:root {
    --ink: #13233f;
    --muted: #63708a;
    --blue: #4e7cff;
    --purple: #8a5cff;
    --cyan: #2dc8e7;
    --yellow: #ffc83d;
    --pink: #ff6fae;
    --green: #3ecb8c;
    --surface: #ffffff;
    --page: #f7f9ff;
    --border: rgba(19, 35, 63, .09);
    --shadow: 0 18px 45px rgba(39, 57, 110, .12);

    /* legacy aliases kept for any pages still referencing brand-* */
    --brand-purple: var(--purple);
    --brand-pink: var(--pink);
    --brand-blue: var(--blue);
    --brand-yellow: var(--yellow);
    --brand-green: var(--green);
}

a {
    text-decoration: none;
}

html, body {
    height: 100%;
}
body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    font-family: 'Nunito', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at 10% 5%, rgba(78, 124, 255, .10), transparent 24rem),
        radial-gradient(circle at 90% 16%, rgba(138, 92, 255, .10), transparent 24rem),
        var(--page);
}
h1, h2, h3, h4, h5, h6,
.navbar-brand {
    font-family: 'Space Grotesk', 'Nunito', system-ui, sans-serif;
    letter-spacing: -.02em;
}
main {
    flex: 1 0 auto;
    padding-top: 10rem;
    padding-bottom: 2rem;
    transition: padding-top 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}
body.is-scrolled main {
    padding-top: 6rem;
}
footer {
    flex-shrink: 0;
}

.site-navbar {
    background: rgba(247, 249, 255, .88);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(19, 35, 63, .06);
    box-shadow: none;
}

.site-navbar .brand {
    display: flex;
    align-items: center;
    gap: .65rem;
    color: var(--ink);
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -.03em;
}

.brand-logo {
    height: 100px;
    width: auto;
    transition: height 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.site-navbar.is-scrolled .brand-logo {
    height: 34px;
}

.footer-logo {
    height: 22px;
    width: auto;
}

.site-navbar .nav-link {
    font-weight: 800;
    color: #4b5872;
}

.site-navbar .nav-link:hover,
.site-navbar .nav-link.active {
    color: var(--blue);
}

#navbarOffcanvas {
    width: 250px;
}

.subjects-dropdown-menu {
    max-height: 70vh;
    overflow-y: auto;
}

.share-bar {
    background: transparent;
}

.share-label {
    color: #77839a;
    letter-spacing: 0.05rem;
}

.btn-share {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: var(--surface);
    color: #77839a;
    font-size: 1rem;
    transition: color .15s ease, border-color .15s ease, background .15s ease, transform .15s ease;
}

.btn-share:hover,
.btn-share:focus-visible {
    color: #fff;
    background: var(--blue);
    border-color: var(--blue);
    transform: translateY(-2px);
}

.btn-share.is-copied {
    color: #fff;
    background: var(--green);
    border-color: var(--green);
}

.site-footer {
    background: transparent;
    color: #77839a;
    border-top: 1px solid var(--border);
}

.footer-links a {
    color: #77839a;
    text-decoration: none;
}

.footer-links a:hover {
    color: var(--blue);
    text-decoration: underline;
}

.cookie-consent-banner {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1050;
    background: var(--ink);
    color: #fff;
    box-shadow: 0 -8px 24px rgba(19, 35, 63, .18);
}

.cookie-consent-banner a {
    color: #fff;
    text-decoration: underline;
}

.footer-stars {
    font-size: 1rem;
    letter-spacing: 0.3rem;
}

@media (min-width: 768px) {
    .footer-stars {
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%);
    }
}

/* Playful default button styling site-wide */
.btn {
    border-radius: 999px;
    font-weight: 800;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover:not(:disabled) {
    transform: translateY(-2px) scale(1.03);
}

.btn-primary,
.btn-main {
    border: 0;
    color: #fff;
    background: linear-gradient(135deg, var(--blue), var(--purple));
    box-shadow: 0 10px 24px rgba(78, 124, 255, .28);
}

.btn-primary:hover,
.btn-primary:focus,
.btn-main:hover,
.btn-main:focus {
    color: #fff;
    background: linear-gradient(135deg, var(--blue), var(--purple));
    box-shadow: 0 12px 28px rgba(78, 124, 255, .38);
}

.tier-pill {
    display: inline-block;
    background: linear-gradient(135deg, var(--yellow), #ffa94d);
    color: #7a4a00;
    font-weight: 800;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.3rem 0.9rem;
    border-radius: 2rem;
    margin-bottom: 0.5rem;
    box-shadow: 0 2px 8px rgba(255, 169, 77, 0.4);
}

.tier-pill a {
    color: inherit;
    text-decoration: none;
}

/* Shared min-height for the hint-button row and the feedback banner in
   quiz-style games — only one of the two is ever visible at a time (the
   feedback banner replaces the hint row once a question is answered), so
   giving them the same reserved height stops the answer buttons below
   from jumping up and down between questions. */
.status-slot {
    min-height: 3.5rem;
}

.age-range-button {
    align-items: center;
    border-radius: 16px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--ink);
    font-weight: 900;
    box-shadow: 0 8px 20px rgba(39, 57, 110, .07);
    display: inline-flex;
    justify-content: center;
    padding: 0.75rem 1.75rem;
    transition: box-shadow 0.2s ease, transform 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.age-range-button:hover,
.age-range-button:focus-visible {
    color: #fff;
    background: linear-gradient(135deg, var(--blue), var(--purple));
    border-color: transparent;
    box-shadow: 0 10px 22px rgba(78, 124, 255, .28);
    transform: translateY(-2px);
}

.age-range-button.selected,
.age-range-button.selected:hover,
.age-range-button.selected:focus-visible {
    color: #fff;
    background: linear-gradient(135deg, var(--blue), var(--purple));
    border-color: transparent;
    box-shadow: 0 10px 22px rgba(78, 124, 255, .28);
}

.category-header {
    position: sticky;
    top: var(--navbar-h, 0px);
    z-index: 1020;
    transition: border-radius 0.15s ease, top 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.category-header.is-stuck {
    border-top-left-radius: 0 !important;
    border-top-right-radius: 0 !important;
}

.hero-kicker-wrap {
    background: linear-gradient(135deg, #eaf0ff, #f5ecff 55%, #fff0f7);
    border: 1px solid #fff;
    box-shadow: 0 10px 30px rgba(39, 57, 110, .07);
}

.category-card-link {
    display: block;
    height: 100%;
    color: inherit;
    text-decoration: none;
}

.category-card {
    height: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 26px;
    box-shadow: 0 10px 30px rgba(39, 57, 110, .07);
    transition: box-shadow 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.category-card .fw-bold {
    font-family: 'Space Grotesk', 'Nunito', system-ui, sans-serif;
    font-size: 1.05rem;
}

.category-card-link:hover .category-card,
.category-card-link:focus .category-card {
    border-color: transparent;
    box-shadow: var(--shadow);
    transform: translateY(-6px);
}

.category-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 1rem;
    background: var(--cat-tint, #f8f9fa);
    color: var(--cat-accent, #4e7cff);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin: 0 auto 0.75rem;
    transition: transform 0.2s ease;
}

.category-card-link:hover .category-icon,
.category-card-link:focus .category-icon {
    transform: scale(1.08) rotate(4deg);
}

.age-range-section.active-range {
    background: linear-gradient(160deg, #eef3ff, #f5f0ff) !important;
    border: 2px solid var(--blue);
    box-shadow: 0 10px 30px rgba(78, 124, 255, .14) !important;
}

.game-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 1rem 1.15rem;
    color: var(--ink);
    transition: box-shadow 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.game-card:hover,
.game-card:focus-visible {
    border-color: transparent;
    box-shadow: var(--shadow);
    transform: translateY(-4px);
    color: var(--ink);
}

.game-card-icon {
    flex: 0 0 3.25rem;
    width: 3.25rem;
    height: 3.25rem;
    border-radius: 1rem;
    background: linear-gradient(135deg, var(--blue), var(--purple));
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
}

/* Science quiz games (Science Games section), driven by the shared
   public/js/science-quiz.js engine. A page can still push its own
   overrides of these same class names if a game needs something
   different — pushed styles render after this block.

   Each game's root element carries a .quiz-tier-{basic|intermediate|gcse}
   class (set by games/_quiz-shell.blade.php) which defines these custom
   properties; every accent colour below reads from them so the same
   engine/markup produces the correct age-tier colour automatically. */

.quiz-tier-basic {
    --quiz-accent: #3ecb8c;
    --quiz-accent-hover: #2fb377;
    --quiz-accent-shadow: rgba(62, 203, 140, 0.35);
    --quiz-card-bg: linear-gradient(160deg, #eaf0ff, #f0fbf6);
}

.quiz-tier-intermediate {
    --quiz-accent: #4e7cff;
    --quiz-accent-hover: #3a68eb;
    --quiz-accent-shadow: rgba(78, 124, 255, 0.35);
    --quiz-card-bg: linear-gradient(160deg, #eaf2ff, #f5f8ff);
}

.quiz-tier-gcse {
    --quiz-accent: #8a5cff;
    --quiz-accent-hover: #7444eb;
    --quiz-accent-shadow: rgba(138, 92, 255, 0.35);
    --quiz-card-bg: linear-gradient(160deg, #f3f0ff, #fdf4ff);
}

/* ---- Landing page: hero, subject cards, feature strip, CTA (mirrors template.html) ---- */

.hero {
    position: relative;
    padding: clamp(1.5rem, 5vw, 3rem) 0 1rem;
    overflow: hidden;
}

.hero-kicker {
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    border: 1px solid rgba(78, 124, 255, .16);
    background: rgba(255, 255, 255, .7);
    border-radius: 999px;
    padding: .45rem .9rem;
    font-size: .82rem;
    font-weight: 900;
    letter-spacing: .04em;
    text-transform: uppercase;
    color: #53607a;
}

.hero-h1 {
    max-width: 720px;
    margin: .9rem 0 1.1rem;
    font-size: clamp(2.4rem, 5.5vw, 4.6rem);
    line-height: .98;
    letter-spacing: -.05em;
    font-weight: 900;
}

.hero-h1 span {
    background: linear-gradient(100deg, var(--blue), var(--purple), var(--pink));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.hero-copy {
    max-width: 640px;
    color: var(--muted);
    font-size: clamp(1.02rem, 1.5vw, 1.2rem);
    line-height: 1.65;
}

.age-picker {
    margin-top: .65rem;
    display: flex;
    flex-wrap: wrap;
    gap: .65rem;
}

.age-btn {
    border: 1px solid var(--border);
    background: #fff;
    color: var(--ink);
    border-radius: 16px;
    padding: .82rem 1rem;
    font-weight: 900;
    box-shadow: 0 8px 20px rgba(39, 57, 110, .07);
    display: inline-block;
}

.age-btn.active,
.age-btn:hover {
    color: #fff;
    background: linear-gradient(135deg, var(--blue), var(--purple));
    border-color: transparent;
}

.hero-art {
    position: relative;
    min-height: 380px;
    display: grid;
    place-items: center;
}

.art-panel {
    position: absolute;
    inset: 5% 0 0 8%;
    border-radius: 36px;
    transform: rotate(3deg);
    background: linear-gradient(145deg, #eaf0ff, #f8efff);
    border: 1px solid white;
    box-shadow: var(--shadow);
}

.art-main {
    position: relative;
    width: min(100%, 460px);
    filter: drop-shadow(0 28px 35px rgba(69, 80, 130, .14));
}

.floating-chip {
    position: absolute;
    padding: .7rem .9rem;
    border-radius: 16px;
    background: rgba(255, 255, 255, .94);
    border: 1px solid rgba(19, 35, 63, .07);
    box-shadow: 0 14px 25px rgba(39, 57, 110, .12);
    font-weight: 900;
}

.chip-a { top: 11%; left: 2%; transform: rotate(-7deg); }
.chip-b { right: 0; top: 25%; transform: rotate(5deg); }
.chip-c { left: 7%; bottom: 8%; transform: rotate(4deg); }

.section { padding: 3.2rem 0; }
.section-title {
    font-size: clamp(1.8rem, 3.6vw, 2.8rem);
    font-weight: 900;
    letter-spacing: -.04em;
    margin-bottom: .7rem;
}
.section-intro { color: var(--muted); max-width: 680px; font-size: 1.05rem; }

.subject-card {
    height: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 26px;
    padding: 1.3rem;
    box-shadow: 0 10px 30px rgba(39, 57, 110, .07);
    transition: .2s ease;
    overflow: hidden;
    position: relative;
    display: block;
    text-align: center;
}
.subject-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.subject-icon {
    width: 64px; height: 64px; border-radius: 18px;
    display: grid; place-items: center;
    margin: 0 auto 1.05rem;
    background: var(--cat-tint, #e9efff);
    color: var(--cat-accent, #4e7cff);
    font-size: 1.7rem;
}
.subject-card h3 { font-size: 1.3rem; font-weight: 900; margin-bottom: .35rem; color: var(--ink); }
.subject-card p { color: var(--muted); margin-bottom: 1rem; }
.subject-card .go {
    position: absolute; right: 1.1rem; bottom: 1rem;
    width: 38px; height: 38px; border-radius: 50%;
    display: grid; place-items: center; background: #f2f5ff; color: var(--blue);
    font-size: 1.35rem; font-weight: 900;
}

.feature-strip {
    background: var(--surface); border: 1px solid var(--border); border-radius: 26px;
    box-shadow: 0 12px 30px rgba(39, 57, 110, .07);
    padding: 1rem;
}
.mini-feature { display: flex; align-items: center; gap: .85rem; padding: .8rem; }
.mini-icon {
    width: 46px; height: 46px; flex: 0 0 46px; border-radius: 14px;
    display: grid; place-items: center; background: #f1f4ff; font-size: 1.2rem;
}
.mini-feature strong { display: block; font-weight: 900; color: var(--ink); }
.mini-feature small { color: var(--muted); }

.cta {
    background: linear-gradient(135deg, #eaf0ff, #f5ecff 50%, #fff0f7);
    border: 1px solid white; border-radius: 34px; padding: clamp(2rem, 5vw, 4rem); text-align: center;
}
.cta .section-title { margin-top: .5rem; }

@media (max-width: 991.98px) {
    .hero-art { min-height: 320px; margin-top: 1rem; }
    .art-panel { inset: 8% 4% 0 4%; }
}
@media (max-width: 575.98px) {
    .hero-art { min-height: 280px; }
    .floating-chip { font-size: .78rem; padding: .55rem .7rem; }
    .section { padding: 2.2rem 0; }
    .subject-card { border-radius: 22px; }
}

.bg-body-tertiary {
    background-color: var(--surface) !important;
    border: 1px solid var(--border);
    border-radius: 26px !important;
    box-shadow: 0 10px 30px rgba(39, 57, 110, .07);
}

.mult-wrap {
    max-width: 720px;
    margin: 0 auto;
}

#typeToggles {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
}

.choice-toggle {
    border-radius: 0.9rem;
    border: 2px solid #dee2e6;
    background: #fff;
    font-size: 1rem;
    font-weight: 700;
    color: #495057;
    padding: 0.6rem 1.25rem;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.choice-toggle:hover {
    border-color: #adb5bd;
}

.choice-toggle.active {
    background: var(--quiz-accent, #7048e8);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 4px 10px var(--quiz-accent-shadow, rgba(112, 72, 232, 0.35));
}

.mult-setup-card {
    border: none;
    border-radius: 1.25rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.start-btn {
    border-radius: 2rem;
    font-weight: 700;
    font-size: 1.15rem;
    padding: 0.75rem 1rem;
    background: var(--quiz-accent, #7048e8);
    border: none;
}

.start-btn:hover:not(:disabled),
.start-btn:focus:not(:disabled) {
    background: var(--quiz-accent-hover, #5f3dc4);
    color: #fff;
}

.start-btn:disabled {
    opacity: 0.5;
}

.game-topbar {
    font-weight: 600;
}

.timer-track {
    height: 0.6rem;
    border-radius: 1rem;
    background: #e9ecef;
    overflow: hidden;
}

.timer-fill {
    height: 100%;
    background: linear-gradient(90deg, #20c997, #0dcaf0);
    border-radius: 1rem;
    transition: width 0.1s linear, background 0.3s ease;
}

.timer-fill.timer-low {
    background: linear-gradient(90deg, #fd7e14, #dc3545);
}

.question-card {
    border: none;
    border-radius: 1.5rem;
    background: var(--quiz-card-bg, linear-gradient(160deg, #f3f0ff, #fdf4ff));
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.07);
}

.quiz-badge {
    display: inline-block;
    font-size: 1.1rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    padding: 0.35rem 1rem;
    border-radius: 2rem;
    color: #fff;
    margin-bottom: 1rem;
    background: var(--quiz-accent, #7048e8);
}

.quiz-badge-a {
    background: #20c997;
}

.quiz-badge-b {
    background: linear-gradient(135deg, #fd7e14, #dc3545);
}

.quiz-badge-c {
    background: linear-gradient(135deg, #868e96, #495057);
}

.question-text-display {
    font-size: 1.3rem;
    font-weight: 700;
    color: #343a40;
    margin-bottom: 0;
}

.answer-btn {
    border-radius: 1.1rem;
    border: 2px solid #dee2e6;
    background: #fff;
    font-size: 1.05rem;
    font-weight: 600;
    color: #343a40;
    text-align: left;
    padding: 0.85rem 1.1rem;
    min-height: 3.5rem;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}

.answer-btn:hover:not(:disabled) {
    border-color: #adb5bd;
    transform: translateY(-2px);
}

.answer-btn:disabled {
    opacity: 1;
}

.answer-btn.correct {
    background: linear-gradient(135deg, #40c057, #82c91e);
    border-color: transparent;
    color: #fff;
}

.answer-btn.wrong {
    background: linear-gradient(135deg, #fa5252, #e64980);
    border-color: transparent;
    color: #fff;
}

.feedback-banner {
    font-size: 1.15rem;
    font-weight: 700;
    border-radius: 1rem;
    padding: 0.75rem 1rem;
}

.feedback-banner.correct-banner {
    background: #d3f9d8;
    color: #2b8a3e;
}

.feedback-banner.wrong-banner {
    background: #ffe3e3;
    color: #c92a2a;
}

.continue-chevron-btn {
    flex-shrink: 0;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    border: 2px solid currentColor;
    background: transparent;
    color: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    transition: background 0.15s ease;
}

.continue-chevron-btn:hover {
    background: rgba(0, 0, 0, 0.08);
}

.question-card-wrap {
    position: relative;
}

.pause-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.94);
    border-radius: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
}

.pause-overlay .bi {
    font-size: 2.5rem;
    color: var(--quiz-accent, #7048e8);
}

.hint-btn {
    border-radius: 2rem;
}

.hint-text {
    background: #fff8e1;
    border: 1px dashed #ffca28;
    border-radius: 0.75rem;
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
    color: #7a5b00;
    text-align: center;
}

.results-card {
    border: none;
    border-radius: 1.5rem;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.07);
}

.results-stars {
    font-size: 2.75rem;
    letter-spacing: 0.25rem;
}

.results-score {
    font-size: 3rem;
    font-weight: 800;
}

@keyframes pop-in {
    0% { transform: scale(0.85); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.pop-in {
    animation: pop-in 0.25s ease-out;
}

@media (max-width: 400px) {
    .answer-btn {
        font-size: 0.95rem;
    }
}