:root {
    --bg: #0b0d10;
    --surface: #12161b;
    --surface-2: #171c22;
    --surface-3: #1d232b;
    --border: #2a3038;
    --border-strong: #39414b;
    --text: #edf1f5;
    --muted: #9aa4af;
    --accent: #d4d8de;
    --accent-ink: #0f1318;
    --success: #66bb8a;
    --danger: #ef8c8c;
    --shadow: 0 20px 48px rgba(0, 0, 0, 0.28);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    letter-spacing: -0.01em;
}

.shell-header {
    background: rgba(11, 13, 16, 0.88);
    backdrop-filter: blur(12px);
}

.navbar-brand {
    letter-spacing: -0.03em;
}

.panel {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.inset-panel {
    background: var(--surface-2);
    box-shadow: none;
}

.hero-panel {
    position: relative;
    overflow: hidden;
}

.hero-panel::after {
    content: "";
    position: absolute;
    inset: 0;
    border: 1px solid rgba(255, 255, 255, 0.03);
    border-radius: inherit;
    pointer-events: none;
}

.display-title {
    font-size: clamp(2rem, 3vw, 3.5rem);
    line-height: 1.02;
    font-weight: 650;
    max-width: 12ch;
    letter-spacing: -0.05em;
}

.eyebrow,
.small-label {
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 0.72rem;
    font-weight: 600;
}

.lead,
.text-secondary,
.form-text,
.form-label,
.form-control::placeholder,
textarea::placeholder {
    color: var(--muted) !important;
}

.meta-pills,
.control-stack {
    display: grid;
    gap: var(--space-3);
}

.chip,
.badge-soft,
.value-pill,
.gamepad-state {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    border: 1px solid var(--border-strong);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text);
    border-radius: 999px;
    padding: 0.5rem 0.8rem;
    font-size: 0.85rem;
}

.badge-soft {
    padding: 0.45rem 0.7rem;
}

.spec-list {
    display: grid;
    gap: var(--space-3);
}

.spec-list > div {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.spec-list > div:last-child {
    border-bottom: 0;
    padding-bottom: 0;
}

.spec-list span,
.mini-stat span,
.preset-metrics span {
    color: var(--muted);
    font-size: 0.82rem;
}

.spec-list.compact {
    gap: var(--space-2);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    display: inline-block;
    margin-top: 4px;
}

.status-live {
    background: var(--success);
    box-shadow: 0 0 0 8px rgba(102, 187, 138, 0.12);
}

.status-idle {
    background: #66707a;
    box-shadow: 0 0 0 8px rgba(102, 112, 122, 0.12);
}

.recliner-stage {
    position: relative;
    background:
        radial-gradient(circle at 22% 18%, rgba(255, 255, 255, 0.08), transparent 28%),
        radial-gradient(circle at 78% 20%, rgba(212, 216, 222, 0.12), transparent 20%),
        linear-gradient(180deg, #12171d 0%, #0d1116 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    min-height: 420px;
    overflow: hidden;
    isolation: isolate;
    perspective: 1600px;
}

.recliner-stage::after {
    content: "";
    position: absolute;
    inset: auto 0 0;
    height: 38%;
    background: linear-gradient(180deg, transparent, rgba(0, 0, 0, 0.34));
    pointer-events: none;
}

.grid-fade,
.recliner-aurora {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.grid-fade {
    background-image:
        linear-gradient(to right, rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.72), transparent 95%);
    opacity: 0.8;
}

.recliner-aurora {
    background:
        radial-gradient(circle at 50% 72%, rgba(212, 216, 222, 0.08), transparent 32%),
        radial-gradient(circle at 58% 40%, rgba(255, 255, 255, 0.06), transparent 16%);
}

.axis-label,
.motion-indicator {
    position: absolute;
    top: 18px;
    color: var(--muted);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    z-index: 2;
}

.axis-label-left { left: 18px; }
.axis-label-right { right: 18px; }

.motion-indicator {
    left: 50%;
    transform: translateX(-50%);
    padding: 0.42rem 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 999px;
    background: rgba(10, 12, 15, 0.52);
    color: var(--text);
}

.recliner-figure {
    position: absolute;
    left: 50%;
    bottom: 26px;
    width: 430px;
    height: 320px;
    --figure-scale: 1;
    --drift-x: 0px;
    --drift-y: 0px;
    --shake-x: 4px;
    --shake-y: 2px;
    --shake-rotate: 0.7deg;
    --vibe-speed: 140ms;
    --glow-strength: 0.26;
    --glow-opacity: 0.54;
    transform: translateX(calc(-50% + var(--drift-x))) translateY(var(--drift-y)) scale(var(--figure-scale));
    transform-origin: center bottom;
    transition: transform 240ms ease;
    z-index: 1;
}

.recliner-rig,
.recliner-motion {
    position: absolute;
    inset: 0;
    transform-style: preserve-3d;
}

.recliner-rig {
    transform: rotateX(64deg) rotateZ(-29deg);
    transform-origin: center bottom;
}

.recliner-motion.is-vibrating.vibration-continuous {
    animation: rumble-continuous var(--vibe-speed) steps(2, end) infinite;
}

.recliner-motion.is-vibrating.vibration-pulse {
    animation: rumble-pulse 820ms cubic-bezier(0.34, 1.56, 0.64, 1) infinite;
}

.recliner-glow,
.recliner-floor,
.recliner-seat-pad,
.recliner-back-inner {
    position: absolute;
}

.recliner-glow {
    left: 76px;
    bottom: 32px;
    width: 270px;
    height: 130px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(212, 216, 222, 0.42) 0%, rgba(212, 216, 222, 0) 72%);
    filter: blur(18px);
    opacity: var(--glow-opacity);
    transform: translateZ(-42px);
    transition: opacity 180ms ease, filter 180ms ease;
}

.recliner-floor {
    left: 64px;
    bottom: 12px;
    width: 296px;
    height: 162px;
    border-radius: 52% 48% 44% 56% / 56% 54% 46% 44%;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.015));
    border: 1px solid rgba(255, 255, 255, 0.04);
    box-shadow: inset 0 -22px 44px rgba(0, 0, 0, 0.22);
    transform: translateZ(-30px);
}

.recliner-block {
    position: absolute;
    background: linear-gradient(180deg, #2a323d 0%, #171c22 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06), 0 18px 34px rgba(0, 0, 0, 0.22);
    transform-style: preserve-3d;
}

.recliner-block::before,
.recliner-block::after {
    content: "";
    position: absolute;
    pointer-events: none;
}

.recliner-block::before {
    left: 10px;
    right: 0;
    bottom: 100%;
    height: 18px;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0.05));
    clip-path: polygon(0 100%, 100% 100%, calc(100% - 10px) 0, 10px 0);
    opacity: 0.9;
}

.recliner-block::after {
    top: 8px;
    left: 100%;
    bottom: 0;
    width: 18px;
    background: linear-gradient(180deg, rgba(10, 12, 15, 0.44), rgba(255, 255, 255, 0.04));
    clip-path: polygon(0 0, 100% 10px, 100% 100%, 0 calc(100% - 8px));
}

.recliner-plinth {
    left: 138px;
    bottom: 52px;
    width: 126px;
    height: 28px;
    border-radius: 18px;
    transform: translateZ(10px);
}

.recliner-column {
    left: 182px;
    bottom: 80px;
    width: 38px;
    height: 72px;
    border-radius: 18px;
    transform: translateZ(22px);
}

.recliner-base {
    left: 154px;
    bottom: 106px;
    width: 110px;
    height: 52px;
    border-radius: 28px 28px 20px 20px;
    transform: translateZ(40px);
}

.recliner-seat {
    left: 144px;
    bottom: 152px;
    width: 142px;
    height: 82px;
    border-radius: 28px 26px 18px 18px;
    transform: translateZ(62px);
}

.recliner-seat-pad {
    left: 158px;
    bottom: 166px;
    width: 112px;
    height: 46px;
    border-radius: 20px 18px 16px 16px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.03));
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
    transform: translateZ(78px);
}

.recliner-arm {
    left: 124px;
    bottom: 160px;
    width: 28px;
    height: 102px;
    border-radius: 18px;
    transform: translateZ(64px);
}

.recliner-arm-secondary {
    left: 278px;
    bottom: 154px;
    height: 98px;
    transform: translateZ(34px);
}

.recliner-back {
    left: 114px;
    bottom: 194px;
    width: 92px;
    height: 142px;
    border-radius: 30px;
    transform-origin: right bottom;
    transform: translateZ(66px) rotate(calc(-6deg + (var(--angle) * 0.38deg) + (var(--back-angle) * 1deg)));
}

.recliner-back-inner {
    left: 130px;
    bottom: 210px;
    width: 60px;
    height: 104px;
    border-radius: 20px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.16), rgba(255, 255, 255, 0.03));
    border: 1px solid rgba(255, 255, 255, 0.08);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
    transform-origin: right bottom;
    transform: translateZ(82px) rotate(calc(-6deg + (var(--angle) * 0.38deg) + (var(--back-angle) * 1deg)));
}

.recliner-head {
    left: 124px;
    bottom: 308px;
    width: 74px;
    height: 38px;
    border-radius: 22px;
    transform-origin: right bottom;
    transform: translateZ(86px) rotate(calc(-10deg + (var(--angle) * 0.14deg) + (var(--head-angle) * 1deg)));
}

.recliner-leg {
    left: 284px;
    bottom: 166px;
    width: 58px;
    height: 118px;
    border-radius: 20px;
    transform-origin: left center;
    transform: translateZ(46px) rotate(calc(10deg + (var(--angle) * 0.34deg) + (var(--leg-angle) * 1deg)));
}

.recliner-footpad {
    left: 326px;
    bottom: 208px;
    width: 42px;
    height: 58px;
    border-radius: 18px;
    transform-origin: left center;
    transform: translateZ(30px) rotate(calc(10deg + (var(--angle) * 0.2deg) + (var(--leg-angle) * 1deg)));
}

.recliner-figure.is-vibrating .recliner-glow {
    opacity: 0.9;
    filter: blur(24px);
    animation: glow-pulse 760ms ease-in-out infinite;
}

.recliner-figure[data-pattern="continuous"].is-vibrating .recliner-glow {
    animation-duration: 220ms;
}

.angle-indicator {
    position: absolute;
    right: 12px;
    top: 18px;
    display: inline-flex;
    flex-direction: column;
    align-items: flex-end;
    padding: 12px 14px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-sm);
    background: rgba(11, 13, 16, 0.72);
    backdrop-filter: blur(10px);
    z-index: 2;
}

.angle-indicator span {
    font-size: 1.85rem;
    font-weight: 650;
    line-height: 1;
}

.angle-indicator small {
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.09em;
    margin-top: 4px;
}

@keyframes rumble-continuous {
    0% {
        transform: translate3d(calc(var(--shake-x) * -1), calc(var(--shake-y) * -1), 0) rotate(calc(var(--shake-rotate) * -1));
    }
    25% {
        transform: translate3d(var(--shake-x), 0, 0) rotate(calc(var(--shake-rotate) * 0.6));
    }
    50% {
        transform: translate3d(calc(var(--shake-x) * -0.65), var(--shake-y), 0) rotate(calc(var(--shake-rotate) * -0.5));
    }
    75% {
        transform: translate3d(calc(var(--shake-x) * 0.75), calc(var(--shake-y) * -1), 0) rotate(calc(var(--shake-rotate) * 0.3));
    }
    100% {
        transform: translate3d(calc(var(--shake-x) * -1), calc(var(--shake-y) * -1), 0) rotate(calc(var(--shake-rotate) * -1));
    }
}

@keyframes rumble-pulse {
    0%, 100% {
        transform: translate3d(0, 0, 0) scale(1);
    }
    12% {
        transform: translate3d(var(--shake-x), calc(var(--shake-y) * -1), 0) rotate(var(--shake-rotate));
    }
    20% {
        transform: translate3d(calc(var(--shake-x) * -1), var(--shake-y), 0) rotate(calc(var(--shake-rotate) * -1));
    }
    32% {
        transform: translate3d(calc(var(--shake-x) * 0.6), calc(var(--shake-y) * -0.4), 0);
    }
    44% {
        transform: translate3d(0, 0, 0) scale(1.015);
    }
}

@keyframes glow-pulse {
    0%, 100% {
        transform: translateZ(-42px) scale(0.96);
    }
    50% {
        transform: translateZ(-42px) scale(1.04);
    }
}

.stat-row {
    margin-top: -4px;
}

.mini-stat {
    height: 100%;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px;
}

.mini-stat strong {
    display: block;
    margin-top: 6px;
    font-size: 1rem;
}

.control-group {
    padding-bottom: var(--space-3);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.control-group:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.form-range::-webkit-slider-runnable-track {
    background: #242a32;
    height: 4px;
    border-radius: 999px;
}

.form-range::-webkit-slider-thumb {
    margin-top: -6px;
    width: 16px;
    height: 16px;
    background: var(--accent);
    border: 0;
}

.form-range::-moz-range-track {
    background: #242a32;
    height: 4px;
    border-radius: 999px;
}

.form-range::-moz-range-thumb {
    width: 16px;
    height: 16px;
    border: 0;
    background: var(--accent);
}

.form-control,
.form-select,
textarea {
    background: #0f1318 !important;
    border: 1px solid var(--border-strong) !important;
    color: var(--text) !important;
    border-radius: 10px !important;
    padding: 0.75rem 0.9rem !important;
}

.form-control:focus,
.form-select:focus,
textarea:focus,
.btn:focus,
.form-range:focus {
    box-shadow: 0 0 0 0.2rem rgba(212, 216, 222, 0.12) !important;
    border-color: #58616d !important;
}

.btn {
    border-radius: 10px;
    padding: 0.78rem 1rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.btn-light {
    background: var(--accent);
    color: var(--accent-ink);
    border-color: var(--accent);
}

.btn-light:hover,
.btn-light:focus {
    background: #e3e7eb;
    border-color: #e3e7eb;
    color: var(--accent-ink);
}

.btn-accent {
    background: #e6eaef;
    color: #11151a;
    border: 1px solid #e6eaef;
}

.btn-accent:hover,
.btn-accent:focus {
    background: #f2f4f6;
    border-color: #f2f4f6;
    color: #11151a;
}

.btn-outline-light {
    border-color: var(--border-strong);
}

.btn-link {
    color: #cdd3db;
}

.btn-link:hover,
.btn-link:focus {
    color: #f0f3f6;
}

.preset-list {
    display: grid;
    gap: var(--space-3);
}

.preset-card,
.empty-state {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px;
    background: rgba(255, 255, 255, 0.02);
}

.preset-card.is-active {
    border-color: #5c6570;
    background: rgba(255, 255, 255, 0.03);
}

.preset-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.alert-danger {
    background: rgba(239, 140, 140, 0.12);
    color: #ffd9d9;
}

code {
    color: #f4f7fa;
}

.preset-detail-specs > div {
    padding: 12px 0;
}

footer {
    background: rgba(255, 255, 255, 0.01);
}

@media (max-width: 991.98px) {
    .display-title {
        max-width: none;
    }

    .recliner-stage {
        min-height: 360px;
    }

    .recliner-figure {
        --figure-scale: 0.84;
        bottom: 8px;
    }
}

@media (max-width: 575.98px) {
    .recliner-stage {
        min-height: 300px;
    }

    .axis-label,
    .motion-indicator {
        top: 14px;
    }

    .motion-indicator {
        max-width: calc(100% - 128px);
        text-align: center;
        line-height: 1.25;
    }

    .recliner-figure {
        --figure-scale: 0.66;
        bottom: -18px;
    }

    .angle-indicator {
        right: 8px;
        top: 52px;
        padding: 10px 12px;
    }
}