/* ==========================================================================
   Kean Cup AI Competition — index page
   Built on the NACRE palette and type from lab.css (body.lab-page), the same
   foundation as the home page, with a more playful treatment: sticker
   badges, a numbered rail of editions, and posters that tilt on hover.
   ========================================================================== */

body.comp-index {
    --background: #FFFFFF;
    background: #FFFFFF;
    /* two warm accents, used sparingly for medals and stickers */
    --comp-gold: #E8B84A;
    --comp-coral: #F0866A;
}

body.comp-index main {
    overflow-x: clip; /* the floating stickers may overhang the hero plate */
}

/* ==========================================================================
   Hero: intro left, mascot on a dotted plate right
   ========================================================================== */

.comp-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
    gap: 4rem;
    padding-top: 3rem; /* padding, not margin: a margin would collapse into main's */
}

.comp-hero-text h1 {
    font-size: 4rem;
    line-height: 1.02;
    letter-spacing: -0.01em;
    color: var(--nacre-navy-ink);
    margin-bottom: 1.1rem;
}

.comp-hero-text h1 em {
    font-style: italic;
    font-weight: 500;
    color: var(--nacre-ocean);
}

.comp-tagline {
    font-family: var(--font-display);
    font-size: 1.5rem;
    line-height: 1.4;
    color: var(--nacre-deep);
    margin-bottom: 1.25rem;
}

.comp-lede {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-color);
    max-width: 56ch;
}

.comp-lede a {
    color: var(--nacre-deep);
    text-decoration: none;
    border-bottom: 1px solid rgba(37, 131, 182, 0.45);
    transition: color 0.2s ease, border-color 0.2s ease;
}

.comp-lede a:hover {
    color: var(--nacre-ocean);
    border-bottom-color: var(--nacre-ocean);
}

/* Mascot on an offset plate dotted like confetti */
.comp-mascot {
    position: relative;
    justify-self: end;
    width: 100%;
    max-width: 380px;
    margin: 1rem 1.5rem 1.5rem 0;
}

.comp-mascot-plate {
    position: relative;
    aspect-ratio: 1 / 1;
    border-radius: 1.5rem;
    background:
        radial-gradient(circle at 18% 22%, rgba(255, 255, 255, 0.9) 0 3px, transparent 4px),
        radial-gradient(circle at 78% 18%, rgba(255, 255, 255, 0.9) 0 2px, transparent 3px),
        radial-gradient(circle at 86% 62%, rgba(255, 255, 255, 0.9) 0 3px, transparent 4px),
        radial-gradient(circle at 12% 74%, rgba(255, 255, 255, 0.9) 0 2px, transparent 3px),
        radial-gradient(circle at 56% 88%, rgba(255, 255, 255, 0.9) 0 2px, transparent 3px),
        radial-gradient(circle at 40% 10%, rgba(255, 255, 255, 0.9) 0 2px, transparent 3px),
        linear-gradient(160deg, #E3EFF5 0%, #CFE6EF 60%, #A8DBE6 100%);
    transform: rotate(-3deg);
    box-shadow: 0 18px 44px rgba(7, 37, 79, 0.14);
}

.comp-mascot img {
    position: absolute;
    inset: -6% 0 0 0;
    width: 100%;
    height: 106%;
    object-fit: contain;
    transform: rotate(3deg);
    filter: drop-shadow(0 14px 22px rgba(7, 37, 79, 0.28));
}

/* Floating stickers around the mascot */
.sticker {
    position: absolute;
    display: grid;
    place-items: center;
    width: 3.4rem;
    height: 3.4rem;
    border-radius: 50%;
    font-size: 1.5rem;
    background: #FFFFFF;
    border: 2px solid #FFFFFF;
    box-shadow: 0 8px 20px rgba(7, 37, 79, 0.18);
    animation: bob 5s ease-in-out infinite;
}

.sticker.s1 { top: -1.2rem; left: -1.4rem; transform: rotate(-12deg); animation-delay: 0s; }
.sticker.s2 { top: 32%; right: -1.6rem; transform: rotate(10deg); animation-delay: 1.2s; }
.sticker.s3 { bottom: 2.5rem; left: -1.8rem; transform: rotate(8deg); animation-delay: 2.4s; }
.sticker.s4 { bottom: -1rem; right: 18%; transform: rotate(-8deg); animation-delay: 3.6s; }

@keyframes bob {
    0%, 100% { translate: 0 0; }
    50% { translate: 0 -8px; }
}

/* ==========================================================================
   Numbers strip
   ========================================================================== */

.comp-stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
    margin-top: 4rem;
}

.comp-stat {
    padding: 1.4rem 1.5rem 1.3rem;
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    background: var(--gradient-crystal);
}

.comp-stat strong {
    display: block;
    font-family: var(--font-display);
    font-size: 2.4rem;
    font-weight: 500;
    line-height: 1;
    color: var(--nacre-navy-ink);
    margin-bottom: 0.5rem;
}

.comp-stat span {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--nacre-ocean);
}

/* ==========================================================================
   Editions: a numbered rail, newest first
   ========================================================================== */

.comp-editions {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    padding-left: 4.5rem;
}

/* the rail */
.comp-editions::before {
    content: '';
    position: absolute;
    top: 1.5rem;
    bottom: 1.5rem;
    left: 1.45rem;
    width: 2px;
    background: linear-gradient(180deg, var(--nacre-ocean), var(--nacre-pale));
    border-radius: 2px;
}

.edition {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    border: 1px solid var(--border-color);
    border-radius: 1.25rem;
    background: #FFFFFF;
    /* no overflow clipping here: the numbered stop hangs outside the card */
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.35s ease, border-color 0.35s ease;
}

.edition:hover {
    transform: translateY(-4px);
    border-color: rgba(37, 131, 182, 0.35);
    box-shadow: 0 18px 40px rgba(7, 37, 79, 0.12);
}

/* numbered stop on the rail */
.edition-no {
    position: absolute;
    z-index: 3;
    top: 1.5rem;
    left: -4.5rem;
    width: 3rem;
    height: 3rem;
    display: flex;
    align-items: baseline;
    justify-content: center;
    padding-top: 0.7rem;
    border-radius: 50%;
    background: var(--nacre-navy-ink);
    color: #FFFFFF;
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 500;
    box-shadow: 0 0 0 6px #FFFFFF;
}

.edition-no sup {
    font-size: 0.6em;
    margin-left: 1px;
}

/* ribbon for the newest edition */
.edition-ribbon {
    position: absolute;
    z-index: 2;
    top: 1rem;
    left: 1rem;
    padding: 0.3rem 0.75rem;
    border-radius: 2rem;
    background: var(--comp-gold);
    color: var(--nacre-navy-ink);
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    transform: rotate(-2deg);
}

/* ---- poster (left) ---- */
.edition-poster {
    position: relative;
    min-height: 260px;
    overflow: hidden;
    border-radius: 1.25rem 0 0 1.25rem; /* clips the image to the card's corners */
    background: var(--nacre-navy-bg);
}

.edition-poster img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.edition:hover .edition-poster img {
    transform: scale(1.04);
}

/* split poster: two winners, stacked in the tall desktop column and side by
   side once the poster spans the full card width */
.edition-poster.split {
    display: grid;
    grid-template-rows: 1fr 1fr;
    gap: 3px;
    background: #FFFFFF;
}

.edition-poster.split img {
    height: 100%;
    min-height: 0;
}

/* typographic poster for the first edition, which pre-dates thumbnails */
.edition-poster.typo {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 2rem 2rem 2rem 2.25rem;
    color: #FFFFFF;
    background:
        radial-gradient(circle at 85% 15%, rgba(101, 184, 212, 0.35), transparent 45%),
        radial-gradient(circle at 10% 90%, rgba(37, 131, 182, 0.45), transparent 50%),
        linear-gradient(160deg, #0C2C5A 0%, #07254F 60%, #071A36 100%);
}

.edition-poster.typo .typo-emoji {
    font-size: 2.6rem;
    line-height: 1;
    margin-bottom: 0.9rem;
}

.edition-poster.typo .typo-quote {
    font-family: var(--font-display);
    font-size: 2.3rem;
    line-height: 1.1;
    font-weight: 500;
    letter-spacing: -0.01em;
}

.edition-poster.typo .typo-quote em {
    font-style: italic;
    color: var(--nacre-pale);
}

.edition-poster.typo .typo-note {
    margin-top: 1rem;
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.6);
}

/* caption pinned to the bottom of an image poster */
.poster-caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    padding: 2rem 1.25rem 0.9rem;
    font-family: var(--font-mono);
    font-size: 0.68rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.9);
    background: linear-gradient(180deg, transparent, rgba(7, 26, 54, 0.85));
}

/* ---- body (right) ---- */
.edition-body {
    padding: 2rem 2.25rem 2rem 2.25rem;
    display: flex;
    flex-direction: column;
}

/* Same order on every card: eyebrow (ordinal · season · scope), then the theme as the title */
.edition-body .lab-eyebrow {
    margin-bottom: 0.5rem;
}

.edition-body h3 {
    font-size: 2.1rem;
    line-height: 1.15;
    color: var(--nacre-navy-ink);
    margin-bottom: 0.85rem;
}

.edition-body p {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--text-color);
}

/* medal line */
.edition-win {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    margin-top: 1.1rem;
    padding: 0.85rem 1rem;
    border-radius: 0.75rem;
    background: var(--light-bg);
    font-size: 0.95rem;
    line-height: 1.55;
    color: var(--text-color);
}

.edition-win .medal {
    font-size: 1.3rem;
    line-height: 1.2;
}

.edition-win strong {
    font-weight: 600;
    color: var(--nacre-navy-ink);
}

.edition-win small {
    display: block;
    font-size: 0.85rem;
    color: var(--light-text);
}

/* link buttons */
.edition-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-top: auto;
    padding-top: 1.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.6rem 1.15rem;
    border-radius: 2rem;
    font-family: var(--font-mono);
    font-size: 0.74rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-decoration: none;
    border: 1px solid var(--nacre-navy-ink);
    color: var(--nacre-navy-ink);
    background: #FFFFFF;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn-primary {
    background: var(--nacre-navy-ink);
    color: #FFFFFF;
}

.btn-primary:hover {
    background: var(--nacre-deep);
    border-color: var(--nacre-deep);
}

.btn-ghost:hover {
    background: var(--nacre-navy-ink);
    color: #FFFFFF;
}

/* ==========================================================================
   How it works
   ========================================================================== */

.comp-steps {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.25rem;
}

.step {
    position: relative;
    padding: 1.75rem 1.5rem 1.6rem;
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    background: var(--gradient-crystal);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.step:hover {
    transform: translateY(-3px) rotate(-0.6deg);
    box-shadow: 0 12px 30px rgba(7, 37, 79, 0.1);
}

.step:nth-child(2):hover {
    transform: translateY(-3px) rotate(0.6deg);
}

.step-icon {
    display: grid;
    place-items: center;
    width: 3rem;
    height: 3rem;
    margin-bottom: 1rem;
    border-radius: 0.9rem;
    font-size: 1.4rem;
    background: var(--hover-color);
}

.step-no {
    position: absolute;
    top: 1.25rem;
    right: 1.4rem;
    font-family: var(--font-mono);
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    color: var(--nacre-ocean);
}

.step h3 {
    font-size: 1.3rem;
    color: var(--nacre-navy-ink);
    margin-bottom: 0.5rem;
}

.step p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-color);
}

/* ==========================================================================
   Closing call
   ========================================================================== */

.comp-cta {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 2rem;
    padding: 2.25rem 2.5rem;
    border-radius: 1.25rem;
    color: #FFFFFF;
    background:
        radial-gradient(circle at 90% 10%, rgba(101, 184, 212, 0.4), transparent 40%),
        linear-gradient(135deg, #0C2C5A 0%, #0E4F86 100%);
}

.comp-cta h2 {
    font-size: 1.9rem;
    line-height: 1.2;
    color: #FFFFFF;
    margin-bottom: 0.4rem;
}

.comp-cta p {
    font-size: 1rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.78);
}

.comp-cta .btn {
    border-color: #FFFFFF;
    background: #FFFFFF;
    color: var(--nacre-navy-ink);
}

.comp-cta .btn:hover {
    background: var(--nacre-pale);
    border-color: var(--nacre-pale);
}

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 960px) {
    .comp-hero {
        gap: 3rem;
    }

    .comp-hero-text h1 {
        font-size: 3.2rem;
    }

    .comp-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

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

    .edition-poster {
        min-height: 220px;
        border-radius: 1.25rem 1.25rem 0 0;
    }

    .edition-poster.split {
        grid-template-rows: none;
        grid-template-columns: 1fr 1fr;
    }

    .edition-poster.split img {
        min-height: 220px;
    }

    .edition-poster.typo .typo-quote {
        font-size: 1.9rem;
    }

    .comp-steps {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .comp-hero {
        grid-template-columns: 1fr;
        padding-top: 1.5rem;
    }

    .comp-mascot {
        order: -1;
        justify-self: start;
        max-width: 280px;
        margin: 1rem 1.5rem 1.5rem 1rem;
    }

    .comp-hero-text h1 {
        font-size: 2.6rem;
    }

    .comp-tagline {
        font-size: 1.25rem;
    }

    .comp-editions {
        padding-left: 0;
        gap: 1.5rem;
    }

    .comp-editions::before {
        display: none;
    }

    /* badge hangs over the card's top-left edge; ribbon moves to the right */
    .edition-no {
        top: -1rem;
        left: 1rem;
        width: 2.5rem;
        height: 2.5rem;
        padding-top: 0.55rem;
        font-size: 0.95rem;
        box-shadow: 0 0 0 4px #FFFFFF;
    }

    .comp-editions {
        padding-top: 0.5rem;
    }

    .edition-ribbon {
        left: auto;
        right: 1rem;
        transform: rotate(2deg);
    }

    .edition-body {
        padding: 1.5rem 1.25rem 1.5rem;
    }

    .edition-body h3 {
        font-size: 1.5rem;
    }

    .comp-cta {
        grid-template-columns: 1fr;
        padding: 1.75rem 1.5rem;
    }
}

@media (max-width: 480px) {
    .comp-stats {
        grid-template-columns: 1fr 1fr;
        gap: 0.75rem;
    }

    .comp-stat {
        padding: 1.1rem 1rem 1rem;
    }

    .comp-stat strong {
        font-size: 1.9rem;
    }

    .sticker {
        width: 2.8rem;
        height: 2.8rem;
        font-size: 1.2rem;
    }
}

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

    .edition,
    .edition-poster img,
    .step,
    .btn {
        transition: none;
    }
}