/*
Theme Name: PDFteca
Theme URI: https://pdfteca.com
Description: Tema moderno e vibrante para PDFteca - Baixe PDFs ou leia online. Design otimizado para SEO, performance e experiencia de leitura.
Author: PDFteca
Author URI: https://pdfteca.com
Template: generatepress
Version: 2.0.0
License: GPL-2.0+
Text Domain: pdfteca
*/

:root {
    --color-primary: #c0392b;
    --color-primary-hover: #e74c3c;
    --color-primary-dark: #96281b;
    --color-secondary: #2c3e50;
    --color-accent: #f39c12;
    --color-accent-hover: #f1c40f;
    --color-bg: #f5f5f5;
    --color-white: #ffffff;
    --color-text: #2c3e50;
    --color-text-light: #7f8c8d;
    --color-border: #ecf0f1;
    --color-star: #f39c12;
    --color-star-empty: #ddd;
    --font-heading: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, sans-serif;
    --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, sans-serif;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
    --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
    --transition-fast: all 0.15s cubic-bezier(0.4,0,0.2,1);
}

*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.pdfteca-single-pdf { background: var(--color-bg); }

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: var(--transition-fast);
}
a:hover { color: var(--color-primary-hover); }

img {
    max-width: 100%;
    height: auto;
    display: block;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: 1.3;
    color: var(--color-secondary);
    margin: 0 0 0.75em;
}

/* Header moderno */
.site-header {
    background: var(--color-primary) !important;
    box-shadow: 0 2px 20px rgba(0,0,0,0.15);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.site-header .inside-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1280px;
    padding: 10px 24px;
}

.site-header .header-image { width: 220px !important; height: auto; }

.main-navigation {
    background: transparent !important;
}

.main-navigation .main-nav ul li a {
    color: #fff !important;
    font-weight: 600;
    font-size: 15px;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.main-navigation .main-nav ul li a:hover,
.main-navigation .main-nav ul li[class*="current-menu-"] > a {
    background: rgba(255,255,255,0.2) !important;
    color: #fff !important;
}

/* Hero section homepage */
.pdfteca-hero {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    padding: 60px 24px 70px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.pdfteca-hero::before {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
    animation: heroPulse 8s ease-in-out infinite;
}

@keyframes heroPulse {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(5%, 5%); }
}

.pdfteca-hero h1 {
    font-size: clamp(28px, 5vw, 48px);
    font-weight: 800;
    color: #fff;
    margin: 0 0 12px;
    position: relative;
    z-index: 1;
}

.pdfteca-hero p {
    font-size: clamp(16px, 2.5vw, 20px);
    opacity: 0.92;
    max-width: 700px;
    margin: 0 auto 28px;
    position: relative;
    z-index: 1;
}

.pdfteca-hero-search {
    display: flex;
    gap: 10px;
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.pdfteca-hero-search input {
    flex: 1;
    padding: 14px 20px;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    outline: none;
    box-shadow: var(--shadow-lg);
}

.pdfteca-hero-search button {
    padding: 14px 30px;
    background: var(--color-accent);
    color: #fff;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.pdfteca-hero-search button:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(243,156,18,0.4);
}

/* Section titles */
.pdfteca-section-title {
    text-align: center;
    font-size: clamp(22px, 3.5vw, 32px);
    font-weight: 800;
    color: var(--color-secondary);
    margin: 0 0 32px;
    position: relative;
    padding-bottom: 16px;
}

.pdfteca-section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--color-primary);
    border-radius: 2px;
}

/* Grid de posts */
.pdfteca-grid {
    display: grid;
    gap: 24px;
}

.pdfteca-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.pdfteca-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .pdfteca-grid-3,
    .pdfteca-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .pdfteca-grid-3,
    .pdfteca-grid-4 {
        grid-template-columns: 1fr;
    }
}

/* Card de PDF */
.pdfteca-card {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

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

.pdfteca-card-thumb {
    position: relative;
    overflow: hidden;
    aspect-ratio: 2/3;
    background: var(--color-bg);
}

.pdfteca-card-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.pdfteca-card:hover .pdfteca-card-thumb img {
    transform: scale(1.05);
}

.pdfteca-card-body {
    padding: 16px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.pdfteca-card-title {
    font-size: 15px;
    font-weight: 700;
    line-height: 1.4;
    margin: 0 0 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.pdfteca-card-title a {
    color: var(--color-secondary);
}

.pdfteca-card-title a:hover {
    color: var(--color-primary);
}

.pdfteca-card-meta {
    font-size: 13px;
    color: var(--color-text-light);
    margin-top: auto;
}

.pdfteca-card-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background: var(--color-accent);
    color: #fff;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 2;
}

/* Paginacao */
.pdfteca-pagination {
    display: flex;
    justify-content: center;
    gap: 6px;
    margin-top: 40px;
}

.pdfteca-pagination .page-numbers {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: 0 12px;
    background: var(--color-white);
    border-radius: var(--radius-sm);
    font-weight: 600;
    color: var(--color-secondary);
    transition: var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.pdfteca-pagination .page-numbers.current {
    background: var(--color-primary);
    color: #fff;
}

.pdfteca-pagination .page-numbers:hover:not(.current) {
    background: var(--color-primary);
    color: #fff;
}

/* Single PDF layout */
.pdfteca-single-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 32px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 32px 24px;
}

@media (max-width: 900px) {
    .pdfteca-single-layout {
        grid-template-columns: 1fr;
    }
}

.pdfteca-single-main {
    min-width: 0;
}

.pdfteca-single-sidebar { }

.pdfteca-single-sidebar .widget {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

/* Book shelf featured image */
.pdfteca-book-shelf {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 30px 20px 40px;
    margin: 20px auto 30px;
    max-width: 320px;
    background: linear-gradient(180deg, #f5deb3 0%, #deb887 100%);
    border-radius: var(--radius-md);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15), inset 0 2px 4px rgba(255,255,255,0.3);
}

.pdfteca-book-shelf::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 18px;
    background: linear-gradient(180deg, #c4a265, #a0845c);
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    box-shadow: 0 -2px 8px rgba(0,0,0,0.2);
}

.pdfteca-book-shelf img {
    width: 75%;
    height: auto;
    border-radius: 4px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.3), 0 0 0 5px #fff;
    position: relative;
    z-index: 1;
    transition: var(--transition);
}

.pdfteca-book-shelf:hover img {
    transform: translateY(-6px) scale(1.03);
    box-shadow: 0 14px 35px rgba(0,0,0,0.35), 0 0 0 5px #fff;
}

/* Post meta info */
.pdfteca-meta-list {
    list-style: none;
    padding: 0;
    margin: 0 0 24px;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    font-size: 14px;
    color: var(--color-text-light);
}

.pdfteca-meta-list li {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.pdfteca-meta-list li::after {
    content: '·';
    margin-left: 16px;
    color: var(--color-border);
}

.pdfteca-meta-list li:last-child::after {
    display: none;
}

.pdfteca-meta-list i {
    color: var(--color-primary);
    font-size: 16px;
}

/* Download button */
.pdfteca-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 48px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
    color: #fff;
    border-radius: 50px;
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(192,57,43,0.35);
}

.pdfteca-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(192,57,43,0.45);
    color: #fff;
}

/* PDF Reader */
.pdfteca-reader-wrapper {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin: 24px 0;
}

.pdfteca-reader-wrapper iframe {
    display: block;
    border: none;
}

/* DMCA button */
.pdfteca-dmca-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 24px;
    background: #e74c3c;
    color: #fff;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 3px 10px rgba(231,76,60,0.3);
}

.pdfteca-dmca-btn:hover {
    background: #c0392b;
    color: #fff;
    transform: translateY(-1px);
}

/* Footer moderno */
.site-footer {
    background: var(--color-secondary) !important;
    color: #ddd;
    padding: 40px 24px 20px;
}

.site-info {
    text-align: center;
    font-size: 14px;
    color: #aaa;
    max-width: 1280px;
    margin: 0 auto;
}

/* Content area */
.pdfteca-content {
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
    margin: 24px 0;
}

.pdfteca-content p {
    margin-bottom: 1.2em;
}

/* Related posts */
.pdfteca-related {
    margin-top: 48px;
}

/* Loading state */
.pdfteca-loading {
    text-align: center;
    padding: 40px;
}

.pdfteca-skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: skeleton 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

@keyframes skeleton {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Load more */
.pdfteca-load-more {
    text-align: center;
    margin-top: 32px;
}

.pdfteca-load-more button {
    padding: 14px 40px;
    background: var(--color-white);
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    border-radius: 50px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

.pdfteca-load-more button:hover {
    background: var(--color-primary);
    color: #fff;
}

/* Utilitarios */
.pdfteca-text-center { text-align: center; }
.pdfteca-mb-1 { margin-bottom: 8px; }
.pdfteca-mb-2 { margin-bottom: 16px; }
.pdfteca-mb-3 { margin-bottom: 24px; }
.pdfteca-mb-4 { margin-bottom: 32px; }
.pdfteca-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 40px 24px;
}

/* Print styles */
@media print {
    .site-header,
    .site-footer,
    .pdfteca-single-sidebar,
    .pdfteca-dmca-btn,
    .pdfteca-related { display: none !important; }
    .pdfteca-single-layout { grid-template-columns: 1fr; }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pdfteca-animate {
    animation: fadeInUp 0.5s ease-out;
}


/* =============================================
   FOOTER MODERNO
   ============================================= */

.pdfteca-footer {
    background: linear-gradient(180deg, #1a252f 0%, #2c3e50 100%);
    color: #ecf0f1;
    padding: 60px 24px 0;
    margin-top: 60px;
}

.pdfteca-footer-grid {
    max-width: 1280px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

@media (max-width: 768px) {
    .pdfteca-footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

.pdfteca-footer-logo {
    font-size: 24px;
    font-weight: 800;
    color: #e74c3c;
    margin: 0 0 12px;
    letter-spacing: -0.5px;
}

.pdfteca-footer-col h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 700;
    margin: 0 0 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.pdfteca-footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.pdfteca-footer-col ul li {
    margin-bottom: 8px;
}

.pdfteca-footer-col ul li a {
    color: #bdc3c7;
    font-size: 14px;
    transition: var(--transition-fast);
    text-decoration: none;
}

.pdfteca-footer-col ul li a:hover {
    color: #e74c3c;
    padding-left: 4px;
}

.pdfteca-footer-social {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.pdfteca-footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    font-size: 18px;
    text-decoration: none;
    transition: var(--transition);
}

.pdfteca-footer-social a:hover {
    background: var(--color-primary);
    transform: translateY(-2px);
}

.pdfteca-footer-bottom {
    max-width: 1280px;
    margin: 0 auto;
    padding: 20px 0;
    text-align: center;
}

.pdfteca-footer-bottom p {
    margin: 0;
    color: #7f8c8d;
    font-size: 13px;
}

/* =============================================
   PDF READER TOOLBAR
   ============================================= */

.pdfteca-reader-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #2c3e50;
    color: #fff;
    padding: 10px 16px;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
}

.pdfteca-reader-title {
    font-size: 14px;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 70%;
}

.pdfteca-reader-actions {
    display: flex;
    gap: 8px;
}

.pdfteca-reader-actions a,
.pdfteca-reader-actions button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    background: rgba(255,255,255,0.15);
    border: none;
    border-radius: 6px;
    color: #fff;
    cursor: pointer;
    transition: var(--transition-fast);
}

.pdfteca-reader-actions a:hover,
.pdfteca-reader-actions button:hover {
    background: rgba(255,255,255,0.3);
}

.pdfteca-reader-wrapper {
    background: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    margin: 24px 0;
}

.pdfteca-reader-wrapper iframe {
    display: block;
    border: none;
}

/* =============================================
   SIDEBAR WIDGETS ENHANCEMENT
   ============================================= */

.pdfteca-single-sidebar .widget {
    background: var(--color-white);
    border-radius: var(--radius-md);
    padding: 24px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.pdfteca-single-sidebar .widget h2,
.pdfteca-single-sidebar .widget-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-secondary);
    margin: 0 0 16px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary);
}

.pdfteca-single-sidebar .widget ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.pdfteca-single-sidebar .widget ul li {
    padding: 8px 0;
    border-bottom: 1px solid var(--color-border);
}

.pdfteca-single-sidebar .widget ul li:last-child {
    border-bottom: none;
}

.pdfteca-single-sidebar .widget ul li a {
    color: var(--color-secondary);
    font-size: 14px;
    transition: var(--transition-fast);
}

.pdfteca-single-sidebar .widget ul li a:hover {
    color: var(--color-primary);
}

/* Search form in sidebar */
.pdfteca-single-sidebar .search-form {
    display: flex;
    gap: 0;
}

.pdfteca-single-sidebar .search-form input[type="search"] {
    flex: 1;
    padding: 10px 14px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
    font-size: 14px;
    outline: none;
    transition: var(--transition-fast);
}

.pdfteca-single-sidebar .search-form input[type="search"]:focus {
    border-color: var(--color-primary);
}

.pdfteca-single-sidebar .search-form button {
    padding: 10px 16px;
    background: var(--color-primary);
    color: #fff;
    border: none;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    cursor: pointer;
    font-size: 14px;
}

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

@media (max-width: 900px) {
    .pdfteca-single-layout {
        grid-template-columns: 1fr;
        padding: 20px 16px;
        gap: 24px;
    }

    .pdfteca-single-sidebar {
        order: 10;
    }

    .pdfteca-reader-wrapper iframe {
        height: 50vh !important;
    }

    .pdfteca-hero {
        padding: 40px 16px 50px;
    }

    .pdfteca-hero h1 {
        font-size: 26px;
    }

    .pdfteca-hero-search {
        flex-direction: column;
        gap: 10px;
    }

    .pdfteca-hero-search button {
        width: 100%;
    }

    .pdfteca-book-shelf {
        max-width: 240px;
    }
}

@media (max-width: 640px) {
    .pdfteca-meta-list {
        flex-direction: column;
        gap: 8px;
        align-items: center;
    }

    .pdfteca-meta-list li::after {
        display: none;
    }

    .pdfteca-download-btn {
        padding: 12px 32px;
        font-size: 16px;
        width: 100%;
        justify-content: center;
    }

    .pdfteca-dmca-btn {
        width: 100%;
        justify-content: center;
    }
}

/* =============================================
   PRINT OPTIMIZATION
   ============================================= */

@media print {
    .site-header,
    .pdfteca-footer,
    .pdfteca-single-sidebar,
    .pdfteca-dmca-btn,
    .pdfteca-reader-toolbar,
    .pdfteca-related {
        display: none !important;
    }

    .pdfteca-single-layout {
        grid-template-columns: 1fr;
        padding: 0;
    }

    .pdfteca-download-btn {
        border: 2px solid #000;
        color: #000;
        background: none;
        box-shadow: none;
    }
}


/* =============================================
   PDF READER MODERNO (CLICK-TO-LOAD)
   ============================================= */

.pdfteca-reader-modern {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 24px rgba(0,0,0,0.08);
    margin: 32px 0;
    transition: box-shadow 0.3s ease;
}

.pdfteca-reader-modern:hover {
    box-shadow: 0 8px 40px rgba(0,0,0,0.12);
}

.pdfteca-reader-preview {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
}

@media (max-width: 500px) {
    .pdfteca-reader-preview {
        flex-direction: column;
        text-align: center;
    }
}

.pdfteca-reader-icon {
    width: 100px;
    height: 130px;
    flex-shrink: 0;
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.pdfteca-reader-info {
    flex: 1;
    min-width: 0;
}

.pdfteca-reader-filename {
    font-size: 16px;
    font-weight: 700;
    color: #2c3e50;
    margin: 0 0 6px;
    word-break: break-all;
}

.pdfteca-reader-hint {
    font-size: 14px;
    color: #95a5a6;
    margin: 0;
}

.pdfteca-reader-buttons {
    display: flex;
    gap: 12px;
    padding: 0 24px 24px;
}

@media (max-width: 500px) {
    .pdfteca-reader-buttons {
        flex-direction: column;
    }
}

.pdfteca-reader-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
    white-space: nowrap;
}

.pdfteca-reader-btn-primary {
    flex: 1;
    background: linear-gradient(135deg, #c0392b, #e74c3c);
    color: #fff;
    box-shadow: 0 4px 15px rgba(192,57,43,0.3);
}

.pdfteca-reader-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(192,57,43,0.4);
    color: #fff;
}

.pdfteca-reader-btn-secondary {
    flex: 1;
    background: #f8f9fa;
    color: #2c3e50;
    border: 2px solid #dee2e6;
}

.pdfteca-reader-btn-secondary:hover {
    background: #e9ecef;
    border-color: #c0392b;
    color: #c0392b;
    transform: translateY(-2px);
}

/* Viewer (when opened) */
.pdfteca-reader-viewer {
    border-top: 1px solid #ecf0f1;
}

.pdfteca-reader-viewer-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: #2c3e50;
    color: #fff;
    font-size: 13px;
}

.pdfteca-reader-btn-close {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 14px;
    background: rgba(255,255,255,0.15);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 13px;
    cursor: pointer;
    transition: background 0.2s;
}

.pdfteca-reader-btn-close:hover {
    background: rgba(255,255,255,0.3);
}

.pdfteca-reader-viewer iframe {
    display: block;
    background: #525659;
}

/* Mobile viewer */
@media (max-width: 768px) {
    .pdfteca-reader-viewer iframe {
        height: 60vh !important;
        min-height: 300px !important;
    }
    
    .pdfteca-reader-modern {
        margin: 20px 0;
        border-radius: 12px;
    }
}


/* =============================================
   PDF.JS READER - PAGE-BY-PAGE VIEWER
   ============================================= */

.pdf-reader-app {
    background: #1a1a2e;
    border-radius: 16px;
    overflow: hidden;
    margin: 32px 0;
    box-shadow: 0 8px 40px rgba(0,0,0,0.2);
    user-select: none;
    -webkit-user-select: none;
}

/* Toolbar */
.pr-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 14px;
    background: linear-gradient(180deg, #16213e 0%, #1a1a2e 100%);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    gap: 8px;
    flex-wrap: wrap;
}

.pr-toolbar-left,
.pr-toolbar-right {
    display: flex;
    align-items: center;
    gap: 6px;
}

.pr-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    background: rgba(255,255,255,0.1);
    color: #e0e0e0;
    border-radius: 8px;
    transition: all 0.2s;
    text-decoration: none;
    font-family: inherit;
}

.pr-btn:hover {
    background: rgba(255,255,255,0.2);
    color: #fff;
}

.pr-btn-icon {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: rgba(255,255,255,0.06);
    color: #c0c0c0;
}

.pr-btn-icon:hover {
    background: rgba(255,255,255,0.15);
    color: #fff;
    transform: scale(1.05);
}

.pr-btn-icon svg {
    transition: transform 0.2s;
}

.pr-btn-icon:hover svg {
    transform: scale(1.1);
}







@media (max-width: 500px) {
    
}

/* Page info */
.pr-page-info {
    display: flex;
    align-items: baseline;
    gap: 2px;
    font-family: 'SF Mono', 'Fira Code', 'Courier New', monospace;
    font-size: 15px;
    font-weight: 600;
    color: #e0e0e0;
    min-width: 60px;
    justify-content: center;
}

.pr-page-current { color: #e94560; font-size: 18px; }
.pr-page-sep { color: #555; margin: 0 2px; }
.pr-page-total { color: #888; }

/* Canvas area */
.pr-canvas-wrap {
    position: relative;
    min-height: 400px;
    background: #0f0f23;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    overflow: auto;
}

.pr-canvas-wrap canvas {
    display: block;
    max-width: 100%;
    height: auto;
    box-shadow: 0 4px 30px rgba(0,0,0,0.5);
    border-radius: 2px;
}

/* Loading */
.pr-loading {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: #0f0f23;
    color: #aaa;
    font-size: 14px;
    z-index: 5;
}

.pr-loading p { margin: 0; }

.pr-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(233,69,96,0.2);
    border-top-color: #e94560;
    border-radius: 50%;
    animation: pr-spin 0.8s linear infinite;
}

@keyframes pr-spin { to { transform: rotate(360deg); } }

/* Navigation arrows on sides */
.pr-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.15);
    background: rgba(22,33,62,0.85);
    color: #e0e0e0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
    transition: all 0.25s cubic-bezier(0.4,0,0.2,1);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.pr-nav:hover {
    background: rgba(233,69,96,0.75);
    border-color: rgba(233,69,96,0.5);
    color: #fff;
    transform: translateY(-50%) scale(1.08);
    box-shadow: 0 0 20px rgba(233,69,96,0.3);
}

.pr-nav-prev { left: 12px; }
.pr-nav-next { right: 12px; }

@media (max-width: 600px) {
    .pr-nav {
        width: 40px;
        height: 40px;
    }
    .pr-nav-prev { left: 6px; }
    .pr-nav-next { right: 6px; }
    .pr-canvas-wrap { padding: 12px; min-height: 300px; }
}

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

@media (max-width: 900px) {
    .pdfteca-single-layout {
        grid-template-columns: 1fr;
        padding: 20px 16px;
        gap: 24px;
    }

    .pdfteca-single-sidebar { order: 10; }

    .pdfteca-hero {
        padding: 40px 16px 50px;
    }

    .pdfteca-hero h1 { font-size: 26px; }

    .pdfteca-hero-search {
        flex-direction: column;
        gap: 10px;
    }

    .pdfteca-hero-search button { width: 100%; }

    .pdfteca-book-shelf { max-width: 240px; }

    .pr-toolbar {
        padding: 8px 12px;
    }
}

@media (max-width: 640px) {
    .pdfteca-meta-list {
        flex-direction: column;
        gap: 8px;
        align-items: center;
    }
    .pdfteca-meta-list li::after { display: none; }
    .pdfteca-download-btn {
        padding: 12px 32px;
        font-size: 16px;
        width: 100%;
        justify-content: center;
    }
    .pdfteca-dmca-btn {
        width: 100%;
        justify-content: center;
    }
}

/* Print */
@media print {
    .site-header, .pdfteca-footer, .pdfteca-single-sidebar,
    .pdfteca-dmca-btn, .pdf-reader-app, .pdfteca-related { display: none !important; }
    .pdfteca-single-layout { grid-template-columns: 1fr; padding: 0; }
    .pdfteca-download-btn { border: 2px solid #000; color: #000; background: none; box-shadow: none; }
}