/* =====================================================
   about.css — ABOUT 페이지 스타일
   ===================================================== */

/* ── 히어로 ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 0 24px;
}

/* 파도 배경 */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}
.wave {
  position: absolute;
  width: 200%;
  height: 200%;
  border-radius: 40%;
  opacity: 0.04;
  animation: waveRotate linear infinite;
}
.wave-1 {
  background: radial-gradient(ellipse at center, #118BCC 0%, transparent 70%);
  top: -60%;
  left: -50%;
  animation-duration: 22s;
}
.wave-2 {
  background: radial-gradient(ellipse at center, #11B6BB 0%, transparent 70%);
  top: -70%;
  left: -40%;
  animation-duration: 30s;
  animation-direction: reverse;
  opacity: 0.03;
}
.wave-3 {
  background: radial-gradient(ellipse at center, #118BCC 0%, transparent 60%);
  top: -50%;
  left: -60%;
  animation-duration: 38s;
  opacity: 0.025;
}
@keyframes waveRotate {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* 히어로 파티클 라인 */
.hero-line {
  position: absolute;
  width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(17,139,204,0.3), transparent);
  animation: lineFlow 4s ease-in-out infinite;
}
.hero-line:nth-child(1) { height: 120px; left: 20%; top: 15%; animation-delay: 0s; }
.hero-line:nth-child(2) { height: 80px; left: 75%; top: 30%; animation-delay: 1.5s; }
.hero-line:nth-child(3) { height: 100px; left: 45%; top: 70%; animation-delay: 3s; }
@keyframes lineFlow {
  0%, 100% { opacity: 0; transform: translateY(-20px); }
  50% { opacity: 1; transform: translateY(20px); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 24px;
  font-weight: 500;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.3s;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 7vw, 5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 28px;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.6s;
}
.hero-title .wave-text {
  display: inline-block;
  position: relative;
}
.hero-title .wave-text::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--grad);
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left;
  animation: underlineExpand 0.8s ease forwards 1.2s;
}
@keyframes underlineExpand { to { transform: scaleX(1); } }

.hero-sub {
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 560px;
  margin: 0 auto 40px;
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 0.9s;
}

.hero-cta {
  opacity: 0;
  animation: fadeUp 0.8s ease forwards 1.1s;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.scroll-indicator {
  position: absolute;
  bottom: 36px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  animation: bounceScroll 2s ease infinite;
  z-index: 1;
}
.scroll-indicator svg { opacity: 0.5; }
@keyframes bounceScroll {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ── 핵심 가치 ── */
.values-section { background: var(--bg-card); }

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  margin-top: 56px;
  border-radius: var(--radius);
  overflow: hidden;
}
.value-card {
  background: var(--bg-card2);
  padding: 40px 32px;
  position: relative;
  overflow: hidden;
  transition: background var(--transition);
}
.value-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.value-card:hover::before { transform: scaleX(1); }
.value-card:hover { background: rgba(17,139,204,0.05); }

.value-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}
.value-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}
.value-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ── 히스토리 타임라인 ── */
.history-section {}

.timeline {
  position: relative;
  margin-top: 56px;
  padding-left: 32px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--primary), transparent);
}
.timeline-item {
  position: relative;
  padding-bottom: 48px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -38px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--grad);
  box-shadow: 0 0 12px rgba(17,139,204,0.5);
}
.timeline-year {
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 6px;
}
.timeline-title {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}
.timeline-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 500px;
}

/* ── 비전 ── */
.vision-section { background: var(--bg-card); }

.vision-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  margin-top: 56px;
}
.vision-quote {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--text);
  position: relative;
  padding-left: 28px;
}
.vision-quote::before {
  content: '';
  position: absolute;
  left: 0;
  top: 4px;
  bottom: 4px;
  width: 3px;
  background: var(--grad);
  border-radius: 2px;
}
.vision-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.vision-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.vision-item-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(17,139,204,0.12);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.vision-item-text strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 4px;
  color: var(--text);
}
.vision-item-text p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── 반응형 ── */
@media (max-width: 900px) {
  .values-grid { grid-template-columns: 1fr 1fr; }
  .vision-inner { grid-template-columns: 1fr; gap: 48px; }
}
@media (max-width: 600px) {
  .values-grid { grid-template-columns: 1fr; }
}