:root {
    color-scheme: dark;
    --bg: #03101a;
    --bg-strong: #071826;
    --panel: rgba(8, 24, 37, 0.84);
    --panel-strong: rgba(9, 22, 33, 0.94);
    --border: rgba(133, 176, 203, 0.16);
    --border-strong: rgba(133, 176, 203, 0.3);
    --text: #e6f3fb;
    --muted: #8fa5b6;
    --accent: #4fd6c4;
    --accent-strong: #0b78c4;
    --warm: #f7b955;
    --success: #74e39c;
    --shadow: 0 24px 60px rgba(0, 0, 0, 0.3);
    --shell-gap: clamp(0.75rem, 1.4vw, 1.35rem);
    --nav-height: clamp(6.1rem, 9vw, 7.2rem);
    --nav-offset: calc(var(--nav-height) + 0.7rem);
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 16px;
}

[data-theme="light"] {
    color-scheme: light;
    --bg: #edf6fb;
    --bg-strong: #ffffff;
    --panel: rgba(255, 255, 255, 0.86);
    --panel-strong: rgba(252, 255, 255, 0.96);
    --border: rgba(11, 45, 68, 0.11);
    --border-strong: rgba(11, 45, 68, 0.22);
    --text: #0f2433;
    --muted: #4a6070;
    --accent: #0f766e;
    --accent-strong: #0b78c4;
    --warm: #b45309;
    --success: #166534;
    --shadow: 0 24px 60px rgba(14, 40, 58, 0.12);
}

* {
    box-sizing: border-box;
}

html,
body {
    width: 100%;
    height: 100%;
    margin: 0;
    overflow: hidden;
}

body {
    background:
        radial-gradient(circle at top left, rgba(79, 214, 196, 0.12), transparent 28%),
        radial-gradient(circle at top right, rgba(11, 120, 196, 0.16), transparent 26%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 20%),
        var(--bg);
    color: var(--text);
    font-family: "Exo", sans-serif;
}

button,
a {
    font: inherit;
}

button {
    border: 0;
    background: none;
    color: inherit;
    cursor: pointer;
}

.suite-app {
    position: relative;
    width: 100%;
    height: 100svh;
    min-height: 100svh;
    padding: var(--shell-gap);
    overflow: hidden;
}

.suite-app::before {
    content: "";
    position: absolute;
    inset: 0;
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.03), transparent 24%),
        linear-gradient(90deg, rgba(79, 214, 196, 0.03), transparent 32%, rgba(11, 120, 196, 0.04));
    pointer-events: none;
}

.suite-app.nav-hidden {
    --nav-offset: 0.3rem;
}

.suite-reveal-zone {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 18px;
    z-index: 30;
}

.suite-header {
    position: absolute;
    top: var(--shell-gap);
    left: var(--shell-gap);
    right: var(--shell-gap);
    z-index: 20;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 1rem 1.2rem;
    align-items: start;
    min-height: var(--nav-height);
    padding: 1rem 1.1rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.02)),
        var(--panel);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow);
    transition:
        transform 220ms ease,
        opacity 220ms ease;
}

.suite-app.nav-hidden .suite-header {
    transform: translateY(calc(-100% - 0.9rem));
    opacity: 0;
    pointer-events: none;
}

.suite-header__brand,
.suite-header__controls,
.suite-stage__copy,
.suite-stage__meta {
    min-width: 0;
}

.suite-header__brand {
    display: flex;
    gap: 0.95rem;
    align-items: flex-start;
}

.suite-mark {
    position: relative;
    width: 2.85rem;
    height: 2.85rem;
    border-radius: 999px;
    flex-shrink: 0;
    background: linear-gradient(180deg, rgba(79, 214, 196, 0.18), rgba(11, 120, 196, 0.24));
    border: 1px solid rgba(79, 214, 196, 0.28);
}

.suite-mark span {
    position: absolute;
    left: 50%;
    width: 2px;
    border-radius: 999px;
    transform: translateX(-50%);
}

.suite-mark span:nth-child(1) {
    top: 0.5rem;
    height: 1.75rem;
    background: rgba(79, 214, 196, 0.9);
}

.suite-mark span:nth-child(2) {
    top: 0.8rem;
    height: 1.35rem;
    background: rgba(247, 185, 85, 0.84);
    transform: translateX(-50%) rotate(38deg);
}

.suite-mark span:nth-child(3) {
    top: 0.8rem;
    height: 1.35rem;
    background: rgba(255, 143, 127, 0.84);
    transform: translateX(-50%) rotate(-38deg);
}

.suite-kicker,
.suite-pill,
.suite-path__step,
.suite-link {
    font-family: "IBM Plex Mono", monospace;
}

.suite-kicker {
    display: inline-flex;
    color: var(--muted);
    font-size: 0.7rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.suite-header h1,
.suite-stage h2 {
    margin: 0.2rem 0 0;
    font-size: clamp(1.35rem, 1.1rem + 1vw, 2.1rem);
    line-height: 1;
    letter-spacing: -0.05em;
}

.suite-header p,
.suite-stage p {
    margin: 0.5rem 0 0;
    max-width: 46rem;
    color: var(--muted);
    line-height: 1.55;
}

.suite-header__controls {
    display: grid;
    gap: 0.85rem;
    justify-items: end;
}

.suite-tabs,
.suite-actions,
.suite-pill-row,
.suite-path {
    display: flex;
    gap: 0.55rem;
    align-items: center;
    flex-wrap: wrap;
}

.suite-tabs {
    padding: 0.35rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.03);
}

.suite-tab,
.suite-theme-toggle,
.suite-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 2.65rem;
    padding: 0 1rem;
    border-radius: 999px;
    border: 1px solid transparent;
    text-decoration: none;
    color: var(--muted);
    transition:
        border-color 180ms ease,
        background-color 180ms ease,
        color 180ms ease,
        transform 180ms ease;
}

.suite-tab:hover,
.suite-theme-toggle:hover,
.suite-link:hover,
.suite-tab.is-active {
    color: var(--text);
}

.suite-tab.is-active {
    background: linear-gradient(135deg, rgba(79, 214, 196, 0.22), rgba(11, 120, 196, 0.22));
    border-color: rgba(79, 214, 196, 0.25);
}

.suite-theme-toggle,
.suite-link {
    background: rgba(255, 255, 255, 0.03);
    border-color: var(--border);
}

.suite-main {
    position: relative;
    z-index: 1;
    height: 100%;
    padding-top: var(--nav-offset);
    transition: padding-top 220ms ease;
}

.suite-stage {
    display: grid;
    grid-template-rows: auto minmax(0, 1fr);
    gap: 0.9rem;
    height: 100%;
    padding: 1rem;
    border-radius: calc(var(--radius-xl) + 2px);
    border: 1px solid var(--border);
    background:
        radial-gradient(circle at top right, rgba(79, 214, 196, 0.08), transparent 28%),
        var(--panel-strong);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.suite-stage__bar {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 1rem;
    align-items: start;
}

.suite-stage__meta {
    display: grid;
    gap: 0.7rem;
    justify-items: end;
}

.suite-pill {
    display: inline-flex;
    align-items: center;
    min-height: 2.2rem;
    padding: 0 0.8rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.suite-pill--cool {
    color: var(--accent);
}

.suite-pill--warm {
    color: var(--warm);
}

.suite-pill--success {
    color: var(--success);
}

.suite-path__step {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--muted);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.suite-path__step::before {
    content: attr(data-index);
    display: inline-grid;
    place-items: center;
    width: 1.45rem;
    height: 1.45rem;
    border-radius: 999px;
    border: 1px solid var(--border);
    color: var(--text);
}

.suite-path__step.is-active {
    color: var(--text);
}

.suite-path__step.is-active::before {
    border-color: rgba(79, 214, 196, 0.28);
    background: rgba(79, 214, 196, 0.12);
}

.suite-frame-shell,
.suite-frame-stack,
.suite-frame {
    min-height: 0;
}

.suite-frame-shell {
    position: relative;
    height: 100%;
    border-radius: calc(var(--radius-xl) - 4px);
    border: 1px solid var(--border);
    background: var(--bg-strong);
    overflow: hidden;
}

.suite-frame-stack {
    position: relative;
    width: 100%;
    height: 100%;
}

.suite-frame {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
    background: var(--bg-strong);
    opacity: 0;
    pointer-events: none;
    transition: opacity 180ms ease;
}

.suite-frame.is-active {
    opacity: 1;
    pointer-events: auto;
}

.suite-tab:focus-visible,
.suite-theme-toggle:focus-visible,
.suite-link:focus-visible {
    outline: none;
    border-color: rgba(79, 214, 196, 0.32);
    box-shadow: 0 0 0 3px rgba(79, 214, 196, 0.18);
}

@media (max-width: 980px) {
    html,
    body {
        overflow: auto;
    }

    .suite-app {
        height: auto;
        min-height: 100svh;
        overflow: visible;
    }

    .suite-reveal-zone {
        display: none;
    }

    .suite-header {
        position: relative;
        top: auto;
        left: auto;
        right: auto;
    }

    .suite-app.nav-hidden .suite-header {
        transform: none;
        opacity: 1;
        pointer-events: auto;
    }

    .suite-main {
        height: auto;
        padding-top: 0.8rem;
    }

    .suite-stage {
        min-height: calc(100svh - 10rem);
    }

    .suite-stage__bar,
    .suite-header {
        grid-template-columns: 1fr;
    }

    .suite-stage__meta,
    .suite-header__controls {
        justify-items: start;
    }
}

@media (max-width: 640px) {
    .suite-app {
        padding: 0.75rem;
    }

    .suite-stage,
    .suite-header {
        border-radius: 1.3rem;
    }

    .suite-stage {
        padding: 0.75rem;
    }

    .suite-tabs,
    .suite-actions {
        width: 100%;
    }

    .suite-tab,
    .suite-theme-toggle,
    .suite-link {
        flex: 1 1 auto;
    }
}