/**
 * Category Template Styles
 *
 * Shared styles for all product category pages.
 * Category-specific colors are overridden via CSS custom properties.
 *
 * @package ChartUpgrades
 * @since 1.0.0
 */

/* ==========================================================================
   Category CSS Custom Properties (can be overridden per category)
   ========================================================================== */

:root {
    /* Default category accent (can be overridden inline) */
    --category-accent: var(--color-success);
    --category-accent-rgb: var(--color-success-rgb);
    --category-gradient-start: rgba(0, 200, 83, 0.12);
    --category-gradient-end: rgba(0, 217, 255, 0.08);
}

/* ==========================================================================
   Category Hero Section
   ========================================================================== */

.category-hero {
    position: relative;
    padding: calc(var(--header-height) + var(--spacing-16)) 0 var(--spacing-16);
    background: var(--color-base);
    overflow: hidden;
}

.category-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 40% at 30% 50%, var(--category-gradient-start) 0%, transparent 50%),
        radial-gradient(ellipse 50% 30% at 70% 40%, var(--category-gradient-end) 0%, transparent 50%);
}

.category-hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 50px 50px;
}

.category-hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.category-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: rgba(var(--category-accent-rgb), 0.15);
    border: 1px solid rgba(var(--category-accent-rgb), 0.3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--category-accent);
    margin-bottom: var(--spacing-4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.category-hero h1 {
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-extrabold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-4);
}

.category-hero h1 span {
    color: var(--category-accent);
}

.category-hero-description {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-6);
}

.category-stats {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-6);
}

.category-stat {
    text-align: center;
}

.category-stat-number {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-accent);
    font-family: var(--font-family-mono);
}

.category-stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ==========================================================================
   Email Gate Notice
   ========================================================================== */

.email-gate-notice {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-4) var(--spacing-5);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-6);
}

.email-gate-icon {
    width: 48px;
    height: 48px;
    background: var(--category-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.email-gate-icon svg {
    width: 24px;
    height: 24px;
    color: white;
}

.email-gate-text strong {
    display: block;
    color: var(--color-text);
    margin-bottom: var(--spacing-1);
}

.email-gate-text span {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ==========================================================================
   Category Layout
   ========================================================================== */

.category-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--spacing-12);
    align-items: start;
}

@media (max-width: 1024px) {
    .category-layout {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Table of Contents Sidebar
   ========================================================================== */

.category-toc {
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-6));
    padding: var(--spacing-5);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

@media (max-width: 1024px) {
    .category-toc {
        display: none;
    }
}

.category-toc h3 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--spacing-4);
}

.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-list li {
    margin-bottom: var(--spacing-2);
}

.toc-list a {
    display: block;
    padding: var(--spacing-2) var(--spacing-3);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    border-radius: var(--radius-md);
    transition: all 0.2s ease;
}

.toc-list a:hover,
.toc-list a.active {
    color: var(--color-text);
    background: rgba(255, 255, 255, 0.05);
}

.toc-list a.active {
    border-left: 2px solid var(--category-accent);
    padding-left: calc(var(--spacing-3) - 2px);
}

.toc-cta {
    margin-top: var(--spacing-5);
    padding-top: var(--spacing-5);
    border-top: 1px solid var(--color-border);
}

.toc-cta .btn {
    width: 100%;
    justify-content: center;
}

/* ==========================================================================
   Category Article Content
   ========================================================================== */

.category-article {
    max-width: 800px;
}

.category-article h2 {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-4);
    margin-top: var(--spacing-12);
    color: var(--color-text);
}

.category-article h2:first-child {
    margin-top: 0;
}

.category-article h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-3);
    margin-top: var(--spacing-8);
    color: var(--color-text);
}

.category-article p {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-4);
}

.category-article ul,
.category-article ol {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-4);
    padding-left: var(--spacing-6);
}

.category-article li {
    margin-bottom: var(--spacing-2);
}

.content-section {
    scroll-margin-top: calc(var(--header-height) + var(--spacing-6));
}

/* ==========================================================================
   FAQ Section
   ========================================================================== */

.faq-section {
    margin-top: var(--spacing-12);
    scroll-margin-top: calc(var(--header-height) + var(--spacing-6));
}

.faq-section h2 {
    margin-top: 0 !important;
}

.faq-item {
    border-bottom: 1px solid var(--color-border);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-5) 0;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    text-align: left;
    cursor: pointer;
    transition: color 0.2s ease;
}

.faq-question:hover {
    color: var(--category-accent);
}

.faq-question svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.faq-question.is-open svg {
    transform: rotate(180deg);
}

.faq-answer {
    padding-bottom: var(--spacing-5);
    overflow: hidden;
}

.faq-answer p {
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin: 0;
}

/* ==========================================================================
   Concepts Grid
   ========================================================================== */

.concepts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
    margin: var(--spacing-6) 0;
}

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

.concept-card {
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    transition: border-color var(--transition-fast);
}

.concept-card:hover {
    border-color: rgba(var(--category-accent-rgb), 0.5);
}

.concept-card h4 {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-2);
    color: var(--category-accent);
}

.concept-card h4 svg {
    flex-shrink: 0;
    color: var(--category-accent);
}

.concept-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin: 0;
}

/* ==========================================================================
   Testimonials Section
   ========================================================================== */

.testimonials-section {
    margin-top: var(--spacing-8);
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--color-border-light);
}

.testimonials-section h2 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-6);
}

.testimonial-card {
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    margin-bottom: var(--spacing-4);
}

.testimonial-quote {
    font-size: var(--font-size-lg);
    font-style: italic;
    color: var(--color-text);
    margin-bottom: var(--spacing-4);
    line-height: var(--line-height-relaxed);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--category-accent) 0%, rgba(var(--category-accent-rgb), 0.7) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    color: white;
    font-size: var(--font-size-sm);
}

.testimonial-info strong {
    display: block;
    color: var(--color-text);
}

.testimonial-info span {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ==========================================================================
   Video CTA Component
   ========================================================================== */

.category-video-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    text-decoration: none;
    transition: all var(--transition-base);
    margin-top: var(--spacing-6);
}

.category-video-cta:hover {
    border-color: var(--category-accent);
    transform: translateY(-2px);
}

.video-thumb {
    position: relative;
    width: 120px;
    height: 68px;
    background: var(--color-base-light);
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
}

.video-thumb-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 36px;
    height: 36px;
    background: var(--color-cta);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.video-thumb-play svg {
    width: 14px;
    height: 14px;
    color: white;
    margin-left: 2px;
}

.video-text strong {
    display: block;
    color: var(--color-text);
    margin-bottom: var(--spacing-1);
}

.video-text span {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ==========================================================================
   Info Box Component
   ========================================================================== */

.info-box {
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    margin: var(--spacing-4) 0;
}

.info-box--warning {
    background: rgba(255, 152, 0, 0.1);
    border-color: rgba(255, 152, 0, 0.3);
}

.info-box--warning h4 {
    color: #FF9800;
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-2);
}

.info-box--warning h4 svg {
    color: #FF9800;
}

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

/* ==========================================================================
   Upgrade Prompt Section
   ========================================================================== */

.upgrade-prompt {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-10);
    margin-top: var(--spacing-12);
    text-align: center;
}

.upgrade-prompt h3 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-3);
    margin-top: 0;
}

.upgrade-prompt > p {
    color: var(--color-text-secondary);
    max-width: 500px;
    margin: 0 auto var(--spacing-8);
}

.upgrade-comparison {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.upgrade-card {
    background: var(--color-base-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-5);
    text-align: left;
}

.upgrade-card.is-recommended {
    border-color: var(--category-accent);
    position: relative;
}

.upgrade-card.is-recommended::before {
    content: 'Recommended';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--category-accent);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.upgrade-card h4 {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-4);
}

.upgrade-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.upgrade-card li {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2);
}

.upgrade-card li .check {
    color: var(--color-success);
}

.upgrade-card li .cross {
    color: var(--color-text-muted);
}

/* Bundle highlight variant */
.bundle-highlight {
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-base-light) 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-10);
    margin-top: var(--spacing-12);
    text-align: center;
}

.bundle-highlight h3 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-3);
}

/* ==========================================================================
   Products Section
   ========================================================================== */

.products-section {
    margin-top: var(--spacing-16);
    scroll-margin-top: calc(var(--header-height) + var(--spacing-6));
}

/* Prominent Products Section - placed right after hero */
.products-section--prominent {
    margin-top: 0;
    padding: var(--spacing-12) 0;
    background: var(--color-base);
    border-bottom: 1px solid var(--color-border);
}

.products-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-6);
}

.products-section-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin: 0;
}

/* ==========================================================================
   Testimonials
   ========================================================================== */

.testimonial-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    margin-top: var(--spacing-6);
}

.testimonial-quote {
    font-size: var(--font-size-lg);
    font-style: italic;
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-4);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    background: var(--category-accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    color: white;
    font-size: var(--font-size-lg);
}

.testimonial-info strong {
    display: block;
    color: var(--color-text);
    font-weight: var(--font-weight-semibold);
}

.testimonial-info span {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* ==========================================================================
   Responsive Adjustments
   ========================================================================== */

@media (max-width: 768px) {
    .category-hero {
        padding: calc(var(--header-height) + var(--spacing-10)) 0 var(--spacing-10);
    }

    .category-hero h1 {
        font-size: var(--font-size-3xl);
    }

    .category-hero-description {
        font-size: var(--font-size-lg);
    }

    .category-stats {
        gap: var(--spacing-4);
    }

    .category-stat-number {
        font-size: var(--font-size-2xl);
    }

    .email-gate-notice {
        flex-direction: column;
        text-align: center;
    }

    .category-article h2 {
        font-size: var(--font-size-2xl);
    }

    .category-article h3 {
        font-size: var(--font-size-lg);
    }

    .upgrade-prompt {
        padding: var(--spacing-6);
    }

    .bundle-highlight {
        padding: var(--spacing-6);
    }
}