:root {
    --ink: #263b42;
    --muted: #60777d;
    --paper: #ffffff;
    --background: #eef8f4;
    --green: #27936f;
    --green-dark: #187256;
    --blue: #3c82c4;
    --purple: #8a61bf;
    --orange: #e58b35;
    --yellow: #f4c64e;
    --red: #c95b65;
    --shadow: 0 8px 0 rgba(38, 59, 66, 0.12);
}

* {
    box-sizing: border-box;
}

html,
body {
    min-height: 100%;
    margin: 0;
}

body {
    background: var(--background);
    color: var(--ink);
    font-family: "Trebuchet MS", "Arial Rounded MT Bold", Arial, sans-serif;
    overscroll-behavior: none;
    -webkit-tap-highlight-color: transparent;
}

button,
select,
input {
    font: inherit;
}

button {
    color: inherit;
    touch-action: manipulation;
}

#app {
    width: min(100%, 980px);
    min-height: 100vh;
    margin: 0 auto;
    padding: max(12px, env(safe-area-inset-top)) 18px max(22px, env(safe-area-inset-bottom));
}

.topbar {
    min-height: 58px;
    display: grid;
    grid-template-columns: 52px 1fr 52px;
    align-items: center;
    gap: 8px;
}

.brand {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    font-size: clamp(1rem, 3vw, 1.25rem);
    font-weight: 800;
    text-align: center;
}

.icon-btn {
    width: 48px;
    height: 48px;
    border: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.8);
    font-size: 1.7rem;
    cursor: pointer;
}

.icon-btn:focus-visible,
button:focus-visible,
select:focus-visible,
input:focus-visible {
    outline: 4px solid var(--yellow);
    outline-offset: 3px;
}

.hidden {
    visibility: hidden;
}

.screen {
    display: none;
}

.screen.active {
    display: block;
    animation: fade-in 220ms ease-out;
}

.welcome {
    padding: clamp(18px, 5vw, 42px) 12px 24px;
    text-align: center;
}

.eyebrow {
    margin: 0 0 6px;
    color: var(--green-dark);
    font-size: 0.9rem;
    font-weight: 900;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

h1,
h2,
p {
    margin-top: 0;
}

h1 {
    margin-bottom: 8px;
    font-size: clamp(2rem, 8vw, 3.6rem);
    line-height: 1.05;
}

.welcome p:last-child {
    color: var(--muted);
    font-size: clamp(1rem, 3vw, 1.3rem);
}

.game-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.game-card {
    min-height: 210px;
    padding: 22px 16px;
    border: 4px solid var(--paper);
    border-radius: 28px;
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: transform 120ms ease, box-shadow 120ms ease;
}

.game-card:active {
    transform: translateY(5px);
    box-shadow: 0 3px 0 rgba(38, 59, 66, 0.12);
}

.game-card.letters { background: #e9ddf8; }
.game-card.sounds { background: #dceffc; }
.game-card.counting { background: #fff0d4; }
.game-card.order { background: #dff4e8; }

.card-art {
    min-height: 82px;
    display: flex;
    align-items: center;
    font-size: clamp(2.8rem, 10vw, 5rem);
    font-weight: 900;
    line-height: 1;
}

.card-title {
    margin-top: 14px;
    font-size: clamp(1.25rem, 4vw, 1.65rem);
    font-weight: 900;
}

.card-subtitle {
    margin-top: 5px;
    color: var(--muted);
    font-size: 0.98rem;
}

#game-screen {
    padding-top: 10px;
    text-align: center;
}

.progress-row {
    min-height: 24px;
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 4px 0 22px;
}

.progress-dot {
    width: 18px;
    height: 18px;
    border: 3px solid #b7cdc5;
    border-radius: 50%;
    background: transparent;
}

.progress-dot.done {
    border-color: var(--green);
    background: var(--green);
}

#prompt {
    font-size: clamp(1.9rem, 7vw, 3.2rem);
}

.listen-btn {
    padding: 10px 16px;
    border: 0;
    border-radius: 999px;
    background: #deece7;
    color: var(--green-dark);
    font-weight: 800;
    cursor: pointer;
}

.question-area {
    min-height: 190px;
    margin: 18px auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

.focus-card {
    min-width: min(360px, 90vw);
    min-height: 170px;
    padding: 18px;
    border: 5px solid var(--paper);
    border-radius: 30px;
    background: #e5f2ff;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
}

.focus-letter,
.focus-number {
    font-size: clamp(6rem, 25vw, 10rem);
    font-weight: 900;
    line-height: 1;
}

.picture-emoji {
    font-size: clamp(6rem, 25vw, 9rem);
}

.sr-word {
    color: var(--ink);
    font-size: clamp(1.5rem, 6vw, 2.4rem);
    font-weight: 900;
    text-transform: capitalize;
}

.count-grid {
    width: min(500px, 92vw);
    min-height: 170px;
    padding: 20px;
    border: 5px solid var(--paper);
    border-radius: 30px;
    background: #fff4df;
    box-shadow: var(--shadow);
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-content: center;
    gap: 12px;
}

.count-item {
    width: clamp(48px, 13vw, 72px);
    height: clamp(48px, 13vw, 72px);
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: var(--orange);
    color: white;
    font-size: clamp(1.8rem, 8vw, 3rem);
}

.train {
    display: flex;
    align-items: center;
    gap: clamp(5px, 2vw, 12px);
}

.train-car {
    width: clamp(70px, 22vw, 120px);
    height: clamp(82px, 24vw, 130px);
    border: 5px solid var(--paper);
    border-radius: 22px 22px 14px 14px;
    background: #dff4e8;
    box-shadow: var(--shadow);
    display: grid;
    place-items: center;
    font-size: clamp(2.8rem, 12vw, 5rem);
    font-weight: 900;
}

.train-car.missing {
    border-style: dashed;
    border-color: #93bbaa;
    background: transparent;
    box-shadow: none;
    color: #7ba391;
}

.choices {
    width: min(700px, 100%);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(var(--choice-count, 3), minmax(0, 1fr));
    gap: 14px;
}

.choice-btn {
    min-height: 104px;
    padding: 10px;
    border: 4px solid var(--paper);
    border-radius: 24px;
    background: var(--paper);
    box-shadow: var(--shadow);
    font-size: clamp(2.8rem, 12vw, 5.5rem);
    font-weight: 900;
    cursor: pointer;
    transition: transform 120ms ease, background 120ms ease;
}

.choice-btn:active {
    transform: scale(0.96);
}

.choice-btn.correct {
    background: #c9f1d9;
    border-color: var(--green);
    animation: happy-pop 420ms ease-out;
}

.choice-btn.try-again {
    background: #f7e1e3;
    border-color: var(--red);
}

.choice-btn.hint {
    border-color: var(--yellow);
    box-shadow: 0 0 0 6px rgba(244, 198, 78, 0.25);
}

.feedback {
    min-height: 34px;
    margin: 16px 0 0;
    color: var(--green-dark);
    font-size: 1.25rem;
    font-weight: 900;
}

.celebration {
    padding-top: clamp(60px, 14vh, 130px);
    text-align: center;
}

.big-star {
    color: var(--yellow);
    font-size: clamp(7rem, 30vw, 13rem);
    line-height: 1;
    filter: drop-shadow(0 8px 0 #d9a62b);
    animation: happy-pop 650ms ease-out;
}

.celebration p {
    color: var(--muted);
    font-size: 1.3rem;
}

.primary-btn,
.secondary-btn {
    width: min(360px, 90%);
    min-height: 64px;
    margin: 8px auto;
    border-radius: 18px;
    font-size: 1.2rem;
    font-weight: 900;
    cursor: pointer;
}

.primary-btn {
    border: 0;
    background: var(--green);
    color: white;
    box-shadow: 0 6px 0 var(--green-dark);
}

.secondary-btn {
    border: 3px solid #b7cdc5;
    background: white;
}

dialog {
    width: min(560px, calc(100% - 28px));
    max-height: calc(100vh - 30px);
    padding: 0;
    border: 0;
    border-radius: 26px;
    color: var(--ink);
    box-shadow: 0 20px 70px rgba(38, 59, 66, 0.3);
}

dialog::backdrop {
    background: rgba(25, 47, 54, 0.55);
}

dialog form {
    padding: 24px;
}

.dialog-heading {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.setting-row,
.select-row {
    min-height: 76px;
    padding: 14px 0;
    border-top: 2px solid #e5eeeb;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
}

.setting-row span,
.select-row span {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

small {
    color: var(--muted);
}

input[type="checkbox"] {
    width: 30px;
    height: 30px;
    accent-color: var(--green);
    flex: 0 0 auto;
}

select {
    min-height: 48px;
    padding: 0 10px;
    border: 2px solid #aac3ba;
    border-radius: 12px;
    background: white;
}

dialog .primary-btn {
    display: block;
    margin-top: 18px;
}

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes happy-pop {
    0% { transform: scale(0.8); }
    55% { transform: scale(1.12); }
    100% { transform: scale(1); }
}

body.calm-motion *,
body.calm-motion *::before,
body.calm-motion *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
}

@media (max-width: 620px) {
    #app {
        padding-inline: 12px;
    }

    .game-grid {
        gap: 12px;
    }

    .game-card {
        min-height: 180px;
        padding: 16px 8px;
        border-radius: 22px;
    }

    .card-subtitle {
        display: none;
    }

    .choices {
        gap: 8px;
    }

    .choice-btn {
        min-height: 88px;
        border-radius: 18px;
    }

    .question-area {
        min-height: 170px;
        margin-block: 12px;
    }

    .focus-card {
        flex-direction: column;
        gap: 4px;
    }

    .select-row {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 1ms !important;
    }
}