/* =========================================================
   Kids Christ — เว็บเรียนรู้พระคัมภีร์สำหรับเด็ก 5–12 ปี
   Design system: พาสเทลสดใส (ฟ้า · ชมพู · ม่วงอ่อน · ขาว)
   ========================================================= */

:root {
  /* สีหลัก */
  --c-sky:        #aee3f5;   /* ฟ้าพาสเทล */
  --c-sky-deep:   #6cc6e8;
  --c-pink:       #ffc9de;   /* ชมพูพาสเทล */
  --c-pink-deep:  #ff9ec2;
  --c-purple:     #d9c8f5;   /* ม่วงอ่อน */
  --c-purple-deep:#b79ce8;
  --c-yellow:     #fff3c4;   /* เหลืองครีม (accent) */
  --c-peach:      #ffd9bf;   /* พีช (accent) */
  --c-mint:       #c8f0dd;   /* เขียวมิ้นต์ (accent) */
  --c-white:      #ffffff;
  --c-cream:      #fffaf3;   /* พื้นหลังนวล */
  --c-ink:        #5b4a6b;   /* ตัวอักษรหลัก (ม่วงเข้มนุ่ม) */
  --c-ink-soft:   #8a7b99;
  --c-brown:      #6b4f3a;   /* น้ำตาลอุ่นแบบสติกเกอร์ */

  --shadow-sm: 0 4px 0 rgba(91, 74, 107, .12);
  --shadow-md: 0 8px 24px rgba(91, 74, 107, .18);
  --shadow-lg: 0 16px 40px rgba(91, 74, 107, .22);

  --radius-sm: 14px;
  --radius:    22px;
  --radius-lg: 34px;

  --font-display: 'Mali', 'Comic Sans MS', 'Baloo 2', system-ui, sans-serif;
  --font-body:    'Mali', 'Sarabun', system-ui, -apple-system, sans-serif;
}

/* ---------- reset ---------- */
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  color: var(--c-ink);
  background: var(--c-cream);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
  background-image:
    radial-gradient(circle at 12% 18%, rgba(174,227,245,.45), transparent 40%),
    radial-gradient(circle at 88% 12%, rgba(255,201,222,.42), transparent 38%),
    radial-gradient(circle at 70% 88%, rgba(217,200,245,.40), transparent 42%);
  background-attachment: fixed;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* ---------- layout helpers ---------- */
.container { width: min(1100px, 92vw); margin-inline: auto; }
.section { padding: clamp(2rem, 5vw, 4rem) 0; }
.center { text-align: center; }
.stack > * + * { margin-top: 1rem; }
.hidden { display: none !important; }

/* ---------- typography ---------- */
h1, h2, h3 { font-family: var(--font-display); line-height: 1.25; color: var(--c-ink); }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 3vw, 1.5rem); }
.subtitle { color: var(--c-ink-soft); font-size: 1.1rem; }
.eyebrow {
  display: inline-block; background: var(--c-yellow); color: var(--c-brown);
  padding: .25rem 1rem; border-radius: 999px; font-weight: 700; font-size: .95rem;
  box-shadow: var(--shadow-sm);
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  background: var(--c-pink-deep); color: #fff; font-weight: 700;
  padding: .8rem 1.6rem; border: none; border-radius: 999px;
  box-shadow: 0 6px 0 rgba(91,74,107,.18); font-size: 1.05rem;
  transition: transform .12s ease, box-shadow .12s ease, filter .12s ease;
}
.btn:hover { transform: translateY(-2px); filter: brightness(1.05); }
.btn:active { transform: translateY(3px); box-shadow: 0 2px 0 rgba(91,74,107,.18); }
.btn--sky    { background: var(--c-sky-deep); }
.btn--purple { background: var(--c-purple-deep); }
.btn--ghost  { background: #fff; color: var(--c-ink); box-shadow: 0 6px 0 rgba(91,74,107,.12); }
.btn--lg     { font-size: 1.2rem; padding: 1rem 2.2rem; }
.btn--block  { display: flex; width: 100%; justify-content: center; }

/* =========================================================
   HEADER / NAV  (สร้างโดย js/layout.js)
   ========================================================= */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.82); backdrop-filter: blur(10px);
  border-bottom: 3px solid var(--c-purple);
}
.nav {
  display: flex; align-items: center; gap: 1rem;
  padding: .7rem 0;
}
.nav__brand {
  display: flex; align-items: center; gap: .55rem;
  font-family: var(--font-display); font-weight: 800; font-size: 1.3rem; color: var(--c-ink);
}
.nav__brand .logo {
  width: 42px; height: 42px; border-radius: 14px;
  background: linear-gradient(135deg, var(--c-sky), var(--c-pink));
  display: grid; place-items: center; font-size: 1.4rem; box-shadow: var(--shadow-sm);
}
.nav__links { display: flex; gap: .35rem; margin-left: auto; flex-wrap: wrap; }
.nav__links a {
  padding: .45rem .85rem; border-radius: 999px; font-weight: 700; font-size: .98rem; color: var(--c-ink-soft);
  transition: background .15s ease, color .15s ease;
}
.nav__links a:hover { background: var(--c-yellow); color: var(--c-brown); }
.nav__links a.active { background: var(--c-purple); color: var(--c-ink); }
.nav__toggle {
  margin-left: auto; display: none; background: var(--c-purple); border: none;
  width: 44px; height: 44px; border-radius: 14px; font-size: 1.4rem; box-shadow: var(--shadow-sm);
}
@media (max-width: 820px) {
  .nav__toggle { display: block; }
  .nav__links {
    position: absolute; left: 0; right: 0; top: 100%;
    background: #fff; flex-direction: column; gap: 0; padding: .5rem;
    box-shadow: var(--shadow-md); border-bottom: 3px solid var(--c-purple);
    max-height: 0; overflow: hidden; transition: max-height .3s ease, padding .3s ease;
  }
  .nav__links.open { max-height: 70vh; padding: .5rem; }
  .nav__links a { padding: .8rem 1rem; }
}

/* =========================================================
   HERO
   ========================================================= */
.hero {
  text-align: center; padding: clamp(2.5rem, 7vw, 5rem) 0 clamp(2rem, 5vw, 3.5rem);
  position: relative;
}
.hero h1 { margin-bottom: .6rem; }
.hero .subtitle { max-width: 36ch; margin-inline: auto; }
.hero__art {
  font-size: clamp(3rem, 11vw, 6rem); margin-bottom: .4rem; line-height: 1;
  filter: drop-shadow(0 8px 0 rgba(91,74,107,.10));
}
.hero__cta { margin-top: 1.6rem; display: flex; gap: .8rem; justify-content: center; flex-wrap: wrap; }

/* floating decorations */
.floaty { position: absolute; font-size: 2.2rem; opacity: .8; animation: bob 4s ease-in-out infinite; pointer-events: none; }
.floaty:nth-child(2) { animation-delay: -1s; }
.floaty:nth-child(3) { animation-delay: -2s; }
.floaty:nth-child(4) { animation-delay: -3s; }
@keyframes bob { 0%,100% { transform: translateY(0) rotate(-4deg);} 50% { transform: translateY(-14px) rotate(4deg);} }

/* =========================================================
   CARD GRID  (เมนูหลัก / การ์ดเกม / การ์ดหนังสือ)
   ========================================================= */
.card-grid {
  display: grid; gap: 1.4rem;
  grid-template-columns: repeat(3, 1fr);   /* แถวละ 3 ใบ ให้สมดุล */
}
@media (max-width: 780px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .card-grid { grid-template-columns: 1fr; } }
.card {
  background: #fff; border-radius: var(--radius-lg); padding: 1.6rem;
  box-shadow: var(--shadow-md); position: relative; overflow: hidden;
  border: 3px solid transparent; transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
  display: flex; flex-direction: column; gap: .5rem;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.card__icon {
  width: 64px; height: 64px; border-radius: 20px; display: grid; place-items: center;
  font-size: 2rem; margin-bottom: .4rem; box-shadow: var(--shadow-sm);
}
.card h3 { margin-bottom: .15rem; }
.card p { color: var(--c-ink-soft); font-size: .98rem; flex: 1; }
.card .btn { margin-top: .8rem; align-self: flex-start; }
.card--sky    { border-color: var(--c-sky); }
.card--sky    .card__icon { background: var(--c-sky); }
.card--pink   { border-color: var(--c-pink); }
.card--pink   .card__icon { background: var(--c-pink); }
.card--purple { border-color: var(--c-purple); }
.card--purple .card__icon { background: var(--c-purple); }
.card--yellow { border-color: var(--c-yellow); }
.card--yellow .card__icon { background: var(--c-yellow); }
.card--mint   { border-color: var(--c-mint); }
.card--mint   .card__icon { background: var(--c-mint); }
.card--peach  { border-color: var(--c-peach); }
.card--peach  .card__icon { background: var(--c-peach); }
.card--link { cursor: pointer; }
.card__badge {
  position: absolute; top: 14px; right: -34px; transform: rotate(35deg);
  background: var(--c-pink-deep); color: #fff; font-size: .75rem; font-weight: 700;
  padding: .2rem 2.4rem;
}

/* =========================================================
   PANEL / SECTION HEADING
   ========================================================= */
.panel {
  background: #fff; border-radius: var(--radius-lg); padding: clamp(1.4rem, 4vw, 2.4rem);
  box-shadow: var(--shadow-md); border: 3px solid var(--c-purple);
}
.section-head { text-align: center; margin-bottom: 1.8rem; }
.section-head h2 { display: inline-flex; align-items: center; gap: .5rem; }
.section-head p { color: var(--c-ink-soft); }
.divider-wave {
  height: 24px; background: var(--c-purple);
  -webkit-mask: radial-gradient(14px at 50% 0, transparent 98%, #000) repeat-x; mask: radial-gradient(14px at 50% 0, transparent 98%, #000) repeat-x;
  -webkit-mask-size: 28px 24px; mask-size: 28px 24px; opacity: .4; margin: 1rem 0;
}

/* =========================================================
   SONGS
   ========================================================= */
.song-filters { display: flex; gap: .5rem; flex-wrap: wrap; justify-content: center; margin-bottom: 1.6rem; }
.chip {
  background: #fff; border: 3px solid var(--c-purple); color: var(--c-ink);
  padding: .4rem 1.1rem; border-radius: 999px; font-weight: 700; font-size: .95rem;
  box-shadow: var(--shadow-sm); transition: background .15s ease;
}
.chip.active, .chip:hover { background: var(--c-purple); }
.song-grid { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.song {
  background: #fff; border-radius: var(--radius); padding: 1rem 1.1rem; box-shadow: var(--shadow-sm);
  display: flex; gap: .9rem; align-items: center; border-left: 8px solid var(--c-sky);
  transition: transform .12s ease;
}
.song:hover { transform: translateX(4px); }
.song[data-lang="th"]  { border-left-color: var(--c-pink); }
.song[data-lang="en"]  { border-left-color: var(--c-sky); }
.song__play {
  flex: none; width: 46px; height: 46px; border-radius: 50%; border: none;
  background: var(--c-pink-deep); color: #fff; font-size: 1.1rem; box-shadow: var(--shadow-sm);
}
.song__play--en { background: var(--c-sky-deep); }
.song__meta { min-width: 0; }
.song__title { font-weight: 700; }
.song__sub { font-size: .85rem; color: var(--c-ink-soft); }
.song__tag { font-size: .7rem; background: var(--c-yellow); color: var(--c-brown); padding: .05rem .5rem; border-radius: 999px; font-weight: 700; }

/* =========================================================
   GAMES — ทั่วไป
   ========================================================= */
.game-shell { background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); border: 3px solid var(--c-purple); padding: clamp(1rem, 3vw, 1.8rem); }
.game-hud {
  display: flex; gap: 1rem; flex-wrap: wrap; align-items: center; justify-content: space-between; margin-bottom: 1rem;
}
.hud-pill {
  background: var(--c-yellow); color: var(--c-brown); font-weight: 700; padding: .35rem 1rem; border-radius: 999px; box-shadow: var(--shadow-sm);
  display: inline-flex; gap: .4rem; align-items: center;
}
.hud-pill--sky { background: var(--c-sky); }
.hud-pill--pink { background: var(--c-pink); }
.canvas-wrap { display: flex; justify-content: center; }
canvas { max-width: 100%; height: auto; border-radius: var(--radius); background: linear-gradient(180deg,#d4f1ff,#eaffe7); box-shadow: inset 0 0 0 3px rgba(91,74,107,.08); touch-action: none; }

.overlay {
  position: absolute; inset: 0; background: rgba(91,74,107,.55); backdrop-filter: blur(3px);
  display: grid; place-items: center; border-radius: var(--radius-lg); padding: 1rem; text-align: center;
}
.overlay__card { background: #fff; border-radius: var(--radius-lg); padding: 2rem; max-width: 420px; box-shadow: var(--shadow-lg); }
.relative { position: relative; }

/* QUIZ */
.quiz-card { max-width: 640px; margin-inline: auto; }
.quiz-progress { height: 14px; background: var(--c-purple); border-radius: 999px; overflow: hidden; margin-bottom: 1.2rem; }
.quiz-progress > span { display:block; height:100%; background: var(--c-pink-deep); width: 0; transition: width .3s ease; }
.quiz-q { font-size: 1.3rem; font-weight: 700; margin-bottom: 1.2rem; text-align: center; }
.quiz-options { display: grid; gap: .7rem; }
.quiz-opt {
  background: #fff; border: 3px solid var(--c-purple); border-radius: var(--radius); padding: .9rem 1.2rem;
  font-size: 1.05rem; font-weight: 700; text-align: left; color: var(--c-ink); box-shadow: var(--shadow-sm);
  transition: transform .1s ease, background .15s ease;
}
.quiz-opt:hover:not(:disabled) { transform: translateY(-2px); background: var(--c-yellow); }
.quiz-opt.correct { background: var(--c-mint); border-color: #6fcf97; }
.quiz-opt.wrong   { background: var(--c-pink); border-color: var(--c-pink-deep); }
.quiz-opt:disabled { cursor: default; }
.quiz-hint { margin-top: 1rem; text-align: center; }
.quiz-hint .bubble { display:inline-block; background: var(--c-sky); border-radius: var(--radius); padding: .6rem 1.1rem; box-shadow: var(--shadow-sm); }

/* ARK PUZZLE */
.ark-area { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem; }
@media (max-width: 720px){ .ark-area { grid-template-columns: 1fr; } }
.ark-board {
  background: #eaf6ff; border-radius: var(--radius); border: 3px dashed var(--c-sky-deep); position: relative;
  aspect-ratio: 4 / 3; overflow: hidden;
}
.ark-tray { background: var(--c-cream); border-radius: var(--radius); padding: 1rem; display: flex; flex-wrap: wrap; gap: .8rem; align-content: flex-start; border: 3px solid var(--c-purple); }
.ark-piece, .ark-slot { position: absolute; }
.ark-piece {
  font-size: 2.2rem; cursor: grab; user-select: none; line-height: 1; transition: transform .08s ease; filter: drop-shadow(0 4px 0 rgba(91,74,107,.15));
}
.ark-piece.dragging { cursor: grabbing; transform: scale(1.15); z-index: 5; }
.ark-piece.placed { cursor: default; }
.ark-slot { border: 3px dashed rgba(91,74,107,.25); border-radius: 16px; display: grid; place-items: center; font-size: 1.5rem; color: rgba(91,74,107,.3); }
.ark-slot.filled { border-color: transparent; }
.tray-piece { font-size: 2.4rem; cursor: grab; user-select: none; filter: drop-shadow(0 4px 0 rgba(91,74,107,.15)); }
.tray-piece.dragging { cursor: grabbing; }

/* =========================================================
   BOOKS / STORY READER
   ========================================================= */
.book-grid { display: grid; gap: 1.4rem; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.book-cover {
  border-radius: var(--radius-lg); padding: 1.4rem; box-shadow: var(--shadow-md); border: 3px solid #fff;
  min-height: 230px; display: flex; flex-direction: column; justify-content: space-between; cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease;
}
.book-cover:hover { transform: translateY(-6px) rotate(-1deg); box-shadow: var(--shadow-lg); }
.book-cover .emoji { font-size: 3rem; }
.book-cover h3 { color: var(--c-brown); }
.book-cover .ref { font-size: .85rem; color: var(--c-brown); opacity: .8; }

/* reader modal */
.reader {
  position: fixed; inset: 0; z-index: 100; background: rgba(91,74,107,.6); backdrop-filter: blur(5px);
  display: grid; place-items: center; padding: 1rem;
}
.reader__win {
  background: var(--c-cream); border-radius: var(--radius-lg); width: min(760px, 96vw); max-height: 92vh;
  display: flex; flex-direction: column; box-shadow: var(--shadow-lg); overflow: hidden; border: 4px solid #fff;
}
.reader__bar { display: flex; align-items: center; gap: .6rem; padding: .8rem 1.2rem; background: #fff; border-bottom: 3px solid var(--c-purple); }
.reader__bar .title { font-family: var(--font-display); font-weight: 800; }
.reader__close { margin-left: auto; background: var(--c-pink); border: none; width: 40px; height: 40px; border-radius: 12px; font-size: 1.2rem; }
.reader__page { padding: clamp(1.4rem, 4vw, 2.6rem); overflow-y: auto; text-align: center; }
.reader__illus {
  font-size: clamp(4rem, 14vw, 7rem); margin-bottom: .6rem; min-height: 1.2em;
}
.reader__art-note {
  background: #fff; border: 2px dashed var(--c-purple); border-radius: var(--radius); padding: .8rem 1rem;
  font-size: .82rem; color: var(--c-ink-soft); text-align: left; margin: 1rem auto 0; max-width: 60ch;
}
.reader__art-note code { background: var(--c-yellow); padding: 0 .2rem; border-radius: 4px; color: var(--c-brown); }
.reader__text { font-size: 1.25rem; max-width: 32ch; margin-inline: auto; }
.reader__verse { margin-top: 1.2rem; font-style: italic; color: var(--c-purple-deep); font-weight: 700; }
.reader__nav { display: flex; align-items: center; justify-content: space-between; padding: .8rem 1.2rem; background: #fff; border-top: 3px solid var(--c-purple); }
.reader__dots { display: flex; gap: .35rem; }
.reader__dots i { width: 10px; height: 10px; border-radius: 50%; background: var(--c-purple); display: inline-block; opacity: .4; }
.reader__dots i.on { opacity: 1; background: var(--c-pink-deep); }

/* =========================================================
   COLORING
   ========================================================= */
.color-grid { display: grid; gap: 1.4rem; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.color-card { background: #fff; border-radius: var(--radius-lg); padding: 1rem; box-shadow: var(--shadow-md); border: 3px solid var(--c-purple); text-align: center; }
.color-card .frame { background: #fff; border: 2px solid #eee; border-radius: var(--radius); padding: .6rem; }
.color-card .frame svg { width: 100%; height: auto; }
.color-card h3 { margin: .7rem 0 .2rem; }
.color-card .btn { margin-top: .5rem; }

/* =========================================================
   VERSES
   ========================================================= */
.verse-grid { display: grid; gap: 1.2rem; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.verse-card {
  border-radius: var(--radius-lg); padding: 1.6rem; box-shadow: var(--shadow-md); border: 3px solid #fff;
  position: relative; overflow: hidden;
}
.verse-card .quote-mark { position: absolute; top: -10px; left: 10px; font-size: 5rem; opacity: .18; font-family: Georgia, serif; }
.verse-card p.text { font-size: 1.2rem; font-weight: 700; color: var(--c-brown); position: relative; }
.verse-card p.ref { margin-top: .8rem; font-weight: 800; color: var(--c-brown); opacity: .85; }
.verse-card .actions { margin-top: 1rem; display: flex; gap: .5rem; }
.mini-btn { background: rgba(255,255,255,.7); border: none; padding: .35rem .8rem; border-radius: 999px; font-weight: 700; font-size: .85rem; box-shadow: var(--shadow-sm); }
.flip { perspective: 1000px; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  margin-top: 3rem; background: #fff; border-top: 3px solid var(--c-purple);
  padding: 2rem 0; text-align: center; color: var(--c-ink-soft);
}
.site-footer .verse-of-day { font-style: italic; color: var(--c-purple-deep); font-weight: 700; max-width: 50ch; margin: .6rem auto 1rem; }
.site-footer .mini-nav { display: flex; gap: .8rem; justify-content: center; flex-wrap: wrap; margin-bottom: .8rem; }
.site-footer .mini-nav a:hover { color: var(--c-pink-deep); }

/* =========================================================
   misc
   ========================================================= */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%) translateY(120%);
  background: var(--c-ink); color: #fff; padding: .7rem 1.4rem; border-radius: 999px; font-weight: 700;
  box-shadow: var(--shadow-lg); transition: transform .3s ease; z-index: 200;
}
.toast.show { transform: translateX(-50%) translateY(0); }

.confetti { position: fixed; top: -10px; width: 10px; height: 14px; border-radius: 3px; z-index: 150; pointer-events: none; }

.note-box { background: var(--c-yellow); border-radius: var(--radius); padding: 1rem 1.2rem; color: var(--c-brown); box-shadow: var(--shadow-sm); }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}