/* ─── Debut Diary · candy-pastel UI · girl ver. (light pink) / boy ver. (dark blue) ─── */

:root {
  --bg: #f6effc;
  --bg-2: #fdeef6;
  --card: #ffffff;
  --card-soft: #f9f4ff;
  --ink: #4a3d63;
  --ink-soft: #8b7ea6;
  --ink-body: #5d5178;
  --lavender: #b79ce8;
  --lavender-deep: #8f6fd8;
  --accent: #f78fc0;
  --accent-deep: #ee5fa4;
  --mint: #7fdcc3;
  --gold: #f7c65f;
  --glow-a: rgba(247, 143, 192, 0.18);
  --glow-b: rgba(183, 156, 232, 0.22);
  --header-bg: rgba(246, 239, 252, 0.82);
  --line: rgba(183, 156, 232, 0.25);
  --line-soft: rgba(183, 156, 232, 0.18);
  --shadow-color: rgba(143, 111, 216, 0.16);
  --shadow-color-soft: rgba(143, 111, 216, 0.10);
  --btn-glow: rgba(143, 111, 216, 0.35);
  --accent-glow: rgba(238, 95, 164, 0.35);
  --neon: #ee5fa4;
  --neon-halo: rgba(247, 143, 192, 0.8);
  --neon-halo-soft: rgba(247, 143, 192, 0.5);
  --icon-lav-hi: #d9c8f5;
  --icon-accent-hi: #ffd1e6;
  --icon-mnt-hi: #c9f3e6;
  --icon-gld-hi: #ffe9bb;
  --phone-shadow: rgba(143, 111, 216, 0.35);
  --radius: 26px;
  --shadow: 0 10px 30px var(--shadow-color);
  --shadow-soft: 0 6px 18px var(--shadow-color-soft);
}

:root[data-trainee="boy"] {
  --bg: #1d2336;
  --bg-2: #202a41;
  --card: #2a3450;
  --card-soft: #232c44;
  --ink: #e8edfb;
  --ink-soft: #98a6cb;
  --ink-body: #c3cce8;
  --lavender: #7fa3e8;
  --lavender-deep: #5b82d8;
  --accent: #6fb6e8;
  --accent-deep: #3f8fd0;
  --mint: #66d1b5;
  --gold: #f0c268;
  --glow-a: rgba(63, 143, 208, 0.14);
  --glow-b: rgba(91, 130, 216, 0.16);
  --header-bg: rgba(29, 35, 54, 0.82);
  --line: rgba(127, 163, 232, 0.25);
  --line-soft: rgba(127, 163, 232, 0.16);
  --shadow-color: rgba(0, 0, 0, 0.35);
  --shadow-color-soft: rgba(0, 0, 0, 0.25);
  --btn-glow: rgba(91, 130, 216, 0.4);
  --accent-glow: rgba(63, 143, 208, 0.4);
  --neon: #7fc3f0;
  --neon-halo: rgba(111, 182, 232, 0.8);
  --neon-halo-soft: rgba(111, 182, 232, 0.45);
  --icon-lav-hi: #b9cdf5;
  --icon-accent-hi: #bfe2f7;
  --icon-mnt-hi: #a8e8d4;
  --icon-gld-hi: #f7ddaa;
  --phone-shadow: rgba(0, 0, 0, 0.5);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Nunito", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1000px 600px at 85% -5%, var(--glow-a), transparent 60%),
    radial-gradient(900px 700px at -10% 30%, var(--glow-b), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  line-height: 1.65;
  font-size: 17px;
  transition: color .3s ease;
}

h1, h2, h3, .logo, .btn { font-family: "Fredoka", sans-serif; }

.wrap { max-width: 1060px; margin: 0 auto; padding: 0 24px; }

/* ─── nav ─── */
header {
  position: sticky; top: 0; z-index: 10;
  background: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
nav {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; gap: 14px;
}
.logo {
  font-weight: 600; font-size: 1.35rem; text-decoration: none;
  color: var(--ink); display: flex; align-items: center; gap: 10px;
  white-space: nowrap;
}
.logo .heart {
  display: inline-grid; place-items: center;
  width: 38px; height: 38px; border-radius: 13px;
  background: linear-gradient(145deg, var(--accent) 0%, var(--accent-deep) 100%);
  box-shadow: inset 0 2px 3px rgba(255,255,255,.55), 0 4px 10px var(--accent-glow);
  font-size: 1.1rem;
}
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a {
  text-decoration: none; color: var(--ink-soft); font-weight: 700; font-size: .95rem;
  transition: color .2s;
}
.nav-links a:hover { color: var(--lavender-deep); }

/* version toggle */
.ver-toggle {
  display: flex; gap: 4px; padding: 4px;
  background: var(--card-soft); border: 1px solid var(--line);
  border-radius: 999px;
}
.ver-toggle button {
  font-family: "Fredoka", sans-serif; font-weight: 500; font-size: .85rem;
  border: 0; background: transparent; color: var(--ink-soft);
  border-radius: 999px; padding: 5px 13px; cursor: pointer;
  transition: background .2s, color .2s;
}
.ver-toggle button.active {
  background: var(--card); color: var(--ink);
  box-shadow: var(--shadow-soft);
}

.btn {
  display: inline-block; text-decoration: none; text-align: center;
  font-weight: 600; font-size: 1rem; color: #fff;
  padding: 12px 28px; border: 0; border-radius: 999px; cursor: pointer;
  background: linear-gradient(145deg, var(--lavender) 0%, var(--lavender-deep) 100%);
  box-shadow: inset 0 2px 3px rgba(255,255,255,.45), 0 8px 18px var(--btn-glow);
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn.pink {
  background: linear-gradient(145deg, var(--accent) 0%, var(--accent-deep) 100%);
  box-shadow: inset 0 2px 3px rgba(255,255,255,.5), 0 8px 18px var(--accent-glow);
}
.btn.small { padding: 9px 22px; font-size: .9rem; }

/* ─── hero ─── */
.hero {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px;
  align-items: center; padding: 72px 0 40px;
}
.neon {
  font-family: "Fredoka", sans-serif; font-weight: 500;
  font-size: .95rem; letter-spacing: .22em; text-transform: uppercase;
  color: var(--neon);
  text-shadow: 0 0 12px var(--neon-halo), 0 0 28px var(--neon-halo-soft);
  margin-bottom: 18px;
}
.hero h1 {
  font-size: clamp(2.3rem, 5vw, 3.4rem); font-weight: 600;
  line-height: 1.15; letter-spacing: -0.01em; margin-bottom: 20px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(120deg, var(--lavender-deep), var(--accent-deep));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
:root[data-trainee="boy"] .hero h1 em {
  background: linear-gradient(120deg, var(--lavender), var(--accent));
  -webkit-background-clip: text; background-clip: text;
}
.hero p.lead { font-size: 1.15rem; color: var(--ink-soft); max-width: 46ch; margin-bottom: 30px; }
.coming { display: inline-block; margin-top: 14px; font-size: .85rem; font-weight: 800; color: var(--ink-soft); letter-spacing: .06em; text-transform: uppercase; }

.signup-form { display: flex; gap: 10px; flex-wrap: wrap; max-width: 440px; }
.signup-form input[type="email"] {
  flex: 1; min-width: 200px; font: inherit; color: var(--ink);
  background: var(--card);
  border: 2px solid var(--line); border-radius: 999px;
  padding: 11px 20px; outline: none; transition: border-color .2s, box-shadow .2s;
}
.signup-form input[type="email"]:focus {
  border-color: var(--lavender-deep);
  box-shadow: 0 0 0 4px var(--line-soft);
}

.phone-stack { position: relative; display: flex; justify-content: center; }
.phone-stack img {
  width: min(300px, 70vw); border-radius: 32px;
  box-shadow: 0 24px 60px var(--phone-shadow);
  border: 6px solid #fff;
}
:root[data-trainee="boy"] .phone-stack img { border-color: #3a4666; }
.phone-stack img.back {
  position: absolute; right: -6%; top: 9%; width: min(250px, 55vw);
  transform: rotate(7deg); z-index: -1; opacity: .92;
}
.phone-stack img.front { transform: rotate(-3deg); margin-right: 18%; }

/* ─── features ─── */
section { padding: 56px 0; }
.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 { font-size: 2rem; font-weight: 600; margin-bottom: 8px; }
.section-head p { color: var(--ink-soft); }
.section-head a { color: var(--lavender-deep); }

.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  background: var(--card); border-radius: var(--radius); padding: 30px 26px;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--line-soft);
  transition: transform .2s ease, box-shadow .2s ease, background .3s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.card .icon {
  width: 52px; height: 52px; border-radius: 18px; display: grid; place-items: center;
  font-size: 1.5rem; margin-bottom: 16px;
  box-shadow: inset 0 2px 3px rgba(255,255,255,.6), 0 5px 12px var(--shadow-color-soft);
}
.icon.lav { background: linear-gradient(145deg, var(--icon-lav-hi), var(--lavender)); }
.icon.pnk { background: linear-gradient(145deg, var(--icon-accent-hi), var(--accent)); }
.icon.mnt { background: linear-gradient(145deg, var(--icon-mnt-hi), var(--mint)); }
.icon.gld { background: linear-gradient(145deg, var(--icon-gld-hi), var(--gold)); }
.card h3 { font-size: 1.15rem; font-weight: 600; margin-bottom: 8px; }
.card p { font-size: .95rem; color: var(--ink-soft); }

/* ─── contact ─── */
.contact-card {
  max-width: 560px; margin: 0 auto;
  background: var(--card); border-radius: var(--radius);
  box-shadow: var(--shadow); border: 1px solid var(--line-soft);
  padding: 40px 38px;
  transition: background .3s ease;
}
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 800; font-size: .85rem; letter-spacing: .04em; margin-bottom: 7px; color: var(--ink); }
.field input, .field textarea {
  width: 100%; font: inherit; color: var(--ink);
  background: var(--card-soft);
  border: 2px solid var(--line); border-radius: 16px;
  padding: 12px 16px; outline: none; transition: border-color .2s, box-shadow .2s;
}
.field input:focus, .field textarea:focus {
  border-color: var(--lavender-deep);
  box-shadow: 0 0 0 4px var(--line-soft);
}
.field textarea { min-height: 130px; resize: vertical; }
.form-note { font-size: .82rem; color: var(--ink-soft); margin-top: 14px; text-align: center; }
.form-note a { color: var(--lavender-deep); }

/* ─── footer ─── */
footer {
  border-top: 1px solid var(--line);
  padding: 30px 0 40px; margin-top: 30px;
}
.foot { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.foot p { font-size: .88rem; color: var(--ink-soft); }
.foot a { color: var(--lavender-deep); font-weight: 700; text-decoration: none; font-size: .88rem; }
.foot a:hover { text-decoration: underline; }
.foot .links { display: flex; gap: 20px; }

/* ─── privacy page ─── */
.prose { max-width: 720px; margin: 0 auto; padding: 56px 0 30px; }
.prose h1 { font-size: 2.3rem; font-weight: 600; margin-bottom: 6px; }
.prose .updated { color: var(--ink-soft); font-size: .9rem; margin-bottom: 34px; }
.prose h2 { font-size: 1.3rem; font-weight: 600; margin: 34px 0 10px; }
.prose p, .prose li { color: var(--ink-body); }
.prose ul { padding-left: 22px; margin: 10px 0; }
.prose li { margin-bottom: 6px; }
.prose a { color: var(--lavender-deep); }
.prose .card-note {
  background: var(--card); border-radius: 20px; padding: 20px 24px;
  border: 1px solid var(--line); box-shadow: var(--shadow-soft);
  margin: 24px 0; font-size: .95rem;
}

/* ─── responsive ─── */
@media (max-width: 880px) {
  .hero { grid-template-columns: 1fr; text-align: center; padding-top: 48px; }
  .hero p.lead { margin-left: auto; margin-right: auto; }
  .signup-form { margin-left: auto; margin-right: auto; justify-content: center; }
  .phone-stack { margin-top: 12px; }
  .cards { grid-template-columns: 1fr 1fr; }
  .nav-links { gap: 14px; }
}
@media (max-width: 640px) {
  .cards { grid-template-columns: 1fr; }
  .nav-links a.hide-sm { display: none; }
  .ver-toggle .ver-label { display: none; }
  .ver-toggle button { padding: 5px 10px; }
  .contact-card { padding: 30px 22px; }
}