/* ==========================================================================
   Settings Panel
   ========================================================================== */

/* ===== Overlay ===== */
.settings-overlay {
    position: fixed;
    inset: 0;
    z-index: 300;
    background: var(--bg-overlay);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

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

/* ===== Panel ===== */
.settings-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    min-width: 340px;
    max-width: 90vw;
    box-shadow: var(--shadow-lg);
    transform: translateY(8px) scale(0.98);
    transition: transform 0.25s ease;
}

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

/* ===== Header ===== */
.settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-color);
}

.settings-header h2 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.settings-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    line-height: 1;
    transition: color 0.2s, background 0.2s;
}

.settings-close:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

/* ===== Sections ===== */
.settings-section {
    margin-bottom: var(--space-lg);
}

.settings-section:last-child {
    margin-bottom: 0;
}

.settings-section-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: var(--space-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

/* ===== Theme Options ===== */
.theme-options {
    display: flex;
    gap: var(--space-sm);
}

.theme-btn {
    flex: 1;
    padding: var(--space-md) var(--space-sm);
    background: var(--bg-tertiary);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
}

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

.theme-btn.active {
    border-color: var(--accent-blue);
    background: var(--accent-blue-bg);
}

.theme-btn.active .theme-label {
    color: var(--accent-blue);
    font-weight: 600;
}

.theme-preview {
    display: block;
    height: 32px;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

.theme-preview-minimal {
    background: linear-gradient(135deg, #f5f7fa 40%, #ffffff 40% 60%, #4361ee 60% 62%, #f5f7fa 62%);
}

.theme-preview-clinical {
    background: linear-gradient(135deg, #0c1524 40%, #132035 40% 60%, #0ea5e9 60% 62%, #0c1524 62%);
}

.theme-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: color 0.2s;
}

/* ===== Font Size Options ===== */
.font-size-options {
    display: flex;
    gap: var(--space-sm);
}

.font-size-btn {
    flex: 1;
    padding: var(--space-sm) var(--space-xs);
    background: var(--bg-tertiary);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
}

.font-size-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
}

.font-size-btn.active {
    border-color: var(--accent-blue);
    background: var(--accent-blue-bg);
}

.font-size-btn.active .size-label {
    color: var(--accent-blue);
    font-weight: 600;
}

.font-size-btn .size-label {
    display: block;
    font-size: 0.72rem;
    margin-bottom: 2px;
    color: var(--text-muted);
    transition: color 0.2s;
}

.font-size-btn .size-preview {
    display: block;
    font-weight: 700;
    color: var(--text-primary);
}

.font-size-btn[data-size="14"] .size-preview { font-size: 0.8rem; }
.font-size-btn[data-size="16"] .size-preview { font-size: 1rem; }
.font-size-btn[data-size="18"] .size-preview { font-size: 1.15rem; }
.font-size-btn[data-size="20"] .size-preview { font-size: 1.3rem; }

/* ===== Toggle Switch ===== */
.settings-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    cursor: pointer;
    padding: var(--space-sm) 0;
}

.settings-toggle input {
    display: none;
}

.settings-toggle-switch {
    flex-shrink: 0;
    width: 44px;
    height: 24px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    position: relative;
    transition: all 0.25s ease;
}

.settings-toggle-switch::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 18px;
    height: 18px;
    background: var(--text-muted);
    border-radius: 50%;
    transition: all 0.25s ease;
}

.settings-toggle input:checked + .settings-toggle-switch {
    background: var(--accent-amber);
    border-color: var(--accent-amber);
}

.settings-toggle input:checked + .settings-toggle-switch::after {
    left: 22px;
    background: #ffffff;
}

.settings-toggle-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.settings-toggle-title {
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-primary);
}

.settings-toggle-desc {
    font-size: 0.72rem;
    color: var(--text-muted);
    line-height: 1.3;
}

/* ===== Progress Actions ===== */
.settings-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.settings-action-btn {
    width: 100%;
    justify-content: center;
    padding: 10px var(--space-md);
}

.settings-action-danger {
    color: var(--accent-red);
}

.settings-action-danger:hover {
    border-color: var(--accent-red);
    background: var(--accent-red-bg);
}

/* ===== Responsive ===== */
@media (max-width: 480px) {
    .settings-panel {
        min-width: 0;
        width: calc(100vw - 32px);
        padding: var(--space-md);
    }

    .font-size-options {
        flex-wrap: wrap;
    }

    .font-size-btn {
        flex: 1 1 calc(50% - 4px);
    }
}