/* ==========================================================
   Halcyon Design Language — shared tokens + primitives.
   Ported from the Halcyon design system prototype.
   All primitives are prefixed `hc-` to avoid collision
   with existing Tailwind utilities and legacy classes.
   ========================================================== */

:root {
  /* Neutrals (cool, slightly lilac-tinted off-whites & inks) */
  --hc-ink-0:   #FFFFFF;
  --hc-ink-50:  #FAFAFB;
  --hc-ink-100: #F4F4F7;
  --hc-ink-150: #EDEDF1;
  --hc-ink-200: #E4E4EA;
  --hc-ink-300: #D2D2DA;
  --hc-ink-400: #A8A8B3;
  --hc-ink-500: #7A7A86;
  --hc-ink-600: #54545E;
  --hc-ink-700: #35353D;
  --hc-ink-800: #1E1E24;
  --hc-ink-900: #0E0E12;

  /* Halcyon lilac halo */
  --hc-halo-a: #E8E4F5;
  --hc-halo-b: #F3EEF9;
  --hc-halo-c: #EEF1F8;
  --hc-halo-d: #F6F6FA;

  /* Brand accent — violet signature */
  --hc-accent-50:  #F1EEFC;
  --hc-accent-100: #E3DCFA;
  --hc-accent-200: #C9BCF4;
  --hc-accent-300: #A995EB;
  --hc-accent-400: #8A71E1;
  --hc-accent-500: #6C50D6;
  --hc-accent-600: #5A3FC4;
  --hc-accent-700: #4930A2;
  --hc-accent-800: #3A2680;

  /* Status */
  --hc-ok:   #1F8A5B;
  --hc-ok-bg: #E6F4EC;
  --hc-warn: #B5781A;
  --hc-warn-bg: #FAF0DC;
  --hc-err:  #B4342A;
  --hc-err-bg: #FAE5E2;
  --hc-info: #2A5FB4;
  --hc-info-bg: #E4ECFB;

  /* Signature halo background */
  --hc-bg-halo: radial-gradient(1200px 600px at 15% -10%, var(--hc-halo-a) 0%, transparent 55%),
                radial-gradient(900px 500px at 95% 0%, var(--hc-halo-c) 0%, transparent 50%),
                linear-gradient(180deg, var(--hc-halo-d) 0%, #FFFFFF 65%);

  /* Radii */
  --hc-r-xs: 6px;
  --hc-r-sm: 8px;
  --hc-r-md: 12px;
  --hc-r-lg: 16px;
  --hc-r-xl: 22px;
  --hc-r-full: 999px;

  /* Shadows */
  --hc-shadow-xs: 0 1px 0 rgba(14,14,18,0.04);
  --hc-shadow-sm: 0 1px 2px rgba(14,14,18,0.04), 0 0 0 1px rgba(14,14,18,0.04);
  --hc-shadow-md: 0 4px 14px -4px rgba(14,14,18,0.08), 0 0 0 1px rgba(14,14,18,0.05);
  --hc-shadow-lg: 0 20px 40px -16px rgba(14,14,18,0.14), 0 0 0 1px rgba(14,14,18,0.05);
  --hc-shadow-pop: 0 10px 30px -10px rgba(108,80,214,0.28), 0 0 0 1px rgba(108,80,214,0.12);

  --hc-hairline: 1px solid var(--hc-ink-200);

  /* Type (Geist) */
  --hc-font-sans: "Geist", ui-sans-serif, system-ui, -apple-system, "Noto Sans KR", "Segoe UI", sans-serif;
  --hc-font-mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  --hc-text-xs:   11px;
  --hc-text-sm:   12.5px;
  --hc-text-base: 14px;
  --hc-text-md:   15px;
  --hc-text-lg:   17px;
  --hc-text-xl:   20px;
  --hc-text-2xl:  26px;
  --hc-text-3xl:  34px;
  --hc-text-4xl:  46px;

  /* Spacing */
  --hc-s-1: 4px;
  --hc-s-2: 8px;
  --hc-s-3: 12px;
  --hc-s-4: 16px;
  --hc-s-5: 20px;
  --hc-s-6: 24px;
  --hc-s-8: 32px;
  --hc-s-10: 40px;
  --hc-s-12: 56px;
  --hc-s-16: 72px;
}

/* ============ SCOPED WRAPPER ============
   Place `.halcyon` on any container (body, main) to opt the
   subtree into Halcyon typography + base color. */
.halcyon {
  font-family: var(--hc-font-sans);
  font-size: var(--hc-text-base);
  color: var(--hc-ink-800);
  background: var(--hc-ink-0);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  letter-spacing: -0.005em;
}
.halcyon * { box-sizing: border-box; }
.halcyon a { color: inherit; }
.halcyon button { font-family: inherit; letter-spacing: inherit; }
.halcyon input, .halcyon select, .halcyon textarea { font-family: inherit; }

/* ============ BUTTONS ============ */
.hc-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 34px;
  padding: 0 14px;
  border-radius: var(--hc-r-sm);
  border: 1px solid transparent;
  font-size: var(--hc-text-base);
  font-weight: 500;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease, transform 80ms ease;
  white-space: nowrap;
  user-select: none;
  text-decoration: none;
  line-height: 1;
}
.hc-btn:active { transform: translateY(0.5px); }
.hc-btn.hc-lg { height: 42px; padding: 0 18px; font-size: var(--hc-text-md); border-radius: var(--hc-r-md); }
.hc-btn.hc-sm { height: 28px; padding: 0 10px; font-size: var(--hc-text-sm); }
.hc-btn.hc-block { width: 100%; }

.hc-btn.hc-primary {
  background: var(--hc-ink-900);
  color: #fff;
}
.hc-btn.hc-primary:hover { background: #000; }

.hc-btn.hc-secondary {
  background: var(--hc-ink-0);
  color: var(--hc-ink-800);
  border-color: var(--hc-ink-200);
}
.hc-btn.hc-secondary:hover { background: var(--hc-ink-100); }

.hc-btn.hc-ghost {
  background: transparent;
  color: var(--hc-ink-700);
}
.hc-btn.hc-ghost:hover { background: var(--hc-ink-100); }

.hc-btn.hc-accent {
  background: var(--hc-accent-500);
  color: #fff;
  box-shadow: var(--hc-shadow-pop);
}
.hc-btn.hc-accent:hover { background: var(--hc-accent-600); }

.hc-btn.hc-danger {
  background: var(--hc-err);
  color: #fff;
}

/* ============ INPUTS ============ */
.hc-input {
  height: 38px;
  padding: 0 12px;
  border: 1px solid var(--hc-ink-200);
  border-radius: var(--hc-r-sm);
  background: var(--hc-ink-0);
  color: var(--hc-ink-800);
  font-size: var(--hc-text-base);
  width: 100%;
  transition: border-color 120ms, box-shadow 120ms;
  outline: none;
}
.hc-input:focus {
  border-color: var(--hc-accent-400);
  box-shadow: 0 0 0 3px var(--hc-accent-100);
}
.hc-input::placeholder { color: var(--hc-ink-400); }
select.hc-input { padding-right: 32px; appearance: auto; }

.hc-label {
  font-size: 12px;
  color: var(--hc-ink-600);
  margin-bottom: 6px;
  display: block;
}

/* ============ CARD ============ */
.hc-card {
  background: var(--hc-ink-0);
  border: var(--hc-hairline);
  border-radius: var(--hc-r-md);
  box-shadow: var(--hc-shadow-sm);
}

/* ============ BADGE ============ */
.hc-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 20px;
  padding: 0 8px;
  border-radius: var(--hc-r-full);
  font-size: 11px;
  font-weight: 500;
  background: var(--hc-ink-100);
  color: var(--hc-ink-700);
  border: 1px solid var(--hc-ink-150);
  letter-spacing: 0;
  line-height: 1;
}
.hc-badge.hc-ok    { background: var(--hc-ok-bg);   color: var(--hc-ok);   border-color: transparent; }
.hc-badge.hc-warn  { background: var(--hc-warn-bg); color: var(--hc-warn); border-color: transparent; }
.hc-badge.hc-err   { background: var(--hc-err-bg);  color: var(--hc-err);  border-color: transparent; }
.hc-badge.hc-info  { background: var(--hc-info-bg); color: var(--hc-info); border-color: transparent; }
.hc-badge.hc-accent{ background: var(--hc-accent-50); color: var(--hc-accent-700); border-color: transparent; }

.hc-dot {
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ============ TYPE / UTILITY ============ */
.hc-mono { font-family: var(--hc-font-mono); font-feature-settings: "tnum" 1, "ss01" 1; }
.hc-tnum { font-variant-numeric: tabular-nums; }
.hc-muted  { color: var(--hc-ink-500); }
.hc-subtle { color: var(--hc-ink-400); }
.hc-hairline-t { border-top: var(--hc-hairline); }
.hc-hairline-b { border-bottom: var(--hc-hairline); }

.hc-hstack { display: flex; align-items: center; gap: var(--hc-s-3); }
.hc-vstack { display: flex; flex-direction: column; gap: var(--hc-s-3); }

.hc-eyebrow {
  font-family: var(--hc-font-mono);
  font-size: 10px;
  color: var(--hc-accent-600);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.hc-eyebrow.hc-neutral { color: var(--hc-ink-500); }

.hc-display {
  font-size: 46px;
  font-weight: 400;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 0;
}
.hc-title {
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.015em;
  margin: 0;
}
.hc-h1 {
  font-size: 34px;
  font-weight: 400;
  letter-spacing: -0.025em;
  line-height: 1.1;
  margin: 0;
}

/* ============ HALO BACKGROUND ============ */
.hc-halo-bg {
  background: var(--hc-bg-halo);
  background-color: var(--hc-ink-0);
}

/* ============ AVATAR ============ */
.hc-avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--hc-accent-300), var(--hc-accent-500));
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 600;
  flex-shrink: 0;
}
.hc-avatar.hc-sq { border-radius: var(--hc-r-xs); }
.hc-avatar.hc-lg { width: 40px; height: 40px; font-size: 14px; }
.hc-avatar.hc-sm { width: 22px; height: 22px; font-size: 10px; }

/* ============ BRAND MARK ============ */
.hc-brandmark {
  width: 24px; height: 24px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, #fff 0%, rgba(255,255,255,0) 40%),
    conic-gradient(from 220deg, var(--hc-accent-300), var(--hc-accent-500), var(--hc-accent-700), var(--hc-accent-300));
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.35);
  flex-shrink: 0;
}
.hc-brandmark.hc-lg { width: 36px; height: 36px; }

/* ============ DIVIDER ============ */
.hc-hr {
  height: 1px;
  background: var(--hc-ink-150);
  border: 0;
  margin: 0;
}
.hc-hr.hc-dashed {
  background: transparent;
  border-top: 1px dashed var(--hc-ink-150);
}

/* ============ MARKETING NAV ============ */
.hc-mktg-nav {
  padding: 20px 40px;
  display: flex;
  align-items: center;
  gap: 32px;
}
.hc-mktg-nav a {
  color: var(--hc-ink-600);
  font-size: 13px;
  text-decoration: none;
  cursor: pointer;
}
.hc-mktg-nav a:hover { color: var(--hc-ink-900); }
.hc-mktg-nav a.hc-active { color: var(--hc-ink-900); font-weight: 500; }

/* ============ STEPPER ============ */
.hc-stepper { display: flex; align-items: center; width: 100%; }
.hc-stepper .hc-step { display: flex; align-items: center; gap: 10px; }
.hc-stepper .hc-step-bubble {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--hc-ink-150);
  color: var(--hc-ink-500);
  display: flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 500;
  font-family: var(--hc-font-mono);
  flex-shrink: 0;
}
.hc-stepper .hc-step.hc-done .hc-step-bubble { background: var(--hc-ink-900); color: #fff; }
.hc-stepper .hc-step.hc-current .hc-step-bubble { background: var(--hc-accent-500); color: #fff; }
.hc-stepper .hc-step-label { font-size: 13px; color: var(--hc-ink-500); }
.hc-stepper .hc-step.hc-done .hc-step-label { color: var(--hc-ink-700); }
.hc-stepper .hc-step.hc-current .hc-step-label { color: var(--hc-ink-900); font-weight: 500; }
.hc-stepper .hc-step-sep {
  flex: 1;
  height: 1px;
  margin: 0 16px;
  background: var(--hc-ink-200);
}
.hc-stepper .hc-step-sep.hc-done { background: var(--hc-ink-900); }

/* ============ KPI CARD ============ */
.hc-kpi {
  padding: 16px;
}
.hc-kpi .hc-kpi-k {
  font-family: var(--hc-font-mono);
  font-size: 10px;
  color: var(--hc-ink-500);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.hc-kpi .hc-kpi-v {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-top: 8px;
}
.hc-kpi .hc-kpi-num {
  font-family: var(--hc-font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 24px;
  letter-spacing: -0.02em;
}

/* ============ DENSE TABLE ============ */
.hc-table { width: 100%; border-collapse: collapse; background: var(--hc-ink-0); }
.hc-table thead th {
  font-family: var(--hc-font-mono);
  font-size: 11px;
  font-weight: 400;
  color: var(--hc-ink-500);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 12px 18px;
  background: var(--hc-ink-50);
  border-bottom: var(--hc-hairline);
  text-align: left;
}
.hc-table tbody td {
  padding: 14px 18px;
  border-bottom: var(--hc-hairline);
  font-size: 13px;
  vertical-align: middle;
}
.hc-table tbody tr:last-child td { border-bottom: none; }
.hc-table tbody tr:hover td { background: var(--hc-ink-50); }

/* ============ MISC ============ */
.hc-progress-track {
  height: 4px;
  background: var(--hc-ink-150);
  border-radius: var(--hc-r-full);
  overflow: hidden;
}
.hc-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--hc-accent-400), var(--hc-accent-600));
  border-radius: var(--hc-r-full);
}

.hc-scroll::-webkit-scrollbar { width: 8px; height: 8px; }
.hc-scroll::-webkit-scrollbar-thumb { background: var(--hc-ink-200); border-radius: 99px; }
.hc-scroll::-webkit-scrollbar-track { background: transparent; }

/* ============ LAYOUT HELPERS ============ */
.hc-page { min-height: 100vh; display: flex; flex-direction: column; }
.hc-container-sm { max-width: 560px; margin: 0 auto; padding: 0 24px; }
.hc-container-md { max-width: 760px; margin: 0 auto; padding: 0 24px; }
.hc-container-lg { max-width: 1280px; margin: 0 auto; padding: 0 40px; }

.hc-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.hc-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.hc-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }

@media (max-width: 960px) {
  .hc-grid-2, .hc-grid-3, .hc-grid-4 { grid-template-columns: 1fr; }
  .hc-mktg-nav { padding: 16px 20px; gap: 16px; flex-wrap: wrap; }
  .hc-container-lg { padding: 0 20px; }
}