/* ================================================================
   대성오토(주) Design System — Colors & Type
   ================================================================ */

/* Web fonts — Pretendard (모든 텍스트) + JetBrains Mono (레이블/숫자/캐프션)
   - Pretendard via jsdelivr CDN
   - JetBrains Mono via Google Fonts (400/500/600)
   ⚠️ Loaded via CDN — swap to self-hosted woff2 for production. */
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.css');
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* ---------------------------------------------------------------
     1. BRAND COLORS
     --------------------------------------------------------------- */
  --brand-navy:        #14213d;   /* Midnight Navy — primary, trust */
  --brand-navy-deep:   #0b1629;   /* Ink — headers, footers */
  --brand-navy-ink:    #0b1629;   /* Deepest — body on light */
  --brand-navy-hover:  #1f3558;   /* Azurite — hover */
  --brand-gold:        #b8944a;   /* Antique Gold — accent */
  --brand-gold-soft:   #d4b878;   /* Champagne — soft, hover tint */
  --brand-gold-deep:   #8a6d2a;   /* Bronze — pressed, ink */

  /* ---------------------------------------------------------------
     2. NEUTRALS — warm, document-paper feel
     --------------------------------------------------------------- */
  --paper:             #f4efe6;   /* Parchment — main bg */
  --paper-soft:        #faf6ec;   /* Ivory — subtle panel */
  --paper-edge:        #eae3d3;   /* Linen — divider */
  --paper-sand:        #e7e2d6;   /* Sand */

  --white:             #ffffff;   /* Pearl White */
  --alabaster:         #f5f3ee;
  --stone-100:         #d9d4c8;
  --stone-200:         #b5ae9e;
  --stone-300:         #847c6c;
  --stone-400:         #4f4a42;   /* Graphite */
  --stone-500:         #2a2823;   /* Espresso */
  --stone-900:         #141210;   /* Obsidian */

  /* legacy aliases (kept for backwards compat in earlier files) */
  --gray-50:           var(--alabaster);
  --gray-100:          var(--stone-100);
  --gray-200:          var(--stone-100);
  --gray-300:          var(--stone-200);
  --gray-400:          var(--stone-300);
  --gray-500:          var(--stone-400);
  --gray-600:          var(--stone-400);
  --gray-700:          var(--stone-500);
  --gray-800:          var(--stone-500);
  --gray-900:          var(--stone-900);

  /* ---------------------------------------------------------------
     3. SEMANTIC FOREGROUND / BACKGROUND
     --------------------------------------------------------------- */
  --fg-1:              var(--brand-navy-ink);    /* Primary text */
  --fg-2:              var(--gray-600);          /* Secondary text */
  --fg-3:              var(--gray-500);          /* Tertiary / meta */
  --fg-muted:          var(--gray-400);          /* Disabled, captions */
  --fg-inverse:        var(--paper);             /* Text on navy */
  --fg-accent:         var(--brand-gold-deep);   /* Gold ink, links */

  --bg-1:              var(--paper);             /* Main page bg */
  --bg-2:              var(--white);             /* Card bg on paper */
  --bg-3:              var(--paper-soft);        /* Subtle panel */
  --bg-inverse:        var(--brand-navy);        /* Dark section bg */
  --bg-inverse-deep:   var(--brand-navy-deep);   /* Footer bg */

  --border-subtle:     rgba(26, 42, 74, 0.08);
  --border-default:    rgba(26, 42, 74, 0.14);
  --border-strong:     rgba(26, 42, 74, 0.28);
  --border-gold:       rgba(201, 168, 76, 0.45);
  --border-inverse:    rgba(246, 242, 234, 0.14);

  /* ---------------------------------------------------------------
     4. SEMANTIC STATUS (used sparingly — industrial tone)
     --------------------------------------------------------------- */
  --success:           #2e5d4a;  /* muted forest */
  --success-bg:        #e8efea;
  --warning:           #8a6d2a;  /* bronze */
  --warning-bg:        #f3ecd9;
  --danger:            #8c3a2e;  /* burnt sienna */
  --danger-bg:         #f0e1dd;
  --info:              var(--brand-navy);
  --info-bg:           #e4e8ef;

  /* ---------------------------------------------------------------
     5. TYPOGRAPHY — families
     - --font-sans: Pretendard — 제목/본문/버튼 등 모든 텍스트
     - --font-mono: JetBrains Mono — eyebrow 라벨, 큰 숫자(bignum), 캐프션
     --------------------------------------------------------------- */
  --font-sans:         'Pretendard', 'Pretendard Variable', 'Noto Sans KR',
                       -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-mono:         'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;

  /* legacy aliases — 이전 파일들이 --font-body / --font-display 쓰고 있어서 유지 */
  --font-body:         var(--font-sans);
  --font-display:      var(--font-sans);

  /* ---------------------------------------------------------------
     6. TYPE SCALE — modular, optimized for Korean
     --------------------------------------------------------------- */
  --fs-xs:             12px;
  --fs-sm:             14px;
  --fs-base:           16px;
  --fs-md:             18px;
  --fs-lg:             20px;
  --fs-xl:             24px;
  --fs-2xl:            30px;
  --fs-3xl:            38px;
  --fs-4xl:            48px;
  --fs-5xl:            64px;
  --fs-hero:           80px;

  --lh-tight:          1.15;
  --lh-snug:           1.35;
  --lh-normal:         1.55;    /* Korean body default */
  --lh-relaxed:        1.75;

  --ls-tight:          -0.02em;
  --ls-normal:          0;
  --ls-wide:            0.04em;
  --ls-kicker:          0.18em; /* Uppercase small labels */

  --fw-regular:        400;
  --fw-medium:         500;
  --fw-semibold:       600;
  --fw-bold:           700;
  --fw-black:          900;

  /* ---------------------------------------------------------------
     7. SPACING SCALE — 4px base
     --------------------------------------------------------------- */
  --sp-0:              0;
  --sp-1:              4px;
  --sp-2:              8px;
  --sp-3:              12px;
  --sp-4:              16px;
  --sp-5:              24px;
  --sp-6:              32px;
  --sp-7:              48px;
  --sp-8:              64px;
  --sp-9:              96px;
  --sp-10:             128px;

  /* ---------------------------------------------------------------
     8. RADII
     --------------------------------------------------------------- */
  --r-0:               0;
  --r-1:               2px;      /* Buttons — formal, angular */
  --r-2:               4px;      /* Cards, inputs */
  --r-3:               8px;      /* Larger containers */
  --r-pill:            999px;    /* Badges, tags */

  /* ---------------------------------------------------------------
     9. SHADOWS / ELEVATION
     --------------------------------------------------------------- */
  --elev-0:            none;
  --elev-1:            0 1px 2px rgba(26, 42, 74, 0.06),
                       0 1px 1px rgba(26, 42, 74, 0.04);
  --elev-2:            0 4px 12px rgba(26, 42, 74, 0.08),
                       0 2px 4px rgba(26, 42, 74, 0.05);
  --elev-3:            0 12px 32px rgba(26, 42, 74, 0.12),
                       0 4px 8px rgba(26, 42, 74, 0.06);
  --elev-4:            0 24px 64px rgba(26, 42, 74, 0.18);
  --glow-gold:         0 0 0 4px rgba(201, 168, 76, 0.18);
  --glow-gold-strong:  0 0 0 6px rgba(201, 168, 76, 0.28),
                       0 8px 24px rgba(201, 168, 76, 0.22);

  /* ---------------------------------------------------------------
     10. MOTION
     --------------------------------------------------------------- */
  --ease-standard:     cubic-bezier(0.4, 0, 0.2, 1);
  --ease-entrance:     cubic-bezier(0, 0, 0.2, 1);
  --ease-exit:         cubic-bezier(0.4, 0, 1, 1);
  --dur-fast:          150ms;
  --dur-base:          300ms;
  --dur-slow:          500ms;

  /* ---------------------------------------------------------------
     11. LAYOUT
     --------------------------------------------------------------- */
  --container:         1200px;
  --container-narrow:  960px;
  --prose:             680px;
  --header-h:          64px;

  /* Phone CTA — always golden pill */
  --phone-cta-bg:      var(--brand-gold);
  --phone-cta-bg-hover: var(--brand-gold-deep);
  --phone-cta-fg:      var(--brand-navy-ink);
}

/* ================================================================
   SEMANTIC ELEMENT STYLES
   ================================================================ */

html {
  font-family: var(--font-body);
  color: var(--fg-1);
  background: var(--bg-1);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  word-break: keep-all;           /* Korean-friendly line breaking */
  overflow-wrap: break-word;
}

body {
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
}

/* Headline display — Pretendard, weighty, tight */
h1, .h1 {
  font-family: var(--font-sans);
  font-weight: var(--fw-black);
  font-size: clamp(var(--fs-4xl), 5vw, var(--fs-hero));
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  color: var(--fg-1);
  margin: 0;
}

h2, .h2 {
  font-family: var(--font-sans);
  font-weight: var(--fw-bold);
  font-size: clamp(var(--fs-2xl), 3.2vw, var(--fs-4xl));
  line-height: var(--lh-tight);
  letter-spacing: var(--ls-tight);
  color: var(--fg-1);
  margin: 0;
}

h3, .h3 {
  font-family: var(--font-sans);
  font-weight: var(--fw-bold);
  font-size: var(--fs-2xl);
  line-height: var(--lh-snug);
  color: var(--fg-1);
  margin: 0;
}

h4, .h4 {
  font-family: var(--font-body);
  font-weight: var(--fw-bold);
  font-size: var(--fs-xl);
  line-height: var(--lh-snug);
  color: var(--fg-1);
  margin: 0;
}

h5, .h5 {
  font-family: var(--font-body);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-md);
  line-height: var(--lh-snug);
  margin: 0;
}

p {
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-normal);
  color: var(--fg-1);
  margin: 0 0 var(--sp-4);
}

small, .caption {
  font-size: var(--fs-sm);
  color: var(--fg-2);
  line-height: var(--lh-snug);
}

/* Eyebrow / kicker — JetBrains Mono for an industrial, technical feel */
.kicker {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-kicker);
  text-transform: uppercase;
  color: var(--fg-accent);
}

/* Big numbers / metrics — JetBrains Mono, tabular */
.bignum {
  font-family: var(--font-mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
  color: var(--brand-navy);
}

.metric {
  font-family: var(--font-body);
  font-weight: var(--fw-black);
  font-variant-numeric: tabular-nums;
  font-size: var(--fs-5xl);
  line-height: 1;
  letter-spacing: var(--ls-tight);
  color: var(--brand-navy);
}

a {
  color: var(--fg-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-fast) var(--ease-standard);
}
a:hover {
  border-bottom-color: var(--brand-gold);
}

code, pre {
  font-family: var(--font-mono);
  font-size: 0.92em;
}

/* Reset helpers */
*, *::before, *::after { box-sizing: border-box; }
img { max-width: 100%; display: block; }
