:root {
    --background: #0d0e0f;
    --text: #f2f1ec;
    --muted: #989995;
    --accent: #d7ff64;
    --border: rgba(255, 255, 255, 0.16);
    --control-bg: rgba(255, 255, 255, 0.07);
    --control-hover: rgba(255, 255, 255, 0.12);
}

:root[data-theme="minimalistic"][data-mode="dark"] {
    --background: #0d0e0f;
    --text: #f2f1ec;
    --muted: #989995;
    --accent: #d7ff64;
    --border: rgba(255, 255, 255, 0.16);
    --control-bg: rgba(255, 255, 255, 0.07);
    --control-hover: rgba(255, 255, 255, 0.12);
}

:root[data-theme="minimalistic"][data-mode="light"] {
    --background: #f7f7f4;
    --text: #242424;
    --muted: #74746f;
    --accent: #3157d5;
    --border: rgba(36, 36, 36, 0.14);
    --control-bg: rgba(255, 255, 255, 0.66);
    --control-hover: #ffffff;
}

:root[data-theme="airplanes"][data-mode="dark"] {
    --background: #071827;
    --text: #f3f8fc;
    --muted: #8da8bb;
    --accent: #7fd1ff;
    --border: rgba(210, 237, 255, 0.18);
    --control-bg: rgba(210, 237, 255, 0.08);
    --control-hover: rgba(210, 237, 255, 0.14);
    --sky-top: #071827;
    --sky-bottom: #123b58;
    --cloud: rgba(194, 228, 247, 0.08);
    --plane: rgba(225, 243, 255, 0.76);
    --contrail: rgba(205, 235, 252, 0.28);
}

:root[data-theme="airplanes"][data-mode="light"] {
    --background: #dff3ff;
    --text: #17364b;
    --muted: #56788d;
    --accent: #167bb6;
    --border: rgba(23, 54, 75, 0.14);
    --control-bg: rgba(255, 255, 255, 0.48);
    --control-hover: rgba(255, 255, 255, 0.76);
    --sky-top: #bfe8ff;
    --sky-bottom: #f2faff;
    --cloud: rgba(255, 255, 255, 0.62);
    --plane: rgba(25, 75, 105, 0.72);
    --contrail: rgba(255, 255, 255, 0.76);
}

:root[data-theme="love"][data-mode="dark"] {
    --background: #2a151b;
    --text: #fff3f3;
    --muted: #c79ba4;
    --accent: #ff8ca3;
    --border: rgba(255, 226, 231, 0.18);
    --control-bg: rgba(255, 226, 231, 0.07);
    --control-hover: rgba(255, 226, 231, 0.12);
}

:root[data-theme="love"][data-mode="light"] {
    --background: #fff4f5;
    --text: #3b2026;
    --muted: #936c74;
    --accent: #c73f60;
    --border: rgba(59, 32, 38, 0.14);
    --control-bg: rgba(255, 255, 255, 0.7);
    --control-hover: #ffffff;
}

:root[data-theme="spiderman"][data-mode="dark"] {
    --background: #071426;
    --text: #f2c537;
    --muted: #f2c537;
    --accent: #e80203;
    --spider-blue: #132165;
    --spider-yellow: #f2c537;
    --border: rgba(232, 2, 3, 0.34);
    --control-bg: rgba(19, 33, 101, 0.34);
    --control-hover: rgba(232, 2, 3, 0.28);
    --web: rgba(232, 2, 3, 0.22);
}

:root[data-theme="spiderman"][data-mode="light"] {
    --background: #fff8e6;
    --text: #132165;
    --muted: #15152f;
    --accent: #e80203;
    --spider-blue: #132165;
    --spider-yellow: #f2c537;
    --border: rgba(185, 17, 24, 0.24);
    --control-bg: rgba(242, 197, 55, 0.22);
    --control-hover: rgba(242, 197, 55, 0.34);
    --web: rgba(185, 17, 24, 0.16);
}

* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
}

html {
    background: var(--background);
}

body {
    min-width: 320px;
    min-height: 100svh;
    min-height: 100dvh;
    margin: 0;
    overflow: hidden;
    background: var(--background);
    color: var(--text);
    font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    transition: background-color 240ms ease, color 240ms ease;
}

.airplane-sky {
    display: none;
}

.spiderman-web {
    display: none;
}

:root[data-theme="airplanes"] body {
    background:
        radial-gradient(ellipse at 17% 28%, var(--cloud) 0 7%, transparent 19%),
        radial-gradient(ellipse at 78% 70%, var(--cloud) 0 8%, transparent 22%),
        linear-gradient(160deg, var(--sky-top), var(--sky-bottom));
}

:root[data-theme="airplanes"] .airplane-sky {
    position: fixed;
    inset: 0;
    z-index: 0;
    display: block;
    overflow: hidden;
    pointer-events: none;
}

:root[data-theme="airplanes"] .airplane {
    position: absolute;
    width: clamp(2.8rem, 5vw, 5rem);
    fill: var(--plane);
    filter: drop-shadow(0 0.35rem 0.65rem rgba(0, 0, 0, 0.12));
}

:root[data-theme="airplanes"] .airplane-one {
    top: 18%;
    right: 13%;
    transform: rotate(-9deg);
}

:root[data-theme="airplanes"] .airplane-two {
    bottom: 20%;
    left: 9%;
    width: clamp(1.8rem, 3vw, 3rem);
    opacity: 0.42;
    transform: rotate(171deg);
}

:root[data-theme="airplanes"] .airplane-sky::before,
:root[data-theme="airplanes"] .airplane-sky::after {
    position: absolute;
    content: "";
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--contrail));
    transform-origin: right center;
}

:root[data-theme="spiderman"] body {
    background:
        radial-gradient(circle at 50% 112%, color-mix(in srgb, var(--accent) 24%, transparent), transparent 48%),
        radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--spider-blue) 24%, transparent), transparent 40%),
        radial-gradient(circle at 0% 10%, color-mix(in srgb, var(--accent) 16%, transparent), transparent 40%),
        linear-gradient(145deg, color-mix(in srgb, var(--spider-blue) 18%, transparent), color-mix(in srgb, var(--accent) 10%, transparent) 56%, color-mix(in srgb, var(--spider-yellow) 4%, transparent)),
        var(--background);
}

:root[data-theme="spiderman"] .spiderman-web {
    position: fixed;
    inset: 0;
    z-index: 0;
    display: block;
    pointer-events: none;
    background:
        repeating-radial-gradient(circle at 100% 0%, transparent 0 3.75rem, var(--web) 3.8rem 3.86rem),
        repeating-conic-gradient(from 0deg at 100% 0%, transparent 0 14deg, var(--web) 14.5deg 15deg);
    mask-image: linear-gradient(225deg, #000 0, transparent 48%);
}

:root[data-theme="spiderman"] .countdown {
    color: var(--text);
    text-shadow:
        0 0 2rem color-mix(in srgb, var(--spider-yellow) 12%, transparent),
        0 0 3.5rem color-mix(in srgb, var(--accent) 20%, transparent),
        0 0 6rem color-mix(in srgb, var(--spider-blue) 14%, transparent);
}

:root[data-theme="airplanes"] .airplane-sky::before {
    top: 25%;
    right: 16%;
    width: 34vw;
    transform: rotate(-9deg);
}

:root[data-theme="airplanes"] .airplane-sky::after {
    bottom: 24%;
    left: 11%;
    width: 22vw;
    opacity: 0.55;
    transform: rotate(-9deg);
}

.page {
    position: relative;
    z-index: 1;
    min-height: 100svh;
    min-height: 100dvh;
    display: grid;
    grid-template-rows: auto 1fr auto;
    padding:
        max(1rem, env(safe-area-inset-top))
        max(1rem, env(safe-area-inset-right))
        max(1rem, env(safe-area-inset-bottom))
        max(1rem, env(safe-area-inset-left));
}

.topbar,
.footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand {
    color: inherit;
    font-size: 0.9rem;
    font-weight: 750;
    letter-spacing: 0.14em;
    text-decoration: none;
    text-transform: uppercase;
}

.theme-toggle {
    display: inline-grid;
    width: 2.75rem;
    height: 2.75rem;
    place-items: center;
    padding: 0;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--control-bg);
    color: inherit;
    cursor: pointer;
    transition: background-color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.theme-toggle:hover {
    background: var(--control-hover);
    transform: translateY(-1px);
}

.theme-toggle:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 3px;
}

.theme-toggle svg {
    width: 1.15rem;
    height: 1.15rem;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
    stroke-width: 1.8;
}

.sun,
:root[data-mode="dark"] .moon {
    display: none;
}

:root[data-mode="dark"] .sun {
    display: block;
}

main {
    display: grid;
    place-items: center;
    min-width: 0;
    padding: clamp(1rem, 4vh, 3rem) 0;
    transform: translateY(-1.5vh);
}

.countdown {
    width: 100%;
    max-width: 100%;
    margin: 0;
    font-size: min(clamp(3.5rem, 10.5vw, 10rem), calc((100vw - 2rem) / 7.35));
    font-variant-numeric: tabular-nums lining-nums;
    font-weight: 850;
    letter-spacing: -0.045em;
    line-height: 0.85;
    white-space: nowrap;
    text-align: center;
    text-shadow: 0 0 3rem color-mix(in srgb, var(--accent) 12%, transparent);
}

:root[data-theme="airplanes"] .countdown {
    text-shadow: 0 0 3rem color-mix(in srgb, var(--accent) 22%, transparent);
}

.footer {
    color: var(--muted);
    font-size: 0.86rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.footer time {
    color: var(--text);
}

@media (max-width: 520px) {
    .countdown {
        font-size: min(clamp(2.75rem, 14vw, 4.5rem), calc((100vw - 2rem) / 7.25));
        letter-spacing: -0.035em;
    }

    .footer {
        flex-direction: column;
        align-items: flex-end;
        gap: 0.35rem;
        font-size: 0.72rem;
    }

    .footer span:last-child {
        max-width: 11rem;
        text-align: right;
    }
}

@media (max-height: 430px) and (orientation: landscape) {
    .page {
        grid-template-rows: auto minmax(0, 1fr);
    }

    main {
        padding: 0.5rem 0;
        transform: none;
    }

    .countdown {
        font-size: min(clamp(3rem, 17vh, 5.25rem), calc((100vw - 2rem) / 7.35));
    }

    .footer {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}