/* ============================================
   AutoMo Safety Consulting v2.0
   Direction: Industrial Precision + Swiss Typography
   ============================================ */

/* --- Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@300;400;500;600;700&family=IBM+Plex+Mono:wght@400;600&display=swap');
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/variable/pretendardvariable-dynamic-subset.min.css');

/* --- Design Tokens --- */
:root {
  --slate-950: #020617;
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-500: #64748b;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50:  #f8fafc;
  --white:     #ffffff;

  --warning:   #f59e0b;
  --danger:    #dc2626;

  --font-sans:  'Pretendard Variable', 'IBM Plex Sans', -apple-system, sans-serif;
  --font-mono:  'IBM Plex Mono', 'Consolas', monospace;

  --space-xs:  0.5rem;   /* 8px */
  --space-sm:  1rem;     /* 16px */
  --space-md:  1.5rem;   /* 24px */
  --space-lg:  2rem;     /* 32px */
  --space-xl:  3rem;     /* 48px */
  --space-2xl: 5rem;     /* 80px */
  --space-3xl: 8rem;     /* 128px */

  --max-w:     1200px;
  --grid-line: var(--slate-200);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--slate-700);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* --- Utility: Container --- */
.container {
  width: min(var(--max-w), 100% - var(--space-xl) * 2);
  margin: 0 auto;
}

/* ============================================
   HEADER / NAV
   ============================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--slate-200);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.875rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--slate-900);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav a {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--slate-500);
  letter-spacing: 0.02em;
  padding: var(--space-xs) 0;
  border-bottom: 1.5px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.nav a:hover {
  color: var(--slate-900);
  border-bottom-color: var(--slate-900);
}

/* Language Switch */
.lang-switch {
  display: flex;
  gap: 2px;
  margin-left: auto;
  margin-right: var(--space-lg);
}

.lang-switch button {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 10px;
  border: 1px solid var(--slate-200);
  background: transparent;
  color: var(--slate-500);
  cursor: pointer;
  transition: all 0.15s;
}

.lang-switch button:hover,
.lang-switch button.active {
  background: var(--slate-900);
  color: var(--white);
  border-color: var(--slate-900);
}

/* ============================================
   CERT BAR
   ============================================ */
.cert-bar {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--slate-200);
  background: var(--slate-50);
}

.cert-bar span {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--slate-500);
}

/* ============================================
   HERO
   ============================================ */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 85vh;
  background: var(--slate-950);
  color: var(--slate-100);
}

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-3xl) var(--space-2xl) var(--space-2xl);
}

.hero-visual {
  position: relative;
  overflow: hidden;
}

.hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero h1 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.15;
  color: var(--white);
  margin-bottom: var(--space-lg);
  max-width: 500px;
}

.hero-sub {
  font-size: 0.9375rem;
  color: var(--slate-300);
  line-height: 1.7;
  max-width: 440px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--slate-800);
  border-top: 1px solid var(--slate-800);
  margin-top: var(--space-xl);
}

.hero-stat {
  background: var(--slate-950);
  padding: var(--space-md) var(--space-sm);
}

.hero-stat .number {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  color: var(--warning);
  line-height: 1;
  display: block;
}

.hero-stat .label {
  font-size: 0.75rem;
  color: var(--slate-500);
  margin-top: var(--space-xs);
  display: block;
  letter-spacing: 0.04em;
}

/* CTA Button */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 12px 24px;
  border: 1.5px solid var(--white);
  background: transparent;
  color: var(--white);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.btn:hover {
  background: var(--white);
  color: var(--slate-900);
}

.btn--primary {
  background: var(--warning);
  border-color: var(--warning);
  color: var(--slate-900);
}

.btn--primary:hover {
  background: #d97706;
  border-color: #d97706;
}

/* ============================================
   SECTIONS
   ============================================ */
.section {
  padding: var(--space-3xl) 0;
}

.section + .section {
  border-top: 1px solid var(--slate-200);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--slate-500);
  margin-bottom: var(--space-xs);
}

.section h2 {
  font-weight: 700;
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  color: var(--slate-900);
  line-height: 1.2;
  margin-bottom: var(--space-2xl);
}

/* ============================================
   SERVICES GRID
   ============================================ */
.services .grid {
  display: grid;
  gap: 1px;
  background: var(--slate-200);
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  background: var(--white);
  padding: var(--space-lg);
  border: none;
  border-radius: 0;
  box-shadow: none;
  transition: background 0.2s;
}

.card:hover {
  background: var(--slate-50);
}

.card-number {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--slate-300);
  margin-bottom: var(--space-sm);
  display: block;
}

.card h3 {
  font-weight: 600;
  font-size: 1rem;
  color: var(--slate-900);
  margin-bottom: var(--space-xs);
}

.card p {
  font-size: 0.875rem;
  color: var(--slate-500);
  line-height: 1.6;
}

/* ============================================
   PROCESS / STEPS
   ============================================ */
.steps {
  display: grid;
  gap: 0;
  list-style: none;
}

.steps li {
  display: grid;
  grid-template-columns: 80px 1fr;
  align-items: baseline;
  padding: var(--space-md) 0;
  border-top: 1px solid var(--slate-200);
}

.steps li strong {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.8125rem;
  color: var(--warning);
}

/* ============================================
   CONTACT FORM
   ============================================ */
.contact-form {
  display: grid;
  gap: var(--space-sm);
  max-width: 560px;
  margin-top: var(--space-lg);
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px 0;
  border: none;
  border-bottom: 1px solid var(--slate-300);
  border-radius: 0;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--slate-900);
  background: transparent;
  transition: border-color 0.2s;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-bottom-color: var(--slate-900);
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: var(--slate-300);
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.contact-form button {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 14px 28px;
  border: 1.5px solid var(--slate-900);
  background: var(--slate-900);
  color: var(--white);
  cursor: pointer;
  transition: background 0.2s;
  justify-self: start;
}

.contact-form button:hover {
  background: transparent;
  color: var(--slate-900);
}

/* ============================================
   TIMELINE
   ============================================ */
.timeline {
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 120px 1fr;
  align-items: baseline;
  padding: var(--space-md) 0;
  border-top: 1px solid var(--slate-200);
}

.timeline li strong {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--slate-900);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  border-top: 1px solid var(--slate-200);
  padding: var(--space-xl) 0;
  background: var(--white);
}

.footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer p {
  font-size: 0.75rem;
  color: var(--slate-500);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
  .header .container {
    flex-wrap: wrap;
    height: auto;
    padding: var(--space-sm) 0;
    gap: var(--space-xs);
  }

  .nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    gap: var(--space-sm);
    padding: var(--space-xs) 0;
    border-top: 1px solid var(--slate-200);
  }

  .nav a { white-space: nowrap; }

  .lang-switch {
    margin-left: auto;
    margin-right: 0;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .hero-content {
    padding: var(--space-2xl) var(--space-md) var(--space-xl);
    order: 2;
  }

  .hero-visual {
    order: 1;
    height: 50vw;
    min-height: 200px;
  }

  .hero-stats { grid-template-columns: 1fr; }

  .hero h1 { font-size: clamp(1.75rem, 7vw, 2.5rem); }

  .services .grid { grid-template-columns: 1fr; }

  .steps li,
  .timeline li { grid-template-columns: 60px 1fr; }

  .cert-bar {
    flex-wrap: wrap;
    gap: var(--space-sm);
  }

  .section { padding: var(--space-2xl) 0; }
}

/* ============================================
   LANGUAGE TOGGLE DISPLAY
   ============================================ */
[data-lang="en"] { display: none; }