/* ==============================================================================
 * 주식회사 아티스 (ARTIS) - Magnolia Hugo Custom CSS
 * 디자인 컨셉: Trust Blue & Clean White (B2B 신뢰감과 기술력의 정밀한 모던 스타일)
 * ============================================================================== */

/* 1. 디자인 토큰 (CSS Variables) */
:root {
  --primary-blue: #0B3C5D;
  --primary-dark: #07253B;
  --secondary-blue: #1D2731;
  --accent-blue: #328CC1;
  --accent-gold: #D9B310;
  --bg-light: #F8FAFC;
  --bg-white: #FFFFFF;
  --bg-card: #FFFFFF;
  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #94A3B8;
  --border-color: #E2E8F0;
  --shadow-sm: 0 2px 8px rgba(11, 60, 93, 0.06);
  --shadow-md: 0 8px 24px rgba(11, 60, 93, 0.1);
  --shadow-lg: 0 16px 36px rgba(11, 60, 93, 0.15);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --font-main: 'Noto Sans KR', 'Pretendard', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition-fast: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 2. 리셋 및 기본 스타일 */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-light);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 3. 헤더 및 네비게이션 Bar */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
  color: #fff;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -1px;
}

.logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary-blue);
  letter-spacing: -0.5px;
}

.logo-subtext {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
  display: block;
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition-fast);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
}

.nav-link:hover {
  color: var(--primary-blue);
  background-color: rgba(11, 60, 93, 0.04);
}

.header-cta-btn {
  background: var(--primary-blue);
  color: #fff !important;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  transition: var(--transition-fast);
  box-shadow: 0 4px 12px rgba(11, 60, 93, 0.25);
}

.header-cta-btn:hover {
  background: var(--accent-blue);
  transform: translateY(-2px);
}

/* 4. Hero Section */
.hero-section {
  position: relative;
  padding: 100px 0 80px;
  background: linear-gradient(135deg, #0B3C5D 0%, #1D2731 100%);
  color: #fff;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(50, 140, 193, 0.25) 0%, rgba(0,0,0,0) 70%);
  border-radius: 50%;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #60A5FA;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: #CBD5E1;
  margin-bottom: 36px;
  max-width: 640px;
  font-weight: 400;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
  border: none;
}

.btn-primary {
  background: var(--accent-gold);
  color: var(--primary-dark);
  box-shadow: 0 4px 14px rgba(217, 179, 16, 0.35);
}

.btn-primary:hover {
  background: #E5C125;
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(4px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.hero-card {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: var(--radius-md);
  padding: 32px;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-lg);
}

.hero-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: #F8FAFC;
  border-bottom: 2px solid var(--accent-blue);
  padding-bottom: 8px;

}

.hero-card-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.hero-card-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: #E2E8F0;
}

.hero-card-icon {
  color: #60A5FA;
  font-weight: 700;
}

/* 5. Trust Badges Section */
.badges-section {
  padding: 60px 0;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
}

.badges-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.badge-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px;
  background: var(--bg-light);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: var(--transition-fast);
}

.badge-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-blue);
}

.badge-icon {
  width: 56px;
  height: 56px;
  background: rgba(11, 60, 93, 0.08);
  color: var(--primary-blue);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  flex-shrink: 0;
}

.badge-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.badge-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* 6. Section Headers & Base Layout */
.section {
  padding: 90px 0;
}

.section-title-wrap {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-subtag {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-blue);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
  display: block;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary-blue);
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

/* 7. About Us Section */
.about-section {
  background: var(--bg-light);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.about-statement {
  background: var(--bg-white);
  padding: 40px;
  border-radius: var(--radius-md);
  border-left: 5px solid var(--primary-blue);
  box-shadow: var(--shadow-sm);
}

.about-statement-text {
  font-size: 1.1rem;
  line-height: 1.8;
  color: var(--text-primary);
  font-weight: 500;
}

.values-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 24px;
}

.values-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.value-item {
  background: var(--bg-white);
  padding: 20px 24px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: var(--transition-fast);
}

.value-item:hover {
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-sm);
}

.value-num {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--accent-blue);
  background: rgba(50, 140, 193, 0.1);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.value-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.value-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* 8. Products & Services Section - Tab UI */
.products-section {
  background: var(--bg-white);
}

.tab-nav {
  display: flex;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.tab-btn {
  padding: 14px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-secondary);
  background: var(--bg-light);
  border: 1px solid var(--border-color);
  border-radius: 30px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.tab-btn:hover {
  color: var(--primary-blue);
  border-color: var(--accent-blue);
}

.tab-btn.active {
  background: var(--primary-blue);
  color: #fff;
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-sm);
}

.tab-badge {
  background: var(--accent-gold);
  color: var(--primary-dark);
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 10px;
  margin-left: 6px;
}

.tab-content-container {
  max-width: 960px;
  margin: 0 auto;
}

.tab-panel {
  display: none;
  background: var(--bg-light);
  border-radius: var(--radius-md);
  padding: 40px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-md);
  animation: fadeIn 0.3s ease-in-out;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.product-detail-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 16px;
}

.product-detail-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary-blue);
}

.product-detail-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.7;
}

.product-usage-box {
  background: var(--bg-white);
  border-radius: var(--radius-sm);
  padding: 24px;
  border: 1px dashed var(--accent-blue);
}

.usage-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.usage-text {
  font-size: 0.95rem;
  color: var(--text-primary);
}

.product-rnd-notice {
  margin-top: 40px;
  background: linear-gradient(135deg, rgba(11, 60, 93, 0.05), rgba(50, 140, 193, 0.08));
  border: 1px solid rgba(50, 140, 193, 0.3);
  padding: 24px 32px;
  border-radius: var(--radius-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.rnd-notice-text {
  font-size: 1rem;
  font-weight: 600;
  color: var(--primary-blue);
}

/* 9. Cases & Applications Section */
.cases-section {
  background: var(--bg-light);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.case-card {
  background: var(--bg-white);
  border-radius: var(--radius-md);
  padding: 32px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-fast);
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-blue);
}

.case-tag {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-blue);
  background: rgba(50, 140, 193, 0.1);
  padding: 4px 10px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 14px;
}

.case-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 12px;
}

.case-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 10. Ordering Process Section (5 Steps) */
.process-section {
  background: var(--bg-white);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  position: relative;
}

.process-card {
  background: var(--bg-light);
  border-radius: var(--radius-md);
  padding: 24px 18px;
  border: 1px solid var(--border-color);
  text-align: center;
  position: relative;
  transition: var(--transition-fast);
}

.process-card:hover {
  background: #fff;
  border-color: var(--accent-blue);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.process-step-num {
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent-blue);
  background: rgba(50, 140, 193, 0.15);
  padding: 4px 12px;
  border-radius: 20px;
  display: inline-block;
  margin-bottom: 14px;
}

.process-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 8px;
}

.process-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* 11. Certifications & Equipment Section */
.equipment-section {
  background: var(--bg-light);
}

.equipment-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.equip-box {
  background: var(--bg-white);
  padding: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.equip-box-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary-blue);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.equip-box-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 12. Location & Map Section */
.location-section {
  background: var(--bg-white);
}

.location-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.location-info-card {
  background: var(--bg-light);
  padding: 36px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.loc-item {
  margin-bottom: 24px;
}

.loc-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-blue);
  margin-bottom: 4px;
  text-transform: uppercase;
}

.loc-val {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.6;
}

.map-placeholder {
  background: linear-gradient(135deg, #1D2731, #0B3C5D);
  border-radius: var(--radius-md);
  min-height: 340px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: #fff;
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-md);
}

.map-placeholder-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
  color: var(--accent-gold);
}

/* 13. Contact & Sample Request Form Section */
.contact-section {
  background: linear-gradient(135deg, #F1F5F9 0%, #E2E8F0 100%);
  padding: 90px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: start;
}

.contact-form-card {
  background: var(--bg-white);
  padding: 44px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.form-group {
  margin-bottom: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-label {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.form-label .req {
  color: #EF4444;
  margin-left: 4px;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-family: inherit;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-light);
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--accent-blue);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(50, 140, 193, 0.15);
}

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

.contact-direct-card {
  background: var(--primary-blue);
  color: #fff;
  padding: 40px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.contact-direct-title {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 24px;
  border-bottom: 2px solid rgba(255, 255, 255, 0.2);
  padding-bottom: 12px;
}

.direct-info-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.direct-info-item {
  display: flex;
  flex-direction: column;
}

.direct-info-label {
  font-size: 0.8rem;
  color: #94A3B8;
  text-transform: uppercase;
  font-weight: 700;
}

.direct-info-val {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-top: 2px;
}

/* 14. Footer */
.site-footer {
  background: var(--secondary-blue);
  color: #94A3B8;
  padding: 60px 0 30px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand {
  font-size: 1.3rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}

.footer-info-p {
  font-size: 0.9rem;
  line-height: 1.8;
  color: #CBD5E1;
}

.footer-bottom {
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
  color: #64748B;
}

/* 15. Responsive Media Queries */
@media (max-width: 992px) {
  .hero-grid, .about-grid, .location-grid, .contact-grid, .equipment-grid {
    grid-template-columns: 1fr;
  }
  .badges-grid, .cases-grid {
    grid-template-columns: 1fr;
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .nav-menu {
    display: none; /* Simplification for mobile view */
  }
}

@media (max-width: 640px) {
  .process-grid {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 1.8rem;
  }
}