/* ============================================
   PDF TOOLS - CATEGORY PAGE STYLES (pdt-)
   Light mode default, dark mode via [data-theme="dark"]
   Prefix: pdt- to avoid conflicts with custom_styles.css
   ============================================ */

/* CSS Variables - Light Mode (Default) */
:root {
    --pdt-transition: all 0.25s ease;

    /* Brand colors */
    --pdt-red:   #e64e4e;
    --pdt-blue:  #3399cc;
    --pdt-green: #339966;

    /* Backgrounds */
    --pdt-bg-body:      #fef2f2;
    --pdt-bg-elevated:  #ffffff;
    --pdt-bg-secondary: #f8fafc;

    /* Text */
    --pdt-text:       #334155;
    --pdt-text-dark:  #1e293b;
    --pdt-text-muted: #64748b;
    --pdt-text-light: #94a3b8;

    /* Border */
    --pdt-border:       #e2e8f0;
    --pdt-border-light: #f1f5f9;

    /* Shadows */
    --pdt-shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --pdt-shadow-md: 0 4px 12px rgba(0,0,0,0.1);

    /* Radius */
    --pdt-radius-sm: 8px;
    --pdt-radius-md: 12px;
    --pdt-radius-lg: 16px;
}

/* Dark Mode */
[data-theme="dark"] {
    --pdt-bg-body:      #0f172a;
    --pdt-bg-elevated:  #1e293b;
    --pdt-bg-secondary: #334155;

    --pdt-text:       #e2e8f0;
    --pdt-text-dark:  #f1f5f9;
    --pdt-text-muted: #94a3b8;
    --pdt-text-light: #64748b;

    --pdt-border:       #334155;
    --pdt-border-light: #475569;

    --pdt-shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --pdt-shadow-md: 0 4px 12px rgba(0,0,0,0.4);

    --pdt-red:   #f87171;
    --pdt-blue:  #5bb8e8;
    --pdt-green: #4ade80;
}

/* ============================================
   LAYOUT
   ============================================ */

.pdt-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px 40px;
}

/* ============================================
   BREADCRUMB
   ============================================ */

.pdt-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 0;
    font-size: 14px;
    color: var(--pdt-text-muted);
    flex-wrap: wrap;
}

.pdt-breadcrumb a {
    color: var(--pdt-red);
    text-decoration: none;
    transition: opacity 0.2s;
}

.pdt-breadcrumb a:hover {
    opacity: 0.8;
    text-decoration: underline;
}

.pdt-breadcrumb-sep {
    color: var(--pdt-text-light);
}

.pdt-breadcrumb-current {
    color: var(--pdt-text);
    font-weight: 500;
}

/* ============================================
   PAGE HEADER
   ============================================ */

.pdt-page-header {
    text-align: center;
    padding: 2rem 0 2.5rem;
}

.pdt-header-title-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 16px;
}

.pdt-page-icon {
    width: 56px;
    height: 56px;
    background: var(--pdt-red);
    border-radius: var(--pdt-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    flex-shrink: 0;
}

.pdt-page-icon i {
    width: 28px;
    height: 28px;
}

.pdt-page-header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--pdt-red);
    margin: 0;
    letter-spacing: -0.02em;
}

.pdt-intro {
    font-size: 1.05rem;
    color: var(--pdt-text-muted);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
}

.pdt-intro a {
    color: var(--pdt-red);
    font-weight: 500;
    text-decoration: none;
}

.pdt-intro a:hover {
    text-decoration: underline;
}

/* ============================================
   SECTIONS
   ============================================ */

.pdt-section {
    margin-bottom: 2rem;
}

.pdt-section-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1.25rem;
}

.pdt-section-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--pdt-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    flex-shrink: 0;
}

.pdt-section-icon i {
    width: 20px;
    height: 20px;
}

.pdt-section-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--pdt-text-dark);
    margin: 0;
}

/* ============================================
   CARDS GRID
   ============================================ */

.pdt-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 16px;
}

/* Preview row - single horizontal scroll */
.pdt-grid-preview {
    display: flex;
    flex-wrap: nowrap;
    gap: 16px;
    overflow-x: auto;
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.pdt-grid-preview::-webkit-scrollbar {
    display: none;
}

.pdt-grid-preview .pdt-card {
    flex: 0 0 calc(33.333% - 11px);
    min-width: 260px;
    max-width: 340px;
}

/* ============================================
   CARD
   ============================================ */

.pdt-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--pdt-bg-elevated);
    border: 1px solid var(--pdt-border);
    border-radius: var(--pdt-radius-md);
    text-decoration: none;
    transition: var(--pdt-transition);
    position: relative;
    overflow: hidden;
}

.pdt-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left 0.45s ease;
    pointer-events: none;
}

[data-theme="dark"] .pdt-card::after {
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.07), transparent);
}

.pdt-card:hover::after {
    left: 100%;
}

.pdt-card:hover {
    border-color: var(--pdt-red);
    box-shadow: var(--pdt-shadow-md);
    transform: translateY(-2px);
}

.pdt-see-all {
    background: var(--pdt-bg-secondary);
    border-style: dashed;
}

.pdt-see-all:hover {
    background: var(--pdt-bg-elevated);
    border-style: solid;
}

/* Card Icon */
.pdt-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--pdt-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    flex-shrink: 0;
    transition: transform 0.25s ease;
}

.pdt-card-icon i {
    width: 24px;
    height: 24px;
}

.pdt-card:hover .pdt-card-icon {
    transform: scale(1.1);
}

/* Card Content */
.pdt-card-content {
    flex: 1;
    min-width: 0;
}

.pdt-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--pdt-text-dark);
    margin: 0 0 4px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.pdt-card-desc {
    font-size: 0.875rem;
    color: var(--pdt-text-muted);
    margin: 0;
    line-height: 1.5;
}

/* Card Arrow */
.pdt-card-arrow {
    color: var(--pdt-text-light);
    transition: var(--pdt-transition);
    flex-shrink: 0;
}

.pdt-card-arrow i {
    width: 20px;
    height: 20px;
}

.pdt-card:hover .pdt-card-arrow {
    color: var(--pdt-red);
    transform: translateX(4px);
}

/* ============================================
   BADGES
   ============================================ */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 9999px;
    font-size: 0.68rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-popular { background: rgba(230,78,78,0.1); color: #e64e4e; }
.badge-new     { background: rgba(51,153,102,0.1); color: #339966; }
.badge-beta    { background: rgba(99,102,241,0.1); color: #6366f1; }

[data-theme="dark"] .badge-popular { background: rgba(248,113,113,0.2); color: #fca5a5; }
[data-theme="dark"] .badge-new     { background: rgba(74,222,128,0.2);  color: #86efac; }
[data-theme="dark"] .badge-beta    { background: rgba(129,140,248,0.2); color: #a5b4fc; }

/* ============================================
   INFO CARDS (About, FAQ)
   ============================================ */

.pdt-info-card {
    background: var(--pdt-bg-elevated);
    border: 1px solid var(--pdt-border);
    border-radius: var(--pdt-radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
}

.pdt-info-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1.25rem;
}

.pdt-info-icon {
    width: 36px;
    height: 36px;
    background: var(--pdt-red);
    border-radius: var(--pdt-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    flex-shrink: 0;
}

.pdt-info-icon i {
    width: 20px;
    height: 20px;
}

.pdt-info-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--pdt-text-dark);
    margin: 0;
}

.pdt-info-text {
    color: var(--pdt-text-muted);
    line-height: 1.75;
    margin: 0 0 1.5rem;
    max-width: 800px;
}

.pdt-info-text a {
    color: var(--pdt-red);
    font-weight: 500;
    text-decoration: none;
}

.pdt-info-text a:hover {
    text-decoration: underline;
}

/* ============================================
   FEATURES GRID
   ============================================ */

.pdt-features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.pdt-feature {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    background: var(--pdt-bg-secondary);
    border-radius: var(--pdt-radius-md);
}

.pdt-feature-icon {
    width: 32px;
    height: 32px;
    border-radius: var(--pdt-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    flex-shrink: 0;
}

.pdt-feature-icon i {
    width: 16px;
    height: 16px;
}

.pdt-feature-text h4 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--pdt-text-dark);
    margin: 0 0 3px;
}

.pdt-feature-text p {
    font-size: 0.8rem;
    color: var(--pdt-text-muted);
    margin: 0;
    line-height: 1.4;
}

/* ============================================
   FAQ - uses global .faq-item.open from _footer.php
   ============================================ */

.pdt-faq-list {
    display: grid;
    gap: 0.75rem;
}

.pdt-faq-list .faq-item {
    border: 1px solid var(--pdt-border);
    border-radius: var(--pdt-radius-md);
    overflow: hidden;
    transition: border-color 0.2s;
}

.pdt-faq-list .faq-item:hover {
    border-color: var(--pdt-red);
}

.pdt-faq-list .faq-question {
    width: 100%;
    padding: 1rem 1.25rem;
    background: var(--pdt-bg-secondary);
    border: none;
    text-align: left;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--pdt-text-dark);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    transition: background 0.2s;
}

.pdt-faq-list .faq-question:hover {
    background: var(--pdt-bg-elevated);
}

.pdt-faq-list .faq-question span {
    flex: 1;
}

.pdt-faq-list .faq-question i {
    color: var(--pdt-red);
    transition: transform 0.3s;
    flex-shrink: 0;
    width: 20px;
    height: 20px;
}

.pdt-faq-list .faq-item.open .faq-question {
    background: var(--pdt-bg-elevated);
    border-bottom: 1px solid var(--pdt-border);
}

.pdt-faq-list .faq-item.open .faq-question i {
    transform: rotate(180deg);
}

.pdt-faq-list .faq-answer {
    display: none;
    padding: 1rem 1.25rem;
    background: var(--pdt-bg-elevated);
}

.pdt-faq-list .faq-item.open .faq-answer {
    display: block;
}

.pdt-faq-list .faq-answer p {
    margin: 0;
    color: var(--pdt-text-muted);
    line-height: 1.7;
    font-size: 0.95rem;
}

.pdt-faq-list .faq-answer a {
    color: var(--pdt-red);
    font-weight: 500;
    text-decoration: none;
}

.pdt-faq-list .faq-answer a:hover {
    text-decoration: underline;
}

/* ============================================
   RELATED CATEGORIES PROMO
   ============================================ */

.pdt-promo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 2rem;
}

.pdt-promo-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    border-radius: var(--pdt-radius-md);
    text-decoration: none;
    color: var(--pdt-text);
    transition: var(--pdt-transition);
}

.pdt-promo-pdf       { background: rgba(230,78,78,0.08);   border: 1px solid rgba(230,78,78,0.18); }
.pdt-promo-converter { background: rgba(51,153,204,0.08);  border: 1px solid rgba(51,153,204,0.18); }
.pdt-promo-viewer    { background: rgba(100,116,139,0.08); border: 1px solid rgba(100,116,139,0.18); }
.pdt-promo-tools     { background: rgba(51,153,102,0.08);  border: 1px solid rgba(51,153,102,0.18); }

[data-theme="dark"] .pdt-promo-pdf       { background: rgba(248,113,113,0.12); border-color: rgba(248,113,113,0.22); }
[data-theme="dark"] .pdt-promo-converter { background: rgba(92,184,232,0.12);  border-color: rgba(92,184,232,0.22); }
[data-theme="dark"] .pdt-promo-viewer    { background: rgba(148,163,184,0.12); border-color: rgba(148,163,184,0.22); }
[data-theme="dark"] .pdt-promo-tools     { background: rgba(74,222,128,0.12);  border-color: rgba(74,222,128,0.22); }

.pdt-promo-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--pdt-shadow-md);
}

.pdt-promo-pdf:hover       { border-color: #e64e4e; }
.pdt-promo-converter:hover { border-color: #3399cc; }
.pdt-promo-viewer:hover    { border-color: #64748b; }
.pdt-promo-tools:hover     { border-color: #339966; }

.pdt-promo-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--pdt-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    flex-shrink: 0;
}

.pdt-promo-icon i { width: 20px; height: 20px; }

.pdt-promo-pdf .pdt-promo-icon       { background: #e64e4e; }
.pdt-promo-converter .pdt-promo-icon { background: #3399cc; }
.pdt-promo-viewer .pdt-promo-icon    { background: #64748b; }
.pdt-promo-tools .pdt-promo-icon     { background: #339966; }

.pdt-promo-content { flex: 1; min-width: 0; }

.pdt-promo-content h3 {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--pdt-text-dark);
    margin: 0 0 2px;
}

.pdt-promo-content p {
    font-size: 0.8rem;
    color: var(--pdt-text-muted);
    margin: 0;
}

.pdt-promo-arrow {
    color: var(--pdt-text-muted);
    transition: var(--pdt-transition);
    flex-shrink: 0;
}

.pdt-promo-arrow i { width: 18px; height: 18px; }

.pdt-promo-card:hover .pdt-promo-arrow { transform: translateX(4px); }
.pdt-promo-pdf:hover .pdt-promo-arrow       { color: #e64e4e; }
.pdt-promo-converter:hover .pdt-promo-arrow { color: #3399cc; }
.pdt-promo-viewer:hover .pdt-promo-arrow    { color: #64748b; }
.pdt-promo-tools:hover .pdt-promo-arrow     { color: #339966; }

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
    .pdt-container { padding: 0 16px 30px; }

    .pdt-page-header { padding: 1.5rem 0 2rem; }

    .pdt-page-icon { width: 48px; height: 48px; }
    .pdt-page-icon i { width: 24px; height: 24px; }

    .pdt-page-header h1 { font-size: 1.5rem; }

    .pdt-grid { grid-template-columns: 1fr; }

    .pdt-grid-preview {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .pdt-grid-preview .pdt-card {
        flex: 0 0 85%;
        min-width: 260px;
        max-width: none;
    }

    .pdt-card { padding: 16px; }

    .pdt-info-card { padding: 1.25rem; }

    .pdt-features-grid { grid-template-columns: 1fr; }

    .pdt-promo-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .pdt-page-header h1 { font-size: 1.25rem; }
    .pdt-section-header h2 { font-size: 1.05rem; }
    .pdt-card-icon { width: 42px; height: 42px; }
    .pdt-card-icon i { width: 22px; height: 22px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .pdt-card::after { display: none; }
    .pdt-card:hover,
    .pdt-promo-card:hover { transform: none; }
    *, *::before, *::after { transition-duration: 0.01ms !important; }
}