/* ============================================================================
   TabDSP Documentation - Component Styles
   ============================================================================ */

/* ============================================================================
   Gear Head Details (Collapsible Advanced Content)
   ============================================================================ */

.gearhead-details {
    margin: var(--spacing-lg) 0;
    background: var(--color-bg-tertiary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.gearhead-details summary {
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    font-weight: 600;
    color: var(--color-accent-purple);
    user-select: none;
    list-style: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: background var(--transition-fast);
}

.gearhead-details summary::-webkit-details-marker {
    display: none;
}

.gearhead-details summary:hover {
    background: var(--color-bg-elevated);
}

.gearhead-details[open] summary {
    background: var(--color-bg-elevated);
    border-bottom: var(--border-width) solid var(--border-color);
}

.gearhead-content {
    padding: var(--spacing-lg);
    animation: slideDown var(--transition-base);
}

.gearhead-content p {
    font-size: var(--font-size-base);
    line-height: 1.7;
}

.gearhead-content ul {
    margin-top: var(--spacing-md);
}

.gearhead-content li {
    font-size: var(--font-size-base);
    line-height: 1.6;
}

.gearhead-content strong {
    color: var(--color-accent-purple);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================================================
   Feature Showcase (Icon Grid)
   ============================================================================ */

.feature-showcase {
    display: grid;
    gap: var(--spacing-lg);
}

.showcase-item {
    padding: var(--spacing-lg);
    background: var(--color-bg-secondary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.showcase-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(6, 182, 212, 0.3);
}

.showcase-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: white;
}

.showcase-item h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.showcase-item p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

/* ============================================================================
   Limitations Grid (Honest Section)
   ============================================================================ */

.section-honest {
    background: var(--color-bg-secondary);
}

.limitations-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.limitation-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-bg-tertiary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
}

.limitation-item svg {
    flex-shrink: 0;
    color: var(--color-accent-red);
    opacity: 0.7;
}

.limitation-item h3 {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.limitation-item p {
    font-size: var(--font-size-sm);
    margin: 0;
    color: var(--color-text-secondary);
}

@media (max-width: 768px) {
    .limitations-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================================================
   Features List (Main Feature Cards)
   ============================================================================ */

.features-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.feature-card {
    padding: var(--spacing-xl);
    background: var(--color-bg-secondary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.feature-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: white;
    flex-shrink: 0;
}

.feature-icon-cyan {
    background: var(--gradient-cyan);
}

.feature-icon-purple {
    background: var(--gradient-purple);
}

.feature-icon-orange {
    background: var(--gradient-orange);
}

.feature-icon-red {
    background: var(--gradient-red);
}

.feature-icon-green {
    background: linear-gradient(135deg, #22c55e 0%, #10b981 100%);
}

.feature-icon-blue {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    margin: 0;
}

.feature-card > p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

.feature-list {
    list-style: none;
    padding: 0;
    margin-bottom: var(--spacing-lg);
}

.feature-list li {
    padding-left: var(--spacing-lg);
    position: relative;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.feature-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--color-accent-cyan);
    font-weight: 700;
}

.feature-link {
    color: var(--color-accent-cyan);
    font-weight: 600;
    font-size: var(--font-size-sm);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.feature-link:hover {
    gap: var(--spacing-sm);
}

@media (max-width: 968px) {
    .features-list {
        grid-template-columns: 1fr;
    }
}

/* ============================================================================
   Use Cases Grid
   ============================================================================ */

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.use-case {
    padding: var(--spacing-lg);
    background: var(--color-bg-tertiary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.use-case:hover {
    border-color: rgba(6, 182, 212, 0.5);
    box-shadow: var(--shadow-md);
}

.use-case h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
}

.use-case p {
    font-size: var(--font-size-sm);
    margin: 0;
    color: var(--color-text-secondary);
}

@media (max-width: 968px) {
    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================================================
   CTA Section
   ============================================================================ */

.section-cta {
    text-align: center;
    background: radial-gradient(ellipse at center, rgba(6, 182, 212, 0.1) 0%, transparent 70%);
}

.section-cta h2 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-md);
}

.section-cta p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
}

.cta-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
}

@media (max-width: 640px) {
    .cta-actions {
        flex-direction: column;
        align-items: stretch;
    }
}

/* ============================================================================
   Search Modal
   ============================================================================ */

.search-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: var(--spacing-2xl);
    animation: fadeIn var(--transition-fast);
}

.search-modal-content {
    width: 100%;
    max-width: 600px;
    background: var(--color-bg-secondary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    margin-top: 10vh;
    animation: slideDown var(--transition-base);
}

.search-input-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: var(--border-width) solid var(--border-color);
}

.search-input-wrapper svg {
    color: var(--color-text-tertiary);
    flex-shrink: 0;
}

#searchInput {
    flex: 1;
    background: none;
    border: none;
    outline: none;
    font-size: var(--font-size-lg);
    color: var(--color-text-primary);
    font-family: var(--font-sans);
}

#searchInput::placeholder {
    color: var(--color-text-tertiary);
}

.search-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--color-text-tertiary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

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

.search-results {
    max-height: 400px;
    overflow-y: auto;
    padding: var(--spacing-sm);
}

.search-result-item {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.search-result-item:hover {
    background: var(--color-bg-tertiary);
}

.search-result-title {
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

.search-result-excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.search-result-path {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-xs);
    font-family: var(--font-mono);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ============================================================================
   Parameter Tables (for reference pages)
   ============================================================================ */

.param-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-lg) 0;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.param-table th {
    background: var(--color-bg-tertiary);
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--color-text-primary);
    border-bottom: var(--border-width) solid var(--border-color);
}

.param-table td {
    padding: var(--spacing-md);
    border-bottom: var(--border-width) solid var(--border-color);
    color: var(--color-text-secondary);
}

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

.param-table code {
    font-size: var(--font-size-sm);
}

/* ============================================================================
   Info Boxes (Note, Warning, Tip)
   ============================================================================ */

.info-box {
    padding: var(--spacing-md) var(--spacing-lg);
    border-left: 4px solid;
    border-radius: var(--radius-md);
    margin: var(--spacing-lg) 0;
    background: var(--color-bg-tertiary);
}

.info-box p:last-child {
    margin: 0;
}

.info-box-note {
    border-color: var(--color-accent-blue);
}

.info-box-warning {
    border-color: var(--color-accent-orange);
}

.info-box-tip {
    border-color: var(--color-accent-green);
}

.info-box-title {
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

/* ============================================================================
   Signal Flow Diagram
   ============================================================================ */

.signal-flow-container {
    background: var(--color-bg-secondary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    overflow-x: auto;
}

.signal-module {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--color-bg-tertiary);
    border: 2px solid;
    border-radius: var(--radius-md);
    min-width: 100px;
}

.signal-module-eq { border-color: var(--module-eq); }
.signal-module-multiband { border-color: var(--module-mb); }
.signal-module-comp { border-color: var(--module-comp); }
.signal-module-limiter { border-color: var(--module-lim); }

/* ============================================================================
   Glossary Terms
   ============================================================================ */

.glossary-term {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: var(--border-width) solid var(--border-color);
}

.glossary-term:last-child {
    border-bottom: none;
}

.glossary-term h3 {
    color: var(--color-accent-cyan);
    margin-bottom: var(--spacing-sm);
}

.glossary-definition {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.glossary-advanced {
    background: var(--color-bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-accent-purple);
}

/* ============================================================================
   Pricing Cards (Licensing Page)
   ============================================================================ */

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.pricing-card {
    background: var(--color-bg-secondary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    transition: all var(--transition-base);
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.pricing-card-featured {
    border-color: var(--color-accent-purple);
    box-shadow: 0 0 20px rgba(168, 85, 247, 0.15);
}

.pricing-card-featured:hover {
    box-shadow: 0 0 30px rgba(168, 85, 247, 0.25);
}

.pricing-card-header {
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-md);
    text-align: center;
}

.pricing-card-header h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-primary);
}

.pricing-card-enthusiast {
    border-bottom: 3px solid var(--color-accent-orange);
}

.pricing-card-professional {
    border-bottom: 3px solid var(--color-accent-purple);
}

.pricing-card-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin: 0;
}

.pricing-card-features {
    list-style: none;
    padding: 0 var(--spacing-lg);
    margin: 0;
    flex: 1;
}

.pricing-card-features li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    border-bottom: var(--border-width) solid var(--border-color);
}

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

.pricing-card-features li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    color: var(--color-accent-green);
    font-weight: 700;
}

.pricing-card-actions {
    padding: var(--spacing-lg);
    display: flex;
    justify-content: center;
}

.pricing-card-actions .btn {
    width: 100%;
    text-align: center;
    justify-content: center;
}

@media (max-width: 640px) {
    .pricing-grid {
        grid-template-columns: 1fr;
    }
}