/* Edukids Islas — Design (DESIGN.md) */
:root {
    --sky-top: #5BB8E8;
    --sky-bottom: #D4EFFA;
    --sky-glow: #FFF8E7;
    --ocean-deep: #155A75;
    --ocean-shallow: #3D9BB8;
    --ocean-surface: #7ECBE0;
    --sand: #F7E4C4;
    --sand-dark: #E8CFA0;
    --surface-card: #FFFFFF;
    --surface-elevated: #FFFCF7;
    --surface-hub: rgba(255, 255, 255, 0.78);
    --ink-primary: #2A1845;
    --ink-secondary: #5A4870;
    --ink-on-dark: #FFFFFF;
    --ink-muted: #8A7DA0;
    --accent-brand: #FF9F43;
    --accent-brand-hover: #F2850E;
    --accent-brand-active: #D9720A;
    --accent-brand-glow: rgba(255, 159, 67, 0.38);
    --island-memory: #6C5CE7;
    --island-memory-soft: #EEEAFF;
    --island-operations: #FF7675;
    --island-operations-soft: #FFEBEB;
    --island-quiz: #00B894;
    --island-quiz-soft: #E0F8F1;
    --island-words: #FDCB6E;
    --island-words-soft: #FFF4DC;
    --island-code: #00CEC9;
    --island-code-soft: #E0FAF8;
    --success: #22C55E;
    --success-soft: #DCFCE7;
    --success-glow: rgba(34, 197, 94, 0.35);
    --error-soft: #FF9F68;
    --error-bg: #FFF4EB;
    --warning: #FFB020;
    --star-filled: #FFB020;
    --star-empty: #D4C8E8;
    --star-glow: rgba(255, 176, 32, 0.5);
    --border-hairline: #DDD2EE;
    --border-strong: #C4B5DC;
    --focus-ring: #6C5CE7;
    --overlay-scrim: rgba(42, 24, 69, 0.5);
    --ripple-accent: rgba(108, 92, 231, 0.18);
    --rounded-sm: 8px;
    --rounded-md: 16px;
    --rounded-lg: 24px;
    --rounded-xl: 32px;
    --rounded-full: 9999px;
    --spacing-1: 4px;
    --spacing-2: 8px;
    --spacing-3: 12px;
    --spacing-4: 16px;
    --spacing-5: 24px;
    --spacing-6: 32px;
    --spacing-7: 48px;
    --gutter-mobile: 16px;
    --gutter-tablet: 24px;
    --island-gap: 20px;
    --tap-min: 48px;
    --shadow-island: 0 6px 0 var(--ocean-deep);
    --shadow-island-hover: 0 8px 0 var(--ocean-deep);
    --shadow-float: 0 12px 40px rgba(21, 90, 117, 0.15);
    --shadow-btn-primary: 0 4px 0 var(--accent-brand-active);
    --shadow-btn-primary-active: 0 1px 0 var(--accent-brand-active);
    --transition-fast: 150ms ease;
    --transition-nav: 200ms ease;
    --transition-bounce: 350ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', system-ui, sans-serif;
    margin: 0;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    color: var(--ink-primary);
    background: linear-gradient(180deg, var(--sky-top) 0%, var(--sky-bottom) 50%, var(--sky-glow) 78%, var(--ocean-shallow) 100%);
    overflow-x: hidden;
    -webkit-text-size-adjust: 100%;
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
}

/* App shell */
.app-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) max(var(--gutter-mobile), env(safe-area-inset-left)) var(--spacing-3) max(var(--gutter-mobile), env(safe-area-inset-right));
    background: var(--surface-card);
    border-bottom: 2px solid var(--border-hairline);
    flex-wrap: wrap;
}

.app-header__logo {
    height: 2.75rem;
    width: auto;
}

.app-header__info {
    flex: 1;
    min-width: 0;
}

.app-header__title {
    margin: 0;
    font-size: clamp(1rem, 3vw, 1.25rem);
    font-weight: 600;
    color: var(--ink-primary);
    line-height: 1.25;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.app-header__user {
    font-size: 0.875rem;
    color: var(--ink-secondary);
    font-weight: 600;
}

.app-header__timer {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--ink-muted);
    white-space: nowrap;
    flex-shrink: 0;
    min-width: 3.5rem;
    text-align: right;
}

.app-main {
    flex: 1;
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
    padding: var(--spacing-4) max(var(--gutter-mobile), env(safe-area-inset-left)) var(--spacing-6) max(var(--gutter-mobile), env(safe-area-inset-right));
    min-width: 0;
}

.app-footer {
    background: var(--ocean-deep);
    color: var(--ink-on-dark);
    text-align: center;
    padding: var(--spacing-3) max(var(--gutter-mobile), env(safe-area-inset-left)) calc(var(--spacing-3) + env(safe-area-inset-bottom)) max(var(--gutter-mobile), env(safe-area-inset-right));
    font-size: 0.875rem;
}

.app-footer a {
    color: var(--accent-brand);
    text-decoration: none;
    font-weight: 600;
}

/* Sections */
section {
    animation: fadeIn var(--transition-nav) ease-out;
}

section[style*="display: none;"] {
    display: none !important;
}

.section-card {
    background: var(--surface-card);
    border-radius: var(--rounded-xl);
    padding: var(--spacing-5);
    box-shadow: var(--shadow-float);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    width: 100%;
    min-width: 0;
}

.section-card .btn-primary,
.section-card .btn-secondary {
    width: 100%;
}

.section-hub {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.section-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.btn-login-sobre {
    margin-top: var(--spacing-1);
}

.btn-volver-info {
    align-self: flex-start;
}

.display-title {
    margin: 0;
    font-size: clamp(1.75rem, 5vw, 2.75rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.02em;
    text-align: center;
    color: var(--ink-primary);
}

.title-text {
    margin: 0;
    font-size: clamp(1.25rem, 3vw, 1.5rem);
    font-weight: 600;
    line-height: 1.25;
    color: var(--ink-primary);
    text-align: center;
}

.body-text {
    margin: 0;
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    line-height: 1.5;
    color: var(--ink-secondary);
    text-align: center;
}

.body-large {
    margin: 0;
    font-size: clamp(1.125rem, 3vw, 1.375rem);
    line-height: 1.45;
    color: var(--ink-secondary);
    text-align: center;
}

.label-text {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--ink-secondary);
}

.hub-subtitle {
    margin-top: calc(var(--spacing-2) * -1);
}

/* Age picker */
.age-picker {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3);
}

.age-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    min-height: var(--tap-min);
    padding: var(--spacing-4);
    background: var(--surface-elevated);
    border: 3px solid var(--border-hairline);
    border-radius: var(--rounded-lg);
    cursor: pointer;
    transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
    font-family: inherit;
    color: var(--ink-primary);
}

.age-card:hover {
    border-color: var(--island-memory);
}

.age-card--selected {
    border-color: var(--island-memory);
    box-shadow: 0 0 0 4px var(--ripple-accent);
    background: var(--surface-card);
}

.age-card__icon {
    font-size: 2rem;
}

.age-card__label {
    font-weight: 600;
    font-size: 0.9375rem;
}

/* Inputs */
.input-field {
    width: 100%;
    min-height: var(--tap-min);
    padding: var(--spacing-3) var(--spacing-4);
    border: 2px solid var(--border-hairline);
    border-radius: var(--rounded-md);
    font-family: inherit;
    font-size: 1rem;
    color: var(--ink-primary);
    background: var(--surface-card);
    transition: border-color var(--transition-fast);
}

.input-field:focus {
    outline: none;
    border-color: var(--accent-brand);
}

.input-field:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: var(--tap-min);
    padding: 0 var(--spacing-6);
    background: linear-gradient(180deg, var(--accent-brand) 0%, #FF8C2A 100%);
    color: var(--ink-on-dark);
    border: none;
    border-radius: var(--rounded-full);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    box-shadow: var(--shadow-btn-primary);
    transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary:hover {
    background: linear-gradient(180deg, var(--accent-brand-hover) 0%, var(--accent-brand-active) 100%);
}

.btn-primary:active {
    transform: scale(0.96) translateY(2px);
    box-shadow: var(--shadow-btn-primary-active);
}

.btn-primary:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: var(--tap-min);
    padding: 0 var(--spacing-5);
    background: var(--surface-card);
    color: var(--ink-primary);
    border: 2px solid var(--border-hairline);
    border-radius: var(--rounded-full);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

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

.btn-secondary:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
}

.btn-ghost {
    background: transparent;
    border: none;
    color: var(--ink-secondary);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    min-height: var(--tap-min);
    padding: var(--spacing-2) var(--spacing-3);
}

.btn-ghost:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
    border-radius: var(--rounded-sm);
}

.btn-sm {
    font-size: 0.8125rem;
    min-height: 36px;
}

.btn-danger-soft {
    border-color: var(--error-soft);
    color: var(--ink-primary);
}

.btn-sonido {
    font-size: 1.25rem;
    min-height: 40px;
    padding: var(--spacing-2);
}

.btn-sonido--off {
    opacity: 0.5;
}

.btn-sonido {
    flex-shrink: 0;
}

/* Feedback banners */
.feedback-inline {
    margin: 0;
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--rounded-md);
    font-size: 0.9375rem;
    font-weight: 600;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.feedback-linea {
    display: block;
}

.feedback-respuesta {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--ink-primary);
}

.feedback-respuesta strong {
    font-weight: 700;
}

.feedback-extra {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    line-height: 1.45;
    color: var(--ink-secondary);
    text-wrap: pretty;
    word-break: break-word;
}

.feedback-success {
    background: var(--success-soft);
    border: 2px solid var(--success);
    color: var(--ink-primary);
    animation: successPulse 600ms ease-out;
}

.feedback-error {
    background: var(--error-bg);
    border: 2px solid var(--error-soft);
    color: var(--ink-primary);
}

.feedback-info {
    background: var(--surface-elevated);
    border: 2px solid var(--border-hairline);
    color: var(--ink-secondary);
}

/* Hub */
.hub-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.hub-tabs {
    display: flex;
    gap: var(--spacing-2);
    background: var(--surface-card);
    padding: var(--spacing-1);
    border-radius: var(--rounded-full);
    box-shadow: var(--shadow-float);
    flex: 1 1 auto;
    min-width: 0;
    max-width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.hub-tabs::-webkit-scrollbar {
    display: none;
}

.hub-tab {
    border: none;
    background: transparent;
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--rounded-full);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.8125rem;
    color: var(--ink-secondary);
    cursor: pointer;
    min-height: 36px;
    white-space: nowrap;
}

@media (min-width: 480px) {
    .hub-tab {
        padding: var(--spacing-2) var(--spacing-4);
        font-size: 0.875rem;
    }
}

.hub-tab--active {
    background: var(--ink-primary);
    color: var(--ink-on-dark);
}

.hub-map-panel {
    background:
        radial-gradient(ellipse 120% 80% at 50% 100%, rgba(247, 228, 196, 0.35) 0%, transparent 55%),
        linear-gradient(180deg, rgba(126, 203, 224, 0.45) 0%, rgba(61, 155, 184, 0.72) 55%, rgba(21, 90, 117, 0.55) 100%);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border: 2px solid rgba(255, 255, 255, 0.55);
    border-radius: var(--rounded-xl);
    padding: var(--spacing-5) var(--spacing-4) var(--spacing-6);
    box-shadow: var(--shadow-float), inset 0 1px 0 rgba(255, 255, 255, 0.45);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    position: relative;
    overflow: hidden;
}

.hub-map-panel::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 80% 60%, rgba(255, 255, 255, 0.08) 0%, transparent 35%);
    pointer-events: none;
}

.hub-map-panel .title-text,
.hub-map-panel .body-text,
.hub-map-panel .hub-subtitle {
    position: relative;
    z-index: 1;
    color: var(--ink-on-dark);
    text-shadow: 0 1px 2px rgba(21, 90, 117, 0.35);
}

.hub-map-panel .hub-subtitle {
    color: rgba(255, 255, 255, 0.92);
}

.hub-map-panel .feedback-inline {
    position: relative;
    z-index: 1;
    background: rgba(255, 255, 255, 0.92);
}

.hub-map-panel::after {
    content: '';
    position: absolute;
    bottom: var(--spacing-3);
    left: 8%;
    right: 8%;
    height: 6px;
    background: linear-gradient(90deg, transparent, var(--sand-dark), var(--sand), var(--sand-dark), transparent);
    border-radius: var(--rounded-full);
    opacity: 0.55;
    z-index: 0;
}

.hub-panel {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.hub-panel[hidden] {
    display: none !important;
}

/* Island grid — formas organicas flotando en el mar */
.islands-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--island-gap) + 8px);
    position: relative;
    z-index: 1;
    padding: var(--spacing-2) 0;
}

.islands-grid--enter .island-card {
    animation: islandStaggerIn 400ms ease-out backwards;
}

.islands-grid--enter .island-card:nth-child(1) { animation-delay: 0ms; }
.islands-grid--enter .island-card:nth-child(2) { animation-delay: 80ms; }
.islands-grid--enter .island-card:nth-child(3) { animation-delay: 160ms; }
.islands-grid--enter .island-card:nth-child(4) { animation-delay: 240ms; }
.islands-grid--enter .island-card:nth-child(5) { animation-delay: 320ms; }

.island-card {
    position: relative;
    display: block;
    width: 100%;
    min-height: 132px;
    padding: 0 0 var(--spacing-3);
    background: transparent;
    border: none;
    cursor: pointer;
    font-family: inherit;
    color: var(--ink-primary);
    transition: transform var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.island-card::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 12%;
    right: 12%;
    height: 14px;
    background: radial-gradient(ellipse, rgba(21, 90, 117, 0.45) 0%, rgba(61, 155, 184, 0.2) 55%, transparent 72%);
    border-radius: 50%;
    filter: blur(1px);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
    pointer-events: none;
}

.island-card__land {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-1);
    min-height: 118px;
    padding: var(--spacing-4) var(--spacing-3) var(--spacing-5);
    border: 2px solid rgba(255, 255, 255, 0.65);
    box-shadow:
        0 8px 0 rgba(21, 90, 117, 0.35),
        inset 0 2px 8px rgba(255, 255, 255, 0.55);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}

.island-card__land::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(ellipse 90% 50% at 50% 85%, rgba(232, 207, 160, 0.85) 0%, transparent 62%);
    pointer-events: none;
}

.island-card__land > * {
    position: relative;
    z-index: 1;
}

@media (hover: hover) {
    .island-card:hover:not(.island-card--locked) {
        transform: translateY(-4px);
    }

    .island-card:hover:not(.island-card--locked)::after {
        transform: scaleX(1.08);
        opacity: 0.85;
    }

    .island-card:hover:not(.island-card--locked) .island-card__land {
        transform: translateY(-2px);
        box-shadow:
            0 10px 0 rgba(21, 90, 117, 0.38),
            inset 0 2px 8px rgba(255, 255, 255, 0.6);
    }
}

.island-card:active:not(.island-card--locked) {
    transform: scale(0.97) translateY(2px);
}

.island-card:active:not(.island-card--locked) .island-card__land {
    transform: translateY(4px);
    box-shadow:
        0 3px 0 rgba(21, 90, 117, 0.4),
        inset 0 1px 4px rgba(255, 255, 255, 0.4);
}

.island-card:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 4px;
    border-radius: var(--rounded-lg);
}

/* Silueta distinta por isla (border-radius organico + clip-path) */
.island-card--memory .island-card__land {
    border-radius: 58% 42% 45% 55% / 52% 48% 58% 42%;
    background:
        radial-gradient(ellipse 80% 55% at 50% 25%, var(--island-memory-soft) 0%, transparent 70%),
        linear-gradient(175deg, #f8f5ff 0%, var(--island-memory-soft) 38%, var(--sand) 78%, var(--sand-dark) 100%);
    border-color: rgba(108, 92, 231, 0.35);
}

.island-card--operations .island-card__land {
    border-radius: 48% 52% 58% 42% / 55% 45% 50% 50%;
    background:
        radial-gradient(ellipse 75% 50% at 45% 22%, var(--island-operations-soft) 0%, transparent 68%),
        linear-gradient(168deg, #fff8f8 0%, var(--island-operations-soft) 40%, var(--sand) 80%, var(--sand-dark) 100%);
    border-color: rgba(255, 118, 117, 0.35);
}

.island-card--quiz .island-card__land {
    border-radius: 52% 48% 42% 58% / 48% 58% 42% 52%;
    background:
        radial-gradient(ellipse 70% 48% at 55% 20%, var(--island-quiz-soft) 0%, transparent 65%),
        linear-gradient(172deg, #f4fffb 0%, var(--island-quiz-soft) 42%, var(--sand) 82%, var(--sand-dark) 100%);
    border-color: rgba(0, 184, 148, 0.35);
}

.island-card--words .island-card__land {
    border-radius: 44% 56% 50% 50% / 50% 42% 58% 50%;
    background:
        radial-gradient(ellipse 78% 52% at 50% 28%, var(--island-words-soft) 0%, transparent 66%),
        linear-gradient(165deg, #fffdf5 0%, var(--island-words-soft) 36%, var(--sand) 79%, var(--sand-dark) 100%);
    border-color: rgba(253, 203, 110, 0.45);
}

.island-card--code .island-card__land {
    border-radius: 48% 52% 46% 54% / 52% 48% 52% 48%;
    background:
        radial-gradient(ellipse 78% 52% at 50% 28%, var(--island-code-soft) 0%, transparent 66%),
        linear-gradient(165deg, #f5fffe 0%, var(--island-code-soft) 36%, var(--sand) 79%, var(--sand-dark) 100%);
    border-color: rgba(0, 206, 201, 0.45);
}

.island-card--memory.island-card--completed-today .island-card__land,
.island-card--operations.island-card--completed-today .island-card__land,
.island-card--quiz.island-card--completed-today .island-card__land,
.island-card--words.island-card--completed-today .island-card__land,
.island-card--code.island-card--completed-today .island-card__land {
    box-shadow:
        0 8px 0 rgba(21, 90, 117, 0.35),
        0 0 0 3px var(--star-filled),
        0 0 16px var(--star-glow),
        inset 0 2px 8px rgba(255, 255, 255, 0.55);
}

.island-card--locked {
    cursor: not-allowed;
}

.island-card--locked::after {
    opacity: 0.25;
}

.island-card--locked .island-card__land {
    filter: grayscale(0.45) opacity(0.72);
    box-shadow: 0 4px 0 rgba(21, 90, 117, 0.2);
}

.island-card--locked .island-card__mascot {
    display: none;
}

.island-card--shake {
    animation: shake 400ms ease;
}

.island-card__mascot {
    font-size: 2rem;
}

.island-card__lock {
    font-size: 1.5rem;
}

.island-card__lock--wiggle {
    animation: lockWiggle 150ms ease;
}

.island-card__title {
    font-weight: 600;
    font-size: 0.9375rem;
}

.island-card__stars {
    font-size: 1rem;
    color: var(--star-filled);
    letter-spacing: 2px;
}

.island-card__badge {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--ink-muted);
    background: var(--border-hairline);
    padding: 2px 8px;
    border-radius: var(--rounded-full);
}

/* Game shell */
.section-game {
    gap: var(--spacing-3);
}

.game-shell__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-2);
    flex-wrap: wrap;
    width: 100%;
}

.game-shell__header .btn-ghost {
    flex: 1 1 auto;
    min-width: 0;
    text-align: left;
    padding-left: 0;
}

.game-stars {
    font-size: clamp(1rem, 4vw, 1.25rem);
    color: var(--star-filled);
    letter-spacing: 2px;
    flex-shrink: 0;
}

.stars--pop {
    animation: starPop var(--transition-bounce);
}

.game-stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-4);
    min-height: 200px;
    width: 100%;
    min-width: 0;
}

.mascot-bubble {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--surface-elevated);
    border-radius: var(--rounded-lg);
    border: 2px solid var(--island-memory);
    width: 100%;
    max-width: min(100%, 420px);
    position: relative;
}

.mascot-bubble::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 2.5rem;
    border: 10px solid transparent;
    border-top-color: var(--island-memory);
    border-bottom: 0;
}

.mascot-bubble__icon {
    font-size: 2rem;
    flex-shrink: 0;
    animation: mascotPulse 2s ease-in-out infinite;
}

.mascot-bubble__text {
    margin: 0;
    font-weight: 700;
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--ink-primary);
}

.mascot-bubble--operations {
    border-color: var(--island-operations);
}

.mascot-bubble--quiz {
    border-color: var(--island-quiz);
}

.mascot-bubble--words {
    border-color: var(--island-words);
}

.mascot-bubble--code {
    border-color: var(--island-code);
}

.op-display {
    font-size: clamp(1.75rem, 8vw, 3rem);
    font-weight: 700;
    color: var(--ink-primary);
    background: var(--surface-elevated);
    border: 3px solid var(--island-operations);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-4) var(--spacing-5);
    text-align: center;
    width: 100%;
    max-width: min(100%, 420px);
    word-break: break-word;
}

.op-options {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-3);
    width: 100%;
    max-width: min(100%, 420px);
}

.op-option {
    min-height: var(--tap-min);
    border: 3px solid var(--border-hairline);
    border-radius: var(--rounded-md);
    background: var(--surface-card);
    font-family: inherit;
    font-size: clamp(1.25rem, 4vw, 1.75rem);
    font-weight: 700;
    color: var(--ink-primary);
    cursor: pointer;
    transition: transform var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.op-option:hover {
    border-color: var(--island-operations);
}

.op-option:active {
    transform: scale(0.96);
}

.op-option--correct {
    background: var(--success-soft);
    border-color: var(--success);
}

.op-option--wrong {
    background: var(--error-bg);
    border-color: var(--error-soft);
    opacity: 0.85;
}

.op-option:focus-visible {
    outline: 3px solid var(--accent-brand);
    outline-offset: 2px;
}

.op-options--shake {
    animation: shake 400ms ease;
}

.quiz-question {
    font-size: clamp(1.125rem, 3.5vw, 1.375rem);
    font-weight: 600;
    color: var(--ink-primary);
    background: var(--surface-elevated);
    border: 3px solid var(--island-quiz);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-4) var(--spacing-5);
    text-align: center;
    width: 100%;
    max-width: min(100%, 420px);
    line-height: 1.4;
}

.quiz-cards {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    width: 100%;
    max-width: min(100%, 420px);
}

.quiz-card {
    min-height: var(--tap-min);
    padding: var(--spacing-4);
    border: 3px solid var(--border-hairline);
    border-radius: var(--rounded-md);
    background: var(--surface-card);
    font-family: inherit;
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    font-weight: 600;
    color: var(--ink-primary);
    text-align: left;
    cursor: pointer;
    transition: transform var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.quiz-card:hover {
    border-color: var(--island-quiz);
}

.quiz-card:active {
    transform: scale(0.96);
}

.quiz-card--correct {
    background: var(--success-soft);
    border-color: var(--success);
}

.quiz-card--wrong {
    background: var(--error-bg);
    border-color: var(--error-soft);
    opacity: 0.85;
}

.quiz-card:focus-visible {
    outline: 3px solid var(--accent-brand);
    outline-offset: 2px;
}

.quiz-cards--shake {
    animation: shake 400ms ease;
}

.words-hint {
    width: 100%;
    max-width: min(100%, 420px);
    padding: var(--spacing-4);
    background: var(--surface-elevated);
    border: 3px solid var(--island-words);
    border-radius: var(--rounded-lg);
    text-align: center;
}

.words-hint--stack {
    text-align: left;
}

.words-scaffold-wrap {
    width: 100%;
    max-width: min(100%, 420px);
    text-align: center;
    margin-bottom: var(--spacing-3);
}

.words-reveal {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-2);
    margin: 0 auto var(--spacing-2);
}

.words-slot {
    position: relative;
    min-width: 1.75rem;
    width: clamp(1.75rem, 5vw, 2.25rem);
    height: 2.75rem;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: var(--spacing-1);
}

.words-slot__letter {
    font-size: clamp(1.25rem, 4vw, 1.625rem);
    font-weight: 700;
    color: var(--island-words);
    line-height: 1;
    min-height: 1.5rem;
}

.words-slot__line {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--border-hairline);
    border-radius: var(--rounded-full);
    transform-origin: left center;
    transition: background var(--transition-fast), transform 400ms ease-out;
}

.words-slot--revealed .words-slot__line {
    background: var(--island-words);
    animation: wordsLineFill 450ms ease-out forwards;
}

.words-slot--revealed .words-slot__letter {
    animation: wordsLetterPop 350ms ease-out;
}

.words-meta-hint {
    margin: 0;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--ink-muted);
}

.words-pistas {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    margin: var(--spacing-2) 0 var(--spacing-3);
}

.words-pista {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
    margin: 0;
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--rounded-md);
    background: var(--surface-card);
    border: 2px solid transparent;
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    font-weight: 600;
    color: var(--ink-secondary);
    line-height: 1.4;
    opacity: 0.75;
}

.words-pista--active {
    opacity: 1;
    border-color: var(--island-words);
    background: var(--island-words-soft);
    color: var(--ink-primary);
}

.words-pista__num {
    flex-shrink: 0;
    width: 1.5rem;
    height: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--rounded-full);
    background: var(--island-words);
    color: var(--surface-card);
    font-size: 0.75rem;
    font-weight: 700;
}

.words-options-label {
    width: 100%;
    max-width: min(100%, 420px);
    margin: var(--spacing-4) 0 var(--spacing-2);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--ink-muted);
    text-align: center;
}

.words-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    width: 100%;
    max-width: min(100%, 420px);
}

.words-option {
    min-height: var(--tap-min);
    padding: var(--spacing-3) var(--spacing-4);
    border: 3px solid var(--border-hairline);
    border-radius: var(--rounded-md);
    background: var(--surface-card);
    font-family: inherit;
    text-align: left;
    cursor: pointer;
    transition: transform var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

.words-option__main {
    display: block;
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    font-weight: 700;
    color: var(--ink-primary);
    letter-spacing: 0.04em;
}

.words-option__sub {
    display: block;
    margin-top: var(--spacing-1);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--ink-muted);
}

.words-option:hover {
    border-color: var(--island-words);
}

.words-option:active {
    transform: scale(0.98);
}

.words-option--correct {
    background: var(--success-soft);
    border-color: var(--success);
}

.words-option--wrong {
    background: var(--error-bg);
    border-color: var(--error-soft);
    opacity: 0.85;
}

.words-option:focus-visible {
    outline: 3px solid var(--accent-brand);
    outline-offset: 2px;
}

.words-options--shake {
    animation: shake 400ms ease;
}

.words-form--compact {
    margin-top: var(--spacing-4);
}

.words-form__row {
    display: flex;
    gap: var(--spacing-2);
    align-items: stretch;
}

.words-form__row .input-field {
    flex: 1;
}

.words-form__row .btn-primary {
    flex-shrink: 0;
    min-width: 5.5rem;
}

/* Isla Codigo — flujo, pasos, robot */
.flow-panel {
    width: 100%;
    max-width: min(100%, 420px);
}

.flow-panel__title {
    margin: 0 0 var(--spacing-3);
    font-size: clamp(1rem, 2.5vw, 1.125rem);
    font-weight: 600;
    color: var(--ink-secondary);
    text-align: center;
}

.flow-slot-rail {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
    padding: var(--spacing-3);
    background: var(--surface-elevated);
    border: 2px solid var(--border-hairline);
    border-radius: var(--rounded-lg);
}

.flow-slot {
    min-width: 4.5rem;
    min-height: var(--tap-min);
    padding: var(--spacing-2);
    border: 3px dashed var(--border-hairline);
    border-radius: var(--rounded-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-1);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--ink-muted);
}

.flow-slot--filled {
    border-style: solid;
    border-color: var(--island-code);
    background: var(--surface-card);
    color: var(--ink-primary);
}

.flow-slot__emoji {
    font-size: 1.25rem;
    line-height: 1;
}

.flow-connector {
    color: var(--ink-muted);
    font-weight: 700;
    user-select: none;
}

.flow-pool {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-2);
}

.flow-block {
    min-height: var(--tap-min);
    min-width: 5.5rem;
    padding: var(--spacing-2) var(--spacing-3);
    border: 3px solid var(--border-hairline);
    border-radius: var(--rounded-md);
    background: var(--surface-card);
    font-family: inherit;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-1);
    transition: transform var(--transition-fast), border-color var(--transition-fast), opacity var(--transition-fast);
}

.flow-block__emoji {
    font-size: 1.25rem;
    line-height: 1;
}

.flow-block__label {
    font-size: 0.6875rem;
    font-weight: 600;
    text-align: center;
    line-height: 1.2;
    color: var(--ink-secondary);
}

.flow-block--inicio { border-color: #22C55E; }
.flow-block--accion { border-color: var(--island-code); }
.flow-block--decision { border-color: var(--island-memory); }
.flow-block--fin { border-color: var(--error-soft); }

.flow-block:hover:not(:disabled) {
    transform: scale(1.02);
}

.flow-block:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}

.flow-pool--shake,
.robot-panel--shake {
    animation: shake 400ms ease;
}

.code-scenario {
    width: 100%;
    max-width: min(100%, 420px);
    padding: var(--spacing-4);
    margin-bottom: var(--spacing-3);
    background: var(--island-code-soft);
    border: 2px solid var(--island-code);
    border-radius: var(--rounded-md);
    text-align: center;
    font-weight: 600;
    color: var(--ink-primary);
    line-height: 1.4;
}

.robot-panel {
    width: 100%;
    max-width: min(100%, 420px);
}

.robot-seq {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
    min-height: 2.5rem;
    padding: var(--spacing-2);
    background: var(--surface-elevated);
    border-radius: var(--rounded-md);
    border: 2px solid var(--border-hairline);
}

.robot-seq__label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--ink-muted);
}

.robot-seq__cmd {
    min-width: 2rem;
    padding: var(--spacing-1) var(--spacing-2);
    background: var(--island-code-soft);
    border: 2px solid var(--island-code);
    border-radius: var(--rounded-sm);
    font-weight: 700;
    font-size: 1rem;
}

.robot-grid {
    display: grid;
    grid-template-columns: repeat(var(--robot-cols, 3), minmax(0, 1fr));
    gap: var(--spacing-2);
    margin: 0 auto var(--spacing-4);
    max-width: min(100%, 18rem);
}

.robot-cell {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(1.125rem, 4vw, 1.5rem);
    background: var(--surface-card);
    border: 2px solid var(--border-hairline);
    border-radius: var(--rounded-sm);
    transition: background var(--transition-fast), box-shadow var(--transition-fast);
}

.robot-cell--wall {
    background: var(--ink-muted);
    color: var(--surface-card);
    font-size: 0.875rem;
}

.robot-cell--goal {
    background: var(--island-code-soft);
    border-color: var(--island-code);
}

.robot-cell--robot {
    background: var(--success-soft);
    box-shadow: 0 0 0 3px var(--success-glow);
}

.cmd-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-3);
}

.cmd-button {
    min-width: var(--tap-min);
    min-height: var(--tap-min);
    padding: var(--spacing-2);
    border: 3px solid var(--border-hairline);
    border-radius: var(--rounded-md);
    background: var(--surface-card);
    font-family: inherit;
    font-size: 1.25rem;
    font-weight: 700;
    cursor: pointer;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.cmd-button:hover:not(:disabled) {
    border-color: var(--island-code);
}

.cmd-button:active:not(:disabled) {
    transform: scale(0.96);
}

.cmd-button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.robot-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-2);
}

.progreso-isla-card--code { border-color: var(--island-code); }
.historial-item--code { border-left-color: var(--island-code); }
.info-isla-item--code { border-left-color: var(--island-code); }

@keyframes wordsLineFill {
    from { transform: scaleX(0.15); }
    to { transform: scaleX(1); }
}

@keyframes wordsLetterPop {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.words-hint__label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--ink-muted);
    margin-bottom: var(--spacing-2);
}

.words-hint__text {
    margin: 0;
    font-size: clamp(1.125rem, 3vw, 1.375rem);
    font-weight: 600;
    color: var(--ink-primary);
    line-height: 1.4;
}

.words-hint-dots {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2);
    margin-top: var(--spacing-3);
}

.words-hint-dot {
    width: 10px;
    height: 10px;
    border-radius: var(--rounded-full);
    background: var(--border-hairline);
}

.words-hint-dot--active {
    background: var(--island-words);
}

.words-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    width: 100%;
    max-width: min(100%, 420px);
}

.words-form--shake {
    animation: shake 400ms ease;
}

.phase-bar {
    width: 100%;
    max-width: min(100%, 420px);
    text-align: center;
    padding: var(--spacing-3);
    background: var(--surface-elevated);
    border-radius: var(--rounded-md);
    border: 2px solid var(--border-hairline);
}

.phase-bar__text {
    display: block;
    font-weight: 600;
    color: var(--ink-secondary);
    margin-bottom: var(--spacing-2);
}

.phase-bar__dots {
    display: flex;
    justify-content: center;
    gap: var(--spacing-2);
}

.phase-bar__dot {
    width: 8px;
    height: 8px;
    border-radius: var(--rounded-full);
    background: var(--border-hairline);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.phase-bar__dot--active {
    background: var(--island-memory);
    transform: scale(1.35);
}

.phase-bar__dot--done {
    background: var(--success);
}

/* Memory tiles */
.memory-tiles {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--spacing-3);
    width: 100%;
    max-width: min(100%, 20rem);
    margin: 0 auto;
}

.memory-tile {
    width: 100%;
    aspect-ratio: 1;
    max-width: 5.5rem;
    height: auto;
    justify-self: center;
    border: 3px solid var(--border-hairline);
    border-radius: var(--rounded-md);
    background: linear-gradient(135deg, var(--ocean-shallow), var(--ocean-deep));
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: clamp(1.25rem, 6vw, 1.75rem);
    transition: transform 300ms ease-in-out, background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
    font-family: inherit;
    padding: 0;
    perspective: 600px;
}

.memory-tile--show {
    background: var(--surface-card);
    border-color: var(--island-memory);
    transform: scale(1.1);
    box-shadow: 0 0 0 4px var(--ripple-accent);
}

.memory-tile--correct {
    background: var(--success-soft);
    border-color: var(--success);
    animation: successPulse 600ms ease-out;
}

.memory-tile--wrong {
    background: var(--error-bg);
    border-color: var(--error-soft);
}

.memory-tile--disabled {
    pointer-events: none;
    opacity: 0.7;
}

.memory-stage {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 8.5rem;
    width: 100%;
    max-width: min(100%, 420px);
    margin: 0 auto;
}

.memory-tile--stage {
    max-width: 6.5rem;
    width: 6.5rem;
}

.memory-tile--ocean {
    background: linear-gradient(135deg, var(--ocean-shallow), var(--ocean-deep));
}

.memory-tiles--wide {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    max-width: min(100%, 26rem);
}

.memory-tiles--wide-lg {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    max-width: min(100%, 28rem);
}

.memory-tile:focus-visible {
    outline: 3px solid var(--focus-ring);
    outline-offset: 2px;
}

.memory-tile--shake,
.memory-tiles--shake {
    animation: shake 400ms ease;
}

/* Report */
.section-report {
    position: relative;
    text-align: center;
}

.reporte-contenido {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-3);
}

.reporte-tiempo {
    color: var(--ink-secondary);
    font-size: 0.9375rem;
}

.reporte-stars {
    font-size: 2.5rem;
    color: var(--star-filled);
    letter-spacing: 6px;
    text-shadow: 0 0 20px var(--star-glow);
}

.reporte-stars--cascade {
    animation: starPop var(--transition-bounce);
}

.reporte-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.confetti-container {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.confetti-particle {
    position: absolute;
    width: 8px;
    height: 8px;
    border-radius: 2px;
    top: -10px;
    animation: confettiFall 1.5s ease forwards;
}

/* Progress panel */
.progreso-header {
    text-align: center;
}

.progreso-header .body-text {
    margin-top: calc(var(--spacing-2) * -1);
}

.progreso-section-title {
    margin: 0 0 var(--spacing-3);
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink-primary);
}

.progreso-resumen,
.progreso-historial,
.progreso-ranking {
    background: var(--surface-card);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-4);
    box-shadow: var(--shadow-float);
}

.progreso-islas-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3);
}

@media (min-width: 768px) {
    .progreso-islas-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.progreso-isla-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-3);
    border-radius: var(--rounded-md);
    background: var(--surface-elevated);
    border: 2px solid var(--border-hairline);
    text-align: center;
}

.progreso-isla-card--memory { border-color: var(--island-memory); }
.progreso-isla-card--operations { border-color: var(--island-operations); }
.progreso-isla-card--quiz { border-color: var(--island-quiz); }
.progreso-isla-card--words { border-color: var(--island-words); }

.progreso-isla-card__emoji {
    font-size: 1.5rem;
}

.progreso-isla-card__nombre {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--ink-secondary);
}

.progreso-isla-card__stars {
    font-size: 0.875rem;
    color: var(--warning);
    letter-spacing: 1px;
}

.historial-lista,
.ranking-lista {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-3);
    max-height: min(50vh, 320px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.historial-lista li,
.ranking-lista li {
    margin-bottom: var(--spacing-2);
}

.historial-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-2);
    padding: var(--spacing-3);
    background: var(--surface-elevated);
    border-radius: var(--rounded-md);
    border-left: 4px solid var(--border-hairline);
    flex-wrap: wrap;
}

.historial-item--memory { border-left-color: var(--island-memory); }
.historial-item--operations { border-left-color: var(--island-operations); }
.historial-item--quiz { border-left-color: var(--island-quiz); }
.historial-item--words { border-left-color: var(--island-words); }

.historial-item__icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.historial-item__body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.historial-item__isla {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--ink-primary);
}

.historial-item__meta {
    font-size: 0.8125rem;
    color: var(--ink-muted);
}

.historial-item__stars {
    font-size: 0.875rem;
    color: var(--warning);
    letter-spacing: 2px;
}

.progreso-vacio {
    text-align: center;
    padding: var(--spacing-5) var(--spacing-3);
    color: var(--ink-secondary);
}

.progreso-vacio__emoji {
    font-size: 2rem;
    display: block;
    margin-bottom: var(--spacing-2);
}

.progreso-ranking-ayuda {
    margin: calc(var(--spacing-2) * -1) 0 var(--spacing-3);
    font-size: 0.8125rem;
    color: var(--ink-muted);
    text-align: center;
}

/* Info / Sobre Edukids */
.info-header {
    text-align: center;
}

.info-header .body-text {
    margin-top: calc(var(--spacing-2) * -1);
    color: var(--ink-secondary);
}

.info-block {
    background: var(--surface-card);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-4);
    box-shadow: var(--shadow-float);
}

.info-block--familia {
    background: var(--surface-elevated);
    border: 2px solid var(--border-hairline);
}

.info-block--creditos {
    text-align: center;
    background: linear-gradient(135deg, var(--surface-elevated) 0%, var(--surface-card) 100%);
    border: 2px solid var(--border-hairline);
}

.info-version {
    margin: var(--spacing-2) 0 0;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-brand);
    letter-spacing: 0.04em;
}

.info-section-title {
    margin: 0 0 var(--spacing-3);
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink-primary);
}

.info-text {
    margin: 0;
    font-size: 0.9375rem;
    line-height: 1.55;
    color: var(--ink-secondary);
}

.info-lista {
    margin: 0;
    padding-left: var(--spacing-5);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    font-size: 0.9375rem;
    line-height: 1.45;
    color: var(--ink-secondary);
}

.info-islas-lista {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.info-isla-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    background: var(--surface-elevated);
    border-radius: var(--rounded-md);
    border-left: 4px solid var(--border-hairline);
}

.info-isla-item--memory { border-left-color: var(--island-memory); }
.info-isla-item--operations { border-left-color: var(--island-operations); }
.info-isla-item--quiz { border-left-color: var(--island-quiz); }
.info-isla-item--words { border-left-color: var(--island-words); }

.info-isla-item__emoji {
    font-size: 1.75rem;
    line-height: 1;
    flex-shrink: 0;
}

.info-isla-item div {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.info-isla-item strong {
    font-size: 0.9375rem;
    color: var(--ink-primary);
}

.info-isla-item span {
    font-size: 0.8125rem;
    color: var(--ink-secondary);
    line-height: 1.4;
}

.ranking-row {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3);
    background: var(--surface-elevated);
    border-radius: var(--rounded-md);
    flex-wrap: wrap;
}

.ranking-row--yo {
    background: var(--success-soft);
    border: 2px solid var(--success);
}

.ranking-medalla {
    font-size: 1.25rem;
    min-width: 1.75rem;
    text-align: center;
}

.ranking-nombre {
    flex: 1 1 8rem;
    min-width: 0;
    font-weight: 600;
    color: var(--ink-primary);
    overflow: hidden;
    text-overflow: ellipsis;
}

.ranking-stats {
    font-size: 0.8125rem;
    color: var(--ink-secondary);
    font-weight: 600;
    flex-shrink: 0;
    margin-left: auto;
}

.ranking-stats .ranking-stars {
    color: var(--warning);
}

/* Legacy progress (kept for compatibility) */
.scores-tabla,
.ranking-tabla {
    background: var(--surface-card);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-4);
    box-shadow: var(--shadow-float);
}

#score-lista,
#ranking-lista {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-3);
    max-height: none;
    overflow-y: visible;
}

#score-lista li,
#ranking-lista li {
    background: var(--surface-elevated);
    padding: var(--spacing-3);
    margin-bottom: var(--spacing-2);
    border-radius: var(--rounded-sm);
    font-size: 0.875rem;
    color: var(--ink-secondary);
}

.ranking-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-2);
    width: 100%;
}

.ranking-info {
    flex: 1;
    text-align: left;
}

.btn-borrar-item {
    background: var(--error-soft);
    color: var(--ink-primary);
    border: none;
    padding: var(--spacing-2);
    border-radius: var(--rounded-sm);
    cursor: pointer;
    font-size: 1rem;
    min-height: var(--tap-min);
    min-width: var(--tap-min);
    flex-shrink: 0;
    margin-left: auto;
}

.acciones-menu {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

/* Legacy quiz (blocked islands keep code) */
.quiz-options label {
    display: block;
    margin: var(--spacing-2) 0;
    padding: var(--spacing-4);
    background: var(--surface-elevated);
    border-radius: var(--rounded-md);
    cursor: pointer;
    border: 2px solid var(--border-hairline);
}

.quiz-options label:hover {
    border-color: var(--accent-brand);
}

.quiz-options input[type="radio"]:checked + span {
    font-weight: 700;
    color: var(--accent-brand);
}

#contenido-desafio .sequence-display {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 8px;
    padding: var(--spacing-4);
    background: var(--surface-elevated);
    color: var(--ink-primary);
    border-radius: var(--rounded-md);
}

#contenido-desafio .ronda-info {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--accent-brand);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes islandStaggerIn {
    from { opacity: 0; transform: translateY(16px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes starPop {
    0% { transform: scale(1); }
    40% { transform: scale(1.25); }
    100% { transform: scale(1); }
}

@keyframes successPulse {
    0% { box-shadow: 0 0 0 0 var(--success-glow); }
    70% { box-shadow: 0 0 0 8px transparent; }
    100% { box-shadow: none; }
}

@keyframes mascotPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.06); }
}

@keyframes lockWiggle {
    0%, 100% { transform: rotate(0); }
    25% { transform: rotate(-12deg); }
    75% { transform: rotate(12deg); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
}

@keyframes confettiFall {
    to {
        transform: translateY(400px) rotate(360deg);
        opacity: 0;
    }
}

/* Responsive */
@media (max-width: 379px) {
    :root {
        --gutter-mobile: 12px;
        --island-gap: 12px;
    }

    .section-card {
        padding: var(--spacing-4);
        border-radius: var(--rounded-lg);
    }

    .island-card {
        min-height: 116px;
    }

    .island-card__land {
        min-height: 104px;
        padding: var(--spacing-3) var(--spacing-2) var(--spacing-4);
    }

    .island-card__mascot {
        font-size: 1.625rem;
    }

    .island-card__title {
        font-size: 0.8125rem;
    }

    .hub-toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    #btn-cerrar-sesion {
        align-self: flex-end;
    }

    .display-title {
        font-size: clamp(1.5rem, 8vw, 2rem);
    }
}

@media (min-width: 480px) {
    .islands-grid {
        gap: var(--island-gap);
    }

    .memory-tiles {
        max-width: 22rem;
    }

    .memory-tile {
        max-width: 6rem;
    }
}

@media (min-width: 768px) {
    .app-header {
        padding-left: max(var(--gutter-tablet), env(safe-area-inset-left));
        padding-right: max(var(--gutter-tablet), env(safe-area-inset-right));
        flex-wrap: nowrap;
    }

    .app-main {
        padding-left: max(var(--gutter-tablet), env(safe-area-inset-left));
        padding-right: max(var(--gutter-tablet), env(safe-area-inset-right));
        padding-top: var(--spacing-5);
    }

    .section-card {
        padding: var(--spacing-6);
    }

    .hub-toolbar {
        flex-direction: row;
        align-items: center;
    }

    .islands-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .island-card {
        min-height: 140px;
    }

    .island-card__land {
        min-height: 124px;
    }

    .memory-tiles {
        max-width: 24rem;
    }

    .memory-tile {
        max-width: 6.5rem;
    }

    .mascot-bubble,
    .op-display,
    .op-options,
    .quiz-question,
    .quiz-cards,
    .words-hint,
    .words-form,
    .phase-bar {
        max-width: 480px;
    }

    .info-islas-lista {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-3);
    }

    .reporte-actions {
        flex-direction: row;
        justify-content: center;
    }

    .reporte-actions .btn-primary,
    .reporte-actions .btn-secondary {
        width: auto;
        min-width: 11rem;
    }

    .section-card .btn-primary,
    .section-card .btn-secondary {
        width: auto;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .memory-tile--show {
        transform: none;
    }

    .mascot-bubble__icon {
        animation: none;
    }

    .island-card:active:not(.island-card--locked),
    .island-card:active:not(.island-card--locked) .island-card__land,
    .btn-primary:active,
    .btn-secondary:active {
        transform: none;
    }
}