/* ==========================================================================
   Phonics for My Love 💕 — styles
   Romantic, cute, pink/red. Light + dark. Mobile-first. No build step.
   ========================================================================== */

/* ---- Design tokens ---- */
:root {
  color-scheme: light dark;

  --pink-50: #fff5f7;
  --pink-100: #ffe4ea;
  --pink-200: #ffc9d6;
  --pink-300: #ffa3ba;
  --pink-400: #ff6f93;
  --pink-500: #ff4d6d;
  --pink-600: #ef2d56;
  --red: #e63946;
  --rose-600: #b02050;
  --rose-700: #a4133c;
  --rose-800: #800f2f;
  --rose-900: #590d22;
  --muted: #a05a6f;

  --bg: #fff0f3;
  --glow-1: #ffe0e8;
  --glow-2: #ffc9d6;
  --header-bg: rgba(255, 245, 247, 0.82);
  --card: #ffffff;
  --card-border: #ffe0e8;
  --text: #590d22;
  --text-soft: #800f2f;

  --font-body: "Nunito", ui-rounded, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --font-display: "Dancing Script", "Segoe Script", "Brush Script MT", cursive;

  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --shadow-sm: 0 4px 16px -8px rgba(255, 77, 109, 0.4);
  --shadow-md: 0 16px 34px -18px rgba(255, 77, 109, 0.5);
  --shadow-lg: 0 28px 60px -24px rgba(255, 77, 109, 0.6);
  --ring: 0 0 0 3px rgba(255, 77, 109, 0.28);
  --ease: cubic-bezier(0.22, 0.8, 0.36, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #2a0f1b;
    --glow-1: #4a1d2e;
    --glow-2: #552436;
    --header-bg: rgba(42, 15, 27, 0.82);
    --card: #3a1523;
    --card-border: #4a1d2e;
    --text: #ffd9e6;
    --text-soft: #ffc2d5;
    --muted: #d79bb0;
    --pink-50: #3f1a28;
    --pink-100: #4a1d2e;
    --pink-200: #552436;
    --shadow-sm: 0 4px 16px -8px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 16px 34px -18px rgba(0, 0, 0, 0.6);
    --shadow-lg: 0 28px 60px -24px rgba(0, 0, 0, 0.7);
  }
}

/* ---- Reset / base ---- */
* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  line-height: 1.6;
  background:
    radial-gradient(1100px 560px at 100% -8%, var(--glow-1), transparent 60%),
    radial-gradient(900px 520px at -10% 18%, var(--glow-2), transparent 55%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, iframe { max-width: 100%; display: block; }
button { font-family: inherit; }
h1, h2, h3 { line-height: 1.15; }

::selection { background: var(--pink-300); color: var(--rose-900); }

:focus-visible { outline: 3px solid var(--pink-400); outline-offset: 2px; border-radius: 6px; }

.container {
  width: 100%;
  max-width: 1120px;
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 2rem);
}

/* ---- Skip link ---- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--rose-800);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: 0 0 var(--radius-md) 0;
  text-decoration: none;
  font-weight: 700;
}
.skip-link:focus { left: 0; }

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--header-bg);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--card-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-block: 0.7rem;
  flex-wrap: wrap;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--rose-800);
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3.5vw, 1.6rem);
  font-weight: 700;
  line-height: 1.05;
  white-space: nowrap;
}

.brand-heart {
  font-size: 1.5rem;
  animation: beat 1.9s var(--ease) infinite;
}

.nav {
  display: flex;
  gap: 0.35rem;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.nav::-webkit-scrollbar { display: none; }

.nav-link {
  color: var(--text-soft);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  white-space: nowrap;
  border: 1px solid transparent;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.nav-link:hover { background: var(--pink-100); color: var(--rose-800); }

@keyframes beat {
  0%, 100% { transform: scale(1); }
  25% { transform: scale(1.18); }
  40% { transform: scale(1); }
  55% { transform: scale(1.12); }
}

/* ---- Hero ---- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(3.2rem, 8vw, 6rem);
  text-align: center;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 820px;
  margin-inline: auto;
}

.hero-kicker {
  margin: 0 0 0.75rem;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pink-600);
}

.hero-title {
  margin: 0 0 1rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.3rem, 6vw, 4rem);
  color: var(--rose-900);
}

.hero-sub {
  margin: 0 auto 1.75rem;
  max-width: 60ch;
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  color: var(--rose-800);
}

.cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.9rem 1.9rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--pink-400), var(--pink-500));
  color: #fff;
  font-weight: 800;
  font-size: 1.1rem;
  text-decoration: none;
  box-shadow: 0 14px 30px -12px rgba(255, 77, 109, 0.7);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), filter 0.2s var(--ease);
}
.cta:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 20px 40px -14px rgba(255, 77, 109, 0.8);
  filter: brightness(1.04);
}

/* Entrance for hero + group heads */
.hero-kicker, .hero-title, .hero-sub, .cta { animation: riseIn 0.6s var(--ease) both; }
.hero-title { animation-delay: 0.08s; }
.hero-sub { animation-delay: 0.16s; }
.cta { animation-delay: 0.24s; }

@keyframes riseIn {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}

/* Floating hearts */
.hero-hearts {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.heart {
  position: absolute;
  bottom: -12%;
  left: var(--left);
  font-size: var(--size);
  opacity: 0;
  animation: floatUp var(--dur) linear var(--delay) infinite;
  will-change: transform, opacity;
}

@keyframes floatUp {
  0% { transform: translate3d(0, 0, 0) rotate(0deg); opacity: 0; }
  10% { opacity: var(--o, 0.8); }
  85% { opacity: var(--o, 0.8); }
  100% { transform: translate3d(var(--sway, 24px), -108vh, 0) rotate(18deg); opacity: 0; }
}

/* ---- Groups / sections ---- */
.group {
  scroll-margin-top: 84px;
  padding-block: clamp(2.5rem, 6vw, 4rem);
}
.group + .group { border-top: 1px dashed var(--pink-200); }

.group-head {
  max-width: 660px;
  margin: 0 auto 2.25rem;
  text-align: center;
  animation: riseIn 0.6s var(--ease) both;
}

.group-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-bottom: 0.7rem;
  padding: 0.42rem 1rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--pink-100), var(--pink-200));
  color: var(--rose-800);
  font-weight: 800;
  font-size: 0.9rem;
}

.group-title {
  margin: 0 0 0.25rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.9rem, 4.5vw, 2.7rem);
  color: var(--rose-900);
}

.group-en {
  margin: 0 0 0.6rem;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--pink-500);
}

.group-desc {
  margin: 0 auto 0.85rem;
  max-width: 52ch;
  color: var(--rose-800);
}

.group-tip {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  text-align: left;
  max-width: 56ch;
  margin-inline: auto;
  padding: 0.7rem 1rem;
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  background: var(--card);
  box-shadow: var(--shadow-sm);
  color: var(--text-soft);
  font-size: 0.95rem;
}
.group-tip strong { color: var(--pink-600); }

/* ---- Card grid ---- */
.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 640px) {
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1000px) {
  .cards-grid { grid-template-columns: repeat(3, 1fr); }
}

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0.3rem;
  padding: 1.5rem 1.25rem 1.35rem;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  animation: cardIn 0.45s var(--ease) both;
  animation-delay: var(--d, 0s);
  transition: transform 0.25s var(--ease), box-shadow 0.25s var(--ease), border-color 0.25s var(--ease);
}
.card:hover {
  transform: translateY(-6px) scale(1.015);
  box-shadow: var(--shadow-md);
  border-color: var(--pink-300);
}

@keyframes cardIn {
  from { opacity: 0; transform: translateY(14px) scale(0.98); }
  to { opacity: 1; transform: none; }
}

.card-emoji {
  width: 76px;
  height: 76px;
  margin-bottom: 0.35rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  font-size: 2.4rem;
  line-height: 1;
  background: linear-gradient(135deg, var(--pink-50), var(--pink-200));
  box-shadow: inset 0 2px 6px rgba(255, 255, 255, 0.7), 0 8px 18px -8px rgba(255, 77, 109, 0.45);
}

.card-ipa {
  font-size: clamp(2.1rem, 5vw, 2.6rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--pink-500);
}

.card-word {
  margin: 0.15rem 0 0;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--rose-900);
}

.card-phon {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--rose-700);
}

.card-vi {
  margin: 0;
  font-size: 1rem;
  color: var(--text-soft);
}

.card-extra {
  margin: 0.3rem 0 0;
  padding: 0.3rem 0.65rem;
  font-size: 0.85rem;
  color: var(--rose-800);
  background: var(--pink-50);
  border: 1px dashed var(--pink-200);
  border-radius: var(--radius-sm);
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 0.95rem;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-size: 0.95rem;
  font-weight: 800;
  cursor: pointer;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease), filter 0.18s var(--ease),
    background 0.18s var(--ease), border-color 0.18s var(--ease), color 0.18s var(--ease);
}
.btn:active { transform: scale(0.96); }
.btn:focus-visible { outline: none; box-shadow: var(--ring); }

.btn-play {
  background: linear-gradient(135deg, var(--pink-400), var(--pink-500));
  color: #fff;
  box-shadow: 0 10px 22px -10px rgba(255, 77, 109, 0.7);
}
.btn-play:hover { transform: translateY(-2px); filter: brightness(1.05); }
.btn-play.is-playing { animation: pulse 0.9s var(--ease) infinite; }

.btn-mouth {
  background: var(--card);
  color: var(--rose-800);
  border-color: var(--pink-300);
}
.btn-mouth:hover { background: var(--pink-100); transform: translateY(-2px); }

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255, 77, 109, 0.5); }
  50% { box-shadow: 0 0 0 10px rgba(255, 77, 109, 0); }
}

/* ---- Footer ---- */
.site-footer {
  margin-top: 1rem;
  padding-block: 2.75rem;
  text-align: center;
  border-top: 1px solid var(--card-border);
  background: linear-gradient(180deg, transparent, var(--pink-100));
}

.footer-line {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.4rem, 3.2vw, 2rem);
  color: var(--rose-800);
}

.footer-sub {
  margin: 0;
  font-weight: 700;
  color: var(--text-soft);
}

.footer-note {
  margin: 0.6rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
}

/* ---- Modal ---- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 1rem;
}
.modal[hidden] { display: none; }

.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(89, 13, 34, 0.62);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.modal-box {
  position: relative;
  z-index: 1;
  width: min(760px, 100%);
  padding: 1.25rem;
  background: var(--card);
  color: var(--text);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  animation: riseIn 0.3s var(--ease) both;
}

.modal-close {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  width: 2.4rem;
  height: 2.4rem;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 50%;
  background: var(--pink-100);
  color: var(--rose-800);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  transition: transform 0.15s var(--ease), background 0.15s var(--ease);
}
.modal-close:hover { background: var(--pink-200); transform: rotate(90deg); }

.modal-title {
  margin: 0 2.5rem 0.65rem 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.6rem;
  color: var(--rose-900);
}

.modal-video {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: #000;
}
.modal-video iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.modal-hint {
  margin: 0.8rem 0 0;
  text-align: center;
  font-size: 0.9rem;
  color: var(--text-soft);
}

body.modal-open { overflow: hidden; }

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .heart { display: none; }
}