/* ── Fonts ─────────────────────────────────────────────────── */
@font-face {
  font-family: 'NanumSquareNeo';
  src: url('assets/fonts/NanumSquareNeo-Variable.woff2') format('woff2-variations');
  font-weight: 300 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Kombat11';
  src: url('assets/fonts/Kombat11-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
  font-synthesis: none;
}

/* ── Design tokens ─────────────────────────────────────────── */
:root {
  --color-bg:            #0a0a0a;
  --color-surface:       #111111;
  --color-surface-raised:#1a1a1a;
  --color-border:        #2a2a2a;
  --color-gold:          #c9a84c;
  --color-gold-bright:   #f0c040;
  --color-gold-dim:      #7a6030;
  --color-text-primary:  #f0ece0;
  --color-text-secondary:#888880;
  --color-danger:        #cc3333;

  --text-display:    3.5rem;
  --text-heading:    1.75rem;
  --text-subheading: 1.25rem;
  --text-body:       1rem;
  --text-caption:    0.875rem;
  --text-small:      0.75rem;

  --space-1: 4px;  --space-2: 8px;   --space-3: 12px;
  --space-4: 16px; --space-6: 24px;  --space-8: 32px;
  --space-12: 48px; --space-16: 64px;

  --radius-sm: 2px; --radius-md: 4px; --radius-lg: 8px;
}

/* Kombat11은 Regular 단일 웨이트 — 합성 볼드 전면 차단 */
[style*="Kombat11"],
.hero-title, .hero-eyebrow,
.stat-number, .stat-label,
.section-title,
.carousel-counter,
.about-date,
.footer-title {
  font-synthesis: none;
  font-weight: 400;
}

/* ── Reset ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--color-bg);
  color: var(--color-text-primary);
  font-family: 'NanumSquareNeo', sans-serif;
  font-size: var(--text-body);
  line-height: 1.7;
}
a { color: var(--color-gold); text-decoration: none; transition: color .2s; }
a:hover { color: var(--color-gold-bright); }
img { display: block; width: 100%; height: auto; }
code {
  font-family: 'NanumSquareNeo', sans-serif;
  background: var(--color-surface-raised);
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  font-size: var(--text-caption);
  color: var(--color-gold);
  font-weight: 700;
}

/* ── Layout ────────────────────────────────────────────────── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 var(--space-6); }
.container-narrow { max-width: 680px; }

/* ── Buttons ───────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-md);
  font-weight: 600; font-size: var(--text-body);
  cursor: pointer; border: none; transition: all .2s;
  letter-spacing: .03em;
}
.btn-primary {
  background: var(--color-gold);
  color: #0a0a0a;
}
.btn-primary:hover {
  background: var(--color-gold-bright);
  color: #0a0a0a;
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(201,168,76,.35);
}
.btn-secondary {
  background: transparent;
  color: var(--color-gold);
  border: 1px solid var(--color-gold-dim);
}
.btn-secondary:hover {
  border-color: var(--color-gold);
  background: rgba(201,168,76,.08);
  color: var(--color-gold-bright);
}
.btn-badge {
  background: rgba(0,0,0,.25);
  border-radius: 999px;
  padding: 1px 8px;
  font-size: var(--text-caption);
  font-weight: 400;
}
.btn-badge:empty { display: none; }

/* ── Hero ──────────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  padding: var(--space-16) var(--space-6);
  background: #000;
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

/* 배경 영상 */
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0.5;
  z-index: 0;
  pointer-events: none;
}

/* 영상 위 골드 그라데이션 오버레이 — 하단 페이드 + 텍스트 가독성 */
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    linear-gradient(to bottom,
      rgba(0,0,0,0.35) 0%,
      rgba(0,0,0,0.1)  40%,
      rgba(0,0,0,0.5)  100%),
    radial-gradient(ellipse 80% 50% at 50% 100%, rgba(201,168,76,.12) 0%, transparent 70%);
  z-index: 1;
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; max-width: 800px; }
.hero-eyebrow {
  font-size: var(--text-caption);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-4);
}
.hero-title {
  font-family: 'Kombat11', sans-serif;
  font-size: clamp(3rem, 10vw, 6rem);
  letter-spacing: .06em;
  line-height: 1;
  color: var(--color-text-primary);
  text-shadow: 0 0 60px rgba(201,168,76,.2);
  margin-bottom: var(--space-2);
}
.hero-title-kr {
  display: block;
  color: var(--color-gold);
  font-family: 'Noto Sans KR', sans-serif;
  font-weight: 600;
  margin-bottom: var(--space-4);
}
.hero-subtitle {
  font-size: var(--text-subheading);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-16);
  line-height: 1.6;
}
.hero-actions {
  display: flex; gap: var(--space-4);
  justify-content: center; flex-wrap: wrap;
  margin-bottom: var(--space-8);
}
.hero-legal {
  font-size: var(--text-small);
  color: #444440;
  max-width: 500px; margin: 0 auto;
}
.hero-credit {
  font-size: var(--text-small);
  color: #333330;
  margin-top: var(--space-1);
  letter-spacing: .05em;
}

/* ── Stats ─────────────────────────────────────────────────── */
.stats {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-8) 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-4);
  text-align: center;
}
.stat-item { padding: var(--space-4); }
.stat-number {
  display: block;
  font-family: 'Kombat11', sans-serif;
  font-size: 2.5rem;
  color: var(--color-gold);
  letter-spacing: .04em;
  line-height: 1;
}
.stat-label {
  display: block;
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
  margin-top: var(--space-1);
  letter-spacing: .06em;
  text-transform: uppercase;
}

/* ── Section base ──────────────────────────────────────────── */
.section { padding: var(--space-16) 0; }
.section-dark { background: var(--color-surface); }
.section-title {
  font-family: 'Kombat11', sans-serif;
  font-size: var(--text-heading);
  letter-spacing: .08em;
  color: var(--color-gold);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
}
.section-sub {
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  font-size: var(--text-caption);
  letter-spacing: .04em;
}

/* ── Carousel ──────────────────────────────────────────────── */
.carousel-section { padding-bottom: 0; }
.carousel-section .container { margin-bottom: var(--space-8); }

.carousel {
  position: relative;
  width: 100%;
  background: #000;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.carousel-viewport {
  overflow: hidden;
  width: 100%;
}

.carousel-track {
  display: flex;
  transition: transform .45s cubic-bezier(.4, 0, .2, 1);
  will-change: transform;
}

.carousel-slide {
  flex: 0 0 100%;
  width: 100%;
  margin: 0;
}

/* 이미지 모드 */
.carousel-slide img {
  width: 100%;
  aspect-ratio: 21/9;
  object-fit: cover;
  display: block;
}

/* 플레이스홀더 모드 */
.carousel-placeholder {
  width: 100%;
  aspect-ratio: 21/9;
  background: var(--color-surface-raised);
  display: flex; align-items: center; justify-content: center;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  letter-spacing: .08em;
  line-height: 1.8;
  border-bottom: 1px solid var(--color-border);
}

/* 화살표 */
.carousel-arrow {
  position: absolute;
  top: 50%; transform: translateY(calc(-50% - 24px));
  background: rgba(10,10,10,.75);
  border: 1px solid var(--color-border);
  color: var(--color-text-primary);
  width: 48px; height: 48px;
  border-radius: 50%;
  font-size: 1.75rem;
  line-height: 1;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background .2s, border-color .2s, color .2s;
  z-index: 2;
  backdrop-filter: blur(4px);
}
.carousel-arrow:hover {
  background: rgba(201,168,76,.15);
  border-color: var(--color-gold-dim);
  color: var(--color-gold-bright);
}
.carousel-arrow--prev { left: var(--space-6); }
.carousel-arrow--next { right: var(--space-6); }
.carousel-arrow:disabled { opacity: .25; cursor: default; }

/* 하단 바 */
.carousel-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-8);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  gap: var(--space-4);
}

.carousel-caption {
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
  letter-spacing: .06em;
  min-width: 100px;
}

.carousel-dots {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}
.carousel-dot {
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-border);
  border: none; cursor: pointer;
  padding: 0;
  transition: background .2s, transform .2s;
}
.carousel-dot.active {
  background: var(--color-gold);
  transform: scale(1.4);
}
.carousel-dot:hover:not(.active) {
  background: var(--color-gold-dim);
}

.carousel-counter {
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  font-family: 'Kombat11', sans-serif;
  letter-spacing: .1em;
  min-width: 40px;
  text-align: right;
}

/* 모바일 */
@media (max-width: 600px) {
  .carousel-arrow { width: 36px; height: 36px; font-size: 1.25rem; }
  .carousel-arrow--prev { left: var(--space-3); }
  .carousel-arrow--next { right: var(--space-3); }
  .carousel-footer { padding: var(--space-3) var(--space-4); }
}

/* ── Features ──────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-4);
}
.feature-card {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color .2s;
}
.feature-card:hover { border-color: var(--color-gold-dim); }
.feature-icon {
  display: block;
  color: var(--color-gold);
  font-size: 1.25rem;
  margin-bottom: var(--space-3);
}
.feature-card h3 {
  font-size: var(--text-subheading);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}
.feature-card p {
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ── About timeline ────────────────────────────────────────── */
.about-timeline {
  position: relative;
  padding-left: var(--space-8);
  margin-top: var(--space-8);
}
.about-timeline::before {
  content: '';
  position: absolute;
  left: 7px; top: 8px; bottom: 8px;
  width: 1px;
  background: linear-gradient(to bottom, transparent, var(--color-border) 10%, var(--color-border) 90%, transparent);
}
.about-entry {
  position: relative;
  margin-bottom: var(--space-12);
}
.about-entry:last-child { margin-bottom: 0; }
.about-marker {
  position: absolute;
  left: calc(-1 * var(--space-8) + 3px);
  top: 8px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--color-border);
  border: 2px solid var(--color-surface);
}
.about-marker--gold {
  background: var(--color-gold);
  box-shadow: 0 0 10px rgba(201,168,76,.4);
}
.about-date {
  display: block;
  font-size: var(--text-small);
  letter-spacing: .1em;
  color: var(--color-gold-dim);
  margin-bottom: var(--space-2);
  font-family: 'Kombat11', sans-serif;
}
.about-body h3 {
  font-size: var(--text-subheading);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text-primary);
}
.about-body p {
  color: var(--color-text-secondary);
  font-size: var(--text-caption);
  line-height: 1.8;
}
.about-body em {
  color: var(--color-text-primary);
  font-style: normal;
  font-weight: 500;
}

/* ── Install steps ─────────────────────────────────────────── */
.install-steps {
  list-style: none;
  display: flex; flex-direction: column;
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}
.install-steps li {
  display: flex; gap: var(--space-6);
  align-items: flex-start;
}
.step-num {
  flex-shrink: 0;
  width: 36px; height: 36px;
  background: var(--color-gold);
  color: #0a0a0a;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: var(--text-body);
  font-family: 'Kombat11', sans-serif;
  letter-spacing: .04em;
}
.install-steps strong { display: block; margin-bottom: var(--space-1); }
.install-steps p { color: var(--color-text-secondary); font-size: var(--text-caption); }
.install-safety {
  border: 1px solid var(--color-gold-dim);
  border-left: 3px solid var(--color-gold);
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-6);
  margin-bottom: var(--space-6);
}
.install-safety ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.install-safety li {
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
  padding-left: var(--space-6);
  position: relative;
}
.install-safety li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-gold);
  font-weight: 600;
}
.install-manifest {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-6);
  margin-bottom: var(--space-4);
}
.manifest-title {
  font-size: var(--text-caption);
  color: var(--color-gold);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: var(--space-3);
}
.manifest-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.manifest-row {
  display: flex;
  gap: var(--space-6);
  font-size: var(--text-caption);
}
.manifest-row dt {
  color: var(--color-text-primary);
  font-family: 'Courier New', monospace;
  white-space: nowrap;
  min-width: 180px;
}
.manifest-row dd {
  color: var(--color-text-secondary);
}
.manifest-row dd a {
  color: var(--color-gold-dim);
  text-decoration: none;
}
.manifest-row dd a:hover {
  color: var(--color-gold);
}
.install-cta { text-align: center; }

/* ── Feedback form ─────────────────────────────────────────── */
.feedback-form {
  background: var(--color-surface-raised);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  margin-top: var(--space-8);
}
.form-row { margin-bottom: var(--space-6); }
.form-row label {
  display: block;
  font-size: var(--text-caption);
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2);
}
.label-hint { font-weight: 400; text-transform: none; letter-spacing: 0; }
.required { color: var(--color-danger); }
.form-row select,
.form-row input[type="text"],
.form-row textarea {
  width: 100%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-primary);
  font-family: inherit; font-size: var(--text-body);
  transition: border-color .2s;
  outline: none;
  resize: vertical;
}

.form-row select {
  padding-right: var(--space-12);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%237a6030' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
}
.form-row select:focus,
.form-row input:focus,
.form-row textarea:focus { border-color: var(--color-gold-dim); }
.form-row select option { background: var(--color-surface-raised); }
.form-footer {
  display: flex; align-items: center;
  gap: var(--space-6); flex-wrap: wrap;
  margin-top: var(--space-4);
}
.form-notice {
  font-size: var(--text-small);
  color: var(--color-text-secondary);
}
.form-result {
  margin-top: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-caption);
  text-align: center;
}
.form-result.success {
  background: rgba(201,168,76,.1);
  border: 1px solid var(--color-gold-dim);
  color: var(--color-gold);
}
.form-result.error {
  background: rgba(204,51,51,.1);
  border: 1px solid var(--color-danger);
  color: var(--color-danger);
}

/* ── Footer ────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--color-border);
  padding: var(--space-8) 0;
  text-align: center;
}
.footer-title {
  font-family: 'Kombat11', sans-serif;
  font-size: var(--text-subheading);
  color: var(--color-gold);
  letter-spacing: .1em;
  margin-bottom: var(--space-1);
}
.footer-credit {
  font-size: var(--text-caption);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}
.footer-links {
  font-size: var(--text-caption);
  margin-bottom: var(--space-4);
}
.footer-links .divider { margin: 0 var(--space-2); color: var(--color-border); }
.footer-legal {
  font-size: var(--text-small);
  color: #444440;
  max-width: 700px; margin: 0 auto;
  line-height: 1.6;
}

/* ── Responsive ────────────────────────────────────────────── */
@media (max-width: 600px) {
  .hero-title { font-size: 3rem; }
  .hero-actions { flex-direction: column; align-items: center; }
  .install-steps li { flex-direction: column; gap: var(--space-3); }
  .feedback-form { padding: var(--space-6) var(--space-4); }
  .form-footer { flex-direction: column; align-items: flex-start; }
}