/* ---------------------------------------------------------------
   Reset & base
--------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --bg: #0B0F2A;
    --aurora-purple: #6C3FC5;
    --aurora-blue: #1B3A8C;
    --accent: #6C3FC5;
    --accent-amber: #F5A623;
    --text: #FFFFFF;
    --text-muted: rgba(255, 255, 255, 0.5);
    --surface: rgba(255, 255, 255, 0.06);
    --border: rgba(255, 255, 255, 0.12);
    --border-focus: #6C3FC5;
    --error: #ff6b6b;
    --btn-radius: 0.9rem;
    --input-radius: 0.75rem;
}

html {
    height: 100%;
    background: var(--bg);
}

body {
    min-height: 100%;
    background: var(--bg);
    color: var(--text);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

/* ---------------------------------------------------------------
   Aurora (subtle — phone screen, not TV)
--------------------------------------------------------------- */
.aurora {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

.aurora__blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.3;
    mix-blend-mode: screen;
}

.aurora__blob--1 {
    width: 120vw;
    height: 60vh;
    top: -30vh;
    left: -20vw;
    background: radial-gradient(ellipse, var(--aurora-blue) 0%, transparent 70%);
    animation: floatA 20s ease-in-out infinite alternate;
}

.aurora__blob--2 {
    width: 100vw;
    height: 50vh;
    bottom: -10vh;
    right: -20vw;
    background: radial-gradient(ellipse, var(--aurora-purple) 0%, transparent 70%);
    animation: floatB 25s ease-in-out infinite alternate;
}

@keyframes floatA {
    from {
        transform: translate(0, 0);
    }

    to {
        transform: translate(5vw, 8vh);
    }
}

@keyframes floatB {
    from {
        transform: translate(0, 0);
    }

    to {
        transform: translate(-5vw, -6vh);
    }
}

@media (prefers-reduced-motion: reduce) {
    .aurora__blob {
        animation: none;
    }
}

/* ---------------------------------------------------------------
   App shell
--------------------------------------------------------------- */
.app {
    position: relative;
    z-index: 1;
    min-height: 100vh;
}

/* ---------------------------------------------------------------
   Steps
--------------------------------------------------------------- */
.step {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 1.5rem;
    opacity: 0;
    transform: translateY(2rem);
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
    min-height: 100vh;
}

.step--active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
    position: relative;
}

.step__inner {
    width: 100%;
    max-width: 400px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.step__inner--play {
    gap: 1.25rem;
    align-items: center;
}

/* ---------------------------------------------------------------
   Brand
--------------------------------------------------------------- */
.brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding-bottom: 0.5rem;
}

.brand__logo {
    width: min(60vw, 200px);
    height: auto;
    filter: drop-shadow(0 0 20px rgba(108, 63, 197, 0.4));
}

.brand__logo--sm {
    width: min(40vw, 120px);
}

.brand--compact {
    padding-bottom: 0;
}

.brand__hint {
    font-size: 0.9rem;
    color: var(--text-muted);
    text-align: center;
}

    .brand__hint strong {
        color: var(--text);
        font-weight: 600;
    }

/* ---------------------------------------------------------------
   Field group
--------------------------------------------------------------- */
.field-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.field-group__label {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-muted);
    padding-left: 0.25rem;
}

/* ---------------------------------------------------------------
   Inputs
--------------------------------------------------------------- */
.input {
    width: 100%;
    background: var(--surface);
    border: 1.5px solid var(--border);
    border-radius: var(--input-radius);
    color: var(--text);
    outline: none;
    transition: border-color 0.2s;
    -webkit-appearance: none;
}

    .input:focus {
        border-color: var(--border-focus);
    }

.input--code {
    padding: 1rem;
    font-family: 'Courier New', 'Consolas', monospace;
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: 0.4em;
    text-align: center;
    text-transform: uppercase;
}

.input--name {
    padding: 0.9rem 1rem;
    font-size: 1.2rem;
    text-align: center;
}

.input::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

/* ---------------------------------------------------------------
   Field error
--------------------------------------------------------------- */
.field-error {
    font-size: 0.85rem;
    color: var(--error);
    min-height: 1.2em;
    padding-left: 0.25rem;
    opacity: 0;
    transition: opacity 0.2s;
}

.field-error--visible {
    opacity: 1;
}

/* ---------------------------------------------------------------
   Buttons
--------------------------------------------------------------- */
.btn {
    width: 100%;
    padding: 1rem;
    font-size: 1.05rem;
    font-weight: 700;
    border: none;
    border-radius: var(--btn-radius);
    cursor: pointer;
    transition: background 0.2s, transform 0.1s, opacity 0.2s;
    -webkit-tap-highlight-color: transparent;
}

    .btn:active {
        transform: scale(0.98);
    }

    .btn:disabled {
        opacity: 0.45;
        cursor: not-allowed;
        transform: none;
    }

.btn--primary {
    background: var(--accent);
    color: #fff;
}

    .btn--primary:hover:not(:disabled) {
        background: #5a33a8;
    }

.btn--ghost {
    background: transparent;
    color: var(--text-muted);
    border: 1.5px solid var(--border);
    font-weight: 500;
}

    .btn--ghost:hover:not(:disabled) {
        background: var(--surface);
        color: var(--text);
    }

/* ---------------------------------------------------------------
   Play header
--------------------------------------------------------------- */
.play-header {
    display: flex;
    justify-content: space-between;
    width: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 0.75rem;
    padding: 0.75rem 1.25rem;
    gap: 1rem;
}

.play-header__room,
.play-header__player {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.1rem;
    flex: 1;
}

.play-header__label {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.play-header__value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text);
    font-family: 'Courier New', monospace;
    letter-spacing: 0.1em;
}

/* ---------------------------------------------------------------
   Controller button — the signature element
--------------------------------------------------------------- */
.controller {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 1rem 0;
}

.controller__btn {
    width: min(72vw, 280px);
    height: min(72vw, 280px);
    border-radius: 50%;
    border: none;
    background: radial-gradient(circle at 35% 35%, #8B5CF6 0%, #6C3FC5 40%, #4C1D95 100%);
    box-shadow: 0 0 0 6px rgba(108, 63, 197, 0.15), 0 0 0 12px rgba(108, 63, 197, 0.08), 0 20px 60px rgba(108, 63, 197, 0.5), inset 0 2px 4px rgba(255, 255, 255, 0.15);
    cursor: pointer;
    transition: transform 0.12s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.12s ease;
    -webkit-tap-highlight-color: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
}

    .controller__btn:active,
    .controller__btn--pressed {
        transform: scale(0.92);
        box-shadow: 0 0 0 6px rgba(108, 63, 197, 0.1), 0 8px 24px rgba(108, 63, 197, 0.3), inset 0 2px 8px rgba(0, 0, 0, 0.3);
    }

    .controller__btn:disabled {
        opacity: 0.7;
        cursor: not-allowed;
    }

.controller__btn-label {
    font-size: 2rem;
    font-weight: 900;
    color: #fff;
    letter-spacing: 0.05em;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    pointer-events: none;
    user-select: none;
}

/* ---------------------------------------------------------------
   Controller feedback
--------------------------------------------------------------- */
.controller__feedback {
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    min-height: 1.5em;
    transition: color 0.2s;
}

/* ---------------------------------------------------------------
   Player chips
--------------------------------------------------------------- */
.player-chips {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
}

.player-chip {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 2rem;
    padding: 0.3rem 0.9rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.player-chip--you {
    border-color: var(--accent);
    color: var(--text);
    font-weight: 600;
}