/* ═══════════════════════════════════════════════════════
   Settings Module — Design System
   Mirrors Android Telegram settings with modern flair
   ═══════════════════════════════════════════════════════ */

:root {
    --settings-bg: #0f0f1a;
    --settings-surface: #161825;
    --settings-surface-hover: #1e2035;
    --settings-elevated: #1c1e30;
    --settings-border: rgba(255, 255, 255, 0.06);
    --settings-accent: #6c5ce7;
    --settings-accent-soft: rgba(108, 92, 231, 0.15);
    --settings-accent-glow: rgba(108, 92, 231, 0.35);
    --settings-green: #10b981;
    --settings-green-soft: rgba(16, 185, 129, 0.15);
    --settings-red: #ef4444;
    --settings-red-soft: rgba(239, 68, 68, 0.15);
    --settings-orange: #f59e0b;
    --settings-orange-soft: rgba(245, 158, 11, 0.15);
    --settings-cyan: #00cec9;
    --settings-cyan-soft: rgba(0, 206, 201, 0.12);
    --settings-text: #e8e8f0;
    --settings-text-secondary: #8b8da3;
    --settings-text-tertiary: #565872;
    --settings-radius: 14px;
    --settings-radius-sm: 10px;
    --settings-radius-xs: 6px;
    --settings-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
    --settings-transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --settings-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

[data-bs-theme="light"] {
    --settings-bg: #f5f5f5;
    --settings-surface: #ffffff;
    --settings-surface-hover: #f0f0f5;
    --settings-elevated: #ffffff;
    --settings-border: rgba(0, 0, 0, 0.08);
    --settings-text: #1a1a2e;
    --settings-text-secondary: #6b7280;
    --settings-text-tertiary: #9ca3af;
    --settings-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

/* ── Base ─────────────────────────────────────── */
#settings-shell {
    font-family: var(--settings-font);
    background: var(--settings-bg);
    color: var(--settings-text);
    -webkit-font-smoothing: antialiased;
}

#settings-shell * {
    box-sizing: border-box;
}

/* ── Header ───────────────────────────────────── */
.settings-header {
    background: var(--settings-surface);
    border-bottom: 1px solid var(--settings-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
    min-height: 52px;
}

.settings-title {
    letter-spacing: -0.01em;
}

.btn-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: none;
    background: transparent;
    color: var(--settings-text);
    font-size: 1rem;
    cursor: pointer;
    transition: background var(--settings-transition);
}

.btn-icon:hover,
.btn-icon:active {
    background: var(--settings-surface-hover);
}

/* ── Section Group ────────────────────────────── */
.settings-section {
    margin: 12px 16px;
    background: var(--settings-surface);
    border-radius: var(--settings-radius);
    border: 1px solid var(--settings-border);
    overflow: hidden;
    box-shadow: var(--settings-shadow);
    animation: sectionIn 0.3s ease;
}

@keyframes sectionIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.settings-section-header {
    padding: 10px 16px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--settings-accent);
    background: var(--settings-accent-soft);
    border-bottom: 1px solid var(--settings-border);
}

/* ── Row / Item ───────────────────────────────── */
.settings-row {
    display: flex;
    align-items: center;
    padding: 14px 16px;
    cursor: pointer;
    transition: background var(--settings-transition);
    border-bottom: 1px solid var(--settings-border);
    position: relative;
    gap: 12px;
}

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

.settings-row:hover,
.settings-row:active {
    background: var(--settings-surface-hover);
}

.settings-row:active {
    transform: scale(0.985);
}

.settings-row-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    color: #fff;
    position: relative;
}

.settings-row-icon.accent {
    background: linear-gradient(135deg, var(--settings-accent), #a855f7);
}

.settings-row-icon.green {
    background: linear-gradient(135deg, var(--settings-green), #34d399);
}

.settings-row-icon.red {
    background: linear-gradient(135deg, var(--settings-red), #f87171);
}

.settings-row-icon.orange {
    background: linear-gradient(135deg, var(--settings-orange), #fbbf24);
}

.settings-row-icon.cyan {
    background: linear-gradient(135deg, var(--settings-cyan), #67e8f9);
}

.settings-row-icon.verify {
    background: linear-gradient(135deg, #1d9bf0, #0b6bcb);
}

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

.settings-row-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--settings-text);
    line-height: 1.3;
}

.settings-row-subtitle {
    font-size: 0.78rem;
    color: var(--settings-text-secondary);
    margin-top: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.settings-row-trailing {
    color: var(--settings-text-tertiary);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.settings-row-trailing .fa-chevron-right {
    font-size: 0.7rem;
    opacity: 0.5;
}

/* ── Toggle Switch ────────────────────────────── */
.settings-toggle {
    position: relative;
    width: 48px;
    height: 28px;
    flex-shrink: 0;
    cursor: pointer;
}

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

.settings-toggle .toggle-track {
    position: absolute;
    inset: 0;
    background: var(--settings-text-tertiary);
    border-radius: 14px;
    transition: background var(--settings-transition);
}

.settings-toggle input:checked+.toggle-track {
    background: var(--settings-accent);
}

.settings-toggle .toggle-thumb {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 22px;
    height: 22px;
    background: #fff;
    border-radius: 50%;
    transition: transform var(--settings-transition);
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.settings-toggle input:checked+.toggle-track .toggle-thumb {
    transform: translateX(20px);
}

/* ── Profile Header ───────────────────────────── */
.settings-profile-card {
    display: flex;
    align-items: center;
    padding: 20px 16px;
    background: var(--settings-surface);
    border-radius: var(--settings-radius);
    margin: 12px 16px;
    border: 1px solid var(--settings-border);
    cursor: pointer;
    transition: background var(--settings-transition);
    gap: 14px;
}

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

/* Verified (blue badge) */
.settings-verified-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: #1d9bf0;
    color: #fff;
    font-size: 10px;
    margin-left: 5px;
    vertical-align: middle;
    transform: translateY(-1px);
    flex-shrink: 0;
}

.settings-verified-badge i {
    line-height: 1;
}

/* Big badge in verification panel / profile */
.settings-profile-name .settings-verified-badge,
.settings-detail-title .settings-verified-badge {
    width: 18px;
    height: 18px;
    font-size: 11px;
}

.settings-row-icon .settings-verified-badge {
    width: 12px;
    height: 12px;
    font-size: 8px;
    margin-left: 0;
    position: absolute;
    bottom: -2px;
    right: -2px;
}

.settings-avatar {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--settings-accent), #a855f7);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.4rem;
    font-weight: 700;
    flex-shrink: 0;
    overflow: hidden;
}

.settings-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.settings-profile-info {
    flex: 1;
}

.settings-profile-name {
    font-size: 1.1rem;
    font-weight: 700;
}

.settings-profile-status {
    font-size: 0.8rem;
    color: var(--settings-text-secondary);
    margin-top: 2px;
}

/* ── Detail Panel ─────────────────────────────── */
.settings-detail-panel {
    animation: panelSlideIn 0.25s ease;
}

@keyframes panelSlideIn {
    from {
        opacity: 0;
        transform: translateX(30px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.settings-detail-header {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background: var(--settings-surface);
    border-bottom: 1px solid var(--settings-border);
    gap: 10px;
}

.settings-detail-title {
    font-size: 1rem;
    font-weight: 700;
}

/* ── Form Elements ────────────────────────────── */
.settings-form-group {
    padding: 12px 16px;
    border-bottom: 1px solid var(--settings-border);
}

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

.settings-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--settings-accent);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 6px;
    display: block;
}

.settings-input {
    width: 100%;
    padding: 10px 14px;
    background: var(--settings-bg);
    border: 1px solid var(--settings-border);
    border-radius: var(--settings-radius-sm);
    color: var(--settings-text);
    font-size: 0.95rem;
    font-family: var(--settings-font);
    transition: border-color var(--settings-transition);
    outline: none;
}

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

.settings-textarea {
    resize: vertical;
    min-height: 80px;
}

/* ── Buttons ──────────────────────────────────── */
.settings-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--settings-radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--settings-font);
    border: none;
    cursor: pointer;
    transition: all var(--settings-transition);
}

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

.settings-btn-primary:hover {
    background: #5b4bd5;
    box-shadow: 0 4px 16px var(--settings-accent-glow);
}

.settings-btn-danger {
    background: var(--settings-red-soft);
    color: var(--settings-red);
}

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

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

.settings-btn-outline:hover {
    background: var(--settings-surface-hover);
}

.settings-btn-block {
    width: 100%;
}

.settings-btn-lg {
    padding: 14px 24px;
    font-size: 1rem;
    border-radius: var(--settings-radius);
}

/* ── Action Footer ────────────────────────────── */
.settings-action-footer {
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: auto;
}

/* ── Radio / Select Option ────────────────────── */
.settings-option-list {
    padding: 4px 0;
}

.settings-option {
    display: flex;
    align-items: center;
    padding: 14px 16px;
    cursor: pointer;
    transition: background var(--settings-transition);
    gap: 12px;
    border-bottom: 1px solid var(--settings-border);
}

.settings-option:last-child {
    border-bottom: none;
}

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

.settings-option-radio {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: 2px solid var(--settings-text-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: border-color var(--settings-transition);
}

.settings-option.selected .settings-option-radio {
    border-color: var(--settings-accent);
}

.settings-option.selected .settings-option-radio::after {
    content: '';
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--settings-accent);
}

.settings-option-text {
    font-size: 0.95rem;
    flex: 1;
}

.settings-option-desc {
    font-size: 0.75rem;
    color: var(--settings-text-secondary);
}

/* ── Slider ───────────────────────────────────── */
.settings-slider {
    width: 100%;
    -webkit-appearance: none;
    height: 6px;
    border-radius: 3px;
    background: var(--settings-border);
    outline: none;
}

.settings-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--settings-accent);
    cursor: pointer;
    box-shadow: 0 2px 8px var(--settings-accent-glow);
}

.settings-slider-value {
    text-align: center;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--settings-accent);
    margin-top: 6px;
}

/* ── Badge ────────────────────────────────────── */
.settings-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.settings-badge-new {
    background: var(--settings-accent-soft);
    color: var(--settings-accent);
}

.settings-badge-beta {
    background: var(--settings-orange-soft);
    color: var(--settings-orange);
}

/* ── Divider ──────────────────────────────────── */
.settings-divider {
    height: 1px;
    background: var(--settings-border);
    margin: 0 16px;
}

/* ── Storage Bar ──────────────────────────────── */
.settings-storage-bar {
    height: 8px;
    border-radius: 4px;
    background: var(--settings-border);
    overflow: hidden;
    margin: 8px 0;
}

.settings-storage-bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.5s ease;
}

/* ── Session Card ─────────────────────────────── */
.settings-session-card {
    padding: 12px 16px;
    border-bottom: 1px solid var(--settings-border);
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.settings-session-device {
    font-size: 1.5rem;
}

.settings-session-current {
    font-size: 0.7rem;
    color: var(--settings-green);
    font-weight: 600;
}

/* ── Scrollbar ────────────────────────────────── */
#settings-content::-webkit-scrollbar {
    width: 4px;
}

#settings-content::-webkit-scrollbar-track {
    background: transparent;
}

#settings-content::-webkit-scrollbar-thumb {
    background: var(--settings-text-tertiary);
    border-radius: 2px;
}

/* ── Responsive / Desktop ─────────────────────── */
@media (min-width: 768px) {
    .settings-section {
        max-width: 600px;
        margin: 12px auto;
    }

    .settings-profile-card {
        max-width: 600px;
        margin: 12px auto;
    }
}