/* ===========================================
   PORTCOM - CSS Principal
   Cores e estilos baseados no design original
   =========================================== */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,100..1000;1,9..40,100..1000&display=swap');

:root {
    /* Cores principais */
    --primary-blue-dark: #0c1f47;
    --primary-blue: #155ba0;
    --primary-blue-light: #0091d5;
    --primary-gradient: linear-gradient(135deg, #0c1f47 0%, #155ba0 50%, #0091d5 100%);
    --primary-gradient-reverse: linear-gradient(270deg, #0c1f47 0%, #155ba0 100%);
    
    /* Cores secundárias */
    --sidebar-bg: #f8f9fa;
    --sidebar-active: #155ba0;
    --text-dark: #1e293b;
    --text-medium: #475569;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --white: #ffffff;
    --background: #f8fafc;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Tamanhos */
    --header-height: 64px;
    --sidebar-width: 280px;
    
    /* Fontes */
    --font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Transições */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* ===========================================
   ANIMAÇÕES E KEYFRAMES
   =========================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease-out;
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

/* Stagger animations for cards */
.card-ebook,
.card-revista {
    animation: fadeInUp 0.6s ease-out backwards;
}

.card-ebook:nth-child(1),
.card-revista:nth-child(1) {
    animation-delay: 0.1s;
}

.card-ebook:nth-child(2),
.card-revista:nth-child(2) {
    animation-delay: 0.2s;
}

.card-ebook:nth-child(3),
.card-revista:nth-child(3) {
    animation-delay: 0.3s;
}

.card-ebook:nth-child(4),
.card-revista:nth-child(4) {
    animation-delay: 0.4s;
}

.card-ebook:nth-child(5),
.card-revista:nth-child(5) {
    animation-delay: 0.5s;
}

body {
    font-family: var(--font-family);
    background-color: var(--background);
    color: var(--text-dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===========================================
   HEADER
   =========================================== */
.header {
    position: sticky;
    top: 0;
    z-index: 50;
    width: 100%;
    height: var(--header-height);
    background: var(--primary-gradient);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    backdrop-filter: blur(8px);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: 1920px;
    margin: 0 auto;
    padding: 0 2rem;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.header-logo-img {
    height: 36px;
    object-fit: contain;
    filter: brightness(0) invert(1);
    transition: transform var(--transition-base);
}

.header-logo:hover .header-logo-img {
    transform: scale(1.05);
}

.header-nav {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-nav-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.125rem;
    color: rgba(255, 255, 255, 0.95);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

.header-nav-btn:hover {
    background-color: rgba(255, 255, 255, 0.12);
    color: var(--white);
    transform: translateY(-1px);
}

.header-lang-btn {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius);
    color: var(--white);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.header-lang-btn:hover {
    background: rgba(255, 255, 255, 0.18);
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-1px);
}

.mobile-menu-btn {
    display: none;
    padding: 0.625rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius);
    color: var(--white);
    cursor: pointer;
    transition: all var(--transition-base);
}

.mobile-menu-btn:hover {
    background: rgba(255, 255, 255, 0.18);
}

/* ===========================================
   LAYOUT PRINCIPAL
   =========================================== */
.main-layout {
    display: flex;
    min-height: calc(100vh - var(--header-height));
}

/* ===========================================
   SIDEBAR
   =========================================== */
.sidebar {
    width: var(--sidebar-width);
    min-height: calc(100vh - var(--header-height));
    background: var(--white);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    flex-shrink: 0;
    box-shadow: 4px 0 12px rgba(0, 0, 0, 0.02);
}

/* Scrollbar elegante */
.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

.sidebar-nav {
    padding: 1rem 0.75rem;
}

.sidebar-item {
    margin-bottom: 0.375rem;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-dark);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: 0.625rem;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.sidebar-link:hover {
    background: rgba(21, 91, 160, 0.08);
    color: var(--primary-blue);
    transform: translateX(4px);
}

.sidebar-link.active {
    background: rgba(21, 91, 160, 0.08);
    color: var(--primary-blue);
    font-weight: 600;
}

.sidebar-link i {
    width: 1.25rem;
    text-align: center;
    font-size: 1rem;
    transition: transform 0.2s ease;
}

.sidebar-link:hover i {
    transform: scale(1.1);
}

.sidebar-link .chevron {
    margin-left: auto;
    font-size: 0.75rem;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.sidebar-link[aria-expanded="true"] .chevron {
    transform: rotate(180deg);
}

.sidebar-submenu .sidebar-link[aria-expanded="true"] .fa-chevron-right {
    transform: rotate(90deg);
}

.sidebar-submenu {
    padding-left: 0.5rem;
    overflow: hidden;
    max-height: 2000px;
    opacity: 1;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1), 
                opacity 0.4s ease,
                padding 0.4s ease,
                margin 0.4s ease;
    background: var(--white);
    margin-left: 1rem;
    margin-top: 0.5rem;
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

/* Tracinho azul somente no submenu de nível 1 */
.sidebar-nav > .sidebar-item > .sidebar-submenu {
    border-left: 3px solid var(--primary-blue);
}

.sidebar-submenu.collapsed {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
    margin-top: 0;
    margin-bottom: 0;
}

.sidebar-submenu .sidebar-link {
    padding-left: 2rem;
    font-weight: 500;
    font-size: 0.875rem;
}

.sidebar-submenu .sidebar-link:hover {
    background: rgba(21, 91, 160, 0.06);
}

.sidebar-subitem {
    padding-left: 1rem;
}

.sidebar-subitem .sidebar-link {
    font-size: 0.8125rem;
    padding: 0.625rem 1rem;
    font-weight: 400;
}

/* ===========================================
   CONTEÚDO PRINCIPAL
   =========================================== */
.main-content {
    flex: 1;
    padding: 3rem 2rem;
    overflow-x: hidden;
    background: linear-gradient(180deg, rgba(248, 250, 252, 0) 0%, rgba(241, 245, 249, 0.4) 100%);
}

.content-center {
    max-width: 1280px;
    margin: 0 auto;
}

/* ===========================================
   LOGO PORTCOM
   =========================================== */
.portcom-header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
}

.portcom-logo {
    max-height: 90px;
    margin-bottom: 1rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.05));
}

.portcom-tagline {
    color: var(--text-medium);
    font-size: 1.0625rem;
    font-weight: 500;
    line-height: 1.5;
    max-width: 600px;
    margin: 0 auto;
}

/* ===========================================
   BARRA DE BUSCA
   =========================================== */
.search-container {
    max-width: 800px;
    margin: 0 auto 2.5rem;
}

.search-box {
    display: flex;
    align-items: center;
    background: var(--white);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 0.5rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-slow);
}

.search-box:focus-within {
    border-color: var(--primary-blue);
    box-shadow: 0 20px 25px -5px rgba(21, 91, 160, 0.1), 0 10px 10px -5px rgba(21, 91, 160, 0.04);
    transform: translateY(-2px);
}

.search-box .search-icon {
    padding: 0 1rem;
    color: var(--text-muted);
    font-size: 1.125rem;
}

.search-box input {
    flex: 1;
    padding: 1rem 0.5rem;
    border: none;
    outline: none;
    font-size: 1.0625rem;
    font-weight: 400;
    background: transparent;
    color: var(--text-dark);
}

.search-box input::placeholder {
    color: var(--text-light);
}

.btn-search {
    padding: 1rem 2rem;
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: 0 4px 6px -1px rgba(21, 91, 160, 0.3);
    letter-spacing: 0.3px;
}

.btn-search:hover {
    background: var(--primary-blue-dark);
    box-shadow: 0 10px 15px -3px rgba(21, 91, 160, 0.4);
    transform: translateY(-2px);
}

.btn-search:active {
    transform: translateY(0);
}

.search-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-top: 1.25rem;
}

.search-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-medium);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    transition: all var(--transition-base);
}

.search-link:hover {
    color: var(--primary-blue);
}

.search-link i {
    font-size: 0.875rem;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-ai {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.75rem 1.5rem;
    background: linear-gradient(135deg, var(--primary-blue-light) 0%, #007bb5 100%);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-slow);
    box-shadow: 0 4px 6px -1px rgba(0, 145, 213, 0.3);
}

.btn-ai:hover {
    background: linear-gradient(135deg, #007bb5 0%, #005a8a 100%);
    box-shadow: 0 10px 15px -3px rgba(0, 145, 213, 0.4);
    transform: translateY(-2px);
    color: var(--white);
}

.btn-ai i {
    font-size: 1rem;
}

/* ===========================================
   BUSCA AVANÇADA
   =========================================== */
.advanced-search {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 3rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.advanced-search-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    background: #f1f5f9;
    padding: 0.375rem;
    border-radius: 0.75rem;
}

.tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.625rem 1.25rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.tab-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transform: translateX(-50%);
    transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.tab-btn:hover {
    color: var(--primary-blue);
    background: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.tab-btn.active {
    background: var(--white);
    border-color: transparent;
    color: var(--primary-blue);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.tab-btn.active::after {
    width: 60%;
}

.tab-btn i {
    font-size: 1rem;
    transition: transform 0.3s ease;
}

.tab-btn:hover i {
    transform: scale(1.1);
}

.tab-content {
    display: none;
    opacity: 0;
    transform: translateX(20px);
}

.tab-content.active {
    display: block;
    animation: slideInFade 0.5s ease-out forwards;
}

@keyframes slideInFade {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-dark);
    letter-spacing: 0.3px;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background: #f8fafc;
    border: 2px solid transparent;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-dark);
    transition: all var(--transition-base);
}

.form-control::placeholder {
    color: var(--text-light);
}

.form-control:focus {
    outline: none;
    background: var(--white);
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 4px rgba(21, 91, 160, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.75rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.625rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-base);
    letter-spacing: 0.3px;
}

.btn i {
    font-size: 0.875rem;
}

.btn-primary {
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    box-shadow: 0 4px 6px -1px rgba(21, 91, 160, 0.3);
}

.btn-primary:hover {
    background: var(--primary-blue-dark);
    box-shadow: 0 10px 15px -3px rgba(21, 91, 160, 0.4);
    transform: translateY(-2px);
}

.btn-outline {
    background: var(--white);
    color: var(--text-medium);
    border: 2px solid var(--border-color);
}

.btn-outline:hover {
    background: #f1f5f9;
    border-color: var(--text-medium);
    color: var(--text-dark);
}

/* ===========================================
   SEÇÕES DE CONTEÚDO
   =========================================== */
.section {
    margin-bottom: 4rem;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-light);
}

.section-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    letter-spacing: -0.5px;
}

.section-title i {
    font-size: 1.375rem;
    color: var(--primary-blue);
}

.section-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-blue);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 600;
    transition: all var(--transition-base);
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    background: transparent;
}

.section-link:hover {
    background: rgba(21, 91, 160, 0.08);
    transform: translateX(4px);
}

.section-link i {
    font-size: 0.875rem;
    transition: transform var(--transition-base);
}

.section-link:hover i {
    transform: translateX(4px);
}

/* ===========================================
   CARDS DE E-BOOKS E REVISTAS
   =========================================== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
    padding: 1rem 0;
}

.card-ebook {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition-slow);
    border: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
}

.card-ebook::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-slow);
}

.card-ebook:hover::before {
    transform: scaleX(1);
}

.card-ebook:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-blue-light);
}

.card-ebook-cover {
    position: relative;
    aspect-ratio: 3/4;
    overflow: hidden;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.card-ebook-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-ebook:hover .card-ebook-cover img {
    transform: scale(1.08);
}

.card-ebook-body {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--white);
}

.card-ebook-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1.25rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 4.5rem;
}

.card-ebook-btn {
    margin-top: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.625rem;
    padding: 0.75rem 1rem;
    background: rgba(21, 91, 160, 0.05);
    border: 1px solid transparent;
    border-radius: var(--radius);
    color: var(--primary-blue);
    font-size: 0.9375rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    transition: all var(--transition-base);
}

.card-ebook-btn:hover {
    background: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
    box-shadow: 0 4px 12px rgba(21, 91, 160, 0.2);
}

.card-ebook-btn i {
    font-size: 0.875rem;
    transition: transform var(--transition-base);
}

.card-ebook-btn:hover i {
    transform: translateX(4px);
}

/* Cards de Revistas */
.card-revista {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all var(--transition-slow);
    border: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    position: relative;
}

.card-revista::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-slow);
}

.card-revista:hover::before {
    transform: scaleX(1);
}

.card-revista:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-blue-light);
}

.card-revista-cover {
    aspect-ratio: 3/4;
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

.card-revista-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(0deg, rgba(0,0,0,0.4) 0%, transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.card-revista:hover .card-revista-cover::after {
    opacity: 1;
}

.card-revista-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-revista:hover .card-revista-cover img {
    transform: scale(1.08);
}

.card-revista-body {
    padding: 1.5rem;
    text-align: center;
    background: var(--white);
}

.card-revista-title {
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 1.25rem;
    line-height: 1.4;
}

.card-revista-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    background: rgba(21, 91, 160, 0.05);
    border: 1px solid transparent;
    border-radius: var(--radius);
    color: var(--primary-blue);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
}

.card-revista-btn:hover {
    background: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
    box-shadow: 0 4px 12px rgba(21, 91, 160, 0.2);
}

/* ===========================================
   PÁGINA DE CONGRESSO / LISTAGEM
   =========================================== */
.page-header {
    margin-bottom: 1.5rem;
}

/* Card branco para conteúdo (ex: página Sobre) — ocupa a coluna, sombra suave */
.page-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-light);
    padding: 2rem;
    margin-bottom: 2rem;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.page-subtitle {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

/* Conteúdo rico (editor WYSIWYG - ex: página Sobre) */
.content-prose p {
    margin-bottom: 1rem;
    line-height: 1.6;
    color: var(--text-dark);
}

.content-prose p:last-child {
    margin-bottom: 0;
}

.content-prose h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.content-prose h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
}

.content-prose ul,
.content-prose ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.content-prose li {
    margin-bottom: 0.25rem;
    line-height: 1.6;
}

.content-prose strong {
    font-weight: 600;
}

.content-prose a {
    color: var(--primary-blue);
    text-decoration: none;
}

.content-prose a:hover {
    text-decoration: underline;
}

.content-prose img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius);
}

.filter-box {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.results-count {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

/* ===========================================
   LISTA DE ARTIGOS
   =========================================== */
.article-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.article-card {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1.25rem;
    transition: box-shadow 0.2s;
}

.article-card:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.article-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.625rem;
    background: var(--primary-blue);
    color: var(--white);
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 500;
}

.article-event {
    color: var(--text-muted);
    font-size: 0.8125rem;
}

.article-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.375rem;
    line-height: 1.4;
}

.article-title a {
    color: inherit;
    text-decoration: none;
}

.article-title a:hover {
    color: var(--primary-blue);
}

.article-authors {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
}

.article-actions {
    display: flex;
    gap: 0.5rem;
}

.article-category {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    background: rgba(21, 91, 160, 0.1);
    color: var(--primary-blue);
    border-radius: 0.25rem;
    font-size: 0.75rem;
    margin-bottom: 0.5rem;
}

/* ===========================================
   PÁGINA INDIVIDUAL DE ARTIGO
   =========================================== */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-dark);
    text-decoration: none;
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

.back-link:hover {
    color: var(--primary-blue);
}

.article-detail {
    max-width: 900px;
}

.article-detail-category {
    display: inline-block;
    padding: 0.375rem 0.75rem;
    background: rgba(21, 91, 160, 0.1);
    color: var(--primary-blue);
    border-radius: 0.375rem;
    font-size: 0.8125rem;
    margin-bottom: 1rem;
}

.article-detail-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.3;
    margin-bottom: 1rem;
}

.article-detail-authors {
    color: var(--primary-blue);
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

.article-detail-info {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    padding: 1.25rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.article-detail-info-item {
    text-align: left;
}

.article-detail-info-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.article-detail-info-value {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-dark);
}

/* ===========================================
   PÁGINA DE E-BOOK
   =========================================== */
.ebook-detail {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 2rem;
    max-width: 1000px;
}

.ebook-cover {
    background: var(--white);
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.ebook-cover img {
    width: 100%;
    height: auto;
}

.ebook-cover-actions {
    padding: 1rem;
}

.ebook-info {
    padding-top: 0.5rem;
}

.ebook-title-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.ebook-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.ebook-authors-label {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-bottom: 0.25rem;
}

.ebook-authors {
    font-size: 1rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.ebook-badges {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.ebook-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.375rem 0.75rem;
    background: var(--primary-blue);
    color: var(--white);
    border-radius: 0.375rem;
    font-size: 0.8125rem;
    font-weight: 500;
}

.ebook-resumo h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.ebook-resumo p {
    font-size: 0.9375rem;
    color: var(--text-dark);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.ebook-meta {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.ebook-meta-item label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 0.125rem;
}

.ebook-meta-item span {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-dark);
}

/* ===========================================
   BUSCA IA
   =========================================== */
.ai-search-container {
    max-width: 900px;
    margin: 0 auto;
}

.ai-search-header {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.ai-search-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
}

.ai-search-subtitle {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

.ai-search-box {
    margin-bottom: 1.5rem;
}

.ai-search-box textarea {
    width: 100%;
    min-height: 120px;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    font-family: var(--font-family);
    font-size: 0.9375rem;
    resize: vertical;
}

.ai-search-box textarea:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(21, 91, 160, 0.1);
}

.ai-search-hint {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
}

.ai-response {
    background: rgba(21, 91, 160, 0.05);
    border: 1px solid rgba(21, 91, 160, 0.2);
    border-radius: 0.5rem;
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.ai-response-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
    color: var(--primary-blue);
    font-weight: 500;
}

.ai-response p {
    font-size: 0.9375rem;
    line-height: 1.6;
    color: var(--text-dark);
}

.ai-result-reason {
    background: rgba(21, 91, 160, 0.05);
    border-left: 3px solid var(--primary-blue);
    padding: 0.75rem 1rem;
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: var(--text-dark);
}

.ai-result-reason strong {
    color: var(--primary-blue);
}

/* ===========================================
   PAGINAÇÃO
   =========================================== */
.pagination {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    margin-top: 2rem;
}

.pagination-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 0.5rem;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    color: var(--text-dark);
    font-size: 0.875rem;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
}

.pagination-btn:hover {
    background: var(--sidebar-bg);
}

.pagination-btn.active {
    background: var(--primary-blue);
    border-color: var(--primary-blue);
    color: var(--white);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===========================================
   FOOTER
   =========================================== */
.footer {
    width: 100%;
    padding: 2rem 1.5rem;
    background: var(--primary-gradient-reverse);
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 4rem;
}

.footer p {
    color: rgba(255, 255, 255, 0.95);
    font-size: 0.9375rem;
    font-weight: 500;
    margin: 0;
}

/* ===========================================
   RESPONSIVIDADE
   =========================================== */
@media (max-width: 1280px) {
    .content-center {
        max-width: 1024px;
    }
    
    .cards-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 1024px) {
    .header-container {
        padding: 0 1.5rem;
    }
    
    .cards-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.25rem;
    }
    
    .ebook-detail {
        grid-template-columns: 200px 1fr;
    }
    
    .article-detail-info {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .section {
        margin-bottom: 3rem;
    }
    
    .section-header {
        margin-bottom: 1.5rem;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 56px;
    }
    
    .header-container {
        padding: 0 1rem;
    }
    
    .sidebar {
        position: fixed;
        left: -100%;
        top: var(--header-height);
        height: calc(100vh - var(--header-height));
        z-index: 40;
        transition: left var(--transition-slow);
        box-shadow: var(--shadow-xl);
    }
    
    .sidebar.open {
        left: 0;
    }
    
    .sidebar-overlay {
        display: none;
        position: fixed;
        inset: 0;
        top: var(--header-height);
        background: rgba(0, 0, 0, 0.5);
        z-index: 35;
        backdrop-filter: blur(2px);
        animation: fadeIn 0.3s ease;
    }
    
    .sidebar-overlay.open {
        display: block;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .header-nav {
        display: none;
    }
    
    .main-content {
        padding: 2rem 1rem;
    }
    
    .portcom-header {
        padding: 1rem 0;
        margin-bottom: 2rem;
    }
    
    .portcom-logo {
        max-height: 70px;
    }
    
    .portcom-tagline {
        font-size: 0.9375rem;
    }
    
    .search-container {
        margin-bottom: 2rem;
    }
    
    .search-box {
        flex-direction: column;
        padding: 0.75rem;
    }
    
    .search-box .search-icon {
        display: none;
    }
    
    .search-box input {
        width: 100%;
        padding: 0.875rem;
        text-align: center;
    }
    
    .btn-search {
        width: 100%;
        padding: 0.875rem;
    }
    
    .search-links {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .advanced-search {
        padding: 1.25rem;
    }
    
    .advanced-search-tabs {
        gap: 0.375rem;
    }
    
    .tab-btn {
        font-size: 0.8125rem;
        padding: 0.5rem 0.875rem;
    }
    
    .section {
        margin-bottom: 2.5rem;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .section-title {
        font-size: 1.25rem;
    }
    
    .ebook-detail {
        grid-template-columns: 1fr;
    }
    
    .ebook-cover {
        max-width: 250px;
        margin: 0 auto;
    }
    
    .cards-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.25rem;
    }
    
    .article-detail-info {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .portcom-header {
        margin-bottom: 1.5rem;
    }
    
    .portcom-tagline {
        font-size: 0.875rem;
    }
    
    .search-box input {
        font-size: 0.9375rem;
    }
    
    .cards-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .card-ebook,
    .card-revista {
        max-width: 280px;
        margin: 0 auto;
        width: 100%;
    }
    
    .search-links {
        flex-direction: column;
        align-items: stretch;
    }
    
    .btn-ai {
        width: 100%;
        justify-content: center;
    }
    
    .section-title {
        font-size: 1.125rem;
    }
    
    .article-detail-info {
        grid-template-columns: 1fr;
    }
    
    .ebook-meta {
        grid-template-columns: 1fr;
    }
    
    .advanced-search-tabs {
        flex-direction: column;
    }
    
    .tab-btn {
        width: 100%;
        justify-content: center;
    }
    
    .form-label {
        font-size: 0.8125rem;
    }
    
    .form-control {
        font-size: 0.9375rem;
    }
}