/* ============================================================
   Team Maker — Figma-style monochrome + pastel color blocks
   Font: Pretendard (Korean-compatible, fine variable weights)
   ============================================================ */

:root {
  /* Colors */
  --primary: #000000;
  --on-primary: #ffffff;
  --ink: #000000;
  --canvas: #ffffff;
  --hairline: #e6e6e6;
  --hairline-soft: #f1f1f1;
  --surface-soft: #f7f7f5;
  --accent-magenta: #b81570; /* CANB brand magenta, used as single-shot accent */

  /* Group surfaces — muted, low-saturation neutrals that read as one family */
  --g-1: #f3f1ec; /* warm stone */
  --g-2: #eef0ec; /* soft sage */
  --g-3: #edeef1; /* cool mist */
  --g-4: #f1eef0; /* pale mauve */
  --g-5: #f0eee8; /* sand */
  --g-6: #ebeef0; /* slate haze */

  /* Radius */
  --r-md: 8px;
  --r-lg: 24px;
  --r-xl: 32px;
  --r-pill: 50px;
  --r-full: 9999px;

  /* Spacing */
  --s-xs: 8px;
  --s-sm: 12px;
  --s-md: 16px;
  --s-lg: 24px;
  --s-xl: 32px;
  --s-xxl: 48px;
  --s-section: 96px;

  /* Type */
  --sans: "Noto Sans KR", system-ui, -apple-system, "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", "Consolas", "Liberation Mono", Menlo, monospace;
}

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

html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }

body {
  font-family: var(--sans);
  font-feature-settings: "kern" 1;
  color: var(--ink);
  background: var(--canvas);
  min-height: 100vh;
}

/* ---------- Typographic tokens ---------- */
.eyebrow {
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.54px;
  color: var(--ink);
}
.caption {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.display-xl {
  font-size: clamp(40px, 8vw, 86px);
  font-weight: 350;
  line-height: 1.0;
  letter-spacing: -1.72px;
}

/* ---------- Top nav ---------- */
.top-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 64px;
  background: var(--canvas);
  border-bottom: 1px solid var(--hairline);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(var(--s-lg), 4vw, var(--s-xxl));
}
.brand {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}
.brand img { height: 34px; width: auto; display: block; }
.brand-fallback {
  display: none;
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.4px;
  color: var(--accent-magenta);
}
.nav-eyebrow { color: #8a8a8a; }

/* ---------- Container ---------- */
.container {
  max-width: 880px;
  margin: 0 auto;
  padding: clamp(var(--s-xxl), 7vw, var(--s-section)) clamp(var(--s-lg), 4vw, var(--s-xxl)) var(--s-section);
}

/* ---------- Hero ---------- */
.hero { margin-bottom: var(--s-xxl); }
.hero .eyebrow { color: #8a8a8a; margin-bottom: var(--s-md); }
.display-xl { margin-bottom: var(--s-lg); }
.hero-lead {
  font-size: 20px;
  font-weight: 330;
  line-height: 1.4;
  letter-spacing: -0.14px;
  color: var(--ink);
  max-width: 46ch;
}
.teacher-inline {
  font-weight: 700;
  color: var(--accent-magenta);
}

/* ---------- Input card ---------- */
.card {
  background: var(--canvas);
  border: 1px solid var(--hairline);
  border-radius: var(--r-lg);
  padding: clamp(var(--s-lg), 4vw, var(--s-xl));
}
.label {
  display: block;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: var(--s-sm);
}
.names-input {
  width: 100%;
  resize: none;
  height: 200px;
  border: 1px solid var(--hairline);
  border-radius: var(--r-md);
  padding: 14px 16px;
  font-family: var(--sans);
  font-size: 18px;
  font-weight: 320;
  line-height: 1.6;
  color: var(--ink);
  background: var(--canvas);
  outline: none;
  transition: height 0.3s ease, border-color 0.15s, box-shadow 0.15s;
}
/* When results are shown, collapse the input so results sit near the top */
body.has-result .names-input { height: 72px; }
.names-input::placeholder { color: #b3b3b3; }
.names-input:focus {
  border-color: var(--ink);
  box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.08);
}

.meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-md);
  margin-top: var(--s-md);
}
.count {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.4px;
  color: #8a8a8a;
}
.actions { display: flex; gap: var(--s-sm); }

/* ---------- Buttons (pill only) ---------- */
.btn {
  font-family: var(--sans);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.1px;
  border: none;
  border-radius: var(--r-pill);
  cursor: pointer;
  min-height: 44px;
  padding: 10px 24px;
  transition: transform 0.08s ease, background 0.15s ease, opacity 0.15s ease;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { opacity: 0.86; }
.btn-secondary {
  background: var(--canvas);
  color: var(--ink);
  border: 1px solid var(--hairline);
}
.btn-secondary:hover { background: var(--surface-soft); }

/* ---------- Result ---------- */
.result { margin-top: var(--s-xl); }
.result:empty { margin-top: 0; }

.result-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-sm);
  flex-wrap: wrap;
  margin-bottom: var(--s-lg);
}
.result-header h2 {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 350;
  line-height: 1.1;
  letter-spacing: -0.6px;
}
.result-header .summary {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.4px;
  color: #8a8a8a;
}

.teams-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--s-md);
}

/* Group cards — muted surface is the depth device (no shadow) */
.team-card {
  border-radius: var(--r-lg);
  padding: var(--s-lg);
  background: var(--g-1);
  animation: pop 0.32s ease both;
}
.team-card.g1 { background: var(--g-1); }
.team-card.g2 { background: var(--g-2); }
.team-card.g3 { background: var(--g-3); }
.team-card.g4 { background: var(--g-4); }
.team-card.g5 { background: var(--g-5); }
.team-card.g6 { background: var(--g-6); }

@keyframes pop {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.member {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 0;
  text-align: center;
}
.member + .member { border-top: 1px solid rgba(0, 0, 0, 0.08); }
.member-name {
  font-size: 20px;
  font-weight: 500;
  letter-spacing: -0.2px;
}

/* Teacher emphasis */
.member.is-teacher .member-name {
  font-weight: 700;
  color: var(--accent-magenta);
}

/* Empty / hint state */
.empty {
  border: 1px dashed var(--hairline);
  border-radius: var(--r-lg);
  padding: var(--s-xxl);
  text-align: center;
  color: #8a8a8a;
  font-size: 18px;
  font-weight: 330;
}

/* ---------- Footer ---------- */
.footer {
  border-top: 1px solid var(--hairline);
  padding: var(--s-xxl) clamp(var(--s-lg), 4vw, var(--s-xxl));
  color: #8a8a8a;
}

/* ---------- Responsive ---------- */
@media (max-width: 560px) {
  .meta-row { flex-direction: column; align-items: stretch; }
  .actions { justify-content: flex-end; }
  .btn { flex: 1; }
  .display-xl { letter-spacing: -1px; }
}