/* ==========================================================================
   base — reset · 레이아웃 · 그레인 · 커서 · 스크롤 프로그레스 · placeholder
   · 버튼 · 키네틱 유틸 · reduced-motion
   ========================================================================== */

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

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

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  overflow-x: hidden;
  min-height: 100vh;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}
ul,
ol {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
}

/* --- 그레인 (시네마틱 분위기) --- */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: var(--z-grain);
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 320 320' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* --- 스크롤 프로그레스 바 --- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: var(--gold);
  z-index: var(--z-progress);
  will-change: transform;
}

/* --- 커스텀 커서 --- */
.cursor,
.cursor-ring {
  position: fixed;
  top: 0;
  left: 0;
  border-radius: 50%;
  pointer-events: none;
  z-index: var(--z-cursor);
  mix-blend-mode: difference;
  opacity: 0;
  transition: opacity var(--dur) ease;
}
.cursor {
  width: 7px;
  height: 7px;
  background: #fff;
  transform: translate(-50%, -50%);
}
.cursor-ring {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  transform: translate(-50%, -50%);
  transition: opacity var(--dur) ease, width var(--dur) var(--ease-expo),
    height var(--dur) var(--ease-expo);
}
body.has-cursor .cursor,
body.has-cursor .cursor-ring {
  opacity: 1;
}
body.has-cursor,
body.has-cursor a,
body.has-cursor button,
body.has-cursor input,
body.has-cursor select,
body.has-cursor textarea {
  cursor: none;
}
body.cursor-hover .cursor-ring {
  width: 64px;
  height: 64px;
  border-color: var(--gold);
}

/* --- 레이아웃 --- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.container-narrow {
  max-width: var(--container-narrow);
}
.container-wide {
  max-width: var(--container-wide);
}
.section {
  position: relative;
  padding-block: var(--space-section);
}
.section--paper {
  background: var(--paper);
}
.section--paper-2 {
  background: var(--paper-2);
}

/* --- 시네마틱 다크 + radial 미광 --- */
.section--cine {
  position: relative;
  background: var(--ink-950);
  color: var(--white);
  overflow: hidden;
}
.section--cine::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
      ellipse 60% 50% at 15% 90%,
      rgba(200, 162, 74, 0.12),
      transparent 60%
    ),
    radial-gradient(
      ellipse 50% 40% at 85% 10%,
      rgba(46, 90, 139, 0.1),
      transparent 60%
    );
  pointer-events: none;
}
.section--cine > * {
  position: relative;
  z-index: 1;
}

/* --- 미디어 플레이스홀더 (이미지/영상 자리) --- */
.placeholder {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  border: 1.5px dashed var(--gray-300);
  border-radius: var(--radius-card);
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 14px,
    rgba(0, 0, 0, 0.018) 14px,
    rgba(0, 0, 0, 0.018) 28px
  );
  color: var(--color-text-muted);
  overflow: hidden;
}
.placeholder__label {
  padding: 1rem 1.25rem;
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  line-height: 1.7;
  max-width: 34ch;
}
.placeholder__label strong {
  display: block;
  font-family: var(--font-serif);
  font-size: var(--text-sm);
  color: var(--gold-dark);
  margin-bottom: 0.35rem;
}
/* 다크 위 플레이스홀더 */
.placeholder--dark {
  border-color: rgba(255, 255, 255, 0.22);
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 14px,
    rgba(255, 255, 255, 0.03) 14px,
    rgba(255, 255, 255, 0.03) 28px
  );
  color: rgba(255, 255, 255, 0.6);
}
.placeholder--dark .placeholder__label strong {
  color: var(--gold);
}
/* 히어로: 라벨을 우하단 코너로 (헤드라인과 겹치지 않게) */
.placeholder--hero {
  align-items: flex-end;
  justify-content: flex-end;
}
.placeholder--hero .placeholder__label {
  max-width: 26ch;
  text-align: right;
  margin: 0 clamp(1rem, 4vw, 4rem) clamp(7rem, 16vw, 11rem) 0;
  background: rgba(11, 11, 18, 0.45);
  border-radius: 6px;
  backdrop-filter: blur(2px);
}

/* --- 버튼 --- */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1.05rem 2.4rem;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: var(--text-body);
  transition: transform var(--dur) var(--ease-expo),
    background-color var(--dur) var(--ease-expo),
    color var(--dur) var(--ease-expo), box-shadow var(--dur) var(--ease-expo);
  will-change: transform;
}
.btn-gold {
  background: var(--gold);
  color: var(--ink-950);
  box-shadow: var(--shadow-glow);
}
.btn-gold:hover {
  background: #d8b25c;
}
.btn-solid {
  background: var(--ink-950);
  color: #fff;
}
.btn-solid:hover {
  background: var(--ink-800);
}
.btn-ghost {
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: #fff;
}
.btn-ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}
.btn-ghost-dark {
  border: 1px solid var(--gray-300);
  color: var(--paper-ink);
}
.btn-ghost-dark:hover {
  border-color: var(--gold-dark);
  color: var(--gold-dark);
}
.btn .arrow {
  transition: transform var(--dur) var(--ease-expo);
}
.btn:hover .arrow {
  transform: translateX(5px);
}

/* --- 키네틱 유틸 --- */
[data-parallax] {
  will-change: transform;
}

/* word-reveal */
.word {
  display: inline-block;
  overflow: hidden;
  vertical-align: top;
}
.word__inner {
  display: inline-block;
  transform: translateY(110%);
  transition: transform var(--dur-slow) var(--ease-expo);
  transition-delay: var(--wd, 0ms);
}
.is-revealed .word__inner {
  transform: translateY(0);
}

/* fade-reveal */
[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity var(--dur-slow) var(--ease-soft),
    transform var(--dur-slow) var(--ease-soft);
  transition-delay: var(--rd, 0ms);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --- reduced motion --- */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
  .word__inner {
    transform: none;
  }
  .cursor,
  .cursor-ring {
    display: none;
  }
}
@media (hover: none) {
  .cursor,
  .cursor-ring {
    display: none;
  }
}