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

:root {
  --stone:        #c4b89a;
  --dark:         #1a110a;
  --cream:        #ece4d2;
  --text:         #d4c8a8;
  --muted:        #a09070;
  --mat:          #4e3620;
  --serif:        'Cormorant Garamond', Georgia, 'Times New Roman', serif;
  --ease-spring:  cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-out:     cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html {
  scroll-behavior: smooth;
}

html, body {
  width: 100%;
  font-family: var(--serif);
  color: var(--text);
}

body {
  background-color: #8c8070;
}

html:has(body.home-page),
body.home-page {
  height: 100vh;
  overflow: hidden;
}

/* 돌벽 SVG 텍스처 */
.wall-texture {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
}
.wall-texture svg {
  width: 100%;
  height: 100%;
  display: block;
}


/* ===== 고정 분위기 레이어 ===== */

.grain {
  position: fixed;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  opacity: 0.3;
  mix-blend-mode: multiply;
}
.grain svg { width: 100%; height: 100%; }

.vignette {
  position: fixed;
  inset: 0;
  z-index: 4;
  pointer-events: none;
  background: radial-gradient(ellipse at 50% 50%,
    transparent 38%,
    rgba(26, 17, 10, 0.55) 100%
  );
}

/* 상단·하단 그림자 */
body::before,
body::after {
  content: '';
  position: fixed;
  left: 0;
  right: 0;
  z-index: 4;
  pointer-events: none;
}
body::before {
  top: 0;
  height: 150px;
  background: linear-gradient(to bottom, rgba(26,17,10,0.6), transparent);
}
body::after {
  bottom: 0;
  height: 150px;
  background: linear-gradient(to top, rgba(26,17,10,0.5), transparent);
}


/* ===== 커튼 ===== */
.curtain {
  position: fixed;
  top: 0;
  height: 100vh;
  width: 240px;
  z-index: 6;
  pointer-events: none;
  transform-origin: top center;
}

/* 커튼 상단 봉 */
.curtain::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 16px;
  background: #241808;
  z-index: 1;
  box-shadow: 0 2px 8px rgba(0,0,0,0.5);
}

/* 커튼 하단 페이드 */
.curtain::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 130px;
  background: linear-gradient(to bottom, transparent, rgba(18,10,4,0.45));
}

/* 커튼 주름 — 명암 그라디언트로 표현 */
.curtain--left {
  left: 0;
  background: linear-gradient(90deg,
    #1e1408  0%,
    #3e2e1a  6%,
    #6a5438  13%,
    #3a2a14  20%,
    #5c4830  27%,
    #7e6848  35%,
    #4a3824  42%,
    #6a5438  50%,
    #3e2e1c  58%,
    #5a4630  66%,
    #7a6244  74%,
    #5c4830  82%,
    rgba(92,72,48,0.3) 92%,
    transparent 100%
  );
  animation: sway-left 7s ease-in-out infinite;
}

.curtain--right {
  right: 0;
  background: linear-gradient(270deg,
    #1e1408  0%,
    #3e2e1a  6%,
    #6a5438  13%,
    #3a2a14  20%,
    #5c4830  27%,
    #7e6848  35%,
    #4a3824  42%,
    #6a5438  50%,
    #3e2e1c  58%,
    #5a4630  66%,
    #7a6244  74%,
    #5c4830  82%,
    rgba(92,72,48,0.3) 92%,
    transparent 100%
  );
  animation: sway-right 8.5s ease-in-out infinite;
  animation-delay: -3.2s;
}

@keyframes sway-left {
  0%   { transform: skewX(0deg)    skewY(0deg); }
  28%  { transform: skewX(1.1deg)  skewY(0.25deg); }
  62%  { transform: skewX(-0.7deg) skewY(-0.15deg); }
  100% { transform: skewX(0deg)    skewY(0deg); }
}

@keyframes sway-right {
  0%   { transform: skewX(0deg)    skewY(0deg); }
  35%  { transform: skewX(-0.9deg) skewY(-0.2deg); }
  68%  { transform: skewX(0.6deg)  skewY(0.18deg); }
  100% { transform: skewX(0deg)    skewY(0deg); }
}


/* ===== 메뉴 버튼 ===== */
.menu-btn {
  position: fixed;
  top: 32px;
  right: 48px;
  z-index: 200;
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 4px;
}

.menu-btn span {
  display: block;
  width: 28px;
  height: 1px;
  background: var(--text);
  opacity: 0.75;
  transition: transform 0.4s ease, opacity 0.4s ease;
  transform-origin: center;
}

.menu-btn.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); opacity: 1; }
.menu-btn.open span:nth-child(2) { opacity: 0; }
.menu-btn.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); opacity: 1; }


/* ===== 풀스크린 메뉴 ===== */
.fullscreen-menu {
  position: fixed;
  inset: 0;
  z-index: 90;
  background: rgba(12, 7, 3, 0.97);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding-left: 12vw;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.5s ease;
}

.fullscreen-menu.open {
  opacity: 1;
  pointer-events: all;
}

.folder-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.folder-list li {
  overflow: hidden;
  transform: translateY(40px);
  opacity: 0;
  transition: transform 0.5s ease, opacity 0.5s ease;
}

.fullscreen-menu.open .folder-list li:nth-child(1) { transform: translateY(0); opacity: 1; transition-delay: 0.05s; }
.fullscreen-menu.open .folder-list li:nth-child(2) { transform: translateY(0); opacity: 1; transition-delay: 0.10s; }
.fullscreen-menu.open .folder-list li:nth-child(3) { transform: translateY(0); opacity: 1; transition-delay: 0.15s; }
.fullscreen-menu.open .folder-list li:nth-child(4) { transform: translateY(0); opacity: 1; transition-delay: 0.20s; }
.fullscreen-menu.open .folder-list li:nth-child(5) { transform: translateY(0); opacity: 1; transition-delay: 0.25s; }

.folder-list a {
  display: flex;
  align-items: baseline;
  gap: 24px;
  text-decoration: none;
  color: #c8bba0;
  font-family: var(--serif);
  font-weight: 300;
  font-size: clamp(34px, 5.8vw, 76px);
  letter-spacing: 0.04em;
  line-height: 1.2;
  opacity: 0.18;
  transition: opacity 0.3s ease;
}

.folder-list a:hover { opacity: 1; }

.folder-num {
  font-size: clamp(10px, 1.1vw, 13px);
  letter-spacing: 0.2em;
  color: #7a6a52;
  font-weight: 400;
  font-family: var(--serif);
}


/* ===== MAIN / HERO ===== */
main {
  position: fixed;
  inset: 0;
  z-index: 2;
}

.hero {
  position: absolute;
  bottom: 48px;
  left: 0;
  right: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none;
  user-select: none;
}

.hero__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  animation: fade-up 1.8s var(--ease-out) 0.4s both;
}

.hero__name {
  font-size: 12px;
  letter-spacing: 10px;
  color: var(--text);
  font-weight: 300;
  opacity: 0.72;
}

.hero__rule {
  width: 170px;
  height: 0.5px;
  background: #c8ba96;
  opacity: 0.32;
}

.hero__scroll {
  margin-top: 38px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  animation: fade-up 2s var(--ease-out) 1s both;
}

.hero__scroll span {
  font-size: 8px;
  letter-spacing: 5px;
  color: var(--muted);
  opacity: 0.48;
  font-family: var(--serif);
}

.hero__arrow {
  width: 1px;
  height: 30px;
  background: linear-gradient(to bottom, transparent, var(--muted));
  opacity: 0.4;
  position: relative;
  animation: scroll-pulse 2.4s ease-in-out infinite;
}

.hero__arrow::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%) rotate(45deg);
  width: 5px;
  height: 5px;
  border-right: 1px solid var(--muted);
  border-bottom: 1px solid var(--muted);
}

@keyframes scroll-pulse {
  0%, 100% { transform: scaleY(1);   opacity: 0.4; }
  50%       { transform: scaleY(0.5); opacity: 0.15; }
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: translateY(0); }
}


/* ===== 갤러리 ===== */
.gallery {
  position: absolute;
  inset: 0;
}


/* ===== 액자 래퍼 ===== */
.frame-wrapper {
  position: absolute;
}

/* 훅·와이어 */
.frame-wrapper::before {
  content: '';
  position: absolute;
  top: -52px;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, transparent, rgba(180,160,120,0.3));
  pointer-events: none;
}

/* 등장 애니메이션 */
.frame-wrapper {
  opacity: 0;
  transition:
    opacity  0.7s var(--ease-out),
    transform 1.1s var(--ease-spring);
}

.frame-wrapper.visible {
  opacity: 1;
}

/* 위치 */
.fw--1 { top: 20%; left: 50%; transform: translateX(-50%); }


/* ===== 기울기 + 흔들림 ===== */
.frame-tilt {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 15px;
}

.fw--1 .frame-tilt { animation: sway-1 6.2s  0.0s ease-in-out infinite; transform: rotate(-3deg); }
.fw--2 .frame-tilt { animation: sway-2 7.4s  0.9s ease-in-out infinite; transform: rotate(2deg);  }
.fw--3 .frame-tilt { animation: sway-3 5.8s  1.6s ease-in-out infinite; transform: rotate(-1.5deg); }
.fw--4 .frame-tilt { animation: sway-4 8.1s  0.4s ease-in-out infinite; transform: rotate(3deg);  }
.fw--5 .frame-tilt { animation: sway-5 6.7s  1.2s ease-in-out infinite; transform: rotate(-2deg); }

@keyframes sway-1 {
  0%,100% { transform: rotate(-3deg); }
  40%     { transform: rotate(-1.7deg); }
  72%     { transform: rotate(-3.8deg); }
}
@keyframes sway-2 {
  0%,100% { transform: rotate(2deg); }
  38%     { transform: rotate(3.3deg); }
  70%     { transform: rotate(1.2deg); }
}
@keyframes sway-3 {
  0%,100% { transform: rotate(-1.5deg); }
  42%     { transform: rotate(-0.4deg); }
  74%     { transform: rotate(-2.3deg); }
}
@keyframes sway-4 {
  0%,100% { transform: rotate(3deg); }
  36%     { transform: rotate(4.4deg); }
  68%     { transform: rotate(2.1deg); }
}
@keyframes sway-5 {
  0%,100% { transform: rotate(-2deg); }
  44%     { transform: rotate(-0.9deg); }
  76%     { transform: rotate(-2.8deg); }
}


/* ===== 액자 디자인 ===== */
.frame {
  position: relative;
  background: linear-gradient(
    135deg,
    #d2a864  0%,
    #eeca82  20%,
    #c49050  46%,
    #e8c876  70%,
    #be9858  100%
  );
  padding: 13px;
  box-shadow:
    3px 5px 20px rgba(26,17,10,0.48),
    8px 12px 42px rgba(26,17,10,0.28),
    inset 0 1px 0 rgba(255,224,148,0.22),
    inset 0 -1px 0 rgba(70,44,16,0.32);
}

.frame__mat {
  background: var(--mat);
  padding: 9px;
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.35);
}

.frame__canvas {
  background: linear-gradient(135deg, #ece4d0, #dcd2bc);
  position: relative;
  overflow: hidden;
}

.frame__canvas img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 1.4s ease;
}

.frame__canvas img.active {
  opacity: 1;
}

/* 캔버스 크기 */
.fw--1 .frame__canvas { width: 200px; height: 248px; }
.fw--2 .frame__canvas { width: 242px; height: 298px; }
.fw--3 .frame__canvas { width: 174px; height: 212px; }
.fw--4 .frame__canvas { width: 212px; height: 264px; }
.fw--5 .frame__canvas { width: 256px; height: 314px; }


/* ===== 액자 레이블 ===== */
.frame__label {
  display: block;
  text-decoration: none;
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 3px;
  font-weight: 300;
  font-family: var(--serif);
  opacity: 0.5;
  transition: opacity 0.35s ease, color 0.35s ease;
  text-align: center;
  pointer-events: all;
}

.frame__label:hover {
  opacity: 1;
  color: var(--text);
}


/* ===== 푸터 ===== */
.wall-footer {
  height: 22vh;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  user-select: none;
}

.footer-brand {
  font-size: 10px;
  letter-spacing: 8px;
  color: var(--text);
  opacity: 0.28;
  font-weight: 300;
  font-family: var(--serif);
}


/* ===== 접근성: 모션 감소 ===== */
@media (prefers-reduced-motion: reduce) {
  .frame-wrapper {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .frame-tilt  { animation: none !important; }
  .curtain     { animation: none; }
  .hero__arrow { animation: none; }
  .hero__brand,
  .hero__scroll { animation: none; opacity: 1; }
}


/* ===== 반응형 ===== */
@media (max-width: 1024px) {
  .curtain { width: 170px; }
}

@media (max-width: 680px) {
  .curtain { width: 80px; }
  .menu-btn { right: 24px; top: 24px; }
  .fw--1 .frame__canvas { width: 178px; height: 220px; }
}