:root {
    --bg-dark: #0f1117;
    --text: #ffffff;
    --muted: rgba(255, 255, 255, 0.93);
    --soft-text: rgba(255, 255, 255, 0.9);
    --hint-text: rgba(255, 255, 255, 0.8);
    --panel: rgba(12, 14, 20, 0.56);
    --panel-strong: rgba(12, 14, 20, 0.72);
    --panel-border: rgba(255, 255, 255, 0.14);
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.38);
    --red-1: #ff4a2f;
    --red-2: #d91f11;
    --red-3: #8f0d07;
    --blue: #61a7ff;
    --ok: #39d98a;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
    background: #0b0d12;
    color: var(--text);
}

body {
    font-family: "Inter", system-ui, sans-serif;
    background:
        linear-gradient(
            180deg,
            rgba(6, 8, 12, 0.42) 0%,
            rgba(8, 10, 15, 0.48) 24%,
            rgba(8, 10, 15, 0.58) 58%,
            rgba(7, 8, 11, 0.82) 100%
        ),
        linear-gradient(
            90deg,
            rgba(255, 118, 20, 0.2) 0%,
            rgba(18, 25, 42, 0.1) 40%,
            rgba(46, 93, 170, 0.16) 100%
        ),
        url("bg.jpg") center bottom / cover no-repeat fixed;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    background:
        radial-gradient(circle at 22% 28%, rgba(255, 159, 54, 0.22), transparent 28%),
        radial-gradient(circle at 78% 22%, rgba(87, 147, 255, 0.16), transparent 26%);
    pointer-events: none;
}

.page {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    padding: 28px 18px 40px;
}

.content {
    width: min(100%, 1300px);
    margin: 0 auto;
}

.hero {
    text-align: center;
    margin-bottom: 22px;
}

.rr {
    margin: 0;
    font-family: "Orbitron", "Russo One", sans-serif;
    font-size: clamp(64px, 10vw, 120px);
    font-weight: 900;
    line-height: 0.82;
    letter-spacing: 0.04em;
    color: #fff;
    text-shadow:
        0 1px 0 rgba(255, 255, 255, 0.78),
        0 6px 16px rgba(0, 0, 0, 0.46),
        0 20px 42px rgba(0, 0, 0, 0.38);
    transform: skewX(-8deg);
}

.title {
    margin: 10px 0 0;
    font-family: "Orbitron", "Russo One", sans-serif;
    font-size: clamp(24px, 4vw, 48px);
    font-weight: 800;
    line-height: 1;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.92);
    text-shadow:
        0 1px 0 rgba(255, 255, 255, 0.24),
        0 3px 12px rgba(0, 0, 0, 0.4),
        0 14px 28px rgba(0, 0, 0, 0.24);
    transform: skewX(-8deg);
}

.subtitle {
    margin: 18px auto 0;
    max-width: 760px;
    font-size: clamp(16px, 2vw, 24px);
    line-height: 1.45;
    font-weight: 500;
    color: var(--muted);
    text-shadow: 0 2px 16px rgba(0, 0, 0, 0.46);
}

.status-bar,
.control-card,
.video-card,
.connect-card {
    background: var(--panel);
    border: 1px solid var(--panel-border);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
}

.status-bar {
    width: min(100%, 540px);
    margin: 20px auto 0;
    padding: 14px 18px;
    border-radius: 18px;
    text-align: center;
    font-weight: 700;
    letter-spacing: 0.03em;
}

.disconnected {
    color: #ffd1d1;
    border-color: rgba(255, 107, 107, 0.34);
    background: rgba(73, 17, 17, 0.52);
}

.connecting {
    color: #d8e9ff;
    border-color: rgba(97, 167, 255, 0.36);
    background: rgba(18, 47, 86, 0.52);
}

.connected {
    color: #d7ffe9;
    border-color: rgba(57, 217, 138, 0.34);
    background: rgba(14, 67, 43, 0.52);
}

.connect-card {
    width: min(100%, 560px);
    margin: 18px auto 0;
    padding: 18px;
    border-radius: 20px;
}

.connect-label {
    display: block;
    margin-bottom: 10px;
    color: var(--muted);
    font-size: 15px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.device-input {
    width: 100%;
    height: 60px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 14px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
    color: #fff;
    padding: 0 18px;
    font-size: 18px;
    outline: none;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.device-input::placeholder {
    color: rgba(255, 255, 255, 0.66);
}

.device-input:focus {
    border-color: rgba(255, 255, 255, 0.28);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.08),
        0 0 0 3px rgba(255, 255, 255, 0.08);
}

.button-primary,
.button-danger,
.control-btn,
.fullscreen-btn {
    border: 0;
    border-radius: 14px;
    cursor: pointer;
    font-family: "Orbitron", "Russo One", sans-serif;
    color: #fff;
    transition: transform 0.14s ease, box-shadow 0.14s ease, filter 0.14s ease, opacity 0.2s ease;
}

.button-primary,
.button-danger {
    width: 100%;
    height: 60px;
    margin-top: 14px;
    font-size: 16px;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.button-primary {
    background:
        linear-gradient(
            180deg,
            #ff6640 0%,
            #ff4327 18%,
            #da2214 50%,
            #a70e07 100%
        );
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.24),
        inset 0 -2px 0 rgba(0, 0, 0, 0.24),
        0 10px 24px rgba(168, 20, 10, 0.42);
}

.button-danger {
    background:
        linear-gradient(
            180deg,
            #5e636e 0%,
            #444a55 22%,
            #2d313a 60%,
            #1f2229 100%
        );
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.16),
        inset 0 -2px 0 rgba(0, 0, 0, 0.24),
        0 10px 24px rgba(0, 0, 0, 0.28);
}

.button-primary:hover,
.button-danger:hover,
.control-btn:hover,
.fullscreen-btn:hover {
    transform: translateY(-1px);
    filter: brightness(1.04);
}

.button-primary:disabled,
.button-danger:disabled {
    cursor: wait;
    filter: saturate(0.8) brightness(0.92);
    transform: none;
}

.button-primary:active,
.button-danger:active,
.control-btn:active,
.fullscreen-btn:active {
    transform: translateY(1px);
}

.main-grid {
    margin-top: 22px;
    display: grid;
    grid-template-columns: minmax(0, min(100%, 1080px));
    gap: 22px;
    align-items: start;
    justify-content: center;
}

body.session-active .main-grid {
    grid-template-columns: minmax(0, 1fr) 340px;
}

.video-card,
.control-card {
    border-radius: 24px;
    padding: 16px;
}

.video-card {
    position: relative;
    width: 100%;
}

.video-frame {
    position: relative;
    border-radius: 18px;
    overflow: hidden;
    background: #000;
    border: 1px solid rgba(255, 255, 255, 0.08);
    aspect-ratio: 4 / 3;
}

#video {
    display: block;
    width: 100%;
    height: 100%;
    background: #000;
    object-fit: contain;
}

.fullscreen-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 10px 14px;
    font-size: 12px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    background: rgba(0, 0, 0, 0.64);
    border: 1px solid rgba(255, 255, 255, 0.16);
    z-index: 2;
}

.control-card h4 {
    margin: 2px 0 16px;
    text-align: center;
    font-family: "Orbitron", "Russo One", sans-serif;
    font-size: 22px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.94);
}

.speed-wrap {
    margin-bottom: 18px;
}

.speed-label {
    display: block;
    text-align: center;
    color: var(--muted);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 10px;
}

.speed-label span {
    color: #fff;
}

#speedSlider {
    width: 100%;
    accent-color: #ff4a2f;
}

.controls-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    text-align: center;
}

.control-btn {
    min-height: 74px;
    font-size: 28px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12);
}

.control-btn.stop {
    background:
        linear-gradient(
            180deg,
            #ff6640 0%,
            #ff4327 18%,
            #da2214 50%,
            #a70e07 100%
        );
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.24),
        inset 0 -2px 0 rgba(0, 0, 0, 0.24),
        0 10px 24px rgba(168, 20, 10, 0.32);
}

.controls-hint {
    margin: 18px 0 0;
    text-align: center;
    color: var(--hint-text);
    font-size: 14px;
    line-height: 1.5;
}

.domain {
    margin-top: 20px;
    text-align: center;
    font-family: "Orbitron", "Russo One", sans-serif;
    font-size: 13px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.72);
}

.hidden {
    display: none !important;
}

@media (max-width: 980px) {
    .main-grid {
        grid-template-columns: 1fr;
    }

    body.session-active .main-grid {
        grid-template-columns: 1fr;
    }

    .control-card {
        width: min(100%, 560px);
        margin: 0 auto;
    }
}

@media (max-width: 640px) {
    .page {
        padding: 22px 12px 28px;
    }

    .connect-card,
    .video-card,
    .control-card {
        border-radius: 18px;
        padding: 14px;
    }

    .button-primary,
    .button-danger {
        height: 56px;
        font-size: 15px;
    }

    .control-btn {
        min-height: 64px;
        font-size: 24px;
    }
}