/* =============================================================================
   RAG-SRT — Estilo Cecova TV
   Inspirado en cecovatv.es
   ============================================================================= */

/* ── Reset y variables ─────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg-app:      #f0f2f5;        /* fondo general gris claro */
    --bg-sidebar:  #ffffff;        /* sidebar blanco */
    --bg-chat:     #f7f8fa;        /* fondo chat gris muy suave */
    --bg-bubble-u: #0072bc;        /* burbuja usuario — azul Cecova */
    --bg-bubble-b: #ffffff;        /* burbuja bot blanca */
    --bg-input:    #ffffff;        /* fondo inputs */
    --text-main:   #1a1a2e;        /* texto principal casi negro */
    --text-muted:  #6b7280;        /* texto secundario gris */
    --accent:      #0072bc;        /* azul corporativo Cecova */
    --accent-dark: #005a96;        /* azul oscuro hover */
    --accent-2:    #f5a800;        /* amarillo/dorado Cecova (logo) */
    --border:      #dde1e7;        /* bordes suaves */
    --radius:      8px;
    --shadow:      0 1px 4px rgba(0,0,0,.10);
    --shadow-md:   0 4px 16px rgba(0,0,0,.12);
}

body {
    font-family: 'Segoe UI', Arial, system-ui, sans-serif;
    background: var(--bg-app);
    color: var(--text-main);
    height: 100vh;
    display: flex;
    overflow: hidden;
}

/* ── Sidebar ────────────────────────────────────────────────────────────────── */
#sidebar {
    width: 280px;
    min-width: 240px;
    background: var(--bg-sidebar);
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border);
    box-shadow: 2px 0 8px rgba(0,0,0,.06);
}

#sidebar-header {
    padding: 18px 16px 14px;
    border-bottom: 3px solid var(--accent);
    background: var(--accent);
}

#sidebar-header h2 {
    font-size: 1.1rem;
    color: #ffffff;
    margin-bottom: 2px;
    font-weight: 700;
    letter-spacing: .01em;
}

#sidebar-header p {
    font-size: .72rem;
    color: rgba(255,255,255,.75);
}

#upload-area {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    background: #fafbfc;
}

#upload-area label {
    display: block;
    font-size: .78rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 7px;
    text-transform: uppercase;
    letter-spacing: .05em;
}

#upload-area input[type="file"] {
    width: 100%;
    font-size: .78rem;
    color: var(--text-main);
    background: var(--bg-input);
    border: 1px dashed #aab4c4;
    border-radius: var(--radius);
    padding: 7px 8px;
    cursor: pointer;
}

#upload-area input[type="file"]:hover {
    border-color: var(--accent);
}

#upload-btn {
    margin-top: 9px;
    width: 100%;
    padding: 9px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: .85rem;
    font-weight: 700;
    transition: background .2s, transform .1s;
    letter-spacing: .02em;
}

#upload-btn:disabled { opacity: .45; cursor: not-allowed; }
#upload-btn:not(:disabled):hover {
    background: var(--accent-dark);
    transform: translateY(-1px);
}

#upload-status {
    font-size: .73rem;
    margin-top: 6px;
    min-height: 16px;
    color: var(--text-muted);
}

/* URL base de vídeos */
#video-base-section {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    background: #fafbfc;
}

#video-base-section label {
    display: block;
    font-size: .78rem;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: .05em;
}

#video-base-url {
    width: 100%;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-main);
    padding: 6px 9px;
    font-size: .71rem;
    font-family: monospace;
    outline: none;
    transition: border-color .2s;
}

#video-base-url:focus { border-color: var(--accent); }

/* Lista de archivos */
#files-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
    background: #fff;
}

#files-list-title {
    font-size: .72rem;
    color: var(--text-muted);
    padding: 8px 8px 6px;
    text-transform: uppercase;
    letter-spacing: .07em;
    font-weight: 600;
}

.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 10px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: .82rem;
    margin-bottom: 3px;
    transition: background .15s;
    border: 1px solid transparent;
}

.file-item:hover {
    background: #eef4fb;
    border-color: #c8ddf0;
}

.file-item.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
}

.file-item .file-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

.file-item .file-chunks {
    font-size: .68rem;
    opacity: .65;
    margin-left: 6px;
    white-space: nowrap;
}

.file-delete {
    background: none;
    border: none;
    color: #e05050;
    cursor: pointer;
    font-size: .85rem;
    padding: 2px 5px;
    margin-left: 4px;
    border-radius: 4px;
    opacity: 0;
    transition: opacity .15s, background .15s;
}

.file-item:hover .file-delete { opacity: 1; }
.file-item.active .file-delete { opacity: .8; color: #fff; }
.file-delete:hover { background: rgba(224,80,80,.15); }

/* Badge de sesión */
#session-badge {
    padding: 8px 14px;
    border-top: 1px solid var(--border);
    font-size: .68rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 6px;
    background: #fafbfc;
}

#session-badge span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    font-family: monospace;
}

/* ── Área de chat ───────────────────────────────────────────────────────────── */
#chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-chat);
    overflow: hidden;
}

#chat-header {
    padding: 13px 22px;
    background: #ffffff;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow);
}

#chat-header h1 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--accent);
}

#active-file-badge {
    font-size: .73rem;
    color: var(--text-muted);
    margin-top: 2px;
}

#clear-btn {
    background: none;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 5px 13px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: .78rem;
    transition: all .2s;
}

#clear-btn:hover {
    border-color: #e05050;
    color: #e05050;
    background: rgba(224,80,80,.05);
}

#messages {
    flex: 1;
    overflow-y: auto;
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

/* ── Pantalla de bienvenida ─────────────────────────────────────────────────── */
#welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    gap: 12px;
    text-align: center;
}

#welcome h3 {
    font-size: 1.25rem;
    color: var(--accent);
    font-weight: 700;
}

#welcome p {
    font-size: .87rem;
    color: var(--text-muted);
    max-width: 400px;
    line-height: 1.6;
}

#suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 10px;
}

.suggestion-btn {
    background: #fff;
    border: 1px solid #c8ddf0;
    color: var(--accent);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: .82rem;
    font-weight: 500;
    transition: all .2s;
    box-shadow: var(--shadow);
}

.suggestion-btn:hover {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* ── Burbujas de mensaje ────────────────────────────────────────────────────── */
.message      { display: flex; flex-direction: column; max-width: 75%; }
.message.user { align-self: flex-end;   align-items: flex-end;   max-width: 75%; }
.message.bot  { align-self: flex-start; align-items: flex-start; max-width: 92%; }

.bubble {
    padding: 11px 16px;
    border-radius: var(--radius);
    line-height: 1.6;
    font-size: .9rem;
    box-shadow: var(--shadow);
    word-break: break-word;
}

.message.user .bubble {
    background: var(--accent);
    color: #fff;
    border-bottom-right-radius: 3px;
}

.message.bot .bubble {
    background: #ffffff;
    color: var(--text-main);
    border: 1px solid var(--border);
    border-bottom-left-radius: 3px;
}

/* ── Indicador de escritura ─────────────────────────────────────────────────── */
.typing .bubble { padding: 13px 18px; }

.typing-dots { display: flex; gap: 4px; align-items: center; }

.typing-dots span {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #aab4c4;
    animation: bounce .9s infinite;
}

.typing-dots span:nth-child(2) { animation-delay: .15s; }
.typing-dots span:nth-child(3) { animation-delay: .30s; }

@keyframes bounce {
    0%, 80%, 100% { transform: translateY(0); }
    40%            { transform: translateY(-6px); }
}

/* ── Fuentes colapsables ────────────────────────────────────────────────────── */
.sources-wrapper {
    width: 100%;
    margin-top: 4px;
    margin-bottom: 4px;
}

.sources-toggle {
    font-size: .72rem;
    color: var(--text-muted);
    cursor: pointer;
    margin-bottom: 6px;
    user-select: none;
    transition: color .2s;
}

.sources-toggle:hover { color: var(--accent); }

.sources-panel {
    display: none;
    gap: 8px;
    width: 100%;
    grid-template-columns: repeat(3, 1fr);
}

.sources-panel.open { display: grid; }

.source-item {
    background: #ffffff;
    border: 1px solid #c8ddf0;
    border-left: 3px solid var(--accent);
    border-radius: 8px;
    padding: 10px 12px;
    font-size: .75rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: border-color .2s, background .2s, box-shadow .2s;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.source-item:hover {
    border-color: var(--accent);
    background: #f0f6fc;
    box-shadow: var(--shadow-md);
    transform: none;
}

.source-item strong {
    color: var(--accent);
    display: block;
    font-size: .78rem;
    font-weight: 700;
    margin-bottom: 1px;
}

.source-time {
    font-family: monospace;
    font-size: .67rem;
    color: var(--text-muted);
    display: block;
    margin-left: 0;
    opacity: 1;
}

.source-item em {
    color: var(--text-main);
    font-style: italic;
    font-size: .75rem;
    line-height: 1.4;
}

.source-play-hint {
    font-size: .7rem;
    color: var(--accent);
    margin-top: 4px;
    font-weight: 600;
}

/* ── Links inline de fichero en respuesta ───────────────────────────────────── */
.inline-ref {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: #eef4fb;
    border: 1px solid #c8ddf0;
    border-radius: 20px;
    padding: 2px 10px;
    color: var(--accent);
    font-size: .78rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .2s, border-color .2s, color .2s;
    white-space: nowrap;
    vertical-align: middle;
    margin: 1px 2px;
}

.inline-ref:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.inline-ref-time {
    font-family: monospace;
    font-size: .68rem;
    opacity: .75;
}

/* ── Referencias en burbuja ─────────────────────────────────────────────────── */
.bubble-refs {
    margin-top: 10px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
    font-size: .75rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
}

.refs-label {
    color: var(--text-muted);
    font-weight: 600;
    flex-shrink: 0;
}

.ref-link {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    background: #eef4fb;
    border: 1px solid #c8ddf0;
    border-radius: 20px;
    padding: 3px 10px;
    color: var(--accent);
    font-weight: 600;
    cursor: pointer;
    transition: background .2s, border-color .2s;
    white-space: nowrap;
}

.ref-link:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

/* ── Input area ─────────────────────────────────────────────────────────────── */
#input-area {
    padding: 14px 22px;
    background: #ffffff;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 10px;
    align-items: flex-end;
    box-shadow: 0 -2px 8px rgba(0,0,0,.06);
}

#user-input {
    flex: 1;
    background: #f7f8fa;
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-main);
    padding: 10px 15px;
    font-size: .9rem;
    resize: none;
    max-height: 160px;
    overflow-y: auto;
    line-height: 1.5;
    outline: none;
    transition: border-color .2s, box-shadow .2s;
    font-family: inherit;
}

#user-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(0,114,188,.12);
    background: #fff;
}

#user-input::placeholder { color: #aab4c4; }

#send-btn {
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 10px;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 1.1rem;
    transition: background .2s, transform .1s;
    align-self: flex-end;
    box-shadow: var(--shadow);
}

#send-btn:disabled { opacity: .4; cursor: not-allowed; }
#send-btn:not(:disabled):hover {
    background: var(--accent-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* ── Scrollbar ──────────────────────────────────────────────────────────────── */
::-webkit-scrollbar        { width: 5px; }
::-webkit-scrollbar-track  { background: transparent; }
::-webkit-scrollbar-thumb  { background: #c8ddf0; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ── Video popup ────────────────────────────────────────────────────────────── */
#video-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: rgba(0,0,0,.75);
    backdrop-filter: blur(6px);
    align-items: center;
    justify-content: center;
}

#video-overlay.open { display: flex; }

#video-popup {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 22px;
    width: 92%;
    max-width: 880px;
    position: relative;
    animation: popIn .2s ease;
    box-shadow: 0 20px 60px rgba(0,0,0,.25);
}

@keyframes popIn {
    from { opacity: 0; transform: scale(.96); }
    to   { opacity: 1; transform: scale(1); }
}

#video-popup-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 14px;
    gap: 10px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--accent);
}

#video-popup-title {
    font-family: monospace;
    font-size: .85rem;
    color: var(--accent);
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

#video-popup-time {
    font-size: .73rem;
    color: var(--text-muted);
    font-family: monospace;
    margin-top: 3px;
}

#close-video-btn {
    background: #f0f2f5;
    border: 1px solid var(--border);
    color: var(--text-muted);
    cursor: pointer;
    font-size: .82rem;
    padding: 5px 14px;
    border-radius: var(--radius);
    flex-shrink: 0;
    transition: all .2s;
    font-weight: 600;
}

#close-video-btn:hover {
    background: #e05050;
    border-color: #e05050;
    color: #fff;
}

#video-popup video {
    width: 100%;
    border-radius: 8px;
    background: #000;
    max-height: 60vh;
    display: block;
    box-shadow: var(--shadow-md);
}

#video-popup-text {
    margin-top: 14px;
    padding: 11px 15px;
    background: #f0f6fc;
    border-radius: var(--radius);
    border-left: 3px solid var(--accent);
    font-size: .83rem;
    color: var(--text-main);
    line-height: 1.6;
    font-style: italic;
}

#video-no-url {
    text-align: center;
    padding: 30px;
    color: var(--text-muted);
    font-size: .85rem;
}