/**
 * layout.css
 * Premium Editorial Layout — Full-Viewport Immersive
 */

/* ============================================
   전역 리셋 (Global Reset)
   ============================================ */

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

/* 스크롤바 스타일링 — Minimal */
::-webkit-scrollbar {
  width: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(201, 169, 110, 0.3);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(201, 169, 110, 0.5);
}

* {
  scrollbar-width: thin;
  scrollbar-color: rgba(201, 169, 110, 0.3) transparent;
}


/* ============================================
   HTML 기본 설정
   ============================================ */

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


/* ============================================
   Body — Deep Noir Canvas
   ============================================ */

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;

  padding: 0;

  /* Background — Deep Noir with subtle noise */
  background-color: var(--color-bg-primary);

  color: var(--color-text-primary);

  overflow-x: hidden;
  overflow-y: auto;

  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;

  position: relative;
}

/* Ambient Light — Subtle warm glow */
body::before {
  content: '';
  position: fixed;
  top: -20%;
  right: -15%;
  width: 60vw;
  height: 60vw;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201, 169, 110, 0.06) 0%, transparent 70%);
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
  animation: ambient-drift 30s ease-in-out infinite alternate;
}

body::after {
  content: '';
  position: fixed;
  bottom: -20%;
  left: -15%;
  width: 50vw;
  height: 50vw;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.03) 0%, transparent 70%);
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
  animation: ambient-drift-2 35s ease-in-out infinite alternate;
}

@keyframes ambient-drift {
  0% {
    transform: translate(0, 0) scale(1);
  }

  100% {
    transform: translate(-5%, 10%) scale(1.1);
  }
}

@keyframes ambient-drift-2 {
  0% {
    transform: translate(0, 0) scale(1);
  }

  100% {
    transform: translate(8%, -5%) scale(0.9);
  }
}


/* ============================================
   메인 컨테이너 — Full Viewport Wrapper
   ============================================ */

.container {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 100%;
  padding: 0;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: none;
  border-radius: 0;
  box-shadow: none;
  text-align: left;
  animation: page-entrance 1s var(--ease-out);
  overflow: visible;
}

@keyframes page-entrance {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

/* Remove container pseudo-element decorations */
.container::before,
.container::after {
  display: none;
}


/* ============================================
   섹션 시스템 — Editorial Sections
   ============================================ */

.section {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding: var(--spacing-2xl) var(--container-padding);
  animation: section-reveal 0.8s var(--ease-out);
}

.section:last-child {
  margin-bottom: 0;
}

/* Hero Section — Full Viewport */
.section--hero {
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--nav-height) var(--container-padding) var(--spacing-2xl);
  position: relative;
}

@keyframes section-reveal {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scroll reveal class — applied via JS */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

/* 섹션 구분선 — Minimal */
.section-divider {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  height: 1px;
  background: linear-gradient(90deg,
      transparent 0%,
      var(--color-border-light) 30%,
      var(--color-border-light) 70%,
      transparent 100%);
  opacity: 0.5;
}


/* ============================================
   Workflow Wrapper — Centered Content
   ============================================ */

.grid.grid--1-col {
  width: 100%;
  max-width: var(--container-narrow);
  margin-left: auto;
  margin-right: auto;
  padding: 0 var(--container-padding);
}


/* ============================================
   그리드 시스템
   ============================================ */

.grid {
  display: grid;
  gap: var(--spacing-lg);
}

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

.grid--3-cols {
  grid-template-columns: repeat(3, 1fr);
}

.grid--auto-fit {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* 그리드 아이템 애니메이션 */
.grid>* {
  animation: grid-item-entrance 0.6s var(--ease-out);
  animation-fill-mode: both;
}

.grid>*:nth-child(1) {
  animation-delay: 0.1s;
}

.grid>*:nth-child(2) {
  animation-delay: 0.2s;
}

.grid>*:nth-child(3) {
  animation-delay: 0.3s;
}

.grid>*:nth-child(4) {
  animation-delay: 0.4s;
}

@keyframes grid-item-entrance {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}


/* ============================================
   Flexbox 유틸리티
   ============================================ */

.flex {
  display: flex;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.flex-wrap {
  flex-wrap: wrap;
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

.gap-xl {
  gap: var(--spacing-xl);
}


/* ============================================
   여백 유틸리티 (Spacing Utilities)
   ============================================ */

.mt-0 {
  margin-top: 0;
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mt-xl {
  margin-top: var(--spacing-xl);
}

.mb-0 {
  margin-bottom: 0;
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.p-0 {
  padding: 0;
}

.p-sm {
  padding: var(--spacing-sm);
}

.p-md {
  padding: var(--spacing-md);
}

.p-lg {
  padding: var(--spacing-lg);
}

.p-xl {
  padding: var(--spacing-xl);
}


/* ============================================
   가시성 유틸리티
   ============================================ */

.hidden {
  display: none !important;
}

.invisible {
  visibility: hidden;
  opacity: 0;
}

.fade-in {
  animation: fade-in 0.6s var(--ease-out);
}

@keyframes fade-in {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

.fade-out {
  animation: fade-out 0.5s var(--ease-out);
}

@keyframes fade-out {
  from {
    opacity: 1;
  }

  to {
    opacity: 0;
  }
}

.slide-up {
  animation: slide-up 0.6s var(--ease-out);
}

@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}


/* ============================================
   반응형 브레이크포인트
   ============================================ */

@media (max-width: 768px) {
  body {
    padding: 0;
  }

  .section {
    padding: var(--spacing-xl) var(--container-padding-mobile);
  }

  .grid.grid--1-col {
    padding: 0 var(--container-padding-mobile);
  }

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

  .section--hero {
    min-height: 80vh;
    padding: var(--nav-height) var(--container-padding-mobile) var(--spacing-xl);
  }
}

@media (max-width: 480px) {
  .section {
    padding: var(--spacing-lg) var(--spacing-md);
  }

  .grid.grid--1-col {
    padding: 0 var(--spacing-md);
  }

  .section--hero {
    min-height: 70vh;
    padding: var(--nav-height) var(--spacing-md) var(--spacing-lg);
  }
}

@media (max-width: 360px) {
  html {
    font-size: 14px;
  }
}


/* ============================================
   와이드 스크린 (1200px 이상)
   ============================================ */

@media (min-width: 1200px) {
  .section {
    padding: var(--spacing-3xl) var(--container-padding);
  }
}


/* ============================================
   접근성
   ============================================ */

@media (prefers-contrast: high) {
  body {
    background: #000000;
  }
}

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  body,
  body::before,
  body::after {
    animation: none;
  }
}


/* ============================================
   프린트 스타일
   ============================================ */

@media print {
  body {
    background: #ffffff;
    padding: 0;
  }

  body::before,
  body::after {
    display: none;
  }

  .container {
    max-width: 100%;
    box-shadow: none;
    border: none;
    background: #ffffff;
  }

  .hidden-print {
    display: none !important;
  }
}


/* ============================================
   로딩 오버레이
   ============================================ */

.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(11, 11, 13, 0.95);
  backdrop-filter: blur(10px);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.loading-overlay.active {
  display: flex;
}