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

:root {
    --bg: #0f1117;
    --surface: #1a1d27;
    --surface2: #242836;
    --border: #2e3344;
    --text: #e4e6ef;
    --text-dim: #8b8fa3;
    --accent: #6c63ff;
    --accent-h: #857dff;
    --green: #2dd4a8;
    --red: #f44;
    --orange: #f9a825;
    --radius: 8px;
    --font: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

html,
body {
    height: 100%;
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    overflow: hidden;
}

/* ── Header ───────────────────────────────────────────────────── */
#header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.header-left h1 {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.header-left .subtitle {
    font-size: 11px;
    color: var(--text-dim);
    margin-left: 10px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-dim);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    display: inline-block;
}

.dot.disconnected {
    background: var(--red);
}

.dot.connecting {
    background: var(--orange);
    animation: pulse 1s infinite;
}

.dot.connected {
    background: var(--green);
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.4;
    }
}

/* ── Main Layout ──────────────────────────────────────────────── */
#main {
    display: flex;
    height: calc(100vh - 100px);
    /* header + footer */
}

/* ── Chat Panel (left) ────────────────────────────────────────── */
#chat-panel {
    flex: 1;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border);
    min-width: 0;
}

#chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.msg {
    max-width: 80%;
    padding: 10px 14px;
    border-radius: var(--radius);
    font-size: 14px;
    line-height: 1.5;
    word-wrap: break-word;
}

.msg.user {
    align-self: flex-end;
    background: var(--accent);
    color: #fff;
    border-bottom-right-radius: 2px;
}

.msg.bot {
    align-self: flex-start;
    background: var(--surface2);
    border-bottom-left-radius: 2px;
}

.msg .msg-meta {
    font-size: 11px;
    color: var(--text-dim);
    margin-top: 4px;
    display: flex;
    gap: 8px;
}

.msg.bot .msg-meta {
    color: #6b6f83;
}

.msg .msg-audio {
    margin-top: 6px;
}

.msg .msg-audio audio {
    width: 100%;
    height: 32px;
}

.msg .msg-video {
    margin-top: 6px;
}

.msg .msg-video video {
    width: 100%;
    max-height: 200px;
    border-radius: 4px;
}

.msg.system {
    align-self: center;
    background: transparent;
    color: var(--text-dim);
    font-size: 12px;
    font-style: italic;
    padding: 4px 8px;
}

#chat-input-bar {
    display: flex;
    padding: 12px 16px;
    gap: 8px;
    background: var(--surface);
    border-top: 1px solid var(--border);
}

#chat-input {
    flex: 1;
    padding: 10px 14px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--surface2);
    color: var(--text);
    font-size: 14px;
    font-family: var(--font);
    outline: none;
    transition: border-color 0.2s;
}

#chat-input:focus {
    border-color: var(--accent);
}

#chat-input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#send-btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius);
    background: var(--accent);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

#send-btn:hover:not(:disabled) {
    background: var(--accent-h);
}

#send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ── Media Panel (right) ──────────────────────────────────────── */
#media-panel {
    width: 360px;
    display: flex;
    flex-direction: column;
    padding: 16px;
    gap: 12px;
    background: var(--surface);
    overflow-y: auto;
}

/* Avatar / Video Container */
#video-container {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    background: var(--bg);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
}

#avatar-canvas {
    width: 100%;
    height: 100%;
    display: block;
    border-radius: var(--radius);
}

#avatar-loading {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(15, 17, 23, 0.85);
    z-index: 5;
    gap: 12px;
    color: var(--text-dim);
    font-size: 13px;
}

#avatar-loading .loading-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

#local-video {
    position: absolute;
    bottom: 10px;
    right: 10px;
    width: 120px;
    height: 90px;
    object-fit: cover;
    border-radius: 8px;
    border: 2px solid var(--accent);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
    display: none;
    z-index: 10;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

#local-video:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 20px rgba(108, 99, 255, 0.4);
}

/* RTC Controls */
#rtc-controls {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

#rtc-controls button {
    flex: 1;
    min-width: 90px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface2);
    color: var(--text);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

#rtc-controls button:hover:not(:disabled) {
    border-color: var(--accent);
    background: rgba(108, 99, 255, 0.1);
}

#rtc-controls button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

#connect-btn {
    border-color: var(--green);
    color: var(--green);
}

#connect-btn:hover:not(:disabled) {
    background: rgba(45, 212, 168, 0.1);
    border-color: var(--green);
}

#disconnect-btn {
    border-color: var(--red);
    color: var(--red);
}

#disconnect-btn:hover:not(:disabled) {
    background: rgba(255, 68, 68, 0.1);
    border-color: var(--red);
}

#mic-btn {
    flex-basis: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.2s;
}

#mic-btn.mic-off {
    border-color: var(--border);
    color: var(--text-dim);
}

#mic-btn.mic-on {
    border-color: var(--red);
    background: rgba(255, 68, 68, 0.15);
    color: var(--red);
    animation: pulse-border 1.5s infinite;
}

@keyframes pulse-border {

    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(255, 68, 68, 0.3);
    }

    50% {
        box-shadow: 0 0 0 6px rgba(255, 68, 68, 0);
    }
}

.mic-icon {
    font-size: 20px;
}

/* Scan Document Button */
#scan-doc-btn {
    flex-basis: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    font-size: 14px;
    font-weight: 600;
    border-color: #4fc3f7;
    color: #4fc3f7;
    transition: all 0.2s;
}

#scan-doc-btn:hover:not(:disabled) {
    background: rgba(79, 195, 247, 0.1);
    border-color: #4fc3f7;
    box-shadow: 0 0 12px rgba(79, 195, 247, 0.2);
}

.scan-icon {
    font-size: 18px;
}

/* Scan Flash Animation */
@keyframes scanFlash {
    0% {
        filter: brightness(1);
    }

    30% {
        filter: brightness(2.5);
    }

    100% {
        filter: brightness(1);
    }
}

.scan-flash {
    animation: scanFlash 0.4s ease-out;
}

/* Audio Visualizer */
#audio-visualizer {
    width: 100%;
    height: 60px;
    border-radius: var(--radius);
    background: var(--surface2);
}

/* Config Panel */
#config-panel {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 10px;
}

#config-panel summary {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-dim);
    cursor: pointer;
    user-select: none;
}

.config-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 8px;
    align-items: center;
    margin-top: 10px;
    font-size: 13px;
}

.config-grid label {
    color: var(--text-dim);
}

.config-grid input[type="text"],
.config-grid select {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--surface2);
    color: var(--text);
    font-size: 13px;
    font-family: var(--font);
    outline: none;
}

.config-grid input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
}

#cfg-apply {
    margin-top: 10px;
    width: 100%;
    padding: 8px;
    border: 1px solid var(--accent);
    border-radius: 4px;
    background: transparent;
    color: var(--accent);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

#cfg-apply:hover {
    background: rgba(108, 99, 255, 0.1);
}

/* Latency Bar */
#latency-bar {
    text-align: center;
    font-size: 12px;
    color: var(--text-dim);
    padding: 4px;
}

/* ── Footer ───────────────────────────────────────────────────── */
#footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 24px;
    font-size: 11px;
    color: var(--text-dim);
    background: var(--surface);
    border-top: 1px solid var(--border);
}

/* ── Scrollbar ────────────────────────────────────────────────── */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-dim);
}

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 768px) {
    #main {
        flex-direction: column;
    }

    #chat-panel {
        border-right: none;
        border-bottom: 1px solid var(--border);
        height: 50%;
    }

    #media-panel {
        width: 100%;
        height: 50%;
    }
}