/* =====================================================
   Silversmith — Shared Design System
   ===================================================== */

/* === CSS Variables === */
:root {
  /* Brand Colors */
  --clr-bg: #080d1a;
  --clr-bg-card: #0e1628;
  --clr-bg-card2: #111c35;
  --clr-border: rgba(148, 163, 210, 0.12);
  --clr-border-glow: rgba(148, 163, 210, 0.28);

  /* Silver Gradient */
  --grad-silver: linear-gradient(135deg, #c8cdd6 0%, #e8ecf4 40%, #a8b0c0 70%, #d0d8e8 100%);
  /* Gold Accent */
  --grad-gold: linear-gradient(135deg, #c89b3c 0%, #f5d87a 50%, #c89b3c 100%);
  /* Blue Glow */
  --clr-accent: #3d7fff;
  --clr-accent2: #60a5fa;

  /* Text */
  --clr-text: #d4daf0;
  --clr-text-muted: #8896b8;
  --clr-text-dim: #4a567a;

  /* Typography */
  --font-sans: 'Pretendard', 'Noto Sans KR', 'Inter', sans-serif;
  --font-serif: 'Playfair Display', 'Noto Serif KR', serif;

  /* Spacing */
  --section-py: clamp(5rem, 10vw, 8rem);
  --container-w: 1200px;
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-full: 9999px;

  /* Shadow */
  --shadow-card: 0 4px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 60px rgba(61, 127, 255, 0.12);
}

/* === Reset & Base === */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--clr-bg);
  color: var(--clr-text);
  font-family: var(--font-sans);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

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

ul,
ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1.2;
  font-weight: 700;
}

/* === Utility === */
.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2rem);
}

.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2rem);
}

.accent-silver {
  background: var(--grad-silver);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.accent-gold {
  background: var(--grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Reveal animation base */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.reveal-delay-1 {
  transition-delay: 0.1s;
}

.reveal-delay-2 {
  transition-delay: 0.2s;
}

.reveal-delay-3 {
  transition-delay: 0.3s;
}

/* === Navigation === */
#main-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem clamp(1.25rem, 4vw, 2.5rem);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(8, 13, 26, 0.88);
  border-bottom: 1px solid var(--clr-border);
  transition: background 0.3s;
}

#main-nav.scrolled {
  background: rgba(8, 13, 26, 0.97);
  box-shadow: 0 2px 24px rgba(0, 0, 0, 0.4);
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: var(--grad-silver);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  flex-shrink: 0;
}

.nav-logo span {
  background: var(--grad-gold);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Desktop nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-links a {
  color: var(--clr-text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 0.875rem;
  border-radius: var(--radius-full);
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--clr-text);
  background: rgba(255, 255, 255, 0.06);
}

/* Desktop Dropdown Group */
.nav-group {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.nav-group>a {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
}

/* Dropdown Content */
.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: rgba(13, 17, 30, 0.95);
  backdrop-filter: blur(12px);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 0.5rem;
  min-width: 180px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease-out;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  pointer-events: none;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

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

.nav-dropdown a {
  display: block;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  text-align: left;
}

.nav-dropdown a:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--clr-text);
}

.nav-links .btn-nav {
  background: linear-gradient(135deg, #2563eb, #3d7fff);
  color: #fff !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  transition: opacity 0.2s, transform 0.2s !important;
}

.nav-links .btn-nav:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 4px;
  z-index: 600;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: all 0.3s;
}

.nav-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile menu overlay */
.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 550;
  background: rgba(8, 13, 26, 0.97);
  backdrop-filter: blur(12px);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
}

.nav-overlay.open {
  display: flex;
}

.nav-overlay a {
  color: var(--clr-text);
  font-size: 1.3rem;
  font-weight: 600;
  padding: 0.5rem 2rem;
  border-radius: var(--radius-full);
  transition: background 0.2s;
  text-align: center;
  display: block;
}

.nav-overlay a:hover {
  background: rgba(255, 255, 255, 0.07);
}

/* Mobile Accordion */
.nav-acc-btn {
  background: none;
  border: none;
  color: var(--clr-text);
  font-size: 1.3rem;
  font-weight: 600;
  padding: 0.5rem 2rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  transition: background 0.2s;
}

.nav-acc-btn:hover {
  background: rgba(255, 255, 255, 0.07);
}

.nav-acc-btn svg {
  transition: transform 0.2s;
}

.nav-acc-btn.open svg {
  transform: rotate(180deg);
}

.nav-acc-items {
  max-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  transition: max-height 0.3s ease-in-out;
}

.nav-acc-items a {
  font-size: 1.05rem;
  color: var(--clr-text-muted);
  padding: 0.3rem 1.5rem;
}

.nav-acc-items a:hover {
  color: var(--clr-text);
}

.nav-overlay .btn-nav-mobile {
  background: linear-gradient(135deg, #2563eb, #3d7fff);
  color: #fff !important;
  font-weight: 700;
  font-size: 1.1rem;
  padding: 0.75rem 2.5rem;
}

/* === Section Commons === */
.section {
  padding: var(--section-py) 0;
  position: relative;
}

.section-eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-accent2);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.section-desc {
  color: var(--clr-text-muted);
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
  max-width: 600px;
  line-height: 1.75;
}

.section-header {
  text-align: center;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-header .section-desc {
  margin: 0 auto;
}

/* === Cards === */
.card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
}

.card:hover {
  border-color: var(--clr-border-glow);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.95rem;
  transition: all 0.25s;
  border: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #3d7fff);
  color: #fff;
  box-shadow: 0 4px 20px rgba(61, 127, 255, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(61, 127, 255, 0.45);
}

.btn-outline {
  background: transparent;
  color: var(--clr-text);
  border: 1.5px solid var(--clr-border-glow);
}

.btn-outline:hover {
  border-color: var(--clr-accent2);
  background: rgba(61, 127, 255, 0.08);
}

.btn-gold {
  background: var(--grad-gold);
  color: #1a1000;
  font-weight: 800;
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(200, 155, 60, 0.4);
}

/* === Breadcrumb === */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--clr-text-dim);
  margin-bottom: 1.5rem;
}

.breadcrumb a {
  color: var(--clr-text-muted);
  transition: color 0.2s;
}

.breadcrumb a:hover {
  color: var(--clr-text);
}

.breadcrumb-sep {
  color: var(--clr-text-dim);
}

/* === Tag / Badge === */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(61, 127, 255, 0.1);
  border: 1px solid rgba(61, 127, 255, 0.25);
  color: var(--clr-accent2);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
}

.tag-gold {
  background: rgba(200, 155, 60, 0.1);
  border-color: rgba(200, 155, 60, 0.3);
  color: #f5d87a;
}

/* === Page Hero (sub-pages) === */
.page-hero {
  min-height: 50vh;
  display: flex;
  align-items: center;
  padding: 8rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  top: -30%;
  left: -10%;
  width: 70%;
  height: 100%;
  background: radial-gradient(ellipse at top left, rgba(61, 127, 255, 0.1) 0%, transparent 60%);
  pointer-events: none;
}

.page-hero-eyebrow {
  margin-bottom: 1rem;
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  margin-bottom: 1.25rem;
  line-height: 1.1;
}

.page-hero p {
  color: var(--clr-text-muted);
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  max-width: 540px;
  line-height: 1.75;
}

/* === Grid Layouts === */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

/* === Service Card (main page) === */
.service-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad-silver);
  opacity: 0;
  transition: opacity 0.3s;
}

.service-card:hover::before {
  opacity: 1;
}

.service-card:hover {
  border-color: var(--clr-border-glow);
  box-shadow: var(--shadow-glow);
  transform: translateY(-5px);
}

.service-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.service-card p {
  color: var(--clr-text-muted);
  font-size: 0.9rem;
  line-height: 1.65;
  flex: 1;
}

.service-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--clr-accent2);
  font-size: 0.85rem;
  font-weight: 600;
  transition: gap 0.2s;
  margin-top: auto;
}

.service-card-link:hover {
  gap: 0.7rem;
}

/* === FAQ === */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq-item {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.3s;
}

.faq-item:hover {
  border-color: var(--clr-border-glow);
}

.faq-q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  background: none;
  border: none;
  color: var(--clr-text);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
}

.faq-chevron {
  transition: transform 0.3s;
  flex-shrink: 0;
  color: var(--clr-text-muted);
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
}

.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.faq-a p {
  padding: 0 1.5rem 1.25rem;
  color: var(--clr-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* === Footer === */
.footer {
  background: #050a14;
  border-top: 1px solid var(--clr-border);
  padding: 4rem 0 2rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-logo {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  background: var(--grad-silver);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.75rem;
  display: block;
}

.footer-tagline {
  color: var(--clr-text-muted);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.footer-social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid var(--clr-border);
  color: var(--clr-text-muted);
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.footer-social a:hover {
  border-color: var(--clr-border-glow);
  color: var(--clr-text);
  background: rgba(255, 255, 255, 0.05);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer-col h3 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text-muted);
  margin-bottom: 1rem;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-col a {
  color: var(--clr-text-muted);
  font-size: 0.875rem;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: var(--clr-text);
}

.footer-bottom {
  border-top: 1px solid var(--clr-border);
  padding-top: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.footer-copy {
  color: var(--clr-text-dim);
  font-size: 0.8rem;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
}

.footer-links a {
  color: var(--clr-text-dim);
  font-size: 0.8rem;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--clr-text-muted);
}

/* === Decorative elements === */
.blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  opacity: 0.18;
}

.blob-blue {
  background: #1d4ed8;
}

.blob-silver {
  background: #94a3b8;
}

.blob-gold {
  background: #a16207;
}

/* === Process Steps === */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.step-item {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  position: relative;
  transition: border-color 0.3s, transform 0.3s;
}

.step-item:hover {
  border-color: var(--clr-border-glow);
  transform: translateY(-4px);
}

.step-num {
  font-size: 2.5rem;
  font-weight: 900;
  line-height: 1;
  background: var(--grad-silver);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1rem;
  opacity: 0.35;
}

.step-item h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.step-item p {
  color: var(--clr-text-muted);
  font-size: 0.875rem;
  line-height: 1.65;
}

/* === CTA Section === */
.cta-section {
  background: linear-gradient(135deg, #0a1528 0%, #0e1e40 50%, #0a1528 100%);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
  padding: var(--section-py) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(61, 127, 255, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.cta-section h2 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}

.cta-section p {
  color: var(--clr-text-muted);
  margin-bottom: 2rem;
}

.cta-section .cta-btns {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* === Responsive === */
@media (max-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {

  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .footer-nav {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  /* Mobile nav */
  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .page-hero {
    padding: 7rem 0 3rem;
  }
}

@media (max-width: 480px) {
  .footer-nav {
    grid-template-columns: 1fr;
  }

  .cta-section .cta-btns {
    flex-direction: column;
    align-items: center;
  }
}

/* ============================================================
   ACCESSIBILITY — prefers-reduced-motion
   모션에 민감한 사용자를 위해 모든 애니메이션·트랜지션 비활성화.
   Lighthouse Accessibility 항목 및 WCAG 2.1 SC 2.3.3 대응.
   ============================================================ */
@media (prefers-reduced-motion: reduce) {

  /* 전역 애니메이션·트랜지션 제거 */
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  /* Reveal — 즉시 표시 (CLS 0, 크롤러/접근성 완전 대응) */
  .reveal {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }

  .reveal-delay-1,
  .reveal-delay-2,
  .reveal-delay-3 {
    transition-delay: 0s !important;
  }

  /* 부유 장식 orb·blob 고정 */
  .orb-1,
  .orb-2,
  .blob {
    animation: none !important;
  }

  /* 히어로 카드 스택 hover 효과 제거 */
  .hero-card-stack:hover .hc-1,
  .hero-card-stack:hover .hc-2,
  .hero-card-stack:hover .hc-3 {
    transform: translateX(-50%);
  }

  /* 스크롤 동작 */
  html {
    scroll-behavior: auto;
  }
}

/* ============================================================
   NO-JS FALLBACK — JS 미지원·비활성화 환경 (크롤러·SSR)
   .reveal 요소가 opacity:0으로 숨겨지지 않도록 보장.
   Googlebot fallback rendering 및 LLM 크롤러 완전 대응.
   ============================================================ */
:root:not(.js-enabled) .reveal {
  opacity: 1;
  transform: none;
  transition: none;
}

/* ============================================================
   FULL-PAGE SCROLL SNAP
   ============================================================ */

/* html / body는 고정 — 스크롤은 #scroll-container가 담당 */
html:has(body.home-page),
body.home-page {
  height: 100%;
  overflow: hidden;
}

/* 스크롤 컨테이너 */
body.home-page #scroll-container {
  height: 100vh;
  overflow-y: scroll;
  scroll-snap-type: y mandatory;
  /* scroll-behavior: smooth — CSS 애니메이션으로 부드럽게 */
}

/* full-page 스냅 섹션 (Hero ~ Projects) */
body.home-page .hero,
body.home-page .section {
  scroll-snap-align: start;
  scroll-snap-stop: always;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

/* Contact — 뷰포트 50% 높이, 스냅 유지 */
body.home-page .cta-section {
  scroll-snap-align: start;
  min-height: 50vh;
  height: 50vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

/* === SA/DA 광고 대행 섹션 === */

/* 상단 2열 히어로 */
.sada-hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-bottom: 3rem;
}

/* 왼쪽 카피 */
.sada-copy {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* 플랫폼 배지 행 */
.sada-platform-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.sada-platform-badge {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.9rem;
}

.sada-plat-type {
  font-size: 0.72rem;
  color: var(--clr-text-dim);
  border-left: 1px solid var(--clr-border);
  padding-left: 0.55rem;
  margin-left: 0.1rem;
}

/* 수치 스트립 */
.sada-stats {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.5rem;
}

.sada-stat {
  text-align: center;
  flex: 1;
}

.sada-stat-num {
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.15;
}

.sada-stat-label {
  font-size: 0.7rem;
  color: var(--clr-text-dim);
  margin-top: 0.2rem;
  white-space: nowrap;
}

.sada-stat-div {
  width: 1px;
  height: 36px;
  background: var(--clr-border);
  flex-shrink: 0;
}

/* 오른쪽 SVG 사이클 */
.sada-cycle-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.sada-cycle-svg {
  width: 100%;
  max-width: 280px;
  height: auto;
  filter: drop-shadow(0 0 20px rgba(61, 127, 255, 0.15));
}

/* SVG spinning animation */
@keyframes sada-spin {
  from {
    transform: rotate(0deg);
  }

  to {
    transform: rotate(360deg);
  }
}

.sada-cycle-svg circle:first-of-type {
  transform-origin: 160px 160px;
  animation: sada-spin 30s linear infinite;
}

.sada-cycle-caption {
  font-size: 0.72rem;
  color: var(--clr-text-dim);
  letter-spacing: 0.04em;
  text-align: center;
}

/* 하단: 프로세스 플로우 */
.sada-flow {
  display: flex;
  align-items: center;
  gap: 0;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2rem;
  overflow-x: auto;
}

.sada-flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.55rem;
  flex: 1;
  min-width: 80px;
}

.sada-flow-node {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1.5px solid;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: transform 0.25s, box-shadow 0.25s;
}

.sada-flow-step:hover .sada-flow-node {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.sada-flow-label {
  font-size: 0.72rem;
  color: var(--clr-text-muted);
  text-align: center;
  line-height: 1.45;
  font-weight: 600;
}

.sada-flow-arrow {
  color: var(--clr-text-dim);
  font-size: 1rem;
  flex-shrink: 0;
  padding: 0 0.25rem;
}

/* 반응형 */
@media (max-width: 1024px) {
  .sada-hero {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .sada-cycle-wrap {
    order: -1;
  }

  .sada-cycle-svg {
    max-width: 260px;
  }
}

@media (max-width: 640px) {
  .sada-stats {
    gap: 0.75rem;
    padding: 0.85rem 1rem;
  }

  .sada-stat-num {
    font-size: 1.1rem;
  }

  .sada-flow {
    padding: 1rem;
    gap: 0;
  }

  .sada-flow-node {
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }

  .sada-flow-label {
    font-size: 0.65rem;
  }
}


/* footer는 마지막 섹션에 포함 (별도 스냅 없음) */

/* ============================================================
   SECTION PAGINATION DOTS (우측 고정)
   ============================================================ */
#section-nav {
  position: fixed;
  right: 1.5rem;
  top: 50%;
  transform: translateY(-50%);
  z-index: 400;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
}

.sn-dot {
  position: relative;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  border: 1.5px solid rgba(255, 255, 255, 0.35);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  display: block;
}

.sn-dot::after {
  content: attr(data-label);
  position: absolute;
  right: calc(100% + 0.75rem);
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  white-space: nowrap;
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

#section-nav:hover .sn-dot::after,
.sn-dot:hover::after {
  opacity: 1;
}

.sn-dot.active {
  background: #fff;
  border-color: #fff;
  transform: scale(1.5);
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.4);
}

.sn-dot:hover:not(.active) {
  background: rgba(255, 255, 255, 0.5);
  border-color: rgba(255, 255, 255, 0.7);
}

/* 모바일에서 dot 숨김 (화면 공간 부족) */
@media (max-width: 768px) {
  #section-nav {
    right: 0.75rem;
    gap: 0.55rem;
  }

  .sn-dot {
    width: 6px;
    height: 6px;
  }

  .sn-dot::after {
    display: none;
  }
}

/* ============================================================
   SECTION 공통 — 가독성 & 여백 개선
   ============================================================ */
:root {
  --section-py: clamp(2.5rem, 6vw, 4.5rem);
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.035em;
  margin-bottom: 1rem;
}

.section-desc {
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  line-height: 1.85;
  color: var(--clr-text-muted);
}

.section-header {
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

/* ============================================================
   CONTACT PAGE — 폼 공통 스타일
   ============================================================ */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 540px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  letter-spacing: 0.04em;
}

.form-control {
  background: var(--clr-bg-card);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  padding: 0.75rem 1rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
}

.form-control:focus {
  outline: none;
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(61, 127, 255, 0.15);
}

.form-control::placeholder {
  color: var(--clr-text-dim);
}

textarea.form-control {
  resize: vertical;
  min-height: 140px;
  line-height: 1.7;
}

select.form-control {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238896b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* ============================================================
   STORY PAGE — 포스팅 리스트 공통 스타일
   ============================================================ */
.story-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
}

.story-card {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.3s;
  text-decoration: none;
  color: inherit;
}

.story-card:hover {
  border-color: var(--clr-border-glow);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

.story-card-thumb {
  height: 180px;
  background: linear-gradient(135deg, #0e1628, #1a2540);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.story-card-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 40%, rgba(8, 13, 26, 0.7));
}

.story-card-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.story-card-eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-accent2);
}

.story-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.02em;
}

.story-card-excerpt {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  line-height: 1.65;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.story-card-meta {
  font-size: 0.75rem;
  color: var(--clr-text-dim);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

/* ============================================================
   POST PAGE — 아티클 본문 공통 스타일
   ============================================================ */
.post-body {
  max-width: 720px;
  margin: 0 auto;
  font-size: clamp(1rem, 1.5vw, 1.075rem);
  line-height: 1.9;
  color: var(--clr-text);
}

.post-body h2 {
  font-size: clamp(1.35rem, 2.5vw, 1.7rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 2.5rem 0 1rem;
  color: var(--clr-text);
}

.post-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 1.75rem 0 0.75rem;
  color: var(--clr-text);
}

.post-body p {
  color: var(--clr-text-muted);
  margin-bottom: 1.25rem;
}

.post-body strong {
  color: var(--clr-text);
  font-weight: 700;
}

.post-body ul,
.post-body ol {
  list-style: disc;
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
  color: var(--clr-text-muted);
}

.post-body ol {
  list-style: decimal;
}

.post-body li {
  margin-bottom: 0.5rem;
  line-height: 1.75;
}

.post-body blockquote {
  border-left: 3px solid var(--clr-accent);
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  background: rgba(61, 127, 255, 0.05);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--clr-text-muted);
  font-style: italic;
}

.post-body .callout {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
}

.post-divider {
  border: none;
  border-top: 1px solid var(--clr-border);
  margin: 2.5rem 0;
}

/* 포스트 페이지 — overflow는 서브페이지에서 reset */
.post-page html,
.post-page body {
  overflow: auto;
  height: auto;
}