font-size: 13px;
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    animation: toastIn 0.25s ease;
    min-width: 200px;
}

.toast--success { border-left: 3px solid var(--accent); }
.toast--error { border-left: 3px solid var(--danger); }

@keyframes toastIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

.toast.toast--out {
    animation: toastOut 0.2s ease forwards;
}

@keyframes toastOut {
    to { opacity: 0; transform: translateX(20px); }
}

/* === API Banner === */
.api-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 1rem;
    font-size: 13px;
}

.api-banner-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent);
    background: var(--accent-light);
    padding: 2px 8px;
    border-radius: 4px;
    flex-shrink: 0;
}

.api-banner-url {
    font-family: var(--font-mono);
    font-size: 12px;
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    min-width: 0;
}

.api-banner-url a {
    color: inherit;
    text-decoration: none;
}

.api-banner-url a:hover {
    color: var(--accent);
    text-decoration: underline;
}

.api-copy-btn svg { flex-shrink: 0; }

/* === Toolbar === */
.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
    min-width: 0;
}

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

.toolbar-info {
    font-size: 12px;
    color: var(--text-tertiary);
    white-space: nowrap;
}

/* === Search === */
.search-wrapper {
    position: relative;
    max-width: 280px;
    flex: 1;
}

.search-wrapper svg {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    width: 14px;
    height: 14px;
    pointer-events: none;
}

.search-input {
    width: 100%;
    height: 32px;
    padding: 0 10px 0 30px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text);
    font-size: 13px;
    font-family: var(--font);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.search-input::placeholder { color: var(--text-tertiary); }

.search-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 32px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text);
    font-size: 13px;
    font-weight: 500;
    font-family: var(--font);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
    white-space: nowrap;
    line-height: 1;
}

.btn:hover {
    border-color: var(--border-hover);
    background: var(--surface-hover);
    text-decoration: none;
}

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

.btn--primary:hover {
    opacity: 0.85;
    background: var(--text);
    border-color: var(--text);
}

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

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

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

.btn--danger:hover {
    background: var(--danger);
    border-color: var(--danger);
    color: #fff;
}

.btn--ghost {
    border-color: transparent;
    background: transparent;
}

.btn--ghost:hover {
    background: var(--surface-hover);
    border-color: transparent;
}

.btn--full { width: 100%; }

.btn--sm { height: 28px; padding: 0 8px; font-size: 12px; }

.btn--toggle {
    border: none;
    background: none;
    width: 28px;
    height: 28px;
    padding: 0;
    border-radius: 50%;
    font-size: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
}

.btn--toggle:hover { background: var(--surface-hover); }
.btn--toggle.is-active { color: #0070f3; }
.btn--toggle:not(.is-active) { color: var(--text-tertiary); }

.btn:disabled, .btn.btn--loading {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* === Card List === */
.card-list {
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}

.card:last-child { border-bottom: none; }

.card:hover { background: var(--surface-hover); }

.card.dragging {
    opacity: 0.4;
    background: var(--accent-light);
}

.card.card--hidden { display: none; }

.card-drag-handle {
    cursor: grab;
    color: var(--text-tertiary);
    font-size: 14px;
    padding: 2px;
    user-select: none;
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.card-drag-handle:active { cursor: grabbing; }

.card-thumb {
    width: 64px;
    height: 40px;
    border-radius: 4px;
    overflow: hidden;
    flex-shrink: 0;
    background: var(--surface-hover);
    border: 1px solid var(--border);
}

.card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-thumb-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-size: 14px;
}

.card-body { flex: 1; min-width: 0; }

.card-title {
    font-weight: 500;
    font-size: 13px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: var(--text);
}

.card-meta {
    display: flex;
    gap: 6px;
    margin-top: 2px;
    align-items: center;
}

.badge {
    display: inline-block;
    font-size: 11px;
    padding: 1px 8px;
    border-radius: 999px;
    background: var(--surface-hover);
    color: var(--text-secondary);
    font-weight: 500;
    border: 1px solid var(--border);
    line-height: 1.5;
}

.badge--inactive {
    background: var(--danger-light);
    color: var(--danger);
    border-color: transparent;
}

.card-actions {
    display: flex;
    gap: 4px;
    align-items: center;
    flex-shrink: 0;
}

.inline-form { display: inline; }

/* === Modal === */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 60px 16px 32px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    overflow-y: auto;
}

[data-theme="dark"] .modal-overlay {
    background: rgba(0,0,0,0.75);
}

.modal-overlay.open {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 520px;
    box-shadow: var(--shadow-lg);
    transform: scale(0.97) translateY(-8px);
    transition: transform 0.2s ease;
}

.modal-overlay.open .modal {
    transform: scale(1) translateY(0);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
}

.modal-title {
    font-size: 16px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.modal-close {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    font-size: 18px;
    transition: all var(--transition);
}

.modal-close:hover {
    background: var(--surface-hover);
    color: var(--text);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 16px 20px;
    border-top: 1px solid var(--border);
}

.modal-error {
    margin: 0 20px 0;
    padding: 8px 12px;
    background: var(--danger-light);
    color: var(--danger);
    border-radius: var(--radius-sm);
    font-size: 13px;
    border: 1px solid var(--danger);
}

.modal-loading {
    position: absolute;
    inset: 0;
    background: var(--surface);
    opacity: 0.8;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    z-index: 10;
}

/* === Form Elements === */
.form { max-width: 560px; }

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

.form-group label {
    display: block;
    font-weight: 500;
    font-size: 13px;
    margin-bottom: 6px;
    color: var(--text);
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="password"],
.form-group select,
.form-group textarea {
    width: 100%;
    height: 36px;
    padding: 0 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.form-group input::placeholder { color: var(--text-tertiary); }

.form-hint {
    display: block;
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 4px;
}

.form-check label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-weight: 400;
    font-size: 13px;
}

.form-check input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
    cursor: pointer;
}

.thumb-preview {
    max-width: 200px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

.form-actions {
    display: flex;
    gap: 8px;
    margin-top: 20px;
}

/* === Combobox === */
.combobox {
    position: relative;
}

.combobox input {
    padding-right: 32px;
}

.combobox-toggle {
    position: absolute;
    right: 1px;
    top: 1px;
    bottom: 1px;
    width: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    transition: color var(--transition);
}

.combobox-toggle:hover { color: var(--text); }
.combobox-toggle svg { width: 14px; height: 14px; }

.combobox-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-lg);
    max-height: 200px;
    overflow-y: auto;
    z-index: 50;
    display: none;
}

.combobox-menu.open { display: block; }

.combobox-option {
    padding: 7px 12px;
    cursor: pointer;
    font-size: 13px;
    color: var(--text);
    transition: background var(--transition);
}

.combobox-option:hover,
.combobox-option.highlighted {
    background: var(--accent-light);
    color: var(--accent);
}

.combobox-option--add {
    color: var(--accent);
    font-weight: 500;
    border-top: 1px solid var(--border);
}

.combobox-empty {
    padding: 7px 12px;
    font-size: 13px;
    color: var(--text-tertiary);
    font-style: italic;
}

/* === Empty State === */
.empty-state {
    text-align: center;
    padding: 48px 16px;
    color: var(--text-secondary);
    font-size: 14px;
}

.empty-state .btn { margin-top: 16px; }

/* === Login Page === */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--bg);
}

.login-box {
    width: 100%;
    max-width: 360px;
    padding: 2rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    text-align: center;
}

.login-box h1 {
    font-size: 20px;
    letter-spacing: -0.04em;
    margin-bottom: 4px;
}

.login-subtitle {
    color: var(--text-secondary);
    font-size: 13px;
    margin-bottom: 24px;
}

.login-box .form-group { text-align: left; }
.login-box .flash { text-align: left; }

/* === Spinner === */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* === Scrollbar === */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-hover); }

/* === Responsive === */
@media (max-width: 640px) {
    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .toolbar-left { flex-direction: column; }
    .toolbar-right { justify-content: space-between; }

    .search-wrapper { max-width: 100%; }

    .card {
        flex-wrap: wrap;
        gap: 8px;
    }

    .card-body { width: 100%; }

    .card-actions {
        width: 100%;
        justify-content: flex-end;
        padding-top: 6px;
        border-top: 1px solid var(--border);
    }

    .modal-overlay {
        padding: 0;
        align-items: flex-end;
    }

    .modal {
        max-width: 100%;
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        max-height: 90vh;
        overflow-y: auto;
    }
}
