/* =========================================================
   도트프레스 — 스타일시트
   테마: 레트로 아케이드 / CRT 캐비닛
   컬러 토큰, 타이포, 레이아웃, 컴포넌트 순서로 구성됨
   ========================================================= */

:root{
  /* --- color tokens --- */
  --bg:        #0b0c14;
  --bg-alt:    #12141f;
  --panel:     #171a2c;
  --panel-2:   #1d2036;
  --grid-line: #262a45;
  --border:    #2a2e4a;
  --accent-cyan:    #4ff0d7;
  --accent-cyan-dim:#2ba98f;
  --accent-magenta: #ff3ec8;
  --accent-amber:   #ffcb47;
  --text:      #eef1f8;
  --text-dim:  #9297b4;
  --danger:    #ff5c72;

  /* --- type --- */
  --font-display: 'Press Start 2P', monospace;
  --font-body: 'Space Grotesk', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius: 10px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }

body{
  margin:0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img{ max-width:100%; display:block; }
a{ color: var(--accent-cyan); text-decoration: none; }
a:hover{ text-decoration: underline; }

.sr-only{
  position:absolute; width:1px; height:1px; overflow:hidden;
  clip:rect(0,0,0,0); white-space:nowrap;
}

.skip-link{
  position:absolute; left:-9999px; top:0; z-index:999;
  background:var(--accent-cyan); color:#04110d; padding:.75rem 1rem;
  border-radius:0 0 8px 0; font-family:var(--font-mono); font-weight:700;
}
.skip-link:focus{ left:0; }

:focus-visible{
  outline: 2px solid var(--accent-amber);
  outline-offset: 2px;
}

/* =========================================================
   HEADER
   ========================================================= */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(11,12,20,.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.header-inner{
  max-width: 1200px; margin:0 auto; padding: .9rem 1.5rem;
  display:flex; align-items:center; justify-content:space-between;
  gap: 1rem;
}
.logo{ display:flex; align-items:center; gap:.6rem; color:var(--text); }
.logo:hover{ text-decoration:none; }
.logo-mark{
  color: var(--accent-cyan); font-size:1.4rem; line-height:1;
  text-shadow: 0 0 12px var(--accent-cyan);
}
.logo-text{ font-weight:700; font-size:1.05rem; letter-spacing:.02em; display:flex; flex-direction:column; }
.logo-sub{ font-family: var(--font-mono); font-size:.6rem; color: var(--text-dim); letter-spacing:.14em; }

.site-nav{ display:flex; gap:1.6rem; }
.site-nav a{ color: var(--text-dim); font-size:.92rem; font-weight:500; }
.site-nav a:hover, .site-nav a.is-current{ color: var(--accent-cyan); text-decoration:none; }

.nav-toggle{
  display:none; flex-direction:column; justify-content:center; gap:5px;
  width:38px; height:38px; background:none; border:1px solid var(--border);
  border-radius:6px; cursor:pointer;
}
.nav-toggle span{ display:block; height:2px; background:var(--text); border-radius:2px; }

/* =========================================================
   HERO
   ========================================================= */
.hero{
  position:relative; overflow:hidden;
  max-width:900px; margin: 0 auto; padding: 4.5rem 1.5rem 3rem;
  text-align:center;
}
.crt-noise{
  position:absolute; inset:-20%; z-index:-1; opacity:.5;
  background:
    radial-gradient(circle at 20% 20%, rgba(79,240,215,.10), transparent 40%),
    radial-gradient(circle at 80% 30%, rgba(255,62,200,.10), transparent 45%);
}
.eyebrow{
  font-family: var(--font-mono); color: var(--accent-amber);
  letter-spacing:.18em; font-size:.72rem; margin:0 0 1.1rem;
}
.hero-title{
  font-family: var(--font-body); font-weight:700;
  font-size: clamp(1.7rem, 4.2vw, 2.7rem);
  line-height:1.35; margin:0 0 1.1rem;
}
.hero-sub{
  color: var(--text-dim); font-size:1.02rem; max-width:640px; margin: 0 auto 1.8rem;
}
.press-start{
  display:inline-block; font-family: var(--font-display); font-size:.78rem;
  color: var(--bg); background: var(--accent-cyan); padding: .95rem 1.6rem;
  border-radius:6px; box-shadow: 0 0 0 3px rgba(79,240,215,.18), 0 8px 24px rgba(79,240,215,.25);
  animation: blink-start 1.6s steps(1) infinite;
}
.press-start:hover{ text-decoration:none; filter:brightness(1.08); }
@keyframes blink-start{
  0%, 55%{ opacity:1; } 56%, 100%{ opacity:.72; }
}
@media (prefers-reduced-motion: reduce){
  .press-start{ animation:none; }
  html{ scroll-behavior:auto; }
}

/* =========================================================
   STAGE — 그리기 도구 (아케이드 캐비닛)
   ========================================================= */
.stage{ padding: 1rem 1.5rem 5rem; }
.cabinet{
  max-width:1200px; margin:0 auto;
  display:grid;
  grid-template-columns: 220px minmax(0,1fr) 240px;
  gap: 1.1rem;
  background: linear-gradient(180deg, var(--panel-2), var(--panel));
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 1.2rem;
  box-shadow: 0 30px 60px -30px rgba(0,0,0,.6);
}
.panel{ display:flex; flex-direction:column; gap:1.1rem; }
.panel-block{
  background: rgba(255,255,255,.02);
  border:1px solid var(--border);
  border-radius: var(--radius);
  padding: .9rem;
}
.panel-title{
  font-family: var(--font-mono); font-size:.68rem; letter-spacing:.12em;
  color: var(--text-dim); text-transform:uppercase; margin:0 0 .7rem;
}

/* tool buttons */
.tool-grid{ display:grid; grid-template-columns: 1fr 1fr; gap:.5rem; }
.tool-btn{
  display:flex; flex-direction:column; align-items:center; gap:.25rem;
  background: var(--bg-alt); color: var(--text-dim);
  border:1px solid var(--border); border-radius:8px;
  padding:.6rem .3rem; font-family: var(--font-body); font-size:.72rem;
  cursor:pointer; transition: all .15s ease;
}
.tool-icon{ font-size:1.05rem; }
.tool-btn:hover{ border-color: var(--accent-cyan); color:var(--text); }
.tool-btn.is-active{
  background: rgba(79,240,215,.12); border-color: var(--accent-cyan); color: var(--accent-cyan);
  box-shadow: 0 0 0 1px rgba(79,240,215,.25) inset;
}

/* color */
.current-color-row{ display:flex; align-items:center; gap:.6rem; margin-bottom:.7rem; }
#colorPicker{
  width:42px; height:42px; border:2px solid var(--border); border-radius:8px;
  background:none; padding:0; cursor:pointer;
}
.current-color-label{ font-size:.82rem; color:var(--text-dim); }
.palette{ display:grid; grid-template-columns: repeat(6, 1fr); gap:.35rem; margin-bottom:.8rem; }
.swatch{
  width:100%; aspect-ratio:1; border-radius:5px; border:2px solid transparent;
  cursor:pointer; padding:0;
}
.swatch.is-active{ border-color: var(--text); }
.recent-row{ display:flex; align-items:center; gap:.5rem; }
.recent-label{ font-size:.68rem; color:var(--text-dim); font-family:var(--font-mono); }
.recent-colors{ display:flex; gap:.3rem; flex-wrap:wrap; }
.recent-colors .swatch{ width:20px; height:20px; }

/* buttons general */
.btn-row{ display:flex; gap:.5rem; margin-bottom:.6rem; }
.btn-ghost{
  flex:1; background: var(--bg-alt); color: var(--text);
  border:1px solid var(--border); border-radius:8px; padding:.55rem .4rem;
  font-family: var(--font-body); font-size:.8rem; cursor:pointer; transition: all .15s ease;
}
.btn-ghost:hover{ border-color: var(--accent-cyan); color:var(--accent-cyan); }
.btn-ghost.small{ padding:.4rem .6rem; flex:none; }
.btn-danger{ width:100%; color: var(--danger); }
.btn-danger:hover{ border-color: var(--danger); color:var(--danger); }

.btn-primary{
  width:100%; background: var(--accent-cyan); color:#04110d; border:none;
  border-radius:8px; padding:.75rem; font-weight:700; font-size:.88rem;
  cursor:pointer; margin-bottom:.6rem; transition: filter .15s ease;
}
.btn-primary:hover{ filter:brightness(1.08); }
.btn-secondary{
  width:100%; background: transparent; color: var(--accent-magenta);
  border:1px solid var(--accent-magenta); border-radius:8px; padding:.7rem;
  font-weight:600; font-size:.82rem; cursor:pointer;
}
.btn-secondary:hover{ background: rgba(255,62,200,.08); }

/* screen / canvas */
.screen-wrap{ display:flex; flex-direction:column; align-items:center; gap:.8rem; min-width:0; }
.screen-bezel{
  position:relative; width:100%; background:#04050a; border-radius:14px;
  border: 1px solid var(--border); padding: .8rem;
  box-shadow: inset 0 0 40px rgba(0,0,0,.7);
}
.hud{
  display:flex; justify-content:space-between; gap:.5rem;
  font-family: var(--font-mono); font-size:.68rem; color: var(--accent-cyan);
  padding: 0 .2rem .6rem; letter-spacing:.03em; flex-wrap:wrap;
}
.canvas-viewport{
  width:100%; aspect-ratio:1; display:flex; align-items:center; justify-content:center;
  overflow:auto; background:
    linear-gradient(45deg, #10121c 25%, transparent 25%) 0 0/16px 16px,
    linear-gradient(-45deg, #10121c 25%, transparent 25%) 0 0/16px 16px,
    linear-gradient(45deg, transparent 75%, #10121c 75%) 0 0/16px 16px,
    linear-gradient(-45deg, transparent 75%, #10121c 75%) 0 0/16px 16px,
    #0a0b13;
  border-radius:8px;
}
#pixelCanvas{
  image-rendering: pixelated; image-rendering: crisp-edges;
  touch-action: none; cursor: crosshair;
  box-shadow: 0 0 30px rgba(79,240,215,.12);
}
.screen-scanlines{
  position:absolute; inset:.8rem; pointer-events:none; border-radius:8px;
  background: repeating-linear-gradient(
    0deg, rgba(0,0,0,.18), rgba(0,0,0,.18) 1px, transparent 1px, transparent 3px
  );
  mix-blend-mode: multiply;
}

.zoom-row{ display:flex; align-items:center; gap:.6rem; width:100%; max-width:420px; }
.zoom-row input[type="range"]{ flex:1; accent-color: var(--accent-cyan); }
.grid-toggle{ display:flex; align-items:center; gap:.35rem; font-size:.78rem; color:var(--text-dim); white-space:nowrap; }
.grid-toggle input{ accent-color: var(--accent-cyan); }

/* size presets */
.size-presets{ display:grid; grid-template-columns: 1fr 1fr; gap:.4rem; margin-bottom:.7rem; }
.size-btn{
  background: var(--bg-alt); color:var(--text-dim); border:1px solid var(--border);
  border-radius:7px; padding:.5rem; font-family:var(--font-mono); font-size:.72rem; cursor:pointer;
}
.size-btn:hover{ border-color:var(--accent-cyan); color:var(--text); }
.size-btn.is-active{ border-color: var(--accent-cyan); color:var(--accent-cyan); }
.custom-size{ display:flex; align-items:center; gap:.4rem; font-size:.75rem; color:var(--text-dim); flex-wrap:wrap; }
.custom-size input{
  width:52px; background: var(--bg-alt); border:1px solid var(--border); color:var(--text);
  border-radius:6px; padding:.3rem; font-family:var(--font-mono);
}
.hint{ font-size:.72rem; color: var(--text-dim); margin:.6rem 0 0; }

.scale-label{ display:block; font-size:.78rem; color:var(--text-dim); margin-bottom:.7rem; }
.scale-label select{
  display:block; width:100%; margin-top:.35rem; background: var(--bg-alt);
  color:var(--text); border:1px solid var(--border); border-radius:7px; padding:.5rem;
  font-family: var(--font-mono);
}

.stage-note{
  max-width:1200px; margin: 1.2rem auto 0; text-align:center;
  font-size:.82rem; color: var(--text-dim);
}

/* =========================================================
   SECTIONS: features / about
   ========================================================= */
.section-title{
  max-width:1200px; margin: 0 auto 2rem; padding: 0 1.5rem;
  font-size: clamp(1.4rem,3vw,1.9rem); display:flex; flex-direction:column; gap:.4rem;
}
.section-eyebrow{
  font-family: var(--font-mono); font-size:.7rem; letter-spacing:.2em;
  color: var(--accent-magenta);
}

.features{ padding: 3rem 0 4rem; background: var(--bg-alt); }
.stage-cards{
  max-width:1200px; margin:0 auto; padding: 0 1.5rem;
  display:grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap:1.1rem;
}
.stage-card{
  background: var(--panel); border:1px solid var(--border); border-radius: var(--radius);
  padding: 1.3rem 1.2rem; position:relative; overflow:hidden;
}
.stage-card::before{
  content:""; position:absolute; top:0; left:0; width:100%; height:3px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-magenta));
}
.stage-num{
  display:inline-block; font-family: var(--font-mono); font-size:.68rem;
  color: var(--accent-amber); letter-spacing:.1em; margin-bottom:.6rem;
}
.stage-card h3{ margin:.2rem 0 .5rem; font-size:1.05rem; }
.stage-card p{ margin:0; color: var(--text-dim); font-size:.92rem; }

.about{ padding: 4rem 0 5rem; }
.about-body{ max-width:760px; margin:0 auto; padding:0 1.5rem; color: var(--text-dim); }
.about-body p{ margin: 0 0 1.1rem; }
.about-body strong{ color: var(--text); }

/* =========================================================
   DOC PAGES (about.html 상세 / privacy.html)
   ========================================================= */
.doc-page{ max-width: 760px; margin: 0 auto; padding: 3rem 1.5rem 5rem; }
.doc-page h1{ font-size: clamp(1.5rem,3.4vw,2rem); margin-bottom:.6rem; }
.doc-lead{ color: var(--text-dim); font-size:1.02rem; }
.doc-meta{ font-family: var(--font-mono); font-size:.78rem; color: var(--text-dim); margin-bottom:2rem; }
.doc-page h2{ font-size:1.15rem; margin: 2.1rem 0 .8rem; color: var(--accent-cyan); }
.doc-page p{ color: var(--text-dim); }
.doc-list{ color: var(--text-dim); padding-left:1.2rem; }
.doc-list li{ margin-bottom:.4rem; }

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{ border-top:1px solid var(--border); background: var(--bg-alt); }
.footer-inner{
  max-width:1200px; margin:0 auto; padding: 2.4rem 1.5rem;
  display:flex; flex-wrap:wrap; gap:1.5rem; justify-content:space-between; align-items:flex-start;
}
.footer-brand{ font-weight:700; }
.footer-brand p{ font-weight:400; color:var(--text-dim); font-size:.82rem; margin:.4rem 0 0; }
.footer-nav{ display:flex; gap:1.2rem; flex-wrap:wrap; }
.footer-nav a{ color: var(--text-dim); font-size:.86rem; }
.footer-copy{ width:100%; color: var(--text-dim); font-size:.78rem; margin-top:1rem; font-family: var(--font-mono); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 980px){
  .cabinet{ grid-template-columns: 1fr; }
  .panel-left, .panel-right{ flex-direction:row; flex-wrap:wrap; }
  .panel-left .panel-block, .panel-right .panel-block{ flex:1 1 220px; }
}

@media (max-width: 720px){
  .site-nav{
    position:absolute; top:100%; left:0; right:0; background: var(--bg);
    flex-direction:column; padding:1rem 1.5rem; border-bottom:1px solid var(--border);
    display:none;
  }
  .site-nav.is-open{ display:flex; }
  .nav-toggle{ display:flex; }
  .panel-left, .panel-right{ flex-direction:column; }
}