/* ==============================================================================
   SELLEX CHAT & ACADEMIA — DESIGN SYSTEM & STYLES (chat.sellex.ao)
   Cores 100% alinhadas com a plataforma principal (sellex.ao)
   Fundo Deep Black: #000000 | Fundo dos cards/sidebar: #0a0a0a e #18181b
   Destaque: #FF6016 | Texto: #EFECE5 / #FFFFFF
   ============================================================================== */

:root {
    --bg-main: #000000;
    --bg-sidebar: #070707;
    --bg-card: #0e0e10;
    --bg-card-hover: #16161a;
    --bg-input: #0a0a0d;
    --border-color: #212124;
    --border-hover: #3a3a40;
    --text-primary: #EFECE5;
    --text-secondary: #A1A1AA;
    --text-muted: #71717A;
    --sellex-orange: #FF6016;
    --sellex-orange-hover: #E5520D;
    --sellex-orange-light: rgba(255, 96, 22, 0.12);
    --sidebar-width: 80px;
    --chat-max-width: 840px;
    --font-family: 'DM Sans', DMSans, -apple-system, BlinkMacSystemFont, sans-serif;
}

/* Light Theme */
body.light-theme {
    --bg-main: #FAFAFA;
    --bg-sidebar: #FFFFFF;
    --bg-card: #FFFFFF;
    --bg-card-hover: #F4F4F5;
    --bg-input: #FFFFFF;
    --border-color: #E4E4E7;
    --border-hover: #D4D4D8;
    --text-primary: #18181B;
    --text-secondary: #52525B;
    --text-muted: #A1A1AA;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    -webkit-font-smoothing: antialiased;
}

html, body {
    height: 100%;
    width: 100%;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    display: flex;
    overflow: hidden;
    transition: background-color 0.2s ease, color 0.2s ease;
}

/* ─────────────────────────────────────────────
   SIDEBAR (Desktop)
   ───────────────────────────────────────────── */
.chat-sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0 16px 0;
    z-index: 20;
    flex-shrink: 0;
}

.sidebar-top {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 28px;
    width: 100%;
}

.sidebar-logo {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: var(--sellex-orange-light);
    border: 1px solid rgba(255, 96, 22, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.sidebar-logo:hover {
    border-color: var(--sellex-orange);
}

.sidebar-logo img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    width: 100%;
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    width: 62px;
    padding: 10px 0;
    border-radius: 10px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 11px;
    font-weight: 500;
    transition: all 0.15s ease;
    cursor: pointer;
    background: transparent;
    border: 1px solid transparent;
}

.nav-item i {
    font-size: 20px;
}

.nav-item:hover {
    color: var(--text-primary);
    background: var(--bg-card-hover);
}

.nav-item.active {
    color: var(--sellex-orange);
    background: var(--sellex-orange-light);
    border-color: rgba(255, 96, 22, 0.25);
}

.sidebar-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.theme-toggle-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 10.5px;
    font-weight: 500;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.15s ease;
}

.theme-toggle-btn i {
    font-size: 18px;
}

.theme-toggle-btn:hover {
    color: var(--text-primary);
    background: var(--bg-card-hover);
}

/* ─────────────────────────────────────────────
   MOBILE HEADER (Idêntico ao index da plataforma)
   ───────────────────────────────────────────── */
.mobile-header-wrapper {
    display: none;
}

/* ─────────────────────────────────────────────
   MAIN CONTAINER & SCROLL SYSTEM
   ───────────────────────────────────────────── */
.chat-main-container {
    flex: 1;
    height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow-y: auto;
    overflow-x: hidden;
    background-color: var(--bg-main);
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
}

/* Custom Scrollbar */
.chat-main-container::-webkit-scrollbar {
    width: 6px;
}

.chat-main-container::-webkit-scrollbar-track {
    background: transparent;
}

.chat-main-container::-webkit-scrollbar-thumb {
    background: #212124;
    border-radius: 4px;
}

.chat-main-container::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}

/* Desktop Top bar */
.chat-topbar {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding: 16px 32px;
    width: 100%;
    position: sticky;
    top: 0;
    z-index: 20;
    background: var(--bg-main);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-topbar {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.15s ease;
}

.btn-topbar:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.btn-topbar i {
    font-size: 15px;
}

.btn-new-chat {
    color: var(--text-secondary);
}

.btn-new-chat:hover {
    color: var(--text-primary);
}

/* ─────────────────────────────────────────────
   HERO STATE (Chat)
   ───────────────────────────────────────────── */
.chat-hero-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 30px 24px 60px 24px;
    max-width: var(--chat-max-width);
    margin: 0 auto;
    width: 100%;
    text-align: center;
    min-height: calc(100vh - 120px);
}

.chat-hero-section.hidden {
    display: none;
}

.chat-hero-title {
    font-size: clamp(22px, 3.5vw, 30px);
    font-weight: 700;
    letter-spacing: -0.4px;
    margin-bottom: 24px;
    color: var(--text-primary);
    line-height: 1.3;
}

/* Chat Input Card */
.chat-input-card {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    transition: border-color 0.15s ease;
}

.chat-input-card:focus-within {
    border-color: var(--sellex-orange);
}

.chat-textarea {
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 14.5px;
    line-height: 1.5;
    resize: none;
    min-height: 50px;
    max-height: 220px;
    font-family: inherit;
}

.chat-textarea::placeholder {
    color: var(--text-muted);
}

.chat-input-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 8px;
    padding-top: 6px;
}

.input-hint {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 5px;
}

.btn-send {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: var(--sellex-orange);
    color: #FFFFFF;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.15s ease;
    flex-shrink: 0;
}

.btn-send:hover {
    background: var(--sellex-orange-hover);
}

.btn-send:disabled {
    opacity: 0.35;
    cursor: not-allowed;
    background: var(--text-muted);
}

.btn-send i {
    font-size: 16px;
}

/* Chips Row */
.chips-grid {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
    width: 100%;
}

.chip-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 12.5px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    user-select: none;
}

.chip-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.chip-item i {
    font-size: 14px;
}

.chip-item.icon-whatsapp i { color: #25D366; }
.chip-item.icon-catalog i { color: #FF6016; }
.chip-item.icon-ai i { color: #A855F7; }
.chip-item.icon-orders i { color: #3B82F6; }
.chip-item.icon-fee i { color: #F59E0B; }
.chip-item.icon-api i { color: #10B981; }

.quick-link-wrapper {
    margin-top: 24px;
}

.btn-quick-guide {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.15s ease;
}

.btn-quick-guide:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: var(--bg-card);
}

/* ─────────────────────────────────────────────
   CONVERSATION FEED & UNLIMITED SCROLL HEIGHT
   ───────────────────────────────────────────── */
.chat-conversation-wrapper {
    display: none;
    flex-direction: column;
    max-width: var(--chat-max-width);
    margin: 0 auto;
    width: 100%;
    padding: 24px 24px 220px 24px;
    min-height: calc(100vh - 80px);
    height: auto;
}

.chat-conversation-wrapper.active {
    display: flex;
}

.chat-messages-list {
    display: flex;
    flex-direction: column;
    gap: 18px;
    width: 100%;
    height: auto;
}

.message-item {
    display: flex;
    gap: 12px;
    width: 100%;
    height: auto;
}

.message-item.user {
    justify-content: flex-end;
}

.message-item.assistant {
    justify-content: flex-start;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

.message-avatar img {
    width: 18px;
    height: 18px;
    object-fit: contain;
}

.message-bubble {
    padding: 14px 18px;
    border-radius: 14px;
    font-size: 14.5px;
    line-height: 1.65;
    max-width: 84%;
    word-break: break-word;
    height: auto;
}

.message-item.user .message-bubble {
    background: var(--sellex-orange);
    color: #FFFFFF;
    border-bottom-right-radius: 2px;
}

.message-item.assistant .message-bubble {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-bottom-left-radius: 2px;
}

.message-bubble p {
    margin-bottom: 8px;
}

.message-bubble p:last-child {
    margin-bottom: 0;
}

.message-bubble ul {
    margin: 8px 0 8px 18px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.message-bubble li {
    color: var(--text-secondary);
}

.message-bubble strong {
    color: var(--text-primary);
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 0;
}

.typing-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--sellex-orange);
    animation: typingBounce 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBounce {
    0%, 80%, 100% { opacity: 0.3; transform: scale(0.8); }
    40% { opacity: 1; transform: scale(1); }
}

/* Bottom dock */
.chat-bottom-dock {
    position: fixed;
    bottom: 0;
    left: var(--sidebar-width);
    right: 0;
    padding: 16px 24px 24px 24px;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.95) 30%, var(--bg-main) 100%);
    z-index: 30;
    display: flex;
    justify-content: center;
    pointer-events: none;
}

body.light-theme .chat-bottom-dock {
    background: linear-gradient(180deg, rgba(250, 250, 250, 0) 0%, rgba(250, 250, 250, 0.95) 30%, var(--bg-main) 100%);
}

.chat-bottom-dock.hidden {
    display: none;
}

.dock-inner {
    width: 100%;
    max-width: var(--chat-max-width);
    pointer-events: auto;
}

/* ─────────────────────────────────────────────
   ACADEMIA / GUIA DE VÍDEOS (Sem Imagens)
   ───────────────────────────────────────────── */
.academia-container {
    max-width: 1120px;
    margin: 0 auto;
    width: 100%;
    padding: 36px 32px 100px 32px;
}

.academia-header {
    margin-bottom: 28px;
}

.academia-title-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.academia-title-group i {
    font-size: 26px;
    color: var(--sellex-orange);
}

.academia-title {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: -0.4px;
    color: var(--text-primary);
}

.academia-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
    max-width: 720px;
}

/* Search bar */
.academia-search-wrapper {
    margin-bottom: 20px;
    position: relative;
}

.academia-search-wrapper i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 18px;
}

.academia-search-input {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px 16px 12px 46px;
    color: var(--text-primary);
    font-size: 14px;
    outline: none;
    transition: border-color 0.15s ease;
}

.academia-search-input:focus {
    border-color: var(--sellex-orange);
}

.academia-search-input::placeholder {
    color: var(--text-muted);
}

/* Category Filter Tabs */
.academia-filter-tabs {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 30px;
    overflow-x: auto;
    padding-bottom: 4px;
}

.filter-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.filter-tab:hover {
    color: var(--text-primary);
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.filter-tab.active {
    background: var(--text-primary);
    color: #000000;
    border-color: var(--text-primary);
    font-weight: 600;
}

body.light-theme .filter-tab.active {
    background: #18181B;
    color: #FFFFFF;
}

/* Video Grid */
.academia-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

@media (max-width: 1100px) {
    .academia-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 780px) {
    .academia-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 520px) {
    .academia-grid {
        grid-template-columns: 1fr;
    }
}

/* Video Card (SEM IMAGENS - Design em Código / Geométrico Minimalista) */
.video-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    transition: border-color 0.15s ease, background-color 0.15s ease;
    cursor: pointer;
}

.video-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.video-thumbnail-box {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #08080a;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid var(--border-color);
}

body.light-theme .video-thumbnail-box {
    background: #f1f5f9;
}

.video-topic-tag {
    position: absolute;
    top: 10px;
    left: 12px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--sellex-orange);
    background: rgba(255, 96, 22, 0.12);
    padding: 3px 8px;
    border-radius: 6px;
    border: 1px solid rgba(255, 96, 22, 0.25);
}

.video-play-badge {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sellex-orange);
    font-size: 20px;
    transition: transform 0.2s ease, background-color 0.2s ease, color 0.2s ease;
}

.video-card:hover .video-play-badge {
    transform: scale(1.1);
    background: var(--sellex-orange);
    color: #FFFFFF;
}

.video-duration {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.85);
    color: #FFFFFF;
    font-size: 11px;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.video-content {
    padding: 14px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.video-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-muted);
    margin-top: auto;
}

.video-meta i.ri-verified-badge-fill {
    color: #22C55E;
    font-size: 14px;
}

/* ─────────────────────────────────────────────
   VIDEO PLAYER MODAL (Estilo YouTube Completo)
   ───────────────────────────────────────────── */
.video-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.88);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    padding: 20px;
}

.video-modal-backdrop.open {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

/* Picture in picture / Pip Mode */
.video-modal-backdrop.pip-mode {
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    pointer-events: none;
    align-items: flex-end;
    justify-content: flex-end;
    padding: 24px;
}

.video-modal-backdrop.pip-mode .video-modal-container {
    width: 360px;
    max-width: 90vw;
    pointer-events: auto;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
    border: 1px solid var(--border-hover);
}

.video-modal-container {
    width: 100%;
    max-width: 900px;
    background: #000000;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all 0.25s ease;
}

.video-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 18px;
    border-bottom: 1px solid var(--border-color);
    background: #070707;
}

.video-modal-title {
    font-size: 14px;
    font-weight: 600;
    color: #FFFFFF;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    padding-right: 12px;
}

.video-modal-header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.btn-modal-action {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 18px;
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.15s, background-color 0.15s;
}

.btn-modal-action:hover {
    color: #FFFFFF;
    background: rgba(255, 255, 255, 0.08);
}

/* Custom Player Container */
.custom-player-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000000;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.custom-player-wrapper video {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #000;
}

/* Placeholder presentation for video */
.player-screen-canvas {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle at center, #150a04 0%, #000000 100%);
    color: #FFFFFF;
    padding: 20px;
    text-align: center;
    user-select: none;
}

.player-screen-canvas i.canvas-icon {
    font-size: 54px;
    color: var(--sellex-orange);
    margin-bottom: 12px;
}

.player-screen-canvas h2 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 6px;
    color: #EFECE5;
}

.player-screen-canvas p {
    font-size: 13px;
    color: var(--text-secondary);
    max-width: 480px;
}

/* YouTube style bottom controls bar */
.player-controls-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.9) 100%);
    padding: 10px 16px 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    z-index: 5;
    transition: opacity 0.2s ease;
}

.player-progress-container {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 3px;
    cursor: pointer;
    position: relative;
}

.player-progress-bar {
    height: 100%;
    background: var(--sellex-orange);
    border-radius: 3px;
    width: 32%;
    position: relative;
}

.player-progress-bar::after {
    content: '';
    position: absolute;
    right: -4px;
    top: -3px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #FFFFFF;
    box-shadow: 0 0 4px rgba(0, 0, 0, 0.5);
}

.player-controls-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.player-left-controls, .player-right-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.player-ctrl-btn {
    background: transparent;
    border: none;
    color: #FFFFFF;
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px;
    border-radius: 4px;
    transition: color 0.15s;
}

.player-ctrl-btn:hover {
    color: var(--sellex-orange);
}

.player-time-display {
    font-size: 12px;
    color: #E2E8F0;
    font-variant-numeric: tabular-nums;
}

.volume-slider-wrapper {
    display: flex;
    align-items: center;
    gap: 6px;
}

.volume-slider {
    width: 60px;
    height: 4px;
    appearance: none;
    -webkit-appearance: none;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 2px;
    outline: none;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    appearance: none;
    -webkit-appearance: none;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #FFFFFF;
    cursor: pointer;
}

/* ─────────────────────────────────────────────
   RESPONSIVIDADE (MOBILE & TABLET)
   Navbar/Header idêntico à plataforma principal
   ───────────────────────────────────────────── */
@media (max-width: 800px) {
    html, body {
        height: auto;
        min-height: 100%;
        overflow-y: auto;
        overflow-x: hidden;
    }

    body {
        flex-direction: column;
    }

    /* Esconde sidebar de desktop */
    .chat-sidebar {
        display: none !important;
    }

    /* Topbar desktop oculta */
    .chat-topbar {
        display: none !important;
    }

    /* Mostra o header mobile idêntico ao index.html */
    .mobile-header-wrapper {
        display: block;
        position: sticky;
        top: 0;
        left: 0;
        width: 100%;
        z-index: 50000;
        padding-top: 16px;
        padding-bottom: 8px;
        background: var(--bg-main);
    }

    .mobile-header-container {
        width: 90%;
        margin: 0 auto;
        display: flex;
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        padding: 8px 16px;
        border-radius: 30px;
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        background-color: rgba(128, 128, 128, 0.091);
        border: 1px solid rgba(255, 96, 22, 0.15);
    }

    body.light-theme .mobile-header-container {
        background-color: rgba(255, 255, 255, 0.9);
        border: 1px solid #E4E4E7;
    }

    .mobile-logo img {
        height: 26px;
        width: auto;
        display: block;
    }

    .mobile-icon-menu {
        width: 38px;
        height: 38px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: var(--sellex-orange);
        color: #FFFFFF;
        cursor: pointer;
        border: none;
    }

    .mobile-icon-menu i {
        font-size: 18px;
        color: #FFFFFF;
    }

    /* Menu Dropdown Mobile */
    .mobile-dropdown-menu {
        position: fixed;
        top: 74px;
        right: 5%;
        width: 90%;
        max-width: 320px;
        z-index: 50000;
        border-radius: 16px;
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        background-color: rgba(12, 12, 14, 0.95);
        border: 1px solid var(--border-color);
        padding: 16px;
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transform: translateY(-8px);
        transition: opacity 180ms ease, transform 180ms ease, visibility 180ms;
    }

    body.light-theme .mobile-dropdown-menu {
        background-color: #FFFFFF;
        border: 1px solid #E4E4E7;
    }

    .mobile-dropdown-menu.open {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        transform: translateY(0);
    }

    .mobile-dropdown-list {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 6px;
    }

    .mobile-dropdown-item a {
        display: flex;
        align-items: center;
        gap: 8px;
        padding: 10px 12px;
        border-radius: 10px;
        color: var(--text-primary);
        font-size: 13.5px;
        text-decoration: none;
        font-weight: 500;
        transition: background-color 0.15s;
    }

    .mobile-dropdown-item a.active {
        color: var(--sellex-orange);
        background: var(--sellex-orange-light);
        font-weight: 600;
    }

    .mobile-dropdown-item a:hover {
        background: var(--bg-card-hover);
    }

    .btn-mobile-access {
        width: 100%;
        padding: 12px;
        border-radius: 10px;
        background-color: var(--sellex-orange);
        color: #FFFFFF;
        font-size: 13px;
        font-weight: 600;
        cursor: pointer;
        border: none;
        margin-top: 10px;
        text-align: center;
        display: block;
        text-decoration: none;
    }

    .mobile-theme-toggle {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 10px 12px;
        margin-top: 6px;
        border-top: 1px solid var(--border-color);
        color: var(--text-secondary);
        font-size: 13px;
        cursor: pointer;
        background: transparent;
        border-left: none;
        border-right: none;
        border-bottom: none;
        width: 100%;
    }

    /* Container adjustments */
    .chat-main-container {
        height: auto;
        min-height: calc(100vh - 70px);
        overflow-y: visible;
    }

    .chat-conversation-wrapper {
        padding: 16px 16px 200px 16px;
    }

    .chat-bottom-dock {
        left: 0;
        bottom: 0;
        padding: 10px 16px 16px 16px;
    }

    .academia-container {
        padding: 20px 16px 80px 16px;
    }

    .chat-hero-section {
        padding: 20px 16px 40px 16px;
        min-height: auto;
    }

    .chat-hero-title {
        font-size: 20px;
    }
}