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

[hidden] {
    display: none !important;
}

:root {
    --bg:          #0a0a0f;
    --surface:     #12121a;
    --surface-2:   #1a1a26;
    --border:      #ffffff12;
    --border-hover:#ffffff22;
    --accent:      #6c63ff;
    --accent-dark: #5549e8;
    --accent-glow: #6c63ff44;
    --text:        #e2e2f0;
    --text-muted:  #6b6b88;
    --text-dim:    #3a3a55;
    --green:       #22c55e;
    --green-glow:  #22c55e33;
    --yellow:      #eab308;
    --red:         #ef4444;
    --radius-sm:   6px;
    --radius-md:   10px;
    --radius-lg:   16px;
    --shadow:      0 4px 24px #00000055;
    --transition:  150ms ease;
}

html {
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 24px 16px 48px;
    /* Subtle grid background */
    background-image:
        radial-gradient(ellipse 80% 50% at 50% -20%, #6c63ff18, transparent);
}

/* ── Typography ───────────────────────────────────────────────────────── */
h2 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: #fff;
}

/* ── Layout wrapper ───────────────────────────────────────────────────── */
.page-card {
    width: 100%;
    max-width: 520px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    padding: 28px 24px;
    animation: fadeUp 0.25s ease both;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* ── Lobby ────────────────────────────────────────────────────────────── */
#lobby {
    width: 100%;
    max-width: 520px;
}

.lobby-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 24px;
}

.lobby-icon {
    width: 36px;
    height: 36px;
    background: var(--accent-glow);
    border: 1px solid var(--accent);
    border-radius: var(--radius-sm);
    display: grid;
    place-items: center;
    font-size: 18px;
    flex-shrink: 0;
}

.lobby-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* Channels list */
#channels-list {
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.channels-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 10px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border);
}

#no-channels {
    color: var(--text-muted);
    font-size: 0.85rem;
    padding: 16px 0;
    text-align: center;
}

.channel-btn {
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text);
    padding: 12px 14px;
    border-radius: var(--radius-md);
    cursor: pointer;
    text-align: left;
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    transition: background var(--transition), border-color var(--transition), transform var(--transition);
    width: 100%;
}

.channel-btn:hover {
    background: #1e1e2e;
    border-color: var(--accent);
    transform: translateX(2px);
}

.channel-btn:active {
    transform: translateX(0);
}

.channel-name {
    font-weight: 500;
    color: #fff;
}

.channel-name::before {
    content: "#";
    color: var(--accent);
    font-weight: 700;
    margin-right: 1px;
}

.channel-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
    flex-shrink: 0;
}

.channel-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 4px;
}

.channel-count::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 6px var(--green-glow);
}

.channel-time {
    font-size: 0.7rem;
    color: var(--text-dim);
}

/* Join row */
.join-row {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

.join-row input {
    flex: 1;
    min-width: 0;
}

/* ── Shared Inputs ────────────────────────────────────────────────────── */
input[type="text"],
input:not([type]) {
    padding: 10px 14px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    font-size: 0.875rem;
    font-family: inherit;
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
    width: 100%;
}

input[type="text"]:focus,
input:not([type]):focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

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

/* ── Buttons ──────────────────────────────────────────────────────────── */
button.action {
    background: var(--accent);
    border: none;
    color: #fff;
    padding: 10px 18px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: inherit;
    white-space: nowrap;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

button.action:hover {
    background: var(--accent-dark);
    box-shadow: 0 0 16px var(--accent-glow);
    transform: translateY(-1px);
}

button.action:active {
    transform: translateY(0);
    box-shadow: none;
}

button.action.secondary {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
}

button.action.secondary:hover {
    background: var(--surface-2);
    border-color: var(--border-hover);
    color: var(--text);
    box-shadow: none;
}

/* ── Room ─────────────────────────────────────────────────────────────── */
#room-view {
    width: 100%;
    max-width: 640px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

#room-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
}

#room-title {
    font-size: 0.95rem;
    font-weight: 600;
    flex: 1;
    color: #fff;
}

#room-title::before {
    content: "#";
    color: var(--accent);
    font-weight: 700;
}

#room-status {
    font-size: 0.7rem;
    font-weight: 500;
    padding: 4px 10px;
    border-radius: 20px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text-muted);
    white-space: nowrap;
    transition: color var(--transition), border-color var(--transition), box-shadow var(--transition);
}

#room-status.connected {
    border-color: var(--green);
    color: var(--green);
    box-shadow: 0 0 8px var(--green-glow);
}

/* ── App modules ─────────────────────────────────────────────────────── */
.app-module {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.app-module-header {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    border: none;
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    font: inherit;
    text-align: left;
    transition: background var(--transition);
}

.app-module-header:hover {
    background: var(--surface-2);
}

.app-module-title,
.app-module-subtitle {
    display: block;
}

.app-module-title {
    font-size: 0.88rem;
    font-weight: 650;
    color: #fff;
}

.app-module-subtitle {
    margin-top: 2px;
    font-size: 0.72rem;
    color: var(--text-muted);
}

.app-module-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.74rem;
    white-space: nowrap;
}

.app-module-chevron {
    display: inline-block;
    font-size: 1rem;
    transition: transform var(--transition);
}

.app-module.is-collapsed .app-module-chevron {
    transform: rotate(-90deg);
}

.app-module-body {
    border-top: 1px solid var(--border);
    padding: 12px;
}

.chat-module-body {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* Media & Drawing containers */
#media-container {
    border-radius: var(--radius-md);
    overflow: hidden;
}

#drawing-container {
    border-radius: var(--radius-md);
    overflow: hidden;
}

/* ── Media module ─────────────────────────────────────────────────────── */
.media-wrap {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.media-controls {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    align-items: center;
}

.media-cam-select {
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text);
    border-radius: var(--radius-sm);
    padding: 6px 10px;
    font-size: 0.8rem;
    font-family: inherit;
    cursor: pointer;
    max-width: 180px;
    outline: none;
    transition: border-color var(--transition);
}

.media-cam-select:focus {
    border-color: var(--accent);
}

/* Active state for cam/mic buttons */
button.action.active {
    background: #16a34a;
    border-color: transparent;
    color: #fff;
}

button.action.active:hover {
    background: #15803d;
    box-shadow: 0 0 14px #16a34a44;
}

/* Video section */
.media-video-section {
    width: 100%;
}

/* Remote video: big, 16:9 */
.media-remote-box {
    position: relative;
    width: 100%;
    background: #000;
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border);
}

.media-remote-video {
    display: block;
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    background: #000;
}

/* Label overlay */
.media-label {
    position: absolute;
    bottom: 10px;
    left: 12px;
    font-size: 0.7rem;
    font-weight: 500;
    color: #ccc;
    background: rgba(0, 0, 0, 0.6);
    padding: 2px 8px;
    border-radius: 20px;
    pointer-events: none;
    backdrop-filter: blur(4px);
}

/* Local PiP overlay */
.media-pip {
    position: absolute;
    bottom: 14px;
    right: 14px;
    width: 28%;
    max-width: 180px;
    min-width: 100px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    border: 2px solid rgba(255,255,255,0.18);
    box-shadow: 0 4px 16px rgba(0,0,0,0.6);
    background: #000;
    transition: opacity var(--transition);
}

.media-pip:hover {
    opacity: 0.92;
}

.media-pip-video {
    display: block;
    width: 100%;
    aspect-ratio: 4 / 3;
    object-fit: cover;
}

/* PiP label sits inside .media-pip — override position */
.media-pip .media-label {
    bottom: 4px;
    left: 6px;
    font-size: 0.65rem;
}

/* Close button for PiP */
.media-pip-close {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    border: none;
    background: rgba(0,0,0,0.65);
    color: #fff;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: background var(--transition);
    backdrop-filter: blur(4px);
}

.media-pip-close:hover {
    background: rgba(239, 68, 68, 0.8);
}

/* ── Game module ──────────────────────────────────────────────────────── */

/*
 * Outer container. Matches the same border/radius/overflow pattern used
 * by #drawing-container so the panel blends into the room layout.
 */
#game-container {
    border-radius: var(--radius-md);
    overflow: hidden;
}

/* Flex column that stacks header, canvas, and legend. */
.game-panel {
    display: flex;
    flex-direction: column;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: var(--surface);
}

/* Header row — mirrors .drawing-toolbar */
.game-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    background: var(--surface-2);
    border-bottom: 1px solid var(--border);
    padding: 8px 14px;
    flex-wrap: wrap;
}

.game-panel-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text);
    letter-spacing: 0.02em;
}

/* Small keyboard hint that fades in the background */
.game-panel-hint {
    font-size: 0.7rem;
    color: var(--text-muted);
    white-space: nowrap;
}

/* The canvas stretches to fill the available width while preserving its
   intrinsic 600×380 aspect ratio. touch-action: none prevents scroll
   interference when arrow keys are captured. */
.game-canvas {
    display: block;
    width: 100%;
    height: auto;
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
    background: #0f1923; /* matches the canvas clear colour */
}

/* Legend row below the canvas */
.game-panel-legend {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    padding: 7px 14px;
    background: var(--surface-2);
    border-top: 1px solid var(--border);
}

.game-legend-entry {
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* ── Drawing module ───────────────────────────────────────────────────── */
.drawing-wrap {
    display: flex;
    flex-direction: column;
    gap: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.drawing-toolbar {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    background: var(--surface-2);
    border-bottom: 1px solid var(--border);
    padding: 8px 12px;
}

.drawing-color {
    width: 34px;
    height: 34px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    background: none;
    cursor: pointer;
    padding: 2px;
    flex-shrink: 0;
    transition: border-color var(--transition);
}

.drawing-color:hover {
    border-color: var(--accent);
}

.drawing-size-label {
    color: var(--text-muted);
    font-size: 0.75rem;
    display: flex;
    align-items: center;
    gap: 6px;
    user-select: none;
}

.drawing-size-range {
    width: 80px;
    accent-color: var(--accent);
    cursor: pointer;
    /* Override generic input styles */
    background: none !important;
    border: none !important;
    padding: 0 !important;
    box-shadow: none !important;
    width: 80px !important;
}

.drawing-btn {
    padding: 5px 12px !important;
    font-size: 0.775rem !important;
    flex-shrink: 0;
}

.drawing-canvas-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 900 / 540;
    background: #111;
    overflow: hidden;
    /* Evitar que el browser maneje gestos táctiles en toda el área */
    touch-action: none;
    -webkit-user-select: none;
    user-select: none;
}

/* drawCanvas ocupa todo el wrap, pointer-events desactivado (el cursorCanvas recibe input) */
canvas.drawing-canvas {
    display: block;
    width: 100%;
    height: 100%;
    pointer-events: none;
    -webkit-user-select: none;
    user-select: none;
}

/* cursorCanvas encima, recibe todos los eventos */
canvas.drawing-cursor {
    position: absolute;
    inset: 0;
    display: block;
    width: 100%;
    height: 100%;
    cursor: crosshair;
    touch-action: none;
    -webkit-user-select: none;
    user-select: none;
}

/* Log */
#log {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px;
    height: 240px;
    overflow-y: auto;
    font-family: "SF Mono", "Fira Code", "Consolas", monospace;
    font-size: 0.8rem;
    line-height: 1.7;
    white-space: pre-wrap;
    word-break: break-word;
    color: var(--text-muted);
    scroll-behavior: smooth;
}

#log::-webkit-scrollbar {
    width: 4px;
}

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

#log::-webkit-scrollbar-thumb {
    background: var(--text-dim);
    border-radius: 4px;
}

/* Send row */
.send-row {
    display: flex;
    gap: 8px;
}

.send-row input {
    flex: 1;
    min-width: 0;
}

/* ── Responsive ───────────────────────────────────────────────────────── */
@media (max-width: 520px) {
    body {
        padding: 10px 10px 32px;
    }

    .page-card {
        padding: 18px 14px;
        border-radius: var(--radius-md);
    }

    h2 {
        font-size: 1.2rem;
    }

    .lobby-subtitle {
        font-size: 0.72rem;
    }

    /* Room header: título en primera fila, status+botón en segunda */
    #room-header {
        flex-wrap: wrap;
        row-gap: 8px;
        padding: 12px 14px;
    }

    #room-title {
        font-size: 0.9rem;
        width: 100%;
    }

    #room-status {
        font-size: 0.68rem;
        margin-left: auto;
    }

    button.action {
        padding: 9px 13px;
        font-size: 0.825rem;
    }

    .app-module-header {
        padding: 11px 12px;
        align-items: flex-start;
    }

    .app-module-toggle-text {
        display: none;
    }

    .app-module-body {
        padding: 10px;
    }

    /* Log más compacto en mobile */
    #log {
        height: 180px;
        font-size: 0.75rem;
        padding: 12px;
    }

    /* Toolbar de dibujo: apilar en dos filas limpias */
    .drawing-toolbar {
        padding: 8px 10px;
        gap: 6px;
    }

    .drawing-size-range {
        width: 64px !important;
    }

    .drawing-btn {
        padding: 7px 12px !important;
        font-size: 0.8rem !important;
    }

    /* Botones táctiles más grandes para dedos */
    .drawing-color {
        width: 38px;
        height: 38px;
    }

    /* PiP más grande en mobile (pantalla chica) */
    .media-pip {
        width: 36%;
        bottom: 8px;
        right: 8px;
    }

    .media-pip-close {
        width: 26px;
        height: 26px;
        font-size: 16px;
    }

    /* Controles media más compactos */
    .media-controls {
        gap: 6px;
    }
}

@media (min-width: 640px) {
    #room-view {
        max-width: 700px;
    }
}