/* =============================================================
   Kids Vegetable Game — kids-vegetable-game.css
   ============================================================= */

/* ── Variables ──────────────────────────────────────────────── */
:root {
    --kvg-green:    #2D7D46;
    --kvg-green-d:  #1a5c30;
    --kvg-green-l:  #e8f5e9;
    --kvg-yellow:   #FFD23F;
    --kvg-orange:   #FF8C42;
    --kvg-red:      #FF3B5C;
    --kvg-sky:      #e8f5e9;
    --kvg-white:    #ffffff;
    --kvg-g50:      #f9fafb;
    --kvg-g100:     #f3f4f6;
    --kvg-g200:     #e5e7eb;
    --kvg-g400:     #9ca3af;
    --kvg-g500:     #6b7280;
    --kvg-g700:     #374151;
    --kvg-g800:     #1f2937;
    --kvg-shadow:   0 2px 12px rgba(0,0,0,.10);
    --kvg-shadow-lg:0 6px 24px rgba(0,0,0,.14);
    --kvg-radius:   16px;
    --kvg-font:     'Nunito', 'Segoe UI', system-ui, sans-serif;
}

/* ── Reset / Base ───────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--kvg-font);
    background: var(--kvg-g50);
    color: var(--kvg-g800);
    min-height: 100vh;
}

/* ── PAGE HEADER ─────────────────────────────────────────────── */
.kvg-header {
    background: linear-gradient(135deg, var(--kvg-green) 0%, #3a9957 100%);
    color: #fff;
    text-align: center;
    padding: 1.5rem 1rem 1.25rem;
}

.kvg-header-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: .82rem;
    font-weight: 700;
    color: rgba(255,255,255,.85);
    text-decoration: none;
    background: rgba(0,0,0,.18);
    border-radius: 20px;
    padding: .3rem .85rem;
    margin-bottom: .75rem;
    transition: background .15s;
}
.kvg-header-back:hover { background: rgba(0,0,0,.30); color: #fff; }

.kvg-header h1 {
    font-size: clamp(1.4rem, 4vw, 2rem);
    font-weight: 900;
    letter-spacing: -.01em;
    margin-bottom: .25rem;
}

.kvg-header-sub {
    font-size: .9rem;
    opacity: .88;
}

/* ── BREADCRUMB ──────────────────────────────────────────────── */
.kvg-breadcrumb {
    font-size: .78rem;
    color: var(--kvg-g500);
    padding: .6rem 1.25rem;
    border-bottom: 1px solid var(--kvg-g200);
    background: var(--kvg-white);
}
.kvg-breadcrumb a { color: var(--kvg-green); text-decoration: none; font-weight: 600; }
.kvg-breadcrumb a:hover { text-decoration: underline; }

/* ── MAIN LAYOUT ─────────────────────────────────────────────── */
.kvg-main {
    max-width: 960px;
    margin: 0 auto;
    padding: 1.5rem 1rem 3rem;
}

/* ── SCORE / CONTROLS BAR ────────────────────────────────────── */
.kvg-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: .6rem;
    margin-bottom: 1rem;
}

.kvg-score {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--kvg-white);
    border: 2px solid var(--kvg-green);
    border-radius: 30px;
    padding: .35rem 1rem;
    font-size: .95rem;
    font-weight: 800;
    color: var(--kvg-green);
}

.kvg-score-num {
    font-size: 1.2rem;
    color: var(--kvg-orange);
}

.kvg-sound-btn {
    background: var(--kvg-white);
    border: 2px solid var(--kvg-g200);
    border-radius: 30px;
    padding: .35rem 1rem;
    font-size: .82rem;
    font-weight: 700;
    cursor: pointer;
    transition: border-color .15s, background .15s, color .15s;
    color: var(--kvg-g700);
    white-space: nowrap;
}
.kvg-sound-btn:hover { border-color: var(--kvg-green); }
.kvg-sound-btn[aria-pressed="true"] { border-color: var(--kvg-green); color: var(--kvg-green); }

/* Fullscreen btn accent */
.kvg-fs-btn:hover { background: var(--kvg-green); color: #fff; border-color: var(--kvg-green); }

/* Fullscreen mode — expand game area */
#kvg-root:fullscreen,
#kvg-root:-webkit-full-screen {
    background: var(--kvg-g50);
    padding: 1rem;
    overflow-y: auto;
}
#kvg-root:fullscreen .kvg-sky,
#kvg-root:-webkit-full-screen .kvg-sky {
    min-height: calc(100vh - 180px);
}

/* ── MODE TABS ───────────────────────────────────────────────── */
.kvg-mode-tabs {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.kvg-mode-btn {
    flex: 1;
    min-width: 100px;
    padding: .55rem .5rem;
    font-size: .83rem;
    font-weight: 800;
    border: 2px solid var(--kvg-g200);
    border-radius: 12px;
    background: var(--kvg-white);
    color: var(--kvg-g700);
    cursor: pointer;
    transition: all .15s;
    text-align: center;
}
.kvg-mode-btn:hover {
    border-color: var(--kvg-green);
    color: var(--kvg-green);
    transform: translateY(-1px);
}
.kvg-mode-btn.active {
    background: var(--kvg-green);
    border-color: var(--kvg-green);
    color: #fff;
    box-shadow: 0 3px 10px rgba(45,125,70,.35);
}

/* ── GAME SKY (arena) ────────────────────────────────────────── */
.kvg-sky {
    position: relative;
    background: linear-gradient(180deg, #d4efdd 0%, #f0faf3 100%);
    border-radius: var(--kvg-radius);
    border: 2px solid var(--kvg-g200);
    min-height: 340px;
    overflow: hidden;
    box-shadow: var(--kvg-shadow);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Decorative clouds */
.kvg-cloud {
    position: absolute;
    background: rgba(255,255,255,.55);
    border-radius: 50px;
    pointer-events: none;
}
.kvg-cloud::before, .kvg-cloud::after {
    content: '';
    position: absolute;
    background: rgba(255,255,255,.55);
    border-radius: 50%;
}

/* ── LEARN CARD ──────────────────────────────────────────────── */
.kvg-learn-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .85rem;
    padding: 1.5rem;
    animation: kvg-pop-in .3s ease;
}

@keyframes kvg-pop-in {
    from { opacity: 0; transform: scale(.85); }
    to   { opacity: 1; transform: scale(1); }
}

.kvg-veg-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--kvg-white);
    border: 4px solid var(--kvg-green);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    box-shadow: var(--kvg-shadow-lg);
    cursor: pointer;
    transition: transform .15s;
    user-select: none;
}
.kvg-veg-circle:hover { transform: scale(1.06); }
.kvg-veg-circle:active { transform: scale(.96); }

.kvg-veg-name {
    font-size: 1.6rem;
    font-weight: 900;
    color: var(--kvg-green-d);
    letter-spacing: .02em;
}

.kvg-veg-category {
    font-size: .82rem;
    font-weight: 700;
    color: var(--kvg-g500);
    background: var(--kvg-green-l);
    border-radius: 20px;
    padding: .2rem .75rem;
    text-transform: uppercase;
    letter-spacing: .04em;
}

.kvg-veg-fact {
    font-size: .88rem;
    color: var(--kvg-g700);
    text-align: center;
    max-width: 320px;
    line-height: 1.55;
    background: rgba(255,255,255,.7);
    border-radius: 10px;
    padding: .5rem .85rem;
}

.kvg-learn-actions {
    display: flex;
    gap: .6rem;
    flex-wrap: wrap;
    justify-content: center;
}

.kvg-big-btn {
    padding: .55rem 1.1rem;
    font-size: .9rem;
    font-weight: 800;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: transform .12s, box-shadow .12s;
}
.kvg-big-btn:hover { transform: translateY(-2px); box-shadow: 0 4px 14px rgba(0,0,0,.18); }
.kvg-big-btn:active { transform: scale(.96); }

.kvg-big-btn-hear {
    background: var(--kvg-yellow);
    color: #1a1a1a;
}
.kvg-big-btn-pop {
    background: var(--kvg-green);
    color: #fff;
}

/* Nav dots */
.kvg-veg-nav {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: .4rem;
}

.kvg-nav-btn {
    background: rgba(255,255,255,.7);
    border: 2px solid var(--kvg-g200);
    border-radius: 50%;
    width: 32px;
    height: 32px;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background .15s;
    font-weight: 900;
    color: var(--kvg-green-d);
}
.kvg-nav-btn:hover { background: rgba(255,255,255,.95); }

.kvg-veg-dots {
    display: flex;
    gap: 5px;
    align-items: center;
    flex-wrap: wrap;
    max-width: 220px;
    justify-content: center;
}

.kvg-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--kvg-g200);
    cursor: pointer;
    transition: transform .12s, background .12s;
}
.kvg-dot.active {
    background: var(--kvg-green);
    transform: scale(1.35);
}

/* ── BALLOONS (pop mode) ─────────────────────────────────────── */
.kvg-balloon {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    cursor: pointer;
    animation: kvg-float 3s ease-in-out infinite;
    user-select: none;
    transition: transform .1s;
}
.kvg-balloon:hover { transform: scale(1.1); }
.kvg-balloon:active { transform: scale(.9); }

.kvg-balloon-body {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: var(--kvg-white);
    border: 3px solid var(--kvg-green);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.2rem;
    box-shadow: 0 4px 16px rgba(0,0,0,.15);
    position: relative;
}
.kvg-balloon-body::after {
    content: '';
    position: absolute;
    bottom: -16px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 18px;
    background: #aaa;
}

.kvg-balloon-label {
    font-size: .68rem;
    font-weight: 800;
    color: var(--kvg-green-d);
    margin-top: 20px;
    text-align: center;
    background: rgba(255,255,255,.85);
    border-radius: 6px;
    padding: 1px 5px;
}

@keyframes kvg-float {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-18px); }
}

.kvg-balloon.popped {
    pointer-events: none;
    animation: kvg-pop-burst .35s forwards;
}

@keyframes kvg-pop-burst {
    0%   { transform: scale(1); opacity: 1; }
    50%  { transform: scale(1.6); opacity: .7; }
    100% { transform: scale(0);   opacity: 0; }
}

/* ── FIND MODE ───────────────────────────────────────────────── */
.kvg-find-prompt {
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--kvg-green-d);
    text-align: center;
    padding: .75rem 1.25rem;
    background: rgba(255,255,255,.85);
    border-radius: 12px;
    margin-bottom: 1rem;
    width: 100%;
    max-width: 360px;
    animation: kvg-pop-in .25s ease;
}

.kvg-find-choices {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
    gap: .6rem;
    width: 100%;
    max-width: 400px;
    padding: 0 1rem;
}

.kvg-find-choice {
    aspect-ratio: 1;
    background: var(--kvg-white);
    border: 3px solid var(--kvg-g200);
    border-radius: 14px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    font-size: 2.2rem;
    cursor: pointer;
    transition: border-color .12s, transform .12s;
    user-select: none;
}
.kvg-find-choice:hover { border-color: var(--kvg-green); transform: scale(1.05); }
.kvg-find-choice span.label { font-size: .65rem; font-weight: 800; color: var(--kvg-g500); }
.kvg-find-choice.correct { border-color: var(--kvg-green); background: var(--kvg-green-l); }
.kvg-find-choice.wrong { border-color: var(--kvg-red); background: #fff0f2; }

/* ── QUIZ CARD ───────────────────────────────────────────────── */
.kvg-quiz-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .85rem;
    padding: 1.25rem 1rem;
    width: 100%;
    max-width: 400px;
    animation: kvg-pop-in .25s ease;
}

.kvg-quiz-progress {
    font-size: .8rem;
    font-weight: 700;
    color: var(--kvg-g500);
    width: 100%;
    text-align: right;
}

.kvg-quiz-emoji {
    font-size: 4rem;
    background: var(--kvg-white);
    border-radius: 50%;
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--kvg-shadow);
    border: 3px solid var(--kvg-green);
}

.kvg-quiz-question {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--kvg-g800);
    text-align: center;
}

.kvg-quiz-choices {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: .55rem;
    width: 100%;
}

.kvg-quiz-choice {
    padding: .6rem .5rem;
    font-size: .9rem;
    font-weight: 800;
    border: 2px solid var(--kvg-g200);
    border-radius: 12px;
    background: var(--kvg-white);
    cursor: pointer;
    text-align: center;
    transition: border-color .12s, background .12s, transform .1s;
    color: var(--kvg-g800);
}
.kvg-quiz-choice:hover:not(:disabled) { border-color: var(--kvg-green); transform: scale(1.02); }
.kvg-quiz-choice.correct { border-color: var(--kvg-green); background: var(--kvg-green-l); color: var(--kvg-green-d); }
.kvg-quiz-choice.wrong { border-color: var(--kvg-red); background: #fff0f2; color: var(--kvg-red); }
.kvg-quiz-choice:disabled { cursor: default; }

/* ── OVERLAY (round end / quiz results) ──────────────────────── */
.kvg-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,.92);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    border-radius: var(--kvg-radius);
    animation: kvg-fade-in .25s ease;
    z-index: 10;
}

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

.kvg-overlay-emoji { font-size: 3.5rem; }
.kvg-overlay-title {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--kvg-green-d);
    text-align: center;
}
.kvg-overlay-sub {
    font-size: .95rem;
    color: var(--kvg-g500);
    text-align: center;
    max-width: 280px;
}
.kvg-overlay-btn {
    padding: .65rem 1.5rem;
    background: var(--kvg-green);
    color: #fff;
    font-size: 1rem;
    font-weight: 800;
    border: none;
    border-radius: 14px;
    cursor: pointer;
    transition: background .15s, transform .12s;
}
.kvg-overlay-btn:hover { background: var(--kvg-green-d); transform: translateY(-2px); }

/* ── FEEDBACK TOAST ──────────────────────────────────────────── */
.kvg-feedback {
    position: absolute;
    top: 1rem;
    left: 50%;
    transform: translateX(-50%);
    padding: .45rem 1.2rem;
    border-radius: 20px;
    font-size: .92rem;
    font-weight: 800;
    pointer-events: none;
    animation: kvg-toast .9s forwards;
    white-space: nowrap;
    z-index: 20;
}
.kvg-feedback.good { background: var(--kvg-green); color: #fff; }
.kvg-feedback.bad  { background: var(--kvg-red); color: #fff; }

@keyframes kvg-toast {
    0%   { opacity: 0; transform: translateX(-50%) translateY(-8px); }
    15%  { opacity: 1; transform: translateX(-50%) translateY(0); }
    70%  { opacity: 1; }
    100% { opacity: 0; transform: translateX(-50%) translateY(-6px); }
}

/* ── EDUCATIONAL CONTENT ─────────────────────────────────────── */
.kvg-section {
    margin-top: 2.5rem;
}

.kvg-section-title {
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--kvg-g800);
    margin-bottom: 1rem;
    padding-bottom: .5rem;
    border-bottom: 3px solid var(--kvg-green-l);
}

.kvg-steps {
    display: flex;
    flex-direction: column;
    gap: .85rem;
}

.kvg-step {
    display: flex;
    gap: .85rem;
    align-items: flex-start;
    background: var(--kvg-white);
    border: 1px solid var(--kvg-g200);
    border-radius: 14px;
    padding: 1rem 1.1rem;
    box-shadow: 0 1px 6px rgba(0,0,0,.06);
}

.kvg-step-num {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--kvg-green);
    color: #fff;
    font-size: .95rem;
    font-weight: 900;
    display: flex;
    align-items: center;
    justify-content: center;
}

.kvg-step-body h3 {
    font-size: .95rem;
    font-weight: 800;
    margin-bottom: .25rem;
    color: var(--kvg-g800);
}

.kvg-step-body p {
    font-size: .85rem;
    color: var(--kvg-g500);
    line-height: 1.6;
}

/* ── FAQ ─────────────────────────────────────────────────────── */
.kvg-faq-list {
    display: flex;
    flex-direction: column;
    gap: .6rem;
}

.kvg-faq-item {
    background: var(--kvg-white);
    border: 1px solid var(--kvg-g200);
    border-radius: 12px;
    overflow: hidden;
}

.kvg-faq-q {
    width: 100%;
    text-align: left;
    padding: .85rem 1.1rem;
    font-size: .92rem;
    font-weight: 800;
    background: transparent;
    border: none;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--kvg-g800);
    gap: .5rem;
}
.kvg-faq-q::after {
    content: '﹢';
    font-size: 1.2rem;
    color: var(--kvg-green);
    flex-shrink: 0;
}
.kvg-faq-item.open .kvg-faq-q::after { content: '﹣'; }

.kvg-faq-a {
    max-height: 0;
    overflow: hidden;
    font-size: .86rem;
    color: var(--kvg-g700);
    line-height: 1.65;
    transition: max-height .28s ease, padding .28s ease;
    padding: 0 1.1rem;
}
.kvg-faq-item.open .kvg-faq-a { max-height: 400px; padding: .6rem 1.1rem 1rem; }

/* ── FOOTER ──────────────────────────────────────────────────── */
.kvg-footer {
    background: #1a3a24;
    color: rgba(255,255,255,.75);
    text-align: center;
    padding: 2rem 1.5rem;
    font-size: .85rem;
    line-height: 1.7;
    margin-top: 2rem;
}
.kvg-footer a {
    color: rgba(255,255,255,.85);
    text-decoration: none;
    font-weight: 600;
    transition: color .15s;
}
.kvg-footer a:hover { color: #fff; text-decoration: underline; }

/* ── RESPONSIVE ──────────────────────────────────────────────── */
@media (max-width: 600px) {
    .kvg-mode-tabs { gap: .35rem; }
    .kvg-mode-btn  { font-size: .75rem; padding: .45rem .35rem; min-width: 70px; }
    .kvg-sky { min-height: 300px; }
    .kvg-veg-circle { width: 96px; height: 96px; font-size: 2.8rem; }
    .kvg-veg-name { font-size: 1.3rem; }
    .kvg-quiz-choices { grid-template-columns: 1fr 1fr; }
    .kvg-find-choices { grid-template-columns: repeat(3, 1fr); }
}