/* ============================================================
   ChatBase — 2040
   Floating panel layout, switchable living backgrounds,
   welcome screen, command palette.
   Loads after liquid-glass.css.
   ============================================================ */

/* ---------- 1. Floating panel layout ---------- */
/* The old shell was edge-to-edge. Now every region is a
   detached slab hovering over the background. */
.app-container {
    padding: 14px;
    gap: 14px;
    background: transparent !important;
    box-sizing: border-box;
}

.sidebar {
    width: 254px !important;
    height: calc(100vh - 28px) !important;
    flex-shrink: 0;
    border-radius: var(--lg-r-xl) !important;
    padding: 18px 11px 12px !important;
    border: 1px solid var(--lg-rim) !important;
    box-shadow: var(--lg-specular), var(--lg-lift-3) !important;
}

.main-content {
    flex: 1;
    height: calc(100vh - 28px);
    border-radius: var(--lg-r-xl) !important;
    padding: 86px 32px 28px !important;
    background: rgba(255, 255, 255, 0.028) !important;
    -webkit-backdrop-filter: var(--lg-blur);
    backdrop-filter: var(--lg-blur);
    border: 1px solid var(--lg-rim-soft) !important;
    box-shadow: var(--lg-specular), var(--lg-lift-2);
    position: relative;
    overflow-y: auto;
}

/* Top bar becomes a floating pill docked inside the content slab */
.top-bar {
    position: fixed !important;
    top: 26px !important;
    left: 296px !important;
    right: 26px !important;
    height: 56px !important;
    border-radius: var(--lg-r-pill) !important;
    padding: 0 10px 0 20px !important;
    border: 1px solid var(--lg-rim) !important;
    box-shadow: var(--lg-specular), var(--lg-lift-2) !important;
    z-index: 120;
}

@media (max-width: 900px) {
    .app-container { padding: 0; gap: 0; }
    .sidebar { height: 100vh !important; border-radius: 0 !important; }
    .main-content { height: 100vh; border-radius: 0 !important; padding: 78px 16px 20px !important; }
    .top-bar { top: 10px !important; left: 10px !important; right: 10px !important; }
}

/* ---------- 2. Background engine ---------- */
/* Each theme repaints body::before. #bgFx adds extra layers
   (stars, grid, scanlines) that gradients alone can't do. */
#bgFx {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.8s var(--lg-ease);
}

/* — Aurora (default) — */
:root[data-bg="aurora"] body::before,
body::before {
    background:
        radial-gradient(38% 44% at 18% 16%, rgba(160, 107, 255, 0.32), transparent 62%),
        radial-gradient(34% 40% at 84% 22%, rgba(34, 211, 238, 0.24), transparent 60%),
        radial-gradient(44% 46% at 72% 84%, rgba(255, 95, 162, 0.20), transparent 64%),
        radial-gradient(40% 40% at 26% 88%, rgba(52, 232, 176, 0.16), transparent 62%);
}

/* — Nebula — */
:root[data-bg="nebula"] body::before {
    background:
        radial-gradient(50% 55% at 26% 24%, rgba(88, 52, 200, 0.48), transparent 66%),
        radial-gradient(42% 48% at 78% 32%, rgba(190, 60, 220, 0.30), transparent 62%),
        radial-gradient(56% 52% at 60% 88%, rgba(28, 60, 180, 0.36), transparent 68%);
}

:root[data-bg="nebula"] #bgFx {
    opacity: 1;
    background-image:
        radial-gradient(1.4px 1.4px at 12% 22%, #fff, transparent),
        radial-gradient(1.2px 1.2px at 38% 64%, rgba(255,255,255,0.85), transparent),
        radial-gradient(1.6px 1.6px at 63% 18%, #fff, transparent),
        radial-gradient(1.1px 1.1px at 82% 48%, rgba(255,255,255,0.75), transparent),
        radial-gradient(1.5px 1.5px at 27% 82%, #fff, transparent),
        radial-gradient(1.2px 1.2px at 71% 76%, rgba(255,255,255,0.8), transparent),
        radial-gradient(1.3px 1.3px at 91% 88%, #fff, transparent),
        radial-gradient(1px 1px at 52% 40%, rgba(255,255,255,0.7), transparent);
    background-size: 100% 100%;
    animation: fx-twinkle 5.5s ease-in-out infinite alternate;
}

@keyframes fx-twinkle {
    from { opacity: 0.45; }
    to   { opacity: 1; }
}

/* — Synthwave — */
:root[data-bg="synthwave"] body::before {
    background:
        linear-gradient(180deg, #12002e 0%, #3d0a5c 46%, #ff2d95 66%, #ff8a3d 78%, #0a0018 79%);
    filter: blur(0) !important;
}

:root[data-bg="synthwave"] #bgFx {
    opacity: 1;
    background-image:
        repeating-linear-gradient(90deg, rgba(255,45,149,0.5) 0 1px, transparent 1px 76px),
        repeating-linear-gradient(0deg,  rgba(255,45,149,0.5) 0 1px, transparent 1px 76px);
    background-position: center bottom;
    background-size: 100% 100%;
    transform: perspective(320px) rotateX(72deg);
    transform-origin: center 100%;
    top: 62%;
    animation: fx-grid 5s linear infinite;
}

@keyframes fx-grid {
    from { background-position-y: 0; }
    to   { background-position-y: 76px; }
}

/* — Ocean — */
:root[data-bg="ocean"] body::before {
    background:
        radial-gradient(48% 52% at 22% 20%, rgba(14, 165, 233, 0.36), transparent 64%),
        radial-gradient(44% 48% at 80% 40%, rgba(20, 230, 200, 0.26), transparent 62%),
        radial-gradient(60% 56% at 50% 92%, rgba(8, 60, 130, 0.44), transparent 70%);
}

/* — Ember — */
:root[data-bg="ember"] body::before {
    background:
        radial-gradient(46% 50% at 20% 82%, rgba(255, 90, 30, 0.40), transparent 64%),
        radial-gradient(42% 46% at 78% 70%, rgba(255, 40, 110, 0.32), transparent 62%),
        radial-gradient(52% 48% at 50% 12%, rgba(120, 20, 60, 0.38), transparent 66%);
}

/* — Matrix — */
:root[data-bg="matrix"] body::before {
    background:
        radial-gradient(52% 56% at 50% 30%, rgba(0, 255, 140, 0.16), transparent 68%),
        radial-gradient(60% 60% at 50% 100%, rgba(0, 120, 70, 0.20), transparent 70%);
}

:root[data-bg="matrix"] #bgFx {
    opacity: 1;
    background-image: repeating-linear-gradient(
        0deg, rgba(0, 255, 140, 0.055) 0 1px, transparent 1px 3px);
    animation: fx-scan 7s linear infinite;
}

@keyframes fx-scan {
    from { background-position-y: 0; }
    to   { background-position-y: 60px; }
}

/* — Void — */
:root[data-bg="void"] body::before {
    background: radial-gradient(58% 58% at 50% 42%, rgba(60, 64, 110, 0.24), transparent 72%);
}

/* ---------- 3. Accent engine ---------- */
:root[data-accent="blue"]   { --lg-violet: #3b82f6; --lg-indigo: #0ea5e9; --lg-cyan: #67e8f9; }
:root[data-accent="green"]  { --lg-violet: #10b981; --lg-indigo: #059669; --lg-cyan: #6ee7b7; }
:root[data-accent="orange"] { --lg-violet: #f59e0b; --lg-indigo: #f97316; --lg-cyan: #fcd34d; }
:root[data-accent="pink"]   { --lg-violet: #ec4899; --lg-indigo: #db2777; --lg-cyan: #f9a8d4; }
:root[data-accent="cyan"]   { --lg-violet: #06b6d4; --lg-indigo: #0891b2; --lg-cyan: #a5f3fc; }

/* ---------- 4. Welcome screen ---------- */
#welcomeScreen {
    position: fixed;
    inset: 0;
    z-index: 99990;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 26px;
    background: rgba(4, 5, 14, 0.86);
    -webkit-backdrop-filter: blur(46px) saturate(180%);
    backdrop-filter: blur(46px) saturate(180%);
    opacity: 0;
    animation: wc-in 0.75s var(--lg-ease) forwards;
    cursor: pointer;
}

#welcomeScreen.closing { animation: wc-out 0.7s var(--lg-ease) forwards; }

@keyframes wc-in  { from { opacity: 0; } to { opacity: 1; } }
@keyframes wc-out { from { opacity: 1; } to { opacity: 0; visibility: hidden; } }

/* The glow that breathes behind the greeting */
.wc-orb {
    position: absolute;
    width: min(74vw, 720px);
    height: min(74vw, 720px);
    border-radius: 50%;
    background:
        radial-gradient(circle at 38% 34%, var(--lg-violet), transparent 58%),
        radial-gradient(circle at 68% 68%, var(--lg-cyan), transparent 56%),
        radial-gradient(circle at 50% 88%, var(--lg-pink), transparent 60%);
    filter: blur(76px);
    opacity: 0.62;
    animation: wc-breathe 6.5s var(--lg-ease) infinite alternate;
    pointer-events: none;
}

@keyframes wc-breathe {
    from { transform: scale(0.9) rotate(0deg);   opacity: 0.45; }
    to   { transform: scale(1.12) rotate(22deg); opacity: 0.72; }
}

.wc-avatar {
    width: 92px;
    height: 92px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid rgba(255, 255, 255, 0.32);
    box-shadow: 0 0 46px rgba(160, 107, 255, 0.7), var(--lg-lift-3);
    position: relative;
    animation: wc-rise 0.95s var(--lg-spring) 0.1s both;
}

.wc-avatar-fallback {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    font-weight: 800;
    color: #fff;
    background: linear-gradient(135deg, var(--lg-violet), var(--lg-cyan));
    letter-spacing: -0.02em;
}

.wc-greet {
    position: relative;
    margin: 0;
    text-align: center;
    font-size: clamp(34px, 7vw, 68px);
    font-weight: 800;
    letter-spacing: -0.045em;
    line-height: 1.06;
    background: linear-gradient(120deg, #fff 18%, var(--lg-violet) 54%, var(--lg-cyan) 92%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: wc-rise 0.95s var(--lg-spring) 0.22s both;
}

.wc-sub {
    position: relative;
    margin: 0;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.01em;
    color: rgba(233, 237, 255, 0.6);
    animation: wc-rise 0.95s var(--lg-spring) 0.36s both;
}

.wc-hint {
    position: absolute;
    bottom: 46px;
    font-size: 12.5px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: rgba(233, 237, 255, 0.34);
    animation: wc-rise 0.9s var(--lg-spring) 0.9s both;
}

@keyframes wc-rise {
    from { opacity: 0; transform: translateY(22px) scale(0.96); }
    to   { opacity: 1; transform: none; }
}

/* ---------- 5. Command palette ---------- */
#cmdPalette {
    position: fixed;
    inset: 0;
    z-index: 99995;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 14vh;
    background: rgba(4, 5, 14, 0.62);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    animation: wc-in 0.24s var(--lg-ease) forwards;
}

#cmdPalette[hidden] { display: none; }

.cmd-box {
    width: min(92vw, 620px);
    max-height: 62vh;
    display: flex;
    flex-direction: column;
    border-radius: var(--lg-r-xl);
    background: rgba(14, 17, 40, 0.82);
    -webkit-backdrop-filter: var(--lg-blur-deep);
    backdrop-filter: var(--lg-blur-deep);
    border: 1px solid var(--lg-rim);
    box-shadow: var(--lg-specular), var(--lg-lift-3);
    overflow: hidden;
    animation: lg-sheet-in 0.36s var(--lg-spring) both;
}

.cmd-input {
    width: 100%;
    padding: 20px 24px !important;
    border: none !important;
    border-bottom: 1px solid var(--lg-rim-soft) !important;
    background: transparent !important;
    color: #fff !important;
    font-size: 17px !important;
    font-weight: 500;
    outline: none !important;
}

.cmd-list {
    list-style: none;
    margin: 0;
    padding: 8px;
    overflow-y: auto;
}

.cmd-item {
    display: flex;
    align-items: center;
    gap: 13px;
    padding: 11px 15px;
    border-radius: var(--lg-r-md);
    cursor: pointer;
    color: rgba(233, 237, 255, 0.82);
    font-size: 14.5px;
    font-weight: 550;
    transition: background 0.15s var(--lg-ease);
}

.cmd-item .cmd-icon { font-size: 17px; width: 24px; text-align: center; }

.cmd-item .cmd-kind {
    margin-left: auto;
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(233, 237, 255, 0.3);
}

.cmd-item.selected {
    background: linear-gradient(120deg,
        rgba(160, 107, 255, 0.32), rgba(34, 211, 238, 0.16));
    color: #fff;
    box-shadow: var(--lg-specular);
}

.cmd-empty {
    padding: 26px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}

/* ---------- 6. Background picker (settings) ---------- */
.bg-swatches {
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    justify-content: flex-end;
    max-width: 320px;
}

.bg-swatch {
    width: 46px;
    height: 34px;
    border-radius: 10px;
    border: 2px solid var(--lg-rim);
    cursor: pointer;
    padding: 0;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s var(--lg-spring), border-color 0.2s var(--lg-ease);
}

.bg-swatch:hover { transform: translateY(-3px) scale(1.07); }

.bg-swatch.active {
    border-color: #fff;
    box-shadow: 0 0 18px rgba(255, 255, 255, 0.45);
}

.bg-swatch[data-bg="aurora"]    { background: linear-gradient(135deg, #a06bff, #22d3ee, #ff5fa2); }
.bg-swatch[data-bg="nebula"]    { background: linear-gradient(135deg, #5834c8, #be3cdc, #1c3cb4); }
.bg-swatch[data-bg="synthwave"] { background: linear-gradient(180deg, #3d0a5c, #ff2d95, #ff8a3d); }
.bg-swatch[data-bg="ocean"]     { background: linear-gradient(135deg, #0ea5e9, #14e6c8, #083c82); }
.bg-swatch[data-bg="ember"]     { background: linear-gradient(135deg, #ff5a1e, #ff286e, #78143c); }
.bg-swatch[data-bg="matrix"]    { background: linear-gradient(135deg, #001a0e, #00ff8c, #007846); }
.bg-swatch[data-bg="void"]      { background: linear-gradient(135deg, #0a0b16, #3c4070); }

/* ---------- 7. Keyboard hint pill in the top bar ---------- */
.cmd-trigger {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 15px;
    border-radius: var(--lg-r-pill);
    border: 1px solid var(--lg-rim-soft);
    background: var(--lg-glass-1);
    color: rgba(233, 237, 255, 0.55);
    font-size: 13px;
    font-weight: 550;
    cursor: pointer;
    transition: all 0.24s var(--lg-ease);
}

.cmd-trigger:hover {
    background: var(--lg-glass-3);
    color: #fff;
    border-color: var(--lg-rim);
}

.cmd-trigger kbd {
    font-family: inherit;
    font-size: 11px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 6px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--lg-rim-soft);
}

@media (max-width: 900px) { .cmd-trigger { display: none; } }

/* ---------- 8. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
    .wc-orb, #bgFx { animation: none !important; }
}