/* ========================================
   BASE DE CONHECIMENTO - DESIGN SYSTEM
   Paleta: #ECA00C, #FFBD59, #ECECEC, #27282A
   ======================================== */

/* CSS Custom Properties */
:root {
    --color-primary: #ECA00C;
    --color-primary-light: #FFBD59;
    --color-primary-soft: #f0b33d;
    --color-primary-pale: #f6d086;
    --color-primary-bg: #fef8ec;

    --color-dark: #27282A;
    --color-dark-soft: #525355;
    --color-dark-muted: #838485;

    --color-neutral: #ECECEC;
    --color-neutral-warm: #fcf5ed;
    --color-surface: #ffffff;
    --color-bg: #f7f5f2;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --shadow-sm: 0 1px 3px rgba(39, 40, 42, 0.06);
    --shadow-md: 0 4px 12px rgba(39, 40, 42, 0.08);
    --shadow-lg: 0 8px 24px rgba(39, 40, 42, 0.10);
    --shadow-hover: 0 8px 28px rgba(236, 160, 12, 0.15);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 50px;

    --transition: 180ms ease;
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

/* ========================================
   HEADER — Floating Glass
   ======================================== */
.glass-header {
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    padding: 14px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.02);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: all 0.3s ease;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 42px;
    width: auto;
    display: block;
}

/* Nav Button (Top Right) */
.nav-button {
    background-color: var(--color-primary);
    color: var(--color-surface);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    padding: 10px 22px;
    border-radius: var(--radius-full);
    border: 1px solid var(--color-primary);
    transition: all var(--transition);
}

.nav-button:hover {
    background-color: var(--color-primary-soft);
    color: var(--color-surface);
    border-color: var(--color-primary-soft);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(236, 160, 12, 0.2);
}

/* Hidden legacy logo styles */
.logo-text,
.logo-text span,
.logo-text .sistema,
.logo-text .catedral,
.logo-icon,
.logo-icon svg {
    display: none;
}

/* ========================================
   HERO / SEARCH — Modern Light + Soft Glass
   ======================================== */
.search-container {
    background-color: #f5f6f8;
    background-image:
        radial-gradient(at 0% 0%, rgba(236, 160, 12, 0.04) 0px, transparent 60%),
        radial-gradient(at 100% 100%, #ffffff 0px, transparent 50%);
    padding: 72px 24px;
    text-align: center;
    position: relative;
    z-index: 50;
    border-bottom: 1px solid rgba(0, 0, 0, 0.03);
}

/* Subtle ambient glow behind search area */
.search-container::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(236, 160, 12, 0.08) 0%, rgba(236, 160, 12, 0.02) 40%, transparent 60%);
    pointer-events: none;
    z-index: -1;
}

.search-container .hero-title {
    color: var(--color-dark);
    font-size: 38px;
    font-weight: 800;
    margin-bottom: 12px;
    letter-spacing: -1px;
    position: relative;
}

.search-container .hero-subtitle {
    color: var(--color-dark-muted);
    font-size: 18px;
    font-weight: 400;
    margin-bottom: 40px;
    position: relative;
}

/* Soft Light Liquid Glass Search Box */
.search-box {
    position: relative;
    width: 100%;
    max-width: 680px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 10px;
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.9);
    box-shadow: 0 8px 32px rgba(39, 40, 42, 0.04), 0 1px 2px rgba(39, 40, 42, 0.02);
    border-radius: var(--radius-full);
    padding: 8px;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.search-box:hover {
    box-shadow: 0 12px 40px rgba(39, 40, 42, 0.06), 0 1px 3px rgba(39, 40, 42, 0.03);
    transform: translateY(-2px);
}

.search-box:focus-within {
    border-color: var(--color-primary-light);
    box-shadow: 0 0 0 4px rgba(236, 160, 12, 0.15), 0 12px 40px rgba(39, 40, 42, 0.08);
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.95);
}

#search-input {
    flex: 1;
    padding: 12px 20px;
    border: none;
    border-radius: var(--radius-full);
    font-size: 16px;
    font-family: var(--font-family);
    outline: none;
    background: transparent;
    color: var(--color-dark);
}

#search-input::placeholder {
    color: var(--color-dark-muted);
}

#search-button {
    padding: 12px;
    background-color: transparent;
    color: var(--color-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition), transform var(--transition), color var(--transition);
}

#search-button:hover {
    background-color: var(--color-primary-bg);
    transform: scale(1.05);
}

/* ========================================
   SEARCH RESULTS — Dropdown
   ======================================== */
.search-results-container {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    width: 100%;
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    z-index: 2000;
    max-height: 480px;
    overflow-y: auto;
    display: none;
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.search-box .search-results-container {
    top: calc(100% + 8px);
    left: 0;
    width: 100%;
}

.search-bar .search-results-container {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    width: 100%;
}

.search-bar {
    position: relative;
}

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

.search-results-list li {
    padding: 0;
    border-bottom: 1px solid var(--color-neutral);
}

.search-results-list li:last-child {
    border-bottom: none;
}

.search-results-list a {
    display: block;
    padding: 14px 18px;
    color: var(--color-dark);
    text-decoration: none;
    transition: background-color var(--transition);
    font-size: 14px;
}

.search-results-list a:hover {
    background-color: var(--color-primary-bg);
}

.search-results-list i {
    margin-right: 10px;
    color: var(--color-primary);
}

.search-results-list .highlight {
    background-color: var(--color-primary-pale);
    font-weight: 600;
    padding: 2px 4px;
    border-radius: 3px;
}

.no-results {
    padding: 20px;
    text-align: center;
    color: var(--color-dark-muted);
    font-style: italic;
    font-size: 14px;
}

/* ========================================
   CONTENT LAYOUT
   ======================================== */
.content-container {
    max-width: 1200px;
    margin: 36px auto;
    display: flex;
    gap: 28px;
    padding: 0 24px;
}

.main-content {
    flex: 3;
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 32px;
}

.main-content h2 {
    margin-bottom: 8px;
    font-size: 24px;
    font-weight: 700;
    color: var(--color-dark);
    letter-spacing: -0.3px;
}

/* ========================================
   TOPIC CARDS — Modern Grid
   ======================================== */
.topics-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-top: 20px;
}

.topic-item {
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 28px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    cursor: pointer;
    transition: transform var(--transition), box-shadow var(--transition);
    height: 100%;
    min-height: 180px;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--color-neutral);
}

.topic-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
    border-color: var(--color-primary-light);
}

.topic-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--color-primary);
    border-radius: 0 4px 4px 0;
    opacity: 0;
    transition: opacity var(--transition);
}

.topic-item:hover::before {
    opacity: 1;
}

.topic-icon {
    width: 64px;
    height: 64px;
    min-width: 64px;
    background-color: var(--color-primary-bg);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 26px;
    color: var(--color-primary);
    transition: background-color var(--transition), transform var(--transition);
}

.topic-item:hover .topic-icon {
    background-color: var(--color-primary);
    color: var(--color-surface);
    transform: scale(1.05);
}

.topic-text {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-dark);
    margin-top: 4px;
    line-height: 1.4;
}

.topic-article-count {
    font-size: 12px;
    color: var(--color-dark-muted);
    margin-top: 10px;
    background-color: var(--color-neutral);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    display: inline-block;
    font-weight: 500;
}

/* ========================================
   TOPIC SEARCH FILTER
   ======================================== */
.topic-search-container {
    margin: 20px 0 4px;
}

.topic-search-box {
    display: flex;
    background-color: var(--color-surface);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    border: 1px solid var(--color-neutral);
    transition: border-color var(--transition);
}

.topic-search-box:focus-within {
    border-color: var(--color-primary);
}

#topic-search-input {
    flex: 1;
    padding: 12px 16px;
    border: none;
    outline: none;
    font-size: 14px;
    font-family: var(--font-family);
    color: var(--color-dark);
    background: transparent;
}

#topic-search-input::placeholder {
    color: var(--color-dark-muted);
}

#topic-search-clear {
    background: none;
    border: none;
    padding: 0 14px;
    cursor: pointer;
    color: var(--color-dark-muted);
    font-size: 14px;
    transition: color var(--transition);
}

#topic-search-clear:hover {
    color: var(--color-primary);
}

.no-topics-found {
    text-align: center;
    padding: 24px;
    background-color: var(--color-surface);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    color: var(--color-dark-muted);
    font-style: italic;
    font-size: 14px;
    grid-column: 1 / -1;
}

/* ========================================
   SIDEBAR
   ======================================== */
.sidebar {
    flex: 1;
    background-color: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 28px;
    height: fit-content;
    position: sticky;
    top: 96px;
}

.sidebar-section {
    margin-bottom: 32px;
}

.sidebar-section:last-child {
    margin-bottom: 0;
}

.sidebar-section h3 {
    margin-bottom: 16px;
    font-size: 16px;
    font-weight: 700;
    color: var(--color-dark);
    padding-bottom: 12px;
    border-bottom: 2px solid var(--color-primary);
    letter-spacing: -0.2px;
}

.sidebar-section ul {
    padding-left: 0;
    list-style: none;
}

.sidebar-section li {
    margin-bottom: 4px;
}

.sidebar-section a {
    display: block;
    padding: 10px 12px;
    color: var(--color-dark-soft);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition), color var(--transition);
    font-size: 14px;
}

.sidebar-section a:hover {
    background-color: var(--color-primary-bg);
    color: var(--color-primary);
}

.sidebar-section a.active {
    background-color: var(--color-primary-bg);
    color: var(--color-primary);
    font-weight: 600;
}

.sidebar-section a i {
    margin-right: 10px;
    width: 16px;
    text-align: center;
}

#topics-sidebar-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

#topics-sidebar-list a {
    padding: 10px 12px;
    line-height: 1.4;
    font-size: 14px;
}

#related-articles {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

#related-articles a {
    padding: 10px 12px;
    line-height: 1.4;
    font-size: 14px;
}

/* Popular Articles */
.popular-articles {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding-left: 0;
}

.popular-articles li {
    margin-bottom: 0;
    display: flex;
    align-items: flex-start;
    padding: 8px 10px;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition);
}

.popular-articles li:hover {
    background-color: var(--color-primary-bg);
}

.popular-articles li i {
    color: var(--color-primary);
    margin-top: 2px;
    font-size: 13px;
    flex-shrink: 0;
}

.popular-articles a {
    color: var(--color-dark-soft);
    text-decoration: none;
    font-size: 14px;
    line-height: 1.4;
    margin-left: 8px;
    transition: color var(--transition);
}

.popular-articles a:hover {
    color: var(--color-primary);
}

/* Sidebar contact & CTA */
.sidebar-section p {
    margin-bottom: 16px;
    font-size: 14px;
    color: var(--color-dark-muted);
    line-height: 1.5;
}

#contact-button {
    display: block;
    width: 100%;
    padding: 12px 20px;
    background-color: var(--color-primary);
    color: var(--color-surface);
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    font-family: var(--font-family);
    margin-bottom: 16px;
    text-align: center;
    transition: background-color var(--transition), transform var(--transition);
}

#contact-button:hover {
    background-color: var(--color-primary-soft);
    transform: translateY(-1px);
}

/* Admin login link */
.admin-login-link {
    text-align: center;
}

.admin-login-link a {
    display: block;
    width: 100%;
    padding: 10px 14px;
    background-color: var(--color-bg);
    border-radius: var(--radius-sm);
    color: var(--color-dark-muted);
    text-decoration: none;
    transition: all var(--transition);
    font-size: 13px;
    text-align: center;
    border: 1px solid var(--color-neutral);
}

.admin-login-link a:hover {
    background-color: var(--color-dark);
    color: var(--color-surface);
    border-color: var(--color-dark);
}

.admin-login-link a i {
    margin-right: 6px;
    color: var(--color-primary);
    transition: color var(--transition);
}

.admin-login-link a:hover i {
    color: var(--color-surface);
}

/* ========================================
   FOOTER — Dark Premium
   ======================================== */
footer {
    background-color: var(--color-dark);
    color: var(--color-dark-muted);
    text-align: center;
    padding: 20px 0;
    margin-top: 48px;
    font-size: 13px;
}

/* ========================================
   ARTICLES PAGE
   ======================================== */
.topic-header {
    display: flex;
    align-items: center;
    margin-bottom: 24px;
    gap: 16px;
}

.back-button {
    display: inline-flex;
    align-items: center;
    color: var(--color-dark-muted);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: color var(--transition);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
    background-color: var(--color-bg);
    border: 1px solid var(--color-neutral);
}

.back-button:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
    background-color: var(--color-primary-bg);
}

.back-button i {
    margin-right: 6px;
}

.articles-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.article-item {
    background-color: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    padding: 22px;
    transition: transform var(--transition), box-shadow var(--transition);
    border: 1px solid var(--color-neutral);
    border-left: 4px solid var(--color-primary);
}

.article-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.article-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-dark);
    margin-bottom: 8px;
}

.article-description {
    font-size: 14px;
    color: var(--color-dark-muted);
    margin-bottom: 12px;
    line-height: 1.5;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--color-dark-muted);
}

.article-date {
    display: flex;
    align-items: center;
}

.article-date i {
    margin-right: 5px;
    color: var(--color-primary);
}

.article-read-more {
    display: inline-flex;
    align-items: center;
    color: var(--color-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 13px;
    transition: color var(--transition);
}

.article-read-more:hover {
    color: var(--color-primary-soft);
}

.article-read-more i {
    margin-left: 5px;
    font-size: 10px;
}

/* ========================================
   RESPONSIVE — Tablet
   ======================================== */
@media (max-width: 992px) {
    .topics-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .search-container .hero-title {
        font-size: 26px;
    }
}

/* ========================================
   RESPONSIVE — Mobile Landscape
   ======================================== */
@media (max-width: 900px) {
    .content-container {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        position: static;
    }

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

/* ========================================
   RESPONSIVE — Mobile
   ======================================== */
@media (max-width: 768px) {
    .topics-container {
        grid-template-columns: 1fr;
    }

    .search-container {
        padding: 32px 16px;
    }

    .search-container .hero-title {
        font-size: 22px;
    }

    .search-container .hero-subtitle {
        font-size: 14px;
    }

    .main-content {
        padding: 20px;
    }

    .sidebar {
        padding: 20px;
    }
}

@media (max-width: 600px) {
    .search-box {
        flex-direction: column;
    }

    #search-input {
        width: 100%;
    }

    #search-button {
        margin-top: 8px;
        width: 100%;
        justify-content: center;
    }

    .logo img {
        height: 36px;
    }

    .content-container {
        padding: 0 12px;
        margin: 20px auto;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-up {
    animation: fadeUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
}