/* ═══════════════════════════════════════════
   Layout — Complete Site Architecture v3
   ═══════════════════════════════════════════ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:auto}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
button{background:none;border:none;cursor:pointer;color:inherit;font:inherit}
img{display:block;max-width:100%}

body{
  background:var(--bg-black);
  color:var(--text-dark);
  font-family:var(--font-body);
  overflow:hidden;
  height:100vh;width:100vw;
  -webkit-font-smoothing:antialiased;
  cursor:none;
}

.app{width:100%;height:100%;position:relative}

/* ═══ CUSTOM CURSOR ═══ */
.cursor{
  position:fixed;
  width:20px;height:20px;
  border:2px solid rgba(255,255,255,0.9);
  border-radius:50%;
  pointer-events:none;
  z-index:100000;
  transform:translate(-50%,-50%);
  transition:width 0.3s var(--ease-expo),height 0.3s var(--ease-expo),border-color 0.3s ease,background 0.3s ease;
}
.cursor.hover{
  width:56px;height:56px;
  background:rgba(198,93,58,0.2);
  border-color:rgba(198,93,58,0.9);
}

/* ═══ PRELOADER ═══ */
.preloader{
  position:fixed;inset:0;
  z-index:var(--z-loader);
  background:var(--bg-deep);
  display:flex;align-items:center;justify-content:center;
  transition:opacity 1s ease,visibility 1s ease;
}
.preloader.done{opacity:0;visibility:hidden}
.preloader::before{
  content:'';position:absolute;inset:0;
  box-shadow:inset 0 0 180px 30px rgba(30,50,200,0.12);
  pointer-events:none;
}

.preloader-center{
  display:flex;flex-direction:column;align-items:center;gap:30px;
}

.preloader-logo{
  position:relative;width:160px;height:56px;
}
.preloader-logo-layer{
  position:absolute;inset:0;
  display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(2,1fr);gap:4px;
}
.preloader-logo-layer span{border-radius:1px}

.preloader-logo-layer.cyan span{background:#00ffff}
.preloader-logo-layer.magenta span{background:#ff00ff}
.preloader-logo-layer.white span{background:#fff}

.preloader-logo-layer.cyan{opacity:0.7;mix-blend-mode:screen;animation:chromaCyan 1.2s ease-in-out infinite}
.preloader-logo-layer.magenta{opacity:0.7;mix-blend-mode:screen;animation:chromaMag 1.2s ease-in-out infinite}
.preloader-logo-layer.white{opacity:1}

@keyframes chromaCyan{
  0%{transform:translate(-4px,2px)}25%{transform:translate(-2px,-1px)}50%{transform:translate(-5px,1px)}75%{transform:translate(-3px,3px)}100%{transform:translate(-4px,2px)}
}
@keyframes chromaMag{
  0%{transform:translate(4px,-2px)}25%{transform:translate(2px,1px)}50%{transform:translate(5px,-1px)}75%{transform:translate(3px,-3px)}100%{transform:translate(4px,-2px)}
}

.preloader-pct{
  font-family:var(--font-mono);
  font-size:var(--fs-sm);
  color:rgba(255,255,255,0.5);
  letter-spacing:0.1em;
}

/* ═══ GRAIN OVERLAY ═══ */
.grain{
  position:fixed;inset:0;z-index:var(--z-grain);pointer-events:none;opacity:0.08;
}
.grain::after{
  content:'';position:absolute;inset:-200%;width:400%;height:400%;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='5' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  animation:grainMove 0.3s steps(1) infinite;
}
@keyframes grainMove{
  0%{transform:translate(0,0)}20%{transform:translate(-5%,-8%)}40%{transform:translate(7%,-3%)}60%{transform:translate(-3%,5%)}80%{transform:translate(4%,2%)}
}

/* ═══ NAVIGATION ═══ */
.nav{
  position:fixed;top:0;left:0;right:0;
  height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;
  padding:0 24px;z-index:var(--z-nav);
}

.nav-logo{
  display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(2,1fr);
  gap:3px;width:76px;height:28px;cursor:pointer;transition:opacity 0.3s;
}
.nav-logo:hover{opacity:0.7}
.nav-logo span{background:var(--text-white)}

.nav-links{display:flex;align-items:center;gap:28px}

.nav-link{
  font-size:var(--fs-sm);color:var(--text-white);cursor:pointer;
  position:relative;transition:opacity 0.25s;padding:4px 0;
}
.nav-link:hover{opacity:0.6}
.nav-link.active{text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}

.nav-menu-btn{font-size:var(--fs-sm);color:var(--text-white);cursor:pointer;transition:opacity 0.25s}
.nav-menu-btn:hover{opacity:0.6}

/* ═══ LEFT SIDEBAR ═══ */
.sidebar{
  position:fixed;left:0;top:0;width:var(--sidebar-w);height:100vh;
  z-index:var(--z-sidebar);
  display:flex;flex-direction:column;align-items:center;
  padding:80px 10px 20px;overflow-y:auto;scrollbar-width:none;
}
.sidebar::-webkit-scrollbar{display:none}

.sidebar-card{
  width:88px;flex-shrink:0;cursor:pointer;
  transition:transform 0.4s var(--ease-expo),opacity 0.3s;opacity:0.8;position:relative;
}
.sidebar-card:hover{transform:scale(1.06);opacity:1}
.sidebar-card.active{opacity:1}
.sidebar-card.active::before{content:'';position:absolute;inset:-2px;border:1.5px solid var(--accent-copper);pointer-events:none}

.sidebar-card-img{width:100%;aspect-ratio:3/4;overflow:hidden;position:relative}
.sidebar-card-img canvas{width:100%;height:100%;display:block}

.sidebar-card-label{
  font-size:6.5px;font-weight:var(--fw-medium);
  letter-spacing:var(--ls-wider);text-transform:uppercase;
  color:var(--text-white);text-align:center;padding:4px 0 2px;opacity:0.8;
}

.sidebar-sep{
  width:50px;display:flex;align-items:center;justify-content:center;margin:6px 0;flex-shrink:0;
}
.sidebar-sep-line{
  width:100%;display:flex;gap:2px;align-items:center;justify-content:center;
}
.sidebar-sep-line span{flex:1;height:2px;background:var(--text-white);opacity:0.25}

/* ═══ RIGHT SIDEBAR — SPIRAL ═══ */
.spiral{
  position:fixed;right:0;top:0;width:var(--spiral-w);height:100vh;
  z-index:var(--z-sidebar);
  background:var(--accent-salmon);
  display:flex;flex-direction:column;align-items:center;padding:12px 0;overflow:hidden;
}
.spiral-dot{
  width:16px;height:16px;border-radius:50%;
  background:var(--bg-black);flex-shrink:0;margin:5px 0;
}

/* ═══ STAGE ═══ */
.stage{
  position:absolute;left:var(--sidebar-w);right:var(--spiral-w);top:0;bottom:0;
}

/* ═══ WINDOW SYSTEM ═══ */
.win{
  position:absolute;top:56px;left:16px;right:16px;bottom:16px;
  background:#7d7974;
  box-shadow:0 12px 80px rgba(0,0,0,0.6),0 2px 24px rgba(0,0,0,0.4),inset 0 1px 0 rgba(255,255,255,0.06);
  display:flex;flex-direction:column;
  transition:transform 0.9s var(--ease-expo),opacity 0.7s var(--ease-expo),filter 0.7s ease;
  will-change:transform,opacity,filter;
  overflow:hidden;
}
/* Paper texture on all windows */
.win::after{
  content:'';position:absolute;inset:0;pointer-events:none;z-index:0;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='p'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='1.2' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23p)' opacity='0.03'/%3E%3C/svg%3E");
}
.win>*{position:relative;z-index:1}

/* States */
.win[data-state="hidden"]{opacity:0;transform:translateX(120%) scale(0.94);pointer-events:none}
.win[data-state="active"]{opacity:1;transform:translate(0,0) scale(1);pointer-events:all;filter:none}
.win[data-state="behind-1"]{opacity:0.7;transform:translate(-30px,-4px) scale(0.97);pointer-events:none;filter:brightness(0.78) saturate(0.85)}
.win[data-state="behind-2"]{opacity:0.5;transform:translate(-55px,-8px) scale(0.94);pointer-events:none;filter:brightness(0.6) saturate(0.7)}
.win[data-state="behind-3"]{opacity:0.3;transform:translate(-80px,-12px) scale(0.91);pointer-events:none;filter:brightness(0.45) saturate(0.55)}

/* ═══ TITLE BAR ═══ */
.win-bar{
  display:flex;align-items:center;height:var(--titlebar-h);padding:0 16px;
  border-bottom:1px solid rgba(0,0,0,0.12);flex-shrink:0;
  font-size:var(--fs-xs);background:rgba(255,255,255,0.04);
}
.win-bar-dots{display:flex;gap:6px;margin-right:12px}
.win-bar-dot{width:9px;height:9px;border-radius:50%;background:rgba(0,0,0,0.45)}
.win-bar-dot:first-child{background:rgba(0,0,0,0.65)}

.win-bar-title{font-weight:var(--fw-medium);color:var(--text-dark);margin-right:auto}
.win-bar-info{color:var(--text-medium);margin-right:20px}
.win-bar-year{color:var(--text-medium)}

.win-bar-close{
  display:flex;align-items:center;gap:6px;cursor:pointer;
  color:var(--text-medium);font-size:var(--fs-xs);
  transition:color 0.2s;margin-left:16px;
}
.win-bar-close:hover{color:var(--text-dark)}

/* ═══ WINDOW BODY ═══ */
.win-body{
  flex:1;overflow-y:auto;overflow-x:hidden;
  scrollbar-width:thin;scrollbar-color:rgba(0,0,0,0.15) transparent;
}
.win-body::-webkit-scrollbar{width:5px}
.win-body::-webkit-scrollbar-track{background:transparent}
.win-body::-webkit-scrollbar-thumb{background:rgba(0,0,0,0.15);border-radius:3px}

/* ═══ MENU OVERLAY ═══ */
.menu{
  position:fixed;inset:0;z-index:var(--z-menu);
  background:var(--bg-deep);
  display:flex;flex-direction:column;
  opacity:0;visibility:hidden;
  transition:opacity 0.6s var(--ease-expo),visibility 0.6s;
}
.menu.open{opacity:1;visibility:visible}
.menu::before{
  content:'';position:absolute;inset:0;
  box-shadow:inset 0 0 160px 20px rgba(35,55,200,0.13);
  pointer-events:none;
}

.menu-close{
  position:absolute;top:16px;right:24px;
  font-size:var(--fs-sm);color:var(--text-white);cursor:pointer;z-index:2;
  transition:opacity 0.25s;
}
.menu-close:hover{opacity:0.6}

.menu-grid{
  flex:1;display:grid;grid-template-columns:repeat(4,1fr);
  gap:24px;padding:100px 40px 40px;align-content:center;
}

.menu-card{cursor:pointer;transition:transform 0.4s var(--ease-expo)}
.menu-card:hover{transform:translateY(-8px)}

.menu-card-head{display:flex;align-items:baseline;gap:8px;margin-bottom:12px}
.menu-card-num{
  font-family:var(--font-display);font-size:var(--fs-xl);font-weight:var(--fw-black);
  -webkit-text-stroke:1.5px var(--text-white);color:transparent;line-height:1;
}
.menu-card-label{
  font-size:var(--fs-md);font-weight:var(--fw-semibold);color:var(--text-white);
  text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;
}
.menu-card-preview{
  width:100%;aspect-ratio:3/4;border:1px solid rgba(255,255,255,0.08);
  overflow:hidden;background:var(--window-gray);
}
.menu-card-preview canvas{width:100%;height:100%;display:block}

/* ═══ BOTTOM-RIGHT LOGO ═══ */
.logo-br{
  position:fixed;bottom:16px;right:calc(var(--spiral-w) + 16px);
  z-index:var(--z-sidebar);width:52px;height:52px;cursor:pointer;
  transition:transform 0.5s var(--ease-expo);
}
.logo-br:hover{transform:rotate(20deg) scale(1.15)}
.logo-br svg{width:100%;height:100%;opacity:0.55;transition:opacity 0.3s}
.logo-br:hover svg{opacity:1}

/* ═══ SOUND TOGGLE ═══ */
.sound-toggle{
  position:fixed;bottom:20px;left:calc(var(--sidebar-w) + 20px);
  z-index:var(--z-nav);
  width:40px;height:40px;
  display:flex;align-items:center;justify-content:center;
  border:1.5px solid rgba(255,255,255,0.35);
  border-radius:50%;
  color:rgba(255,255,255,0.7);
  background:rgba(0,0,0,0.3);
  backdrop-filter:blur(6px);
  cursor:pointer;
  transition:all 0.3s var(--ease-expo);
}
.sound-toggle:hover{
  border-color:var(--accent-copper);
  color:var(--accent-copper);
  background:rgba(198,93,58,0.1);
  transform:scale(1.1);
}
.sound-toggle.playing{
  border-color:var(--accent-copper);
  color:var(--accent-copper);
  animation:soundPulse 2s ease-in-out infinite;
}
@keyframes soundPulse{
  0%,100%{box-shadow:0 0 0 0 rgba(198,93,58,0.3)}
  50%{box-shadow:0 0 0 8px rgba(198,93,58,0)}
}