/* -------------------------------------------------------------
   Sort Your Shit Out Bingo
   Palette derived from the BBC One "Sort Your Life Out" branding:
   - Background yellow:   #FCE838
   - Accent / shadow pink: #FFB8D0
   - Off-white text:      #FFFFFF
   - Bingo-confirmed:     #3BB273 (green)
   ------------------------------------------------------------- */

:root {
    --syso-yellow: #FCE838;
    --syso-yellow-deep: #FFD60A;
    --syso-pink: #FFB8D0;
    --syso-pink-deep: #FF6FB5;
    --syso-white: #FFFFFF;
    --syso-ink: #2A2636;
    --syso-green: #3BB273;
}

* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
}

body {
    background-color: var(--syso-yellow);
    color: var(--syso-ink);
    font-family: "Oswald", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    font-weight: 500;
    min-height: 100vh;
    padding: 24px 16px 40px;
}

main {
    max-width: 640px;
    margin: 0 auto;
}

/* ------------------------- Header / Logo -------------------------
   Recreates the "drop shadow in pink, white fill" treatment of the
   Sort Your Life Out title card using layered text-shadows.
------------------------------------------------------------------ */

header {
    text-align: center;
    padding: 20px 0 12px;
}

.logo {
    font-family: "Oswald", sans-serif;
    font-weight: 700;
    margin: 0;
    line-height: 0.92;
    letter-spacing: 0.02em;
    color: var(--syso-white);
    font-size: clamp(3.5rem, 14vw, 7rem);
    text-shadow:
        2px 2px 0 var(--syso-pink),
        4px 4px 0 var(--syso-pink),
        6px 6px 0 var(--syso-pink);
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    text-transform: uppercase;
}

.logo__line {
    display: block;
}

.logo__sub {
    font-family: "Oswald", sans-serif;
    font-weight: 700;
    letter-spacing: 0.4em;
    margin: 16px 0 0;
    font-size: clamp(1.2rem, 4vw, 2rem);
    color: var(--syso-pink-deep);
    text-shadow: 2px 2px 0 var(--syso-white);
}

/* ------------------------- Intro -------------------------------- */

.intro {
    text-align: center;
    margin: 16px auto 24px;
    max-width: 520px;
    font-family: "Oswald", sans-serif;
    font-weight: 400;
}

.intro p {
    font-size: 1.1rem;
    color: var(--syso-ink);
    margin: 0 0 14px;
    letter-spacing: 0.02em;
}

.intro em {
    font-style: italic;
    color: var(--syso-pink-deep);
}

.intro__actions {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ------------------------- Buttons ------------------------------
   Gradient pink-to-yellow buttons per the plan's brand direction.
------------------------------------------------------------------ */

.btn {
    font-family: "Oswald", sans-serif;
    font-weight: 700;
    letter-spacing: 0.12em;
    font-size: 1.05rem;
    padding: 12px 28px;
    border: 3px solid var(--syso-white);
    background-image: linear-gradient(90deg, var(--syso-pink-deep) 0%, var(--syso-pink) 50%, var(--syso-yellow) 100%);
    background-size: 200% auto;
    color: var(--syso-white);
    border-radius: 999px;
    cursor: pointer;
    text-transform: uppercase;
    box-shadow: 4px 4px 0 var(--syso-pink-deep);
    transition: background-position 0.4s ease, transform 0.12s ease, box-shadow 0.12s ease;
    text-shadow: 1px 1px 0 rgba(0, 0, 0, 0.15);
}

.btn:hover,
.btn:focus-visible {
    background-position: right center;
    transform: translate(-2px, -2px);
    box-shadow: 6px 6px 0 var(--syso-pink-deep);
    outline: none;
}

.btn:active {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0 var(--syso-pink-deep);
}

.btn--secondary {
    background-image: linear-gradient(90deg, var(--syso-yellow) 0%, var(--syso-pink) 50%, var(--syso-pink-deep) 100%);
}

.btn--confetti {
    background-image: linear-gradient(90deg, var(--syso-pink) 0%, var(--syso-yellow) 50%, var(--syso-pink) 100%);
}

/* ------------------------- Bingo Grid --------------------------- */

.grid-wrapper {
    background-color: var(--syso-white);
    border: 4px solid var(--syso-pink);
    border-radius: 18px;
    padding: 12px;
    box-shadow: 6px 6px 0 var(--syso-pink-deep);
    margin: 0 auto 24px;
}

.bingo-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
}

.bingo-cell {
    aspect-ratio: 1 / 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 4px;
    font-family: "Oswald", sans-serif;
    font-weight: 500;
    font-size: clamp(0.6rem, 2vw, 0.95rem);
    line-height: 1.1;
    color: var(--syso-ink);
    background-color: var(--syso-yellow);
    border: 2px solid var(--syso-ink);
    border-radius: 8px;
    cursor: pointer;
    user-select: none;
    transition: background-color 0.18s ease, color 0.18s ease, transform 0.12s ease, border-color 0.18s ease;
    overflow: hidden;
    word-break: break-word;
    hyphens: auto;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.bingo-cell:hover,
.bingo-cell:focus-visible {
    background-color: var(--syso-yellow-deep);
    outline: none;
}

.bingo-cell.is-marked {
    background-color: var(--syso-pink);
    color: var(--syso-white);
    border-color: var(--syso-white);
    transform: scale(0.97);
}

.bingo-cell.is-winning {
    background-color: var(--syso-green);
    color: var(--syso-white);
    border-color: var(--syso-white);
    animation: winPulse 0.9s ease-in-out infinite alternate;
}

@keyframes winPulse {
    from { box-shadow: 0 0 0 0 rgba(59, 178, 115, 0.7); }
    to   { box-shadow: 0 0 0 8px rgba(59, 178, 115, 0); }
}

/* ------------------------- Actions ------------------------------ */

.bingo-actions {
    text-align: center;
    min-height: 48px;
}

/* ------------------------- Modal -------------------------------- */

.overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(42, 38, 54, 0.55);
    backdrop-filter: blur(2px);
    z-index: 900;
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.modal[hidden] {
    display: none;
}

.modal__content {
    background-color: var(--syso-white);
    border: 4px solid var(--syso-pink-deep);
    border-radius: 18px;
    padding: 28px 24px 24px;
    max-width: 420px;
    width: 100%;
    position: relative;
    box-shadow: 8px 8px 0 var(--syso-pink);
    font-family: "Oswald", sans-serif;
    font-weight: 400;
}

.modal__title {
    font-family: "Oswald", sans-serif;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--syso-white);
    text-shadow:
        2px 2px 0 var(--syso-pink-deep),
        4px 4px 0 var(--syso-pink-deep);
    font-size: clamp(2rem, 8vw, 3.5rem);
    margin: 0 0 12px;
    text-align: center;
    text-transform: uppercase;
}

.modal__content p {
    margin: 0 0 10px;
    color: var(--syso-ink);
    line-height: 1.4;
    letter-spacing: 0.02em;
    font-size: 1.05rem;
}

.modal__close {
    position: absolute;
    top: 8px;
    right: 12px;
    background: transparent;
    border: 0;
    font-size: 2rem;
    line-height: 1;
    color: var(--syso-pink-deep);
    cursor: pointer;
    padding: 4px 10px;
    border-radius: 8px;
}

.modal__close:hover,
.modal__close:focus-visible {
    background-color: var(--syso-yellow);
    outline: none;
}

/* ------------------------- Footer ------------------------------- */

footer {
    text-align: center;
    margin: 40px auto 0;
    max-width: 520px;
    font-size: 0.85rem;
    color: var(--syso-ink);
    opacity: 0.7;
    font-family: "Oswald", sans-serif;
    font-weight: 400;
    letter-spacing: 0.03em;
}

/* ------------------------- Responsive --------------------------- */

@media (min-width: 520px) {
    .logo {
        text-shadow:
            3px 3px 0 var(--syso-pink),
            6px 6px 0 var(--syso-pink),
            9px 9px 0 var(--syso-pink);
    }

    .bingo-cell {
        padding: 6px;
    }
}

@media (min-width: 768px) {
    main {
        max-width: 720px;
    }

    .grid-wrapper {
        padding: 18px;
    }

    .bingo-grid {
        gap: 8px;
    }

    .bingo-cell {
        padding: 8px;
    }
}