/* === Design System — Light Premium === */
:root {
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f8fafc;
    --bg-input: #f5f7fa;
    --bg-input-focus: #ffffff;

    --accent: #3b6cff;
    --accent-hover: #2a56e0;
    --accent-glow: rgba(59, 108, 255, .15);
    --accent-soft: rgba(59, 108, 255, .06);

    --danger: #e74c3c;
    --danger-hover: #c0392b;
    --success: #27ae60;
    --warning: #f39c12;

    --text-primary: #1a1a2e;
    --text-secondary: #5a6178;
    --text-muted: #9ca3b4;
    --text-heading: #0d0f1a;

    --border: #e2e6ef;
    --border-light: #ebeef5;
    --border-focus: #3b6cff;

    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    --shadow-sm: 0 1px 3px rgba(0,0,0,.05), 0 1px 2px rgba(0,0,0,.03);
    --shadow: 0 4px 16px rgba(0,0,0,.06);
    --shadow-lg: 0 8px 32px rgba(0,0,0,.08);
    --shadow-glow: 0 4px 20px var(--accent-glow);

    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    --transition: .2s cubic-bezier(.4, 0, .2, 1);
}

/* === Reset & Base === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

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

::selection { background: var(--accent); color: #fff; }

/* === Navbar === */
.navbar {
    background: #ffffff;
    border-bottom: 1px solid var(--border);
    padding: 0 32px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 4px rgba(0,0,0,.04);
}

.nav-brand {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: -.02em;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-brand::before {
    content: '';
    width: 26px;
    height: 26px;
    background: linear-gradient(135deg, var(--accent), #6c5ce7);
    border-radius: 7px;
    display: block;
}

.nav-links { display: flex; align-items: center; gap: 4px; }

.nav-link {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    padding: 7px 14px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}
.nav-link:hover { color: var(--text-heading); background: var(--accent-soft); }

.nav-user { color: var(--text-muted); font-size: 13px; padding: 0 8px; }

.nav-logout { color: var(--danger) !important; opacity: .7; }
.nav-logout:hover { opacity: 1; background: rgba(231,76,60,.06) !important; }

/* === Container === */
.container { max-width: 1080px; margin: 0 auto; padding: 32px 24px; }

/* === Login === */
.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #f0f4ff 0%, #f5f7fa 50%, #faf5ff 100%);
}

.login-box {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 48px 40px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-lg);
}

.login-box h1 {
    text-align: center;
    margin-bottom: 32px;
    color: var(--text-heading);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: -.02em;
}

.login-box h1::after {
    content: '';
    display: block;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), #6c5ce7);
    border-radius: 2px;
    margin: 12px auto 0;
}

/* === Forms === */
.form-group { margin-bottom: 20px; }

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

.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="password"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 11px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font);
    transition: all var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--border-focus);
    background: var(--bg-input-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }

.form-group textarea {
    resize: vertical;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%239ca3b4' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}

.form-hint {
    color: var(--text-muted);
    font-size: 11px;
    margin-top: 4px;
    display: block;
    font-family: var(--font-mono);
}

.checkbox-group label {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-secondary);
    padding: 10px 0;
}

.checkbox-group input[type="checkbox"] {
    appearance: none;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-radius: 5px;
    background: #fff;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
}
.checkbox-group input[type="checkbox"]:checked {
    background: var(--accent);
    border-color: var(--accent);
}
.checkbox-group input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 2px;
    width: 6px;
    height: 10px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.code-fieldset {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 20px;
    background: #fafbfd;
}

.code-fieldset legend {
    font-size: 13px;
    font-weight: 600;
    padding: 0 10px;
    color: var(--text-secondary);
}

/* === Buttons === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: #ffffff;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
    font-family: var(--font);
    white-space: nowrap;
}
.btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    border-color: #d0d5e0;
    box-shadow: var(--shadow-sm);
}

.btn-primary {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    font-weight: 600;
}
.btn-primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    color: #fff;
    box-shadow: var(--shadow-glow);
}

.btn-danger {
    color: var(--danger);
    border-color: rgba(231,76,60,.2);
    background: rgba(231,76,60,.04);
}
.btn-danger:hover {
    background: rgba(231,76,60,.1);
    border-color: rgba(231,76,60,.3);
    color: var(--danger-hover);
}

.btn-sm { padding: 6px 14px; font-size: 12px; border-radius: 6px; }
.btn-full { width: 100%; }
.form-actions { display: flex; gap: 10px; margin-top: 24px; }

/* === Alerts === */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    margin-bottom: 20px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
}
.alert::before { font-size: 18px; flex-shrink: 0; }

.alert-error {
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}
.alert-error::before {
    content: '!'; font-weight: 800; width: 22px; height: 22px;
    display: flex; align-items: center; justify-content: center;
    background: #fee2e2; border-radius: 50%; font-size: 12px; color: #dc2626;
}

.alert-success {
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}
.alert-success::before {
    content: '\2713'; font-weight: 800; width: 22px; height: 22px;
    display: flex; align-items: center; justify-content: center;
    background: #dcfce7; border-radius: 50%; font-size: 12px; color: #16a34a;
}

/* === Page Header === */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 28px;
}

/* === Download card === */
.download-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 32px;
    box-shadow: var(--shadow-sm);
}

.download-card-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 16px;
}

.download-row {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.download-options {
    margin-top: 14px;
}

.download-options summary {
    font-size: 13px;
    color: var(--accent);
    cursor: pointer;
    font-weight: 500;
    user-select: none;
    padding: 6px 0;
}
.download-options summary:hover { color: var(--accent-hover); }

.download-options-body { padding-top: 14px; }

.options-hint {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
    padding: 12px 16px;
    background: var(--accent-soft);
    border: 1px solid rgba(59,108,255,.1);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
}

.options-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

@media (max-width: 768px) {
    .download-row { flex-direction: column; }
    .download-row .btn { width: 100%; }
    .options-grid { grid-template-columns: 1fr; }
}

/* === Section header === */
.section-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.section-header h2 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-heading);
}

.badge {
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 12px;
    font-weight: 600;
    padding: 2px 10px;
    border-radius: 20px;
    border: 1px solid rgba(59,108,255,.15);
}

.page-header h1 {
    font-size: 26px;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: -.02em;
}

/* === Table === */
.table-wrapper {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table { width: 100%; border-collapse: collapse; }

.table th, .table td { padding: 14px 20px; text-align: left; font-size: 13px; }

.table th {
    background: #f8fafc;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .06em;
    border-bottom: 1px solid var(--border);
}

.table td { border-bottom: 1px solid var(--border-light); }
.table tbody tr { transition: background var(--transition); }
.table tbody tr:hover { background: #f8faff; }
.table tbody tr:last-child td { border-bottom: none; }

.td-title {
    color: var(--text-heading);
    font-weight: 500;
    max-width: 220px;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}
.td-url a { color: var(--accent); font-size: 12px; font-family: var(--font-mono); }
.td-url a:hover { color: var(--accent-hover); }
.td-date { white-space: nowrap; color: var(--text-muted); font-size: 12px; }
.td-actions { white-space: nowrap; display: flex; gap: 6px; align-items: center; }
.inline-form { display: inline; }

/* === Empty state === */
.empty-state { text-align: center; padding: 80px 20px; color: var(--text-muted); }
.empty-state p { margin-bottom: 20px; font-size: 16px; }
.empty-state::before {
    content: '';
    display: block;
    width: 64px; height: 64px;
    margin: 0 auto 16px;
    border-radius: 50%;
    background: var(--accent-soft);
    border: 2px dashed var(--border);
}

/* === Done page === */
.done-page { max-width: 640px; }
.done-page h1 {
    font-size: 28px; font-weight: 700;
    color: var(--text-heading); margin-bottom: 4px;
}

.done-info {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin: 20px 0 28px;
    box-shadow: var(--shadow-sm);
}

.info-row { margin-bottom: 12px; font-size: 14px; display: flex; gap: 8px; }
.info-row:last-child { margin-bottom: 0; }
.info-label { font-weight: 600; color: var(--text-muted); min-width: 100px; flex-shrink: 0; }
.info-row a { color: var(--accent); word-break: break-all; font-family: var(--font-mono); font-size: 13px; }
.done-actions { display: flex; gap: 10px; flex-wrap: wrap; }

/* === Edit page === */
.edit-info {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px 20px;
    margin-bottom: 24px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-sm);
}
.edit-info a { color: var(--accent); font-weight: 500; }

/* === Loading === */
.loading-indicator {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 20px;
    color: var(--text-secondary);
    font-size: 14px;
    padding: 16px 20px;
    background: #f0f4ff;
    border-radius: var(--radius-sm);
    border: 1px solid #dbe4ff;
}

.spinner {
    width: 22px; height: 22px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin .7s linear infinite;
    flex-shrink: 0;
}

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

/* === Settings cards === */
.settings-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
}

.settings-card-header {
    margin-bottom: 20px;
}

.settings-card-header h2 {
    font-size: 17px;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 2px;
}

.settings-card-header p {
    font-size: 13px;
    color: var(--text-muted);
}

.settings-grid-2 {
    display: grid;
    grid-template-columns: repeat(4, auto);
    gap: 12px 24px;
    margin-bottom: 20px;
    justify-content: start;
}

.settings-grid-2 .form-group { margin-bottom: 0; }

/* Input with unit suffix */
.input-with-unit {
    display: flex;
    align-items: center;
    gap: 8px;
}

.input-with-unit input {
    width: 100px;
    text-align: center;
    padding: 9px 10px;
}

.input-unit {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    white-space: nowrap;
}

/* Toggle row (inline label + switch) */
.settings-toggle-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 0;
    border-top: 1px solid var(--border-light);
}

.settings-toggle-row:first-of-type {
    border-top: none;
    padding-top: 0;
}

.settings-card-header + .settings-toggle-row {
    border-top: none;
    padding-top: 0;
}

.toggle-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 1px;
}

.toggle-desc {
    font-size: 12px;
    color: var(--text-muted);
    line-height: 1.4;
}

/* Toggle switch (small) */
.toggle-switch {
    position: relative;
    cursor: pointer;
    flex-shrink: 0;
}

.toggle-switch input[type="checkbox"],
.toggle-switch input[type="hidden"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider-sm {
    display: block;
    width: 44px;
    height: 24px;
    background: #d0d5e0;
    border-radius: 12px;
    position: relative;
    transition: background var(--transition);
}

.toggle-slider-sm::after {
    content: '';
    position: absolute;
    width: 18px;
    height: 18px;
    background: #fff;
    border-radius: 50%;
    top: 3px;
    left: 3px;
    transition: transform var(--transition);
    box-shadow: 0 1px 3px rgba(0,0,0,.15);
}

.toggle-switch input[type="checkbox"]:checked ~ .toggle-slider-sm {
    background: var(--accent);
}

.toggle-switch input[type="checkbox"]:checked ~ .toggle-slider-sm::after {
    transform: translateX(20px);
}

/* === Responsive === */
@media (max-width: 768px) {
    .navbar { padding: 0 16px; }
    .container { padding: 20px 16px; }
    .page-header { flex-direction: column; gap: 14px; align-items: flex-start; }
    .table th, .table td { padding: 10px 12px; }
    .nav-links { gap: 2px; }
    .nav-link { padding: 6px 10px; font-size: 13px; }
    .login-box { padding: 32px 24px; margin: 16px; }
    .done-actions { flex-direction: column; }
    .info-row { flex-direction: column; gap: 2px; }
    .settings-grid-2 { grid-template-columns: 1fr 1fr; }
}

/* === Scrollbar === */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: #d0d5e0; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #b0b8c8; }