/* ============================================
   YTLens — Design System & Styles
   YouTube Dark Theme · Claude-inspired Layout
   ============================================ */

/* ----- Design Tokens ----- */
:root {
    --bg-primary:    #0f0f0f;
    --bg-secondary:  #181818;
    --bg-elevated:   #212121;
    --bg-hover:      #2a2a2a;
    --bg-input:      #121212;
    --bg-surface:    #1a1a1a;

    --border-subtle:  rgba(255, 255, 255, 0.08);
    --border-default: rgba(255, 255, 255, 0.12);
    --border-focus:   rgba(255, 50, 50, 0.5);

    --accent:        #FF0000;
    --accent-hover:  #CC0000;
    --accent-dark:   #990000;
    --accent-glow:   rgba(255, 0, 0, 0.35);
    --accent-muted:  rgba(255, 0, 0, 0.12);

    --text-primary:   #f1f1f1;
    --text-secondary: #aaaaaa;
    --text-muted:     #717171;
    --text-inverse:   #ffffff;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'Cascadia Code', 'Fira Code', 'JetBrains Mono', 'Consolas', monospace;

    --radius-sm:  8px;
    --radius-md:  12px;
    --radius-lg:  16px;
    --radius-xl:  24px;
    --radius-full: 9999px;

    --sidebar-width:   280px;
    --chat-max-width:  800px;

    --transition-fast:    0.15s ease;
    --transition-default: 0.25s ease;
    --transition-slow:    0.4s cubic-bezier(0.4, 0, 0.2, 1);

    --shadow-sm:  0 1px 3px rgba(0,0,0,0.4);
    --shadow-md:  0 4px 16px rgba(0,0,0,0.5);
    --shadow-lg:  0 8px 32px rgba(0,0,0,0.6);
    --shadow-glow: 0 4px 20px var(--accent-glow);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow: hidden;
    height: 100vh;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code {
    font-family: var(--font-mono);
    background: var(--bg-elevated);
    padding: 0.15em 0.4em;
    border-radius: 4px;
    font-size: 0.88em;
    color: var(--accent);
}

/* ----- Scrollbar ----- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.12);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* ----- Utility Classes ----- */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    vertical-align: middle;
}

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

.pulse-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--accent-glow);
    animation: pulse 2s ease-in-out infinite;
}

.pulse-dot--sm {
    width: 6px;
    height: 6px;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ============================================
   SCREEN SYSTEM
   ============================================ */
.screen {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1;
}

.screen--active {
    display: flex;
    animation: screenFadeIn 0.3s ease;
}

@keyframes screenFadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

/* ============================================
   SCREEN 0: STUDIO CONSOLE (NON-SCROLLABLE DECK)
   ============================================ */
.studio-viewport {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: 
        radial-gradient(circle at 50% 45%, rgba(225, 29, 72, 0.22) 0%, rgba(140, 12, 35, 0.14) 30%, rgba(18, 14, 22, 0.98) 65%, #07080b 100%),
        radial-gradient(ellipse at 15% 18%, rgba(255, 77, 109, 0.14) 0%, transparent 45%),
        radial-gradient(ellipse at 85% 82%, rgba(255, 159, 10, 0.10) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 0%, rgba(225, 29, 72, 0.20) 0%, transparent 55%),
        #07080b;
    user-select: none;
}

/* Interactive Bokeh & Projector Particle Canvas */
.studio-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

/* Ambient Background Atmosphere & Volumetric Lighting */
.studio-ambient-glow {
    position: absolute;
    width: 1300px;
    height: 1300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(225, 29, 72, 0.22) 0%, rgba(255, 77, 109, 0.10) 45%, transparent 75%);
    filter: blur(150px);
    pointer-events: none;
    z-index: 2;
}

.studio-projector-beam {
    position: absolute;
    top: -30%;
    left: 50%;
    transform: translateX(-50%);
    width: 1700px;
    height: 1100px;
    background: radial-gradient(ellipse at 50% 0%, rgba(225, 29, 72, 0.24) 0%, rgba(255, 77, 109, 0.08) 45%, transparent 75%);
    filter: blur(65px);
    pointer-events: none;
    z-index: 2;
}

.studio-grid-overlay {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 38px 38px;
    pointer-events: none;
    z-index: 2;
    mask-image: radial-gradient(ellipse at 50% 50%, black 45%, transparent 85%);
    -webkit-mask-image: radial-gradient(ellipse at 50% 50%, black 45%, transparent 85%);
}

/* Console Deck Wrapper & Ambient Underglow */
.studio-console-wrapper {
    position: relative;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.studio-console__underglow {
    position: absolute;
    inset: -24px;
    background: radial-gradient(ellipse at 50% 50%, rgba(225, 29, 72, 0.44) 0%, rgba(255, 77, 109, 0.20) 48%, transparent 74%);
    border-radius: 40px;
    filter: blur(36px);
    pointer-events: none;
    z-index: 0;
    animation: underglowBreath 4s ease-in-out infinite alternate;
}

@keyframes underglowBreath {
    0% {
        opacity: 0.65;
        transform: scale(0.98);
    }
    100% {
        opacity: 1;
        transform: scale(1.02);
    }
}

/* Grand Studio Console Deck Chassis */
.studio-console {
    position: relative;
    z-index: 1;
    width: 1180px;
    max-width: 95vw;
    height: 585px;
    max-height: 88vh;
    display: grid;
    grid-template-columns: 1.28fr 0.94fr;
    background: linear-gradient(145deg, #101117 0%, #0b0c10 100%);
    backdrop-filter: blur(40px);
    -webkit-backdrop-filter: blur(40px);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 22px;
    box-shadow: 
        0 40px 110px rgba(0, 0, 0, 0.95),
        0 0 60px rgba(225, 29, 72, 0.12),
        inset 0 1px 0 rgba(255, 255, 255, 0.18);
    overflow: hidden;
    user-select: text;
}

/* Cursor-Tracking Dynamic Spotlight Border - YouTube Cinema Red & Rose */
.studio-console__spotlight {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1.5px;
    background: radial-gradient(480px circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(255, 77, 109, 0.8), rgba(225, 29, 72, 0.25) 35%, transparent 60%);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    pointer-events: none;
    z-index: 3;
    transition: opacity 0.25s ease;
    opacity: 0.9;
}

/* Top Rim Accent Light - Cinema Crimson & Rose Gold */
.studio-console__rim {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, rgba(255, 77, 109, 0.6) 25%, #FF1A35 50%, rgba(255, 159, 10, 0.5) 75%, transparent 100%);
    z-index: 2;
}

/* Left Panel: AI Video Monitor & Telemetry */
.studio-monitor {
    padding: 1.7rem 1.9rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    border-right: 1px solid rgba(255, 255, 255, 0.12);
    background: linear-gradient(180deg, #111218 0%, #0c0d12 100%);
}

.monitor-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.monitor-rec {
    display: flex;
    align-items: center;
    gap: 0.55rem;
    background: rgba(255, 0, 0, 0.08);
    border: 1px solid rgba(255, 0, 0, 0.25);
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
}

.rec-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #FF0000;
    box-shadow: 0 0 10px #FF0000;
    animation: recBlink 1.4s ease-in-out infinite;
}

@keyframes recBlink {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.3; transform: scale(0.85); }
}

.rec-label {
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    color: #ff5555;
    text-transform: uppercase;
    font-family: var(--font-mono);
}

.monitor-badges {
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.stream-badge {
    font-size: 0.62rem;
    font-family: var(--font-mono);
    font-weight: 700;
    color: #e2e8f0;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 5px;
    padding: 0.15rem 0.48rem;
    letter-spacing: 0.04em;
}

.monitor-timecode {
    font-size: 0.74rem;
    font-weight: 700;
    color: #e2e8f0;
    font-family: var(--font-mono);
    letter-spacing: 0.06em;
    background: #181922;
    border: 1px solid rgba(255, 255, 255, 0.16);
    padding: 0.25rem 0.65rem;
    border-radius: 6px;
}

/* =======================================================
   CENTERPIECE: Cinematic Soundwave Visualizer Screen
   ======================================================= */
.cinematic-visualizer-screen {
    position: relative;
    background: 
        radial-gradient(circle at 50% 45%, rgba(225, 29, 72, 0.16) 0%, rgba(15, 16, 24, 0.95) 75%),
        linear-gradient(145deg, #141622 0%, #0b0c12 100%);
    border: 1px solid rgba(255, 255, 255, 0.16);
    border-radius: 14px;
    height: 252px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 1.1rem 1.25rem 0.65rem;
    overflow: hidden;
    box-shadow: 
        inset 0 4px 24px rgba(0, 0, 0, 0.9),
        0 4px 18px rgba(0, 0, 0, 0.45);
}

.screen-glare {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 48%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, transparent 100%);
    pointer-events: none;
    z-index: 3;
}

.screen-scanlines {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(0deg, rgba(0, 0, 0, 0.25), rgba(0, 0, 0, 0.25) 1px, transparent 1px, transparent 2px);
    pointer-events: none;
    z-index: 2;
    opacity: 0.5;
}

.visualizer-ambient-aura {
    position: absolute;
    top: 35%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 320px;
    height: 140px;
    background: radial-gradient(ellipse, rgba(225, 29, 72, 0.28) 0%, rgba(255, 77, 109, 0.12) 45%, transparent 70%);
    filter: blur(32px);
    pointer-events: none;
    z-index: 1;
    animation: auraPulse 3.5s ease-in-out infinite alternate;
}

@keyframes auraPulse {
    0% { transform: translate(-50%, -50%) scale(0.92); opacity: 0.6; }
    100% { transform: translate(-50%, -50%) scale(1.08); opacity: 1; }
}

.visualizer-content {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
}

/* 28-Bar Organic Fluid Waveform Visualizer */
.visualizer-bars-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.4rem 0 0.2rem;
}

.visualizer-bars {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 135px;
    gap: 4px;
}

.vbar {
    flex: 1;
    max-width: 9px;
    height: var(--h, 50%);
    min-height: 8px;
    border-radius: 4px;
    background: linear-gradient(180deg, #FF9F0A 0%, #FF4D6D 45%, #E11D48 100%);
    box-shadow: 0 0 10px rgba(225, 29, 72, 0.45);
    transform-origin: bottom center;
    animation: waveBounce 1.5s ease-in-out infinite alternate;
    animation-delay: var(--d, 0s);
    transition: filter 0.2s ease;
}

.vbar:hover {
    filter: brightness(1.35) drop-shadow(0 0 12px #FF4D6D);
}

@keyframes waveBounce {
    0% {
        transform: scaleY(0.38);
        opacity: 0.75;
    }
    50% {
        transform: scaleY(1.06);
        opacity: 1;
    }
    100% {
        transform: scaleY(0.52);
        opacity: 0.85;
    }
}

/* Live Grounding Subtitle Ticker */
.transcript-ticker {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(10, 11, 16, 0.88);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 999px;
    padding: 0.28rem 0.85rem;
    max-width: 96%;
    margin: 0.3rem auto 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.5);
}

.ticker-dot {
    color: #FF1A35;
    font-size: 0.55rem;
    animation: recBlink 1s ease-in-out infinite;
}

.ticker-text {
    font-size: 0.66rem;
    font-family: var(--font-mono);
    color: #e2e8f0;
    letter-spacing: 0.02em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: opacity 0.3s ease;
}

/* Video Scrub Progress Bar with Chapters */
.video-scrub-bar {
    position: relative;
    width: 100%;
    height: 5px;
    background: rgba(255, 255, 255, 0.12);
    border-radius: 3px;
    margin-top: 0.55rem;
    z-index: 2;
}

.scrub-chapter {
    position: absolute;
    top: -3px;
    width: 2px;
    height: 11px;
    background: rgba(255, 255, 255, 0.45);
    border-radius: 1px;
    z-index: 3;
    transition: background 0.2s ease, transform 0.2s ease;
}

.scrub-chapter:hover {
    background: #FF4D6D;
    transform: scaleY(1.3);
}

.video-scrub-progress {
    height: 100%;
    background: linear-gradient(90deg, #E11D48, #FF4D6D, #FF9F0A);
    border-radius: 3px;
    box-shadow: 0 0 10px rgba(255, 77, 109, 0.85);
    transition: width 0.3s linear;
}

.video-scrub-handle {
    position: absolute;
    top: 50%;
    width: 10px;
    height: 10px;
    background: #ffffff;
    border: 2px solid #FF1A35;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 8px #FF1A35;
    transition: left 0.3s linear;
}

/* =======================================================
   BOTTOM TIER: 3 Sleek Product Capability Highlight Cards
   ======================================================= */
.capability-deck {
    display: flex;
    flex-direction: column;
    gap: 0.55rem;
    margin-top: 0.75rem;
}

.capability-card {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.65rem 0.95rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0%, rgba(20, 22, 32, 0.6) 100%);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 11px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 
        0 4px 14px rgba(0, 0, 0, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
    transition: transform 0.22s cubic-bezier(0.2, 0, 0, 1), 
                border-color 0.22s ease, 
                box-shadow 0.22s ease,
                background 0.22s ease;
    cursor: default;
}

.capability-card:hover {
    transform: translateY(-2px);
    border-color: rgba(255, 77, 109, 0.45);
    background: linear-gradient(135deg, rgba(255, 77, 109, 0.08) 0%, rgba(26, 28, 42, 0.75) 100%);
    box-shadow: 
        0 8px 24px rgba(0, 0, 0, 0.55),
        0 0 20px rgba(225, 29, 72, 0.22),
        inset 0 1px 0 rgba(255, 255, 255, 0.16);
}

.capability-card__icon-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, rgba(225, 29, 72, 0.18) 0%, rgba(255, 77, 109, 0.10) 100%);
    border: 1px solid rgba(255, 77, 109, 0.28);
    color: #FF4D6D;
    flex-shrink: 0;
    transition: all 0.22s ease;
}

.capability-card:hover .capability-card__icon-wrap {
    background: linear-gradient(135deg, rgba(225, 29, 72, 0.35) 0%, rgba(255, 77, 109, 0.25) 100%);
    border-color: rgba(255, 77, 109, 0.6);
    color: #ffffff;
    box-shadow: 0 0 12px rgba(255, 77, 109, 0.5);
}

.capability-card__icon {
    display: block;
}

.capability-card__body {
    display: flex;
    flex-direction: column;
    gap: 0.12rem;
    min-width: 0;
}

.capability-card__title {
    font-size: 0.78rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.01em;
    line-height: 1.2;
}

.capability-card__desc {
    font-size: 0.68rem;
    color: #94a3b8;
    line-height: 1.3;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.capability-card:hover .capability-card__desc {
    color: #cbd5e1;
}

/* Right Panel: Authentication Terminal */
.studio-auth {
    padding: 2.4rem 2.2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    background: linear-gradient(180deg, #121319 0%, #0d0e13 100%);
}

.studio-auth__brand {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.studio-auth__logo {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: linear-gradient(135deg, #FF0000 0%, #CC0000 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(255, 0, 0, 0.45);
    flex-shrink: 0;
}

.studio-auth__brand-text {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.brand-title {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: #ffffff;
    line-height: 1;
}

.brand-title--muted {
    color: #94a3b8;
    font-weight: 400;
}

.brand-badge {
    font-size: 0.58rem;
    font-family: var(--font-mono);
    font-weight: 700;
    color: #ff5555;
    background: rgba(255, 0, 0, 0.12);
    border: 1px solid rgba(255, 0, 0, 0.28);
    border-radius: 999px;
    padding: 0.15rem 0.5rem;
    letter-spacing: 0.06em;
}

.studio-auth__header {
    text-align: left;
    margin-top: 0.4rem;
}

.auth-heading {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    color: #ffffff;
    line-height: 1.2;
    margin-bottom: 0.25rem;
}

.auth-desc {
    font-size: 0.86rem;
    color: #94a3b8;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.05rem;
}

.console-input {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    text-align: left;
}

.console-input__label {
    font-size: 0.66rem;
    font-family: var(--font-mono);
    font-weight: 800;
    letter-spacing: 0.1em;
    color: #94a3b8;
}

.console-input__wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.console-input__icon {
    position: absolute;
    left: 1rem;
    color: #8c93a8;
    display: flex;
    align-items: center;
    pointer-events: none;
    transition: color 0.2s ease;
}

.console-input__field {
    width: 100%;
    padding: 0.82rem 1rem 0.82rem 2.75rem;
    background: #181923;
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 11px;
    color: #ffffff;
    font-size: 0.92rem;
    font-family: var(--font-family);
    outline: none;
    box-shadow: 
        inset 0 2px 5px rgba(0, 0, 0, 0.65),
        0 1px 0 rgba(255, 255, 255, 0.06);
    transition: all 0.2s ease;
}

.console-input__field:focus {
    border-color: #FF0000;
    background: #1c1d29;
    box-shadow: 
        0 0 0 3px rgba(255, 0, 0, 0.25),
        inset 0 2px 5px rgba(0, 0, 0, 0.65);
}

.console-input__wrap:focus-within .console-input__icon {
    color: #ff4d4d;
}

.console-input__field::placeholder {
    color: #64748b;
}

.console-input__toggle {
    position: absolute;
    right: 0.8rem;
    background: transparent;
    border: none;
    color: #8c93a8;
    cursor: pointer;
    padding: 0.35rem;
    display: flex;
    align-items: center;
    border-radius: 5px;
    transition: all 0.15s ease;
}

.console-input__toggle:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.06);
}

.console-btn {
    width: 100%;
    padding: 0.88rem;
    margin-top: 0.45rem;
    background: linear-gradient(135deg, #FF0000 0%, #D50000 100%);
    border: none;
    border-radius: 11px;
    color: #fff;
    font-size: 0.94rem;
    font-weight: 700;
    font-family: var(--font-family);
    letter-spacing: 0.02em;
    cursor: pointer;
    box-shadow: 
        0 5px 22px rgba(255, 0, 0, 0.42),
        inset 0 1px 0 rgba(255, 255, 255, 0.3);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.console-btn:hover:not(:disabled) {
    background: linear-gradient(135deg, #FF1A1A 0%, #B71C1C 100%);
    box-shadow: 
        0 7px 28px rgba(255, 0, 0, 0.58),
        inset 0 1px 0 rgba(255, 255, 255, 0.4);
    transform: translateY(-1px);
}

.console-btn:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

.btn-keyhint {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 0.4rem;
    font-size: 0.75rem;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    padding: 0.05rem 0.4rem;
    font-family: var(--font-mono);
    line-height: 1.2;
}

/* Unified Enterprise Security Pill */
.console-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    background: #171822;
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 10px;
    padding: 0.55rem 0.8rem;
    margin-top: 0.95rem;
    font-size: 0.72rem;
    font-weight: 600;
    color: #cbd5e1;
    text-align: center;
    font-family: var(--font-family);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
}

.console-note .note-lock {
    color: #ff4444;
    flex-shrink: 0;
}

/* Responsive Console Viewport Rules */
@media (max-width: 1100px) {
    .cinematic-visualizer-screen {
        height: 230px;
    }
    .capability-card {
        padding: 0.55rem 0.8rem;
    }
    .capability-card__desc {
        font-size: 0.64rem;
    }
}

@media (max-width: 860px) {
    .studio-console {
        grid-template-columns: 1fr;
        width: 440px;
        max-width: 92vw;
        height: auto;
        max-height: 92vh;
    }

    .studio-monitor {
        display: none;
    }

    .studio-auth {
        padding: 2.2rem 1.8rem;
    }
}

@media (max-width: 480px) {
    .studio-console {
        width: 100%;
        max-width: 94vw;
        border-radius: 16px;
    }

    .studio-auth {
        padding: 1.8rem 1.3rem;
    }

    .auth-heading {
        font-size: 1.35rem;
    }
}

/* ============================================
   SCREEN 1: VIDEO INPUT
   ============================================ */
.video {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
    padding-top: 0;
    background: var(--bg-primary);
    overflow-y: auto;
}

.video__header {
    width: 100%;
    max-width: 860px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.2rem 0;
    margin-bottom: 1rem;
}

.video__header-logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.video__header-icon {
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    border-radius: var(--radius-sm);
    box-shadow: 0 2px 10px var(--accent-glow);
}

.video__header-title {
    font-size: 1.2rem;
    font-weight: 900;
    letter-spacing: -0.02em;
    line-height: 1;
    color: var(--text-primary);
}

.video__header-title--muted {
    color: var(--text-muted);
    font-weight: 300;
}

.video__header-sub {
    font-size: 0.65rem;
    font-weight: 500;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-top: 0.2rem;
}

.video__logout-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.video__logout-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-default);
}

.video__card {
    width: 100%;
    max-width: 860px;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: 2rem;
    background: var(--bg-secondary);
}

.video__card-indicator {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 1.4rem;
    padding: 0.6rem 1rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    width: fit-content;
}

.video__label {
    display: block;
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 0.4rem;
}

.video__input {
    width: 100%;
    padding: 0.7rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: var(--font-family);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.video__input:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(255,50,50,0.08);
}

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

.video__input-group {
    margin-bottom: 1rem;
}

.video__btn {
    width: 100%;
    padding: 0.75rem;
    background: rgba(255,255,255,0.06);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.video__btn:hover:not(:disabled) {
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.2);
}

.video__btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.video__btn--secondary {
    margin-top: 0.8rem;
}

.video__secured {
    margin-top: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-align: center;
    letter-spacing: 0.02em;
}

/* Fallback */
.video__fallback {
    width: 100%;
    max-width: 860px;
    margin-top: 1.2rem;
}

.video__fallback-alert {
    padding: 0.8rem 1rem;
    background: rgba(255, 180, 0, 0.1);
    border: 1px solid rgba(255, 180, 0, 0.25);
    border-radius: var(--radius-sm);
    color: #ffb400;
    font-size: 0.88rem;
    margin-bottom: 0.8rem;
}

.video__fallback-instructions {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 0.8rem;
}

.video__fallback-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.92rem;
    font-family: var(--font-family);
    resize: vertical;
    outline: none;
    min-height: 120px;
    transition: border-color var(--transition-fast);
}

.video__fallback-textarea:focus {
    border-color: var(--border-focus);
}

/* ============================================
   SCREEN 2: CHAT INTERFACE
   ============================================ */
.chat {
    display: flex;
    height: 100vh;
    width: 100%;
    background: var(--bg-primary);
}

/* ----- Sidebar ----- */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transition: transform var(--transition-slow), width var(--transition-slow);
    z-index: 20;
}

.sidebar__inner {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 1rem;
    overflow-y: auto;
}

.sidebar__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: 1rem;
}

.sidebar__logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.sidebar__logo-icon {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    border-radius: 7px;
    box-shadow: 0 2px 8px var(--accent-glow);
}

.sidebar__logo-text {
    font-size: 0.88rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: var(--text-primary);
    display: block;
    line-height: 1;
}

.sidebar__logo-text--muted {
    color: var(--text-muted);
    font-weight: 400;
}

.sidebar__logo-sub {
    font-size: 0.6rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
    display: block;
    margin-top: 0.15rem;
}

.sidebar__close {
    display: none;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.sidebar__close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

/* Video Info */
.sidebar__video {
    margin-bottom: 1rem;
}

.sidebar__thumbnail-wrap {
    position: relative;
    margin-bottom: 0.8rem;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.sidebar__thumbnail {
    width: 100%;
    height: auto;
    aspect-ratio: 16/9;
    object-fit: cover;
    display: block;
    border-radius: var(--radius-md);
}

.sidebar__badge {
    position: absolute;
    top: 0.5rem;
    left: 0.5rem;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    background: rgba(0,0,0,0.65);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 5px;
    padding: 0.2rem 0.5rem;
    font-size: 0.6rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.85);
}

.sidebar__title {
    font-size: 0.88rem;
    font-weight: 600;
    line-height: 1.4;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.sidebar__link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.78rem;
    color: var(--text-muted);
    transition: color var(--transition-fast);
}

.sidebar__link:hover {
    color: var(--text-primary);
    text-decoration: none;
}

/* Actions */
.sidebar__actions {
    border-top: 1px solid var(--border-subtle);
    padding-top: 1rem;
    margin-top: auto;
}

.sidebar__action-btn {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    width: 100%;
    padding: 0.6rem 0.8rem;
    background: transparent;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-weight: 500;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sidebar__action-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-default);
    color: var(--text-primary);
}

.sidebar__action-btn--danger:hover {
    color: var(--accent);
    border-color: var(--accent-muted);
}

.sidebar__footer {
    margin-top: 0.6rem;
}

/* Sidebar overlay (mobile) */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.6);
    z-index: 15;
}

/* ----- Main Content ----- */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    position: relative;
}

/* Top Bar */
.topbar {
    display: flex;
    align-items: center;
    padding: 0.6rem 1rem;
    border-bottom: 1px solid var(--border-subtle);
    background: var(--bg-secondary);
    flex-shrink: 0;
}

.topbar__menu {
    display: none;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast);
}

.topbar__menu:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.topbar__title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin: 0 auto;
}

.topbar__spacer {
    width: 36px;
}

/* ----- Messages ----- */
.messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem 1rem;
    scroll-behavior: smooth;
}

.messages__container {
    max-width: var(--chat-max-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Welcome State */
.welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4rem 2rem;
    min-height: 50vh;
}

.welcome__icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-muted);
    border-radius: var(--radius-lg);
    margin-bottom: 1.2rem;
}

.welcome__title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.4rem;
}

.welcome__subtitle {
    font-size: 0.92rem;
    color: var(--text-muted);
    max-width: 400px;
    margin-bottom: 1.5rem;
}

.welcome__suggestions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
}

.welcome__chip {
    padding: 0.5rem 1rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 0.82rem;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.welcome__chip:hover {
    background: var(--bg-hover);
    border-color: rgba(255,255,255,0.2);
    color: var(--text-primary);
}

/* Message Bubbles */
.message {
    display: flex;
    gap: 0.8rem;
    align-items: flex-start;
    animation: messageSlideIn 0.3s ease;
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message__avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    margin-top: 2px;
}

.message--user .message__avatar {
    background: var(--bg-elevated);
    color: var(--text-secondary);
}

.message--assistant .message__avatar {
    background: var(--accent-muted);
    color: var(--accent);
}

.message__body {
    flex: 1;
    min-width: 0;
}

.message__role {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    margin-bottom: 0.3rem;
}

.message--user .message__role { color: var(--text-secondary); }
.message--assistant .message__role { color: var(--accent); }

.message__content {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-primary);
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.message__content p { margin-bottom: 0.8rem; }
.message__content p:last-child { margin-bottom: 0; }

.message__content ul, .message__content ol {
    margin: 0.5rem 0 0.8rem 1.5rem;
}

.message__content li {
    margin-bottom: 0.3rem;
}

.message__content strong {
    color: var(--text-primary);
    font-weight: 600;
}

.message__content blockquote {
    border-left: 3px solid var(--accent);
    padding-left: 1rem;
    margin: 0.8rem 0;
    color: var(--text-secondary);
}

.message__content table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.8rem 0;
    font-size: 0.88rem;
}

.message__content th, .message__content td {
    padding: 0.5rem 0.8rem;
    border: 1px solid var(--border-default);
    text-align: left;
}

.message__content th {
    background: var(--bg-elevated);
    font-weight: 600;
}

/* Code Blocks */
.message__content pre {
    position: relative;
    margin: 0.8rem 0;
    border-radius: var(--radius-md);
    overflow: hidden;
    background: #161b22;
    border: 1px solid var(--border-subtle);
}

.message__content pre code {
    display: block;
    padding: 1rem 1.2rem;
    background: none;
    font-size: 0.85rem;
    line-height: 1.6;
    color: #e6edf3;
    overflow-x: auto;
    border-radius: 0;
}

.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.4rem 0.8rem;
    background: rgba(255,255,255,0.04);
    border-bottom: 1px solid var(--border-subtle);
}

.code-lang {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.code-copy-btn {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0.5rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.7rem;
    font-family: var(--font-family);
    cursor: pointer;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.code-copy-btn:hover {
    background: rgba(255,255,255,0.08);
    color: var(--text-primary);
}

/* Message Actions */
.message__actions {
    display: flex;
    gap: 0.3rem;
    margin-top: 0.4rem;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.message:hover .message__actions {
    opacity: 1;
}

.message__copy-btn {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.3rem 0.6rem;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    color: var(--text-muted);
    font-size: 0.72rem;
    font-family: var(--font-family);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.message__copy-btn:hover {
    background: var(--bg-hover);
    border-color: var(--border-subtle);
    color: var(--text-primary);
}

/* Typing Cursor */
.typing-cursor::after {
    content: '';
    display: inline-block;
    width: 2px;
    height: 1em;
    background: var(--accent);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: blink 0.7s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* ----- Input Bar ----- */
.input-bar {
    flex-shrink: 0;
    padding: 0.8rem 1rem 0.6rem;
    background: var(--bg-primary);
}

.input-bar__container {
    max-width: var(--chat-max-width);
    margin: 0 auto;
}

.input-bar__form {
    display: flex;
    align-items: flex-end;
    gap: 0.5rem;
    padding: 0.5rem 0.6rem 0.5rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-bar__form:focus-within {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(255,50,50,0.06);
}

.input-bar__textarea {
    flex: 1;
    padding: 0.45rem 0;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-family: var(--font-family);
    line-height: 1.5;
    resize: none;
    outline: none;
    max-height: 150px;
    overflow-y: auto;
    field-sizing: content;
}

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

.input-bar__send,
.input-bar__stop {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.input-bar__send {
    background: var(--accent);
}

.input-bar__send:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: scale(1.05);
}

.input-bar__send:disabled {
    background: var(--bg-elevated);
    opacity: 0.5;
    cursor: not-allowed;
}

.input-bar__stop {
    background: var(--bg-elevated);
    border: 1px solid var(--border-default);
}

.input-bar__stop:hover {
    background: var(--bg-hover);
    border-color: rgba(255,255,255,0.2);
}

.input-bar__disclaimer {
    text-align: center;
    font-size: 0.72rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    letter-spacing: 0.01em;
}

/* ============================================
   TOAST NOTIFICATIONS
   ============================================ */
#toast-container {
    position: fixed;
    top: 1.2rem;
    right: 1.2rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    padding: 0.75rem 1.2rem;
    border-radius: var(--radius-md);
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--text-primary);
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s ease;
    max-width: 380px;
}

.toast--error {
    background: #2d1215;
    border: 1px solid rgba(255, 50, 50, 0.35);
}

.toast--success {
    background: #122d15;
    border: 1px solid rgba(50, 200, 50, 0.35);
}

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

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        transform: translateX(-100%);
        z-index: 20;
        box-shadow: none;
    }

    .sidebar--open {
        transform: translateX(0);
        box-shadow: var(--shadow-lg);
    }

    .sidebar__close {
        display: flex;
    }

    .sidebar-overlay--visible {
        display: block;
    }

    .topbar__menu {
        display: flex;
    }

    .topbar__spacer {
        display: none;
    }

    .topbar__title {
        margin: 0;
        margin-left: 0.5rem;
    }

    .welcome {
        padding: 2rem 1rem;
    }

    .welcome__suggestions {
        flex-direction: column;
        align-items: stretch;
    }
}

@media (max-width: 480px) {
    .login__card {
        padding: 0 0.5rem;
    }

    .video__card {
        padding: 1.2rem;
    }

    .welcome__title {
        font-size: 1.15rem;
    }
}