/* =============================================
   DEMCO CSI - Custom Stylesheet
   ============================================= */

/* Pretendard Font */
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css');

/* CSS Variables */
:root {
  --color-brand: #a21a16;
  --color-brand-dark: #7d1410;
  --color-brand-light: #c42320;
  --color-zinc-950: #09090b;
  --color-zinc-900: #18181b;
  --color-zinc-800: #27272a;
  --color-zinc-700: #3f3f46;
  --color-zinc-400: #a1a1aa;
  --color-zinc-200: #e4e4e7;
  --color-zinc-100: #f4f4f5;
  --font-kr: 'Pretendard', -apple-system, sans-serif;
  --font-en: 'Outfit', sans-serif;
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Base Reset & Typography */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-kr);
  background-color: #fff;
  color: var(--color-zinc-900);
  overflow-x: hidden;
}

/* Korean text rules */
p, h1, h2, h3, h4, h5, h6, li, span, a, button, label {
  word-break: keep-all;
  overflow-wrap: break-word;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: var(--color-zinc-950);
}

::-webkit-scrollbar-thumb {
  background: var(--color-brand);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-brand-light);
}

/* =============================================
   HEADER
   ============================================= */

#main-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background-color var(--transition-base),
              backdrop-filter var(--transition-base),
              box-shadow var(--transition-base);
}

#main-header.scrolled {
  background-color: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08);
}

#main-header.scrolled .header-logo {
  color: var(--color-zinc-950);
}

#main-header.scrolled .nav-link {
  color: var(--color-zinc-700);
}

#main-header.scrolled .nav-link:hover {
  color: var(--color-brand);
}

.header-logo {
  font-family: var(--font-en);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.02em;
  color: white;
  transition: color var(--transition-base);
  text-decoration: none;
}

.header-logo-transparent {
  color: white;
}

.header-logo .logo-dot {
  color: var(--color-brand);
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
  text-decoration: none;
  transition: color var(--transition-base);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.nav-link:hover:after,
.nav-link.active:after {
  transform: scaleX(1);
}

.nav-link.active {
  color: var(--color-brand) !important;
}

/* Dropdown */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 180px;
  padding: 1rem 0 0 0; /* 상단 패딩으로 gap 유지, 호버 영역은 연결 */
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base),
              transform var(--transition-base),
              visibility var(--transition-base);
  pointer-events: none;
}

.nav-dropdown-inner {
  background: white;
  border: 1px solid var(--color-zinc-200);
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12), 0 4px 20px rgba(0, 0, 0, 0.08);
  padding: 0.5rem;
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: all;
}

.nav-dropdown-inner a {
  display: block;
  padding: 0.6rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-zinc-700);
  text-decoration: none;
  border-radius: 8px;
  transition: background-color var(--transition-base), color var(--transition-base);
  white-space: nowrap;
  word-break: keep-all;
}

.nav-dropdown-inner a:hover {
  background-color: rgba(162, 26, 22, 0.06);
  color: var(--color-brand);
}

/* Mobile Menu */
#mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 999;
  background: var(--color-zinc-950);
  overflow-y: auto;
}

#mobile-menu.open {
  display: block;
}

/* =============================================
   HERO SECTION
   ============================================= */

.hero-section {
  min-height: 100dvh;
  position: relative;
  overflow: hidden;
}

.hero-text-animate {
  animation: heroFadeUp 0.8s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero-text-animate:nth-child(2) { animation-delay: 0.15s; }
.hero-text-animate:nth-child(3) { animation-delay: 0.3s; }
.hero-text-animate:nth-child(4) { animation-delay: 0.45s; }

@keyframes heroFadeUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* =============================================
   SCROLL ANIMATIONS
   ============================================= */

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
              transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

.reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* =============================================
   BENTO GRID
   ============================================= */

.bento-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 1rem;
}

.bento-large {
  grid-column: 1 / 2;
  grid-row: 1 / 3;
}

.bento-medium {
  grid-column: 2 / 4;
  grid-row: 1 / 2;
}

.bento-small-1 {
  grid-column: 2 / 3;
  grid-row: 2 / 3;
}

.bento-small-2 {
  grid-column: 3 / 4;
  grid-row: 2 / 3;
}

@media (max-width: 768px) {
  .bento-grid {
    grid-template-columns: 1fr;
    grid-template-rows: auto;
  }
  .bento-large,
  .bento-medium,
  .bento-small-1,
  .bento-small-2 {
    grid-column: 1 / 2;
    grid-row: auto;
  }
}

/* =============================================
   CARDS
   ============================================= */

.glass-card {
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.card-hover {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card-hover:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

/* Brand Card Accent Line */
.card-accent {
  position: relative;
}

.card-accent::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-brand), var(--color-brand-light));
  border-radius: 3px 3px 0 0;
}

/* =============================================
   STATS BAR
   ============================================= */

.stats-bar {
  display: flex;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.stats-bar::-webkit-scrollbar {
  display: none;
}

/* =============================================
   TIMELINE
   ============================================= */

.timeline-line {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, transparent, var(--color-brand), transparent);
  transform: translateX(-50%);
}

@media (max-width: 768px) {
  .timeline-line {
    left: 1.5rem;
  }
}

/* =============================================
   BUTTONS
   ============================================= */

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--color-brand);
  color: white;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.875rem 1.75rem;
  border-radius: 8px;
  text-decoration: none;
  transition: background-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
  word-break: keep-all;
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background-color: var(--color-brand-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(162, 26, 22, 0.35);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: transparent;
  color: white;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.875rem 1.75rem;
  border-radius: 8px;
  text-decoration: none;
  border: 1.5px solid rgba(255, 255, 255, 0.3);
  transition: border-color var(--transition-base), background-color var(--transition-base), transform var(--transition-base);
  word-break: keep-all;
  cursor: pointer;
}

.btn-outline:hover {
  border-color: white;
  background-color: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
}

.btn-outline-dark {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: transparent;
  color: var(--color-zinc-700);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.875rem 1.75rem;
  border-radius: 8px;
  text-decoration: none;
  border: 1.5px solid var(--color-zinc-200);
  transition: border-color var(--transition-base), color var(--transition-base), transform var(--transition-base);
  word-break: keep-all;
  cursor: pointer;
}

.btn-outline-dark:hover {
  border-color: var(--color-brand);
  color: var(--color-brand);
  transform: translateY(-2px);
}

/* =============================================
   SECTION LABELS
   ============================================= */

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-brand);
  margin-bottom: 1rem;
}

.section-eyebrow::before {
  content: '';
  display: block;
  width: 2rem;
  height: 2px;
  background: var(--color-brand);
}

/* =============================================
   PAGE HERO (inner pages)
   ============================================= */

.page-hero {
  background: linear-gradient(135deg, var(--color-zinc-950) 0%, #1a0a09 100%);
  position: relative;
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  right: -10%;
  top: -20%;
  width: 60%;
  height: 140%;
  background: radial-gradient(ellipse, rgba(162, 26, 22, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

/* =============================================
   FOOTER
   ============================================= */

.footer-brand-line {
  height: 3px;
  background: linear-gradient(90deg, var(--color-brand) 0%, var(--color-brand-light) 50%, transparent 100%);
}

/* =============================================
   MEDIA TABS
   ============================================= */

.tab-btn {
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  font-size: 0.9rem;
  border-bottom: 2px solid transparent;
  color: var(--color-zinc-400);
  background: none;
  border-top: none;
  border-left: none;
  border-right: none;
  cursor: pointer;
  transition: color var(--transition-base), border-color var(--transition-base);
  word-break: keep-all;
}

.tab-btn.active {
  color: var(--color-brand);
  border-bottom-color: var(--color-brand);
}

.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

/* =============================================
   CAREER BADGE
   ============================================= */

.badge-open {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: rgba(34, 197, 94, 0.1);
  color: #16a34a;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(34, 197, 94, 0.25);
}

.badge-open::before {
  content: '';
  display: block;
  width: 6px;
  height: 6px;
  background: #16a34a;
  border-radius: 50%;
  animation: pulse-green 2s infinite;
}

@keyframes pulse-green {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* =============================================
   MISC UTILITIES
   ============================================= */

.brand-red { color: var(--color-brand); }
.bg-brand { background-color: var(--color-brand); }

.gradient-brand {
  background: linear-gradient(135deg, var(--color-brand) 0%, #c42320 100%);
}

.text-balance {
  text-wrap: balance;
}

.divider-zinc {
  border: none;
  border-top: 1px solid rgba(255,255,255,0.08);
}

/* Number animation */
.count-up {
  font-family: var(--font-en);
  font-variant-numeric: tabular-nums;
}

/* Image overlay */
.img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 40%, rgba(9, 9, 11, 0.85) 100%);
}