/* ==============================================
   GLASST — Light Minimal Design System
   Inspired by fluid.glass / Architectural Precision
   ============================================== */

/* ===== CSS Variables ===== */
:root {
  /* 컬러 — 라이트 미니멀 */
  --color-bg: #ffffff;
  --color-bg-alt: #f7f7f5;
  --color-bg-warm: #f2f0ec;
  --color-surface: #fafafa;
  --color-border: #e5e5e0;
  --color-border-light: #eeeeea;
  --color-text: #1a1a1a;
  --color-text-secondary: #555555;
  --color-text-muted: #999999;
  --color-text-dim: #bbbbbb;
  --color-accent: #1a1a1a;
  --color-white: #ffffff;
  --color-black: #0a0a0a;

  /* 타이포그래피 */
  --font-display: 'Michroma', sans-serif;
  --font-main: 'Rajdhani', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.75rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3rem;
  --font-size-hero: clamp(3.5rem, 9vw, 7rem);

  /* 간격 */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 5rem;
  --space-3xl: 8rem;
  --space-4xl: 12rem;

  /* 기타 */
  --radius: 0;
  --transition: 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --header-height: 90px;
  --max-width: 1400px;
}


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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-main);
  font-size: var(--font-size-base);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 4rem);
}


/* ===== 스크롤 애니메이션 ===== */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1s ease, transform 1s ease;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}


/* ==============================================
   HEADER / NAV
   ============================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: transparent;
  transition: all var(--transition);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border-light);
}

.nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.5rem, 4vw, 4rem);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  position: relative;
  transition: opacity var(--transition);
}

.nav-logo:hover {
  opacity: 0.5;
}

.nav-logo-img {
  height: 40px;
  width: auto;
  transition: opacity var(--transition);
}

/* 기본 상태 (히어로 위): 흰색 로고 보임, 검정 숨김 */
.nav-logo-white {
  opacity: 1;
}

.nav-logo-dark {
  opacity: 0;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
}

/* 스크롤 후: 검정 로고 보임, 흰색 숨김 */
.site-header.scrolled .nav-logo-white {
  opacity: 0;
}

.site-header.scrolled .nav-logo-dark {
  opacity: 1;
}

.nav-menu {
  list-style: none;
  display: flex;
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.nav-link {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: color var(--transition);
}

.nav-link:hover {
  color: #ffffff;
}

.site-header.scrolled .nav-link {
  color: var(--color-text-secondary);
}

.site-header.scrolled .nav-link:hover {
  color: var(--color-text);
}

/* 드롭다운 메뉴 */
.nav-dropdown {
  position: relative;
}

/* ===== 메가 메뉴 (3열 카테고리) ===== */
.mega-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 0;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border-light);
  min-width: 680px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  transform: translateX(-50%) translateY(8px);
  z-index: 1001;
}

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

.mega-col {
  padding: 1.5rem;
  border-right: 1px solid var(--color-border-light);
}

.mega-col:last-child {
  border-right: none;
}

.mega-col ul {
  list-style: none;
}

.mega-title {
  display: block;
  font-family: var(--font-display);
  font-size: 0.625rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border-light);
  transition: color 0.3s ease;
  text-decoration: none;
}

.mega-title:hover {
  color: var(--color-text);
}

.mega-title:hover .dd-en {
  display: none;
}

.mega-title:hover .dd-kr {
  display: inline;
}

.mega-col ul li a {
  display: block;
  padding: 0.4rem 0;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.mega-col ul li a:hover {
  color: var(--color-text);
  padding-left: 0.5rem;
}

.mega-more {
  margin-top: 0.5rem;
  color: var(--color-text-muted) !important;
  font-style: italic;
}

/* 영어/한글 전환 */
.dd-en {
  display: inline;
}

.dd-kr {
  display: none;
}

.mega-col ul li a:hover .dd-en {
  display: none;
}

.mega-col ul li a:hover .dd-kr {
  display: inline;
}

/* 기존 dropdown-menu 하위 호환 (상세 페이지용) */
.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  list-style: none;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-border-light);
  padding: var(--space-sm) 0;
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
  transform: translateX(-50%) translateY(8px);
  z-index: 1001;
}

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

.dropdown-menu li a {
  display: block;
  padding: 0.6rem 1.5rem;
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
  transition: all 0.3s ease;
  white-space: nowrap;
}

.dropdown-menu li a:hover {
  color: var(--color-text);
  padding-left: 1.8rem;
}

.dropdown-menu li a:hover .dd-en {
  display: none;
}

.dropdown-menu li a:hover .dd-kr {
  display: inline;
}

/* 햄버거 메뉴 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: #ffffff;
  transition: all 0.3s ease;
}

.site-header.scrolled .nav-toggle span {
  background: var(--color-text);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
}


/* ==============================================
   HERO
   ============================================== */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  justify-content: flex-start;
  padding: 0 clamp(1.5rem, 4vw, 4rem);
  padding-bottom: clamp(3rem, 8vh, 6rem);
  padding-top: var(--header-height);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../IMAGE/GLASST Main.png');
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(0, 0, 0, 0.7) 0%,
    rgba(0, 0, 0, 0.3) 40%,
    rgba(0, 0, 0, 0.15) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero-label {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: var(--space-lg);
}

.hero-title {
  font-family: var(--font-display);
  font-size: var(--font-size-hero);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #ffffff;
  margin-bottom: var(--space-xl);
}

.text-accent {
  font-weight: 300;
  color: inherit;
  -webkit-text-fill-color: initial;
  background: none;
  -webkit-background-clip: initial;
  background-clip: initial;
  font-style: italic;
}

.hero-desc {
  font-size: 1.0625rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.9;
  margin-bottom: var(--space-xl);
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

/* 히어로 버튼 (어두운 배경 위) */
.hero .btn-primary {
  background: #ffffff;
  color: var(--color-black);
}

.hero .btn-primary:hover {
  background: rgba(255, 255, 255, 0.85);
}

.hero .btn-outline {
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.4);
}

.hero .btn-outline:hover {
  border-color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
}

/* 스크롤 인디케이터 */
.hero-scroll {
  position: fixed;
  bottom: 2rem;
  right: clamp(1.5rem, 4vw, 4rem);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  z-index: 100;
}

.hero-scroll span {
  font-size: 0.625rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  writing-mode: vertical-rl;
}

.scroll-line {
  width: 1px;
  height: 48px;
  background: var(--color-border);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-text);
  animation: scrollDown 2.5s ease-in-out infinite;
}

@keyframes scrollDown {
  0% { top: -100%; }
  50% { top: 100%; }
  100% { top: 100%; }
}


/* ==============================================
   BUTTONS
   ============================================== */

.btn {
  font-family: var(--font-display);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  /* Buttons slightly larger than nav for clickability, but proportional */
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
}

.btn-primary {
  background: var(--color-black);
  color: var(--color-white);
}

.btn-primary:hover {
  background: var(--color-text-secondary);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-text);
}

.btn-full {
  width: 100%;
}


/* ==============================================
   SECTIONS (공통)
   ============================================== */

.section {
  padding: var(--space-4xl) 0;
}

.section-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-3xl);
}

.section-label {
  font-family: var(--font-display);
  /* Slightly larger than nav to establish visual hierarchy */
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.section-title {
  font-family: var(--font-display);
  /* Reduced from 3.5rem (font-size-4xl) to 2.75rem (font-size-3xl) for hierarchy */
  /* Creates clear distinction: Hero > Section > Subsections */
  font-size: 2.75rem;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.section-text {
  /* Maintains readability at 1rem body text */
  font-size: var(--font-size-base);
  font-weight: 300;
  color: var(--color-text-secondary);
  line-height: 1.9;
  max-width: 560px;
}


/* ==============================================
   ABOUT
   ============================================== */

/* About 2칼럼 레이아웃: 이미지 + 텍스트 */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-2xl);
  align-items: start;
}

.about-image {
  position: sticky;
  top: calc(var(--header-height) + 2rem);
}

.about-image img {
  width: 100%;
  height: auto;
  display: block;
}

.about-blocks {
  display: flex;
  flex-direction: column;
  gap: var(--space-3xl);
  max-width: 720px;
  margin-left: auto;
}

.about-block {
  position: relative;
}

.about-lead {
  /* Reduced from 1.375rem to 1.1875rem for better hierarchy */
  font-size: 1.1875rem;
  font-weight: 300;
  color: var(--color-text);
  line-height: 2;
}

.about-subtitle {
  font-family: var(--font-display);
  /* Slightly elevated from nav for subsection identity */
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: var(--space-md);
}

.about-highlight {
  font-family: var(--font-display);
  /* Reduced from 0.8125rem to 0.75rem for accent role */
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.about-block--accent {
  background: var(--color-bg-alt);
  border: none;
  border-radius: 0;
  padding: var(--space-xl);
  backdrop-filter: none;
  box-shadow: none;
}

.about-block--accent:hover {
  transform: none;
  box-shadow: none;
  border-color: transparent;
}

.about-cta-text {
  font-size: var(--font-size-base);
  font-weight: 300;
  color: var(--color-text-secondary);
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.about-block .section-text {
  max-width: 100%;
}


/* ==============================================
   PRODUCTS
   ============================================== */

/* 카테고리 구분 라벨 */
.category-label {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-text-dim);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-lg);
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.category-label:first-of-type {
  margin-top: 0;
}

.service-list {
  display: flex;
  flex-direction: column;
}

.service-item {
  display: grid;
  grid-template-columns: 48px 1fr 32px;
  gap: var(--space-lg);
  align-items: start;
  /* Reduced from space-xl (4rem) to space-lg (2rem) to tighten composition */
  padding: var(--space-lg) 0;
  border-top: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition);
}

.service-item:last-child {
  border-bottom: 1px solid var(--color-border);
}

.service-item:hover {
  padding-left: var(--space-sm);
}

.service-index {
  font-family: var(--font-display);
  /* Match nav sizing for consistency */
  font-size: 0.75rem;
  color: var(--color-text-muted);
  font-weight: 400;
  letter-spacing: 0.05em;
  padding-top: 0.3rem;
}

.service-name {
  font-family: var(--font-display);
  /* Reduced from 2rem (font-size-2xl) to 1.75rem for better hierarchy */
  /* Product names should be substantial but not compete with section titles */
  font-size: 1.75rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: color var(--transition);
}

.service-name-kr {
  /* Match adjusted nav sizing */
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  margin-top: 0.25rem;
  margin-bottom: 0.75rem;
}

.service-tagline {
  /* Reduced from 0.8125rem to 0.875rem for subtle emphasis */
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  font-style: italic;
}

.service-item:hover .service-name {
  color: var(--color-text-secondary);
}

.service-desc {
  /* Reduced from 0.8125rem to 0.875rem for readability */
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: var(--space-sm);
}

.service-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: var(--space-sm);
}

.service-point {
  /* Maintained at nav size for consistency */
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  padding: 0.3rem 0.75rem;
  transition: all var(--transition);
}

.service-item:hover .service-point {
  border-color: var(--color-text-muted);
}

.service-arrow {
  font-size: var(--font-size-lg);
  color: var(--color-text-dim);
  transition: all var(--transition);
  padding-top: 0.3rem;
}

.service-item:hover .service-arrow {
  color: var(--color-text);
  transform: translateX(4px);
}


/* ==============================================
   PROJECTS
   ============================================== */

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

.project-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: opacity var(--transition);
}

.project-grid:hover .project-card:not(:hover) {
  opacity: 0.4;
}

.project-image {
  aspect-ratio: 4 / 3;
  overflow: hidden;
}

.project-placeholder {
  width: 100%;
  height: 100%;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-dim);
  font-size: var(--font-size-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: transform 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.project-card:hover .project-placeholder {
  transform: scale(1.04);
}

.project-info {
  padding: var(--space-md) 0;
}

.project-category {
  font-family: var(--font-display);
  /* Match nav sizing for consistency */
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.project-title {
  font-family: var(--font-display);
  /* Reduced from 1.125rem (font-size-lg) to 1rem for proportion */
  font-size: 1rem;
  font-weight: 400;
  margin-top: 0.35rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.project-year {
  /* Match nav sizing */
  font-size: 0.75rem;
  color: var(--color-text-dim);
  margin-top: 0.2rem;
}


/* ==============================================
   PROCESS
   ============================================== */

.process-steps {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1px;
  background: var(--color-border);
}

.process-step {
  padding: var(--space-xl) var(--space-lg);
  background: var(--color-bg);
  transition: all var(--transition);
}

.process-step:hover {
  background: var(--color-bg-alt);
}

.step-number {
  font-family: var(--font-display);
  /* Match nav sizing */
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-text-dim);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xl);
}

.step-title {
  font-family: var(--font-display);
  /* Reduced from 1rem to 0.9375rem for process step hierarchy */
  font-size: 0.9375rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.step-desc {
  /* Reduced from 0.8125rem to 0.875rem */
  font-size: 0.875rem;
  font-weight: 300;
  color: var(--color-text-secondary);
  line-height: 1.8;
}


/* ==============================================
   CTA BANNER
   ============================================== */

.cta-banner {
  padding: var(--space-4xl) 0;
  text-align: center;
  background: var(--color-bg-alt);
}

.cta-title {
  font-family: var(--font-display);
  /* Reduced from 2.75rem (font-size-3xl) to 2.5rem for proportion */
  font-size: 2.5rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.cta-desc {
  /* Maintains readability at 1rem */
  font-size: var(--font-size-base);
  font-weight: 300;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
}


/* ==============================================
   CONTACT
   ============================================== */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-label {
  font-family: var(--font-display);
  /* Match nav sizing */
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 0.15rem;
}

.contact-value {
  font-size: var(--font-size-base);
  font-weight: 300;
  color: var(--color-text);
  transition: color var(--transition);
}

a.contact-value:hover {
  color: var(--color-text-secondary);
}

/* 폼 */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-family: var(--font-display);
  /* Match nav sizing for form consistency */
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.8rem 0;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition);
  font-weight: 300;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-bottom-color: var(--color-text);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-dim);
  font-weight: 300;
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' fill='%23999' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0 center;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
  border: 1px solid var(--color-border);
  padding: var(--space-sm);
}

.form-group textarea:focus {
  border-color: var(--color-text);
}

.form-group select option {
  background: var(--color-bg);
  color: var(--color-text);
}


/* ==============================================
   FOOTER
   ============================================== */

.site-footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-xl);
  align-items: start;
}

.footer-logo {
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.footer-logo-img {
  height: 48px;
  width: auto;
}

/* 컴팩트 푸터 */
.footer-compact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
}

.footer-logo-compact {
  height: 28px;
  width: auto;
  opacity: 0.5;
}

.footer-info {
  text-align: right;
  font-size: 0.6875rem;
  font-weight: 300;
  color: var(--color-text-dim);
  line-height: 1.8;
}

@media (max-width: 768px) {
  .footer-compact {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
  }
  .footer-info {
    text-align: left;
  }
}

.footer-tagline {
  font-size: var(--font-size-xs);
  font-weight: 300;
  color: var(--color-text-muted);
  margin-top: 0.35rem;
  font-style: italic;
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-links a {
  font-family: var(--font-display);
  /* Match nav sizing for consistency */
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color var(--transition);
}

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

.footer-legal {
  text-align: right;
  /* Match nav sizing for small text consistency */
  font-size: 0.75rem;
  font-weight: 300;
  color: var(--color-text-dim);
  line-height: 1.9;
}


/* ==============================================
   RESPONSIVE
   ============================================== */

@media (max-width: 1024px) {
  .section-grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .about-layout {
    grid-template-columns: 1fr;
  }

  .about-image {
    position: relative;
    top: auto;
  }

  .about-blocks {
    margin-left: 0;
  }

  .process-steps {
    grid-template-columns: repeat(4, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer-links {
    order: 2;
  }

  .footer-legal {
    text-align: left;
    order: 3;
  }
}

@media (max-width: 768px) {
  :root {
    --space-3xl: 6rem;
    --space-4xl: 8rem;
  }

  /* 모바일 메뉴 */
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--space-xl);
    gap: var(--space-lg);
    transform: translateX(100%);
    transition: transform 0.5s cubic-bezier(0.77, 0, 0.175, 1);
  }

  .nav-menu.active {
    transform: translateX(0);
  }

  .nav-link {
    font-size: var(--font-size-2xl);
    font-weight: 300;
    color: var(--color-text);
    text-transform: none;
    letter-spacing: -0.02em;
  }

  /* 히어로 */
  .hero {
    min-height: 85vh;
    align-items: flex-end;
  }

  .hero-title {
    font-size: clamp(2.5rem, 12vw, 4rem);
  }

  .hero-desc {
    font-size: var(--font-size-base);
  }

  .hero-scroll {
    display: none;
  }

  /* 서비스 */
  .service-item {
    grid-template-columns: 32px 1fr 24px;
    gap: var(--space-sm);
  }

  .service-name {
    font-size: var(--font-size-xl);
  }

  /* 프로젝트 */
  .project-grid {
    grid-template-columns: 1fr;
  }

  /* 프로세스 */
  .process-steps {
    grid-template-columns: 1fr;
  }

  /* 연락처 */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  /* 섹션 */
  .section-title {
    /* Reduced from var(--font-size-3xl) to 2rem for mobile hierarchy */
    font-size: 2rem;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .btn {
    width: 100%;
    text-align: center;
  }

  .footer-links {
    flex-wrap: wrap;
    gap: var(--space-sm);
  }
}