/* ==========================================================================
   한양텍 (Hanyang Tech) 홍보 웹사이트 공통 스타일
   ========================================================================== */

:root {
  --color-navy-900: #0b2340;
  --color-navy-800: #0f2f52;
  --color-navy-700: #143b66;
  --color-blue-600: #1565c0;
  --color-blue-500: #1e7fd8;
  --color-accent: #e07b1a;
  --color-accent-dark: #c4650c;
  --color-gray-50: #f6f8fa;
  --color-gray-100: #eef1f5;
  --color-gray-200: #e1e6ec;
  --color-gray-400: #9aa5b1;
  --color-gray-600: #5b6673;
  --color-gray-800: #2a323c;
  --color-white: #ffffff;
  --shadow-card: 0 6px 20px rgba(11, 35, 64, 0.08);
  --shadow-card-hover: 0 12px 28px rgba(11, 35, 64, 0.14);
  --radius: 10px;
  --max-width: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Pretendard", "Noto Sans KR", "Malgun Gothic", -apple-system, sans-serif;
  color: var(--color-gray-800);
  background: var(--color-white);
  line-height: 1.6;
  word-break: keep-all;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4, p {
  margin: 0;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- 버튼 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-white);
}
.btn-accent:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 18px rgba(224, 123, 26, 0.35);
}

.btn-outline {
  background: transparent;
  border-color: var(--color-white);
  color: var(--color-white);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
  transform: translateY(-2px);
}

.btn-outline-navy {
  background: transparent;
  border-color: var(--color-navy-700);
  color: var(--color-navy-700);
}
.btn-outline-navy:hover {
  background: var(--color-navy-700);
  color: var(--color-white);
}

.btn-block {
  width: 100%;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- 헤더 / 내비게이션 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-navy-900);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: var(--max-width);
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  flex-direction: column;
  color: var(--color-white);
  line-height: 1.2;
}
.nav-logo .logo-main {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.5px;
}
.nav-logo .logo-sub {
  font-size: 0.72rem;
  color: var(--color-gray-400);
  font-weight: 500;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-menu a {
  color: var(--color-gray-100);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 6px 2px;
  border-bottom: 2px solid transparent;
  transition: border-color 0.15s ease, color 0.15s ease;
}
.nav-menu a:hover,
.nav-menu a.active {
  color: var(--color-white);
  border-color: var(--color-accent);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 1.6rem;
  cursor: pointer;
}

@media (max-width: 860px) {
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-navy-800);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 24px 16px;
    display: none;
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-menu a {
    width: 100%;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  .nav-toggle {
    display: block;
  }
  .nav-actions .btn-accent-desktop-only {
    display: none;
  }
}

/* ---------- 액센트 디바이더 ---------- */
.accent-divider {
  height: 4px;
  width: 100%;
  background: linear-gradient(90deg, var(--color-blue-600) 0%, var(--color-accent) 50%, var(--color-blue-600) 100%);
  background-size: 200% 100%;
  opacity: 0.9;
}
.accent-divider-center {
  height: 4px;
  width: 72px;
  margin: 0 auto 28px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--color-blue-600), var(--color-accent));
}

/* ---------- 스크롤 reveal 애니메이션 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-stagger.is-visible > * {
  opacity: 1;
  transform: none;
}
.reveal-stagger.is-visible > *:nth-child(1) { transition-delay: 0.05s; }
.reveal-stagger.is-visible > *:nth-child(2) { transition-delay: 0.12s; }
.reveal-stagger.is-visible > *:nth-child(3) { transition-delay: 0.19s; }
.reveal-stagger.is-visible > *:nth-child(4) { transition-delay: 0.26s; }
.reveal-stagger.is-visible > *:nth-child(5) { transition-delay: 0.33s; }
.reveal-stagger.is-visible > *:nth-child(6) { transition-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
  .reveal, .reveal-stagger > * {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- 히어로 (메인) ---------- */
.hero {
  position: relative;
  background-color: var(--color-navy-900);
  background-image:
    radial-gradient(ellipse at 50% 0%, rgba(224, 123, 26, 0.16), transparent 55%),
    linear-gradient(135deg, rgba(11, 35, 64, 0.95) 0%, rgba(20, 59, 102, 0.92) 100%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.05) 0, rgba(255, 255, 255, 0.05) 1px, transparent 1px, transparent 48px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.05) 0, rgba(255, 255, 255, 0.05) 1px, transparent 1px, transparent 48px);
  color: var(--color-white);
  padding: 100px 24px 90px;
  text-align: center;
  overflow: hidden;
}
.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-accent);
  background: rgba(224, 123, 26, 0.15);
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 18px;
}
.hero p.hero-desc {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--color-gray-100);
  max-width: 640px;
  margin: 0 auto 34px;
}
.hero .btn-group {
  justify-content: center;
}

/* ---------- 페이지 서브 히어로 (서비스 상세 페이지) ---------- */
.page-hero {
  position: relative;
  background-color: var(--color-navy-900);
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(224, 123, 26, 0.14), transparent 55%),
    linear-gradient(135deg, rgba(11, 35, 64, 0.95) 0%, rgba(20, 59, 102, 0.92) 100%),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.05) 0, rgba(255, 255, 255, 0.05) 1px, transparent 1px, transparent 40px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.05) 0, rgba(255, 255, 255, 0.05) 1px, transparent 1px, transparent 40px);
  color: var(--color-white);
  padding: 64px 24px;
  overflow: hidden;
}
.page-hero .breadcrumb {
  font-size: 0.85rem;
  color: var(--color-gray-400);
  margin-bottom: 14px;
}
.page-hero .breadcrumb a:hover {
  color: var(--color-white);
}
.page-hero h1 {
  font-size: clamp(1.6rem, 3.6vw, 2.3rem);
  font-weight: 800;
  margin-bottom: 12px;
}
.page-hero p {
  color: var(--color-gray-100);
  max-width: 640px;
}

/* ---------- 공통 섹션 ---------- */
.section {
  padding: 84px 24px;
}
.section-alt {
  background: var(--color-gray-50);
}
.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}
.section-eyebrow {
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--color-blue-600);
  text-transform: uppercase;
  margin-bottom: 10px;
  display: block;
}
.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--color-navy-900);
  margin-bottom: 14px;
}
.section-desc {
  color: var(--color-gray-600);
  font-size: 1rem;
}

/* ---------- 회사 소개 ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.about-text h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-navy-900);
  margin-bottom: 16px;
}
.about-text p {
  color: var(--color-gray-600);
  margin-bottom: 16px;
}
.about-list {
  margin-top: 20px;
}
.about-list li {
  display: flex;
  gap: 10px;
  padding: 8px 0;
  font-weight: 600;
  color: var(--color-navy-800);
}
.about-list li::before {
  content: "✔";
  color: var(--color-accent);
  font-weight: 800;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.stat-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 26px 20px;
  text-align: center;
  box-shadow: var(--shadow-card);
}
.stat-card .stat-num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-blue-600);
}
.stat-card .stat-num span {
  font-size: 1.1rem;
}
.stat-card .stat-label {
  margin-top: 6px;
  font-size: 0.88rem;
  color: var(--color-gray-600);
  font-weight: 600;
}

/* ---------- 서비스 카드 (메인) ---------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.service-card {
  position: relative;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 32px 24px;
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}
.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-blue-600), var(--color-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}
.service-card:hover::before {
  transform: scaleX(1);
}
.service-card .service-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--color-navy-900);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  transition: background 0.25s ease;
}
.service-card .service-icon svg {
  width: 26px;
  height: 26px;
  stroke: currentColor;
}
.service-card:hover .service-icon {
  background: var(--color-accent);
}
.service-card h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-navy-900);
  margin-bottom: 10px;
}
.service-card p {
  color: var(--color-gray-600);
  font-size: 0.92rem;
  flex-grow: 1;
  margin-bottom: 18px;
}
.service-card .service-link {
  font-weight: 700;
  color: var(--color-blue-600);
  font-size: 0.92rem;
}
.service-card .service-link:hover {
  text-decoration: underline;
}

/* ---------- 실적 / 조감도 갤러리 ---------- */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.portfolio-card {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.portfolio-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-card-hover);
}
.portfolio-card .portfolio-media {
  overflow: hidden;
}
.portfolio-card > img,
.portfolio-card .portfolio-media > img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.portfolio-card:hover img {
  transform: scale(1.06);
}
.img-placeholder {
  aspect-ratio: 4 / 3;
  background: repeating-linear-gradient(
    45deg,
    var(--color-gray-200),
    var(--color-gray-200) 12px,
    var(--color-gray-100) 12px,
    var(--color-gray-100) 24px
  );
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 16px;
  color: var(--color-gray-600);
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.5;
}
.img-placeholder .ph-icon {
  display: block;
  font-size: 1.6rem;
  margin-bottom: 6px;
}
.portfolio-body {
  padding: 20px;
}
.portfolio-tag {
  display: inline-block;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--color-blue-600);
  background: rgba(21, 101, 192, 0.1);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.portfolio-body h4 {
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--color-navy-900);
  margin-bottom: 6px;
}
.portfolio-body p {
  font-size: 0.86rem;
  color: var(--color-gray-600);
}

/* ---------- 왜 한양텍인가 ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.why-item {
  text-align: center;
  padding: 10px;
}
.why-item .why-num {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--color-accent);
  margin-bottom: 8px;
  letter-spacing: 1px;
}
.why-item h4 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--color-navy-900);
  margin-bottom: 10px;
}
.why-item p {
  font-size: 0.88rem;
  color: var(--color-gray-600);
}

/* ---------- 진행 절차 (서비스 상세) ---------- */
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}
.process-step {
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 22px 16px;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-card);
}
.process-step .step-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-blue-600);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  margin: 0 auto 12px;
}
.process-step h4 {
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--color-navy-900);
  margin-bottom: 6px;
}
.process-step p {
  font-size: 0.82rem;
  color: var(--color-gray-600);
}

/* ---------- 업무 범위 리스트 (서비스 상세) ---------- */
.scope-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.scope-item {
  display: flex;
  gap: 14px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow-card);
}
.scope-item .scope-mark {
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: rgba(224, 123, 26, 0.14);
  color: var(--color-accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}
.scope-item h4 {
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--color-navy-900);
  margin-bottom: 4px;
}
.scope-item p {
  font-size: 0.86rem;
  color: var(--color-gray-600);
}

/* ---------- CTA 섹션 ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--color-navy-800) 0%, var(--color-navy-900) 100%);
  color: var(--color-white);
  text-align: center;
  padding: 72px 24px;
}
.cta-section h2 {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 800;
  margin-bottom: 14px;
}
.cta-section p {
  color: var(--color-gray-100);
  margin-bottom: 30px;
}
.cta-section .btn-group {
  justify-content: center;
}

/* ---------- 연락처 카드 ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 40px;
}
.contact-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  padding: 22px;
  text-align: left;
}
.contact-card .contact-label {
  font-size: 0.78rem;
  color: var(--color-gray-400);
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}
.contact-card .contact-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-white);
}

/* ---------- 푸터 ---------- */
.site-footer {
  background: var(--color-navy-900);
  color: var(--color-gray-400);
  padding: 48px 24px 26px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 40px;
  margin-bottom: 32px;
}
.footer-brand .logo-main {
  color: var(--color-white);
  font-size: 1.3rem;
  font-weight: 800;
}
.footer-brand p {
  margin-top: 12px;
  font-size: 0.88rem;
  line-height: 1.7;
}
.footer-links h5 {
  color: var(--color-white);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 14px;
}
.footer-links ul li {
  padding: 5px 0;
  font-size: 0.88rem;
}
.footer-links ul li a:hover {
  color: var(--color-white);
}
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 20px;
  font-size: 0.8rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 반응형 ---------- */
@media (max-width: 980px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-steps {
    grid-template-columns: repeat(3, 1fr);
  }
  .about-grid {
    grid-template-columns: 1fr;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .services-grid,
  .portfolio-grid,
  .why-grid,
  .process-steps,
  .scope-grid {
    grid-template-columns: 1fr;
  }
  .hero {
    padding: 70px 20px 60px;
  }
  .section {
    padding: 56px 20px;
  }
}