:root {
    --bg-dark: #041423;
    --bg-mid: #0b2a42;
    --accent: #22d3ee;
    --accent-2: #f59e0b;
    --text: #f8fafc;
    --muted: #93c5fd;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: "Manrope", "Segoe UI", sans-serif;
    color: var(--text);
    background: #020617;
}

.screen-shell {
    position: fixed;
    inset: 0;
    display: grid;
    place-items: center;
    overflow: hidden;
}

.screen-bg {
    position: fixed;
    inset: 0;
    background:
        radial-gradient(90vw 90vh at 100% 0%, rgba(34, 211, 238, 0.25), transparent 65%),
        radial-gradient(90vw 90vh at 0% 100%, rgba(245, 158, 11, 0.22), transparent 60%),
        linear-gradient(130deg, var(--bg-dark), var(--bg-mid));
    filter: saturate(1.15);
}

.screen {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: block;
    padding: 0;
    z-index: 1;
    transform-origin: center center;
}

.screen-header {
    position: absolute;
    top: clamp(10px, 1.2vw, 18px);
    left: clamp(10px, 1.2vw, 18px);
    right: clamp(10px, 1.2vw, 18px);
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 12px;
    align-items: start;
    z-index: 5;
    pointer-events: none;
}

.system-message {
    justify-self: center;
    margin-top: 2px;
    font-size: clamp(11px, 0.8vw, 14px);
    color: #e2e8f0;
    background: rgba(2, 6, 23, 0.38);
    border: 1px solid rgba(125, 211, 252, 0.2);
    border-radius: 8px;
    padding: 5px 9px;
    max-width: 55vw;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.slide-container {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: 0;
    overflow: hidden;
    background: rgba(2, 6, 23, 0.28);
    border: 0;
    backdrop-filter: blur(2px);
}

.slide {
    width: 100%;
    height: 100%;
    position: relative;
}

.slide.fade-in {
    animation: reveal 0.7s ease;
}

@keyframes reveal {
    from { opacity: 0; transform: scale(1.015); }
    to { opacity: 1; transform: scale(1); }
}

.text-slide {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4vw;
    background-position: center;
    background-size: cover;
}

.slide-inner {
    width: min(85vw, 1500px);
    background: rgba(15, 23, 42, 0.58);
    border: 1px solid rgba(125, 211, 252, 0.35);
    border-radius: 20px;
    padding: 3vw;
    box-shadow: 0 24px 60px rgba(2, 6, 23, 0.4);
}

.text-slide.full-layout {
    padding: clamp(20px, 3vw, 58px);
}

.text-slide.full-layout .slide-inner {
    max-width: 100%;
    background: transparent;
    border-color: transparent;
    box-shadow: none;
    padding: clamp(16px, 2.4vw, 36px);
}

.slide-inner h2 {
    margin: 0 0 18px;
    font-family: "Bebas Neue", sans-serif;
    letter-spacing: 2px;
    font-size: clamp(34px, 5vw, 86px);
    color: #e0f2fe;
}

.rich-content {
    font-size: clamp(22px, 2.3vw, 44px);
    line-height: 1.35;
}

.image-slide img,
.video-slide video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.caption {
    position: absolute;
    left: 24px;
    right: 24px;
    bottom: 24px;
    padding: 14px 18px;
    border-radius: 14px;
    background: rgba(2, 6, 23, 0.62);
    border: 1px solid rgba(125, 211, 252, 0.4);
    font-size: clamp(18px, 1.6vw, 32px);
    font-weight: 700;
}

.loading {
    width: 100%;
    height: 100%;
    display: grid;
    place-items: center;
    font-size: clamp(20px, 2.2vw, 40px);
    color: var(--muted);
}

.screen-footer {
    margin-top: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
}

.brand {
    font-family: "Bebas Neue", sans-serif;
    letter-spacing: 1px;
    font-size: clamp(16px, 1.15vw, 24px);
    color: var(--accent);
    padding: 5px 9px;
    border-radius: 8px;
    border: 1px solid rgba(125, 211, 252, 0.2);
    background: rgba(2, 6, 23, 0.32);
    text-shadow: 0 1px 3px rgba(2, 6, 23, 0.6);
}

.clock {
    justify-self: end;
    font-size: clamp(12px, 0.8vw, 16px);
    padding: 5px 9px;
    border-radius: 8px;
    border: 1px solid rgba(125, 211, 252, 0.22);
    background: rgba(15, 23, 42, 0.32);
    text-shadow: 0 1px 3px rgba(2, 6, 23, 0.6);
}

.pairing-panel {
    width: min(900px, 92vw);
    margin: auto;
    padding: clamp(18px, 2.2vw, 30px);
    border-radius: 22px;
    border: 1px solid rgba(125, 211, 252, 0.35);
    background: rgba(2, 6, 23, 0.62);
    box-shadow: 0 24px 60px rgba(2, 6, 23, 0.45);
}

.pairing-panel h2 {
    margin: 0 0 10px;
    font-family: "Bebas Neue", sans-serif;
    letter-spacing: 1px;
    font-size: clamp(28px, 3.4vw, 54px);
}

.pairing-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 20px;
    align-items: center;
}

.pair-code {
    font-size: clamp(34px, 6vw, 94px);
    font-weight: 800;
    letter-spacing: 6px;
    color: #67e8f9;
}

.pair-meta {
    color: #cbd5e1;
    font-size: clamp(16px, 1.4vw, 24px);
}

#qrCodeBox {
    background: #fff;
    border-radius: 12px;
    padding: 12px;
    width: fit-content;
    margin-inline: auto;
}

@media (max-width: 900px) {
    .slide-container {
        border-radius: 0;
    }

    .caption {
        left: 10px;
        right: 10px;
        bottom: 10px;
    }

    .screen-header {
        grid-template-columns: 1fr auto;
        gap: 8px;
    }

    .system-message {
        grid-column: 1 / -1;
        justify-self: start;
        max-width: 85vw;
    }

    .pairing-grid {
        grid-template-columns: 1fr;
    }
}