/* RESET E VARIÁVEIS */
:root {
    --primary-color: #c46a2b;
    --text-color: #333333;
    --text-light: #666666;
    --bg-color: #f7f7f5;
    --border-color: #e5e5e0;
    --font-serif: 'Playfair Display', 'Cinzel', serif;
    --font-sans: 'Inter', 'Open Sans', sans-serif;
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition);
}

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

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

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 30px 40px;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: none;
}

.header-left, .header-right {
    flex: 1;
    display: flex;
    align-items: center;
}

.header-right {
    justify-content: flex-end;
    gap: 20px;
}

.header-center {
    flex: 2;
    text-align: center;
}

.site-logo {
    font-family: var(--font-serif);
    font-size: 24px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-color);
}

.site-logo img {
    max-height: 100px;
    display: block;
    margin: 0 auto;
}

.menu-btn, .search-icon {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 20px;
    color: var(--text-color);
}

.menu-btn {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 30px;
}

.menu-btn span {
    display: block;
    height: 2px;
    width: 100%;
    background-color: var(--text-color);
    transition: var(--transition);
}

.menu-btn:hover span {
    background-color: var(--primary-color);
}

.social-icon:hover, .search-icon:hover {
    color: var(--primary-color);
}

/* ==========================================================================
   SIDEBAR MENU
   ========================================================================== */
.sidebar-menu {
    position: fixed;
    top: 0;
    left: -100%;
    width: 55%;
    height: 100vh;
    background-color: var(--bg-color);
    z-index: 1000;
    transition: left 0.4s cubic-bezier(0.77, 0, 0.175, 1);
    box-shadow: 5px 0 25px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.sidebar-menu.active {
    left: 0;
}

.sidebar-header {
    padding: 30px;
    text-align: right;
}

.close-btn {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
}

.close-btn:hover {
    color: var(--primary-color);
    transform: rotate(90deg);
}

.sidebar-content {
    display: flex;
    padding: 0 40px 40px;
    flex: 1;
}

.sidebar-col-left, .sidebar-col-right {
    flex: 1;
    padding-right: 20px;
}

.sidebar-col-left {
    display: flex;
    flex-direction: column;
}

.sidebar-title, .sidebar-subtitle {
    font-family: var(--font-serif);
    font-size: 32px;
    margin-bottom: 30px;
    color: var(--text-color);
}

.sidebar-subtitle {
    font-size: 18px;
    color: var(--text-light);
    letter-spacing: 2px;
    margin-bottom: 20px;
}

.main-links {
    list-style: none;
    margin-bottom: 50px;
}

.main-links li {
    margin-bottom: 15px;
}

.main-links a {
    font-family: var(--font-serif);
    font-size: 24px;
    color: var(--text-color);
}

.main-links a:hover {
    color: var(--primary-color);
}

.chapters-list {
    list-style: none;
    max-height: calc(100vh - 200px);
    overflow-y: auto;
    padding-right: 15px;
}

.chapters-list::-webkit-scrollbar {
    width: 4px;
}
.chapters-list::-webkit-scrollbar-thumb {
    background-color: var(--border-color);
}

.chapters-list li {
    margin-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
}

.chapters-list a {
    font-size: 15px;
    color: var(--text-color);
    display: block;
    line-height: 1.4;
}

.chapters-list a:hover {
    color: var(--primary-color);
}

.sidebar-footer {
    margin-top: auto;
    font-size: 14px;
    color: var(--text-light);
}

.sidebar-presented-by {
    margin-top: auto;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.presented-logo {
    margin-bottom: 12px;
}

.presented-logo img {
    max-height: 40px;
    width: auto;
    display: block;
}

.presented-text {
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 300;
    color: var(--text-light);
    letter-spacing: 0.5px;
    margin-bottom: 3px;
}

.presented-name {
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-color);
    display: inline-block;
}

.presented-name:hover {
    color: var(--text-color);
}

.menu-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: rgba(0,0,0,0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.menu-backdrop.active {
    opacity: 1;
    visibility: visible;
}

/* ==========================================================================
   SEARCH OVERLAY
   ========================================================================== */
.search-overlay {
    position: fixed;
    top: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-color);
    z-index: 1001;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: top 0.4s ease;
}

.search-overlay.active {
    top: 0;
}

.search-container {
    width: 100%;
    max-width: 600px;
    padding: 20px;
    position: relative;
}

.search-container .close-btn {
    position: absolute;
    top: -50px;
    right: 20px;
}

.search-form {
    display: flex;
    border-bottom: 2px solid var(--text-color);
}

.search-form input {
    flex: 1;
    background: none;
    border: none;
    padding: 15px 0;
    font-size: 24px;
    font-family: var(--font-serif);
    color: var(--text-color);
    outline: none;
}

.search-form button {
    background: none;
    border: none;
    font-size: 18px;
    font-family: var(--font-sans);
    color: var(--primary-color);
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.search-autocomplete {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: #fff;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    max-height: 400px;
    overflow-y: auto;
    z-index: 1002;
    display: none;
    border-radius: 0 0 5px 5px;
}

.search-autocomplete.active {
    display: block;
}

.autocomplete-item {
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 16px;
    color: var(--text-color);
    transition: var(--transition);
}

.autocomplete-item:hover, .autocomplete-item.active {
    background-color: var(--bg-color);
    color: var(--primary-color);
}

/* ==========================================================================
   HOME / GRID
   ========================================================================== */
.site-main {
    min-height: calc(100vh - 160px);
    padding: 60px 0;
}

.chapters-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: left;
}

.chapter-card {
    display: block;
    padding: 30px;
    background-color: #fff;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.chapter-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    border-color: var(--primary-color);
}

.chapter-number {
    display: block;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--text-light);
    margin-bottom: 15px;
}

.chapter-card-title {
    font-family: var(--font-serif);
    font-size: 24px;
    line-height: 1.3;
    margin-bottom: 20px;
    color: var(--text-color);
}

.card-line {
    width: 30px;
    height: 1px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.chapter-card:hover .card-line {
    width: 100%;
}

/* ==========================================================================
   CHAPTER PAGE
   ========================================================================== */
.chapter-container {
    max-width: 800px;
}

.chapter-header {
    text-align: center;
    margin-bottom: 50px;
}

.chapter-number-large {
    display: block;
    font-family: var(--font-sans);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.chapter-title {
    font-family: var(--font-serif);
    font-size: 42px;
    line-height: 1.2;
    margin-bottom: 30px;
}

.text-content {
    font-size: 18px;
    line-height: 1.8;
    color: #444;
}

.paragraph-section {
    margin-bottom: 100px;
    text-align: center;
}

.paragraph-divider-large {
    width: 100%;
    height: 1px;
    background-color: var(--border-color);
    margin: 60px auto 40px;
    opacity: 0.6;
}

.paragraph-title {
    font-family: var(--font-sans);
    text-transform: uppercase;
    letter-spacing: 5px;
    font-size: 16px;
    color: var(--primary-color);
    margin-bottom: 40px;
}

.serif-content {
    font-family: var(--font-serif) !important;
    font-size: 20px;
    line-height: 1.9;
    text-align: left;
    max-width: 90%;
    margin: 0 auto;
}

.paragraph-divider-small {
    width: 35px;
    height: 1px;
    background-color: var(--border-color);
    max-width: 90%;
    margin: 40px auto 20px auto;
    opacity: 0.8;
}

.paragraph-references {
    font-family: var(--font-sans);
    font-size: 14px;
    color: #888888; /* Softer gray */
    line-height: 1.8;
    text-align: left;
    max-width: 90%;
    margin: 0 auto 40px auto;
    white-space: pre-line;
}

/* Navigation */
.chapter-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.btn-index {
    display: inline-block;
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 12px;
}

/* ==========================================================================
   AUDIO PLAYER
   ========================================================================== */
.audio-player-wrapper {
    background: #fff;
    padding: 20px 30px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    margin-bottom: 40px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.custom-audio {
    flex: 1;
    min-width: 250px;
    height: 40px;
}

.download-audio {
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--text-light);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    opacity: 0.8;
}

.download-audio:hover {
    color: var(--primary-color);
    opacity: 1;
}

/* ==========================================================================
   AUDIOS PAGE & OTHERS
   ========================================================================== */
.page-header {
    margin-bottom: 50px;
    text-align: center;
}

.page-title {
    font-family: var(--font-serif);
    font-size: 42px;
    margin-bottom: 20px;
}

.audios-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.audio-card {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    transition: var(--transition);
}

.audio-card:hover {
    border-color: #d8d8d8;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
}

.audio-info {
    flex: 1;
    min-width: 200px;
}

.audio-number {
    display: block;
    font-size: 12px;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.audio-info h2 {
    font-family: var(--font-serif);
    font-size: 26px;
    margin: 0 0 10px 0;
    color: var(--text-color);
}

.audio-duration {
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--text-light);
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.audio-actions {
    display: flex;
    gap: 20px;
    align-items: center;
    margin-left: 20px;
}

.btn-listen {
    display: inline-block;
    padding: 12px 25px;
    background-color: var(--primary-color);
    color: #fff !important;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 13px;
    border-radius: 3px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-family: var(--font-sans);
}

.btn-listen:hover {
    background-color: #a65822;
}

.btn-download {
    color: var(--text-light);
    font-size: 16px;
    opacity: 0.7;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-download:hover {
    color: var(--primary-color);
    opacity: 1;
}

/* ==========================================================================
   COMMENTS SECTION
   ========================================================================== */
.chapter-comments-section {
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.comments-section-title {
    font-family: var(--font-serif);
    font-size: 24px;
    color: var(--text-color);
    margin-bottom: 30px;
    font-weight: 600;
}

.comment-item {
    background-color: #ffffff;
    border: 1px solid rgba(0,0,0,0.05);
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
    border-radius: 8px;
    padding: 30px;
    margin-bottom: 25px;
}

.comment-author {
    margin-top: 20px;
    font-size: 14px;
    color: var(--primary-color);
    font-style: italic;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
    background-color: #fff;
    border-top: 1px solid var(--border-color);
    padding: 30px 20px;
    text-align: center;
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 1024px) {
    .chapters-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .site-header {
        padding: 20px;
    }
    .site-logo img {
        max-height: 60px;
    }
    .chapters-grid {
        grid-template-columns: 1fr;
    }
    .sidebar-menu {
        width: 100%;
        overflow-y: auto;
    }
    
    .sidebar-content {
        flex-direction: column;
        padding: 0 25px 40px;
    }
    
    .sidebar-col-left, .sidebar-col-right {
        padding-right: 0;
    }
    
    .sidebar-col-left {
        margin-bottom: 20px;
        padding-bottom: 20px;
        border-bottom: 1px solid var(--border-color);
    }
    
    .sidebar-col-right {
        margin-bottom: 0;
        padding-bottom: 0;
        border-bottom: none;
        display: flex;
        flex-direction: column;
    }
    
    .sidebar-presented-by {
        margin-top: 30px;
        padding-top: 20px;
        border-top: 1px solid var(--border-color);
        text-align: left;
    }
    
    /* Chapters list (Mobile) */
    .sidebar-subtitle {
        font-size: 14px;
        color: var(--primary-color);
        margin-bottom: 15px;
        font-weight: 600;
    }
    
    .chapters-list {
        max-height: none;
        overflow-y: visible;
        padding-right: 0;
    }
    
    .chapters-list li {
        margin-bottom: 0;
        padding-bottom: 0;
    }
    
    .chapters-list a {
        font-size: 17px;
        font-weight: 600;
        color: var(--text-color);
        padding: 16px 0;
        min-height: 50px;
        display: flex;
        align-items: center;
        line-height: 1.3;
    }
    
    /* Institutional menu (Mobile) */
    .sidebar-title {
        display: block;
        font-size: 18px;
        color: var(--text-light);
        margin-bottom: 15px;
    }
    
    .main-links {
        margin-bottom: 0;
        display: flex;
        flex-wrap: wrap;
        gap: 10px 20px;
    }
    
    .main-links li {
        margin-bottom: 0;
        border-bottom: none;
    }
    
    .main-links a {
        font-family: var(--font-sans);
        font-size: 15px;
        font-weight: 700;
        color: var(--text-color);
        display: inline-block;
        padding: 8px 0;
        min-height: auto;
        text-transform: uppercase;
        letter-spacing: 1px;
    }
    
    .chapter-navigation {
        flex-direction: column;
        gap: 20px;
    }
    
    /* Audio adjustments for mobile */
    .audio-card {
        flex-direction: column;
        align-items: stretch;
        text-align: left;
        padding: 25px 20px;
    }
    
    .audio-actions {
        flex-direction: column;
        margin-left: 0;
        margin-top: 25px;
        gap: 15px;
        width: 100%;
    }
    
    .btn-listen {
        width: 100%;
    }
    
    .audio-player-wrapper {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 20px;
    }
    
    .download-audio {
        margin-top: 10px;
        justify-content: center;
    }
}