:root {
  --paper: #F4F3EE;
  --paper-raised: #FFFFFF;
  --ink: #1B1D1C;
  --ink-soft: #6E726D;
  --line: #E1DED4;
  --accent: #1E6F63;
  --accent-soft: #1E6F6320;
  --track: #DEDBD0;
  --shadow-1: 0 1px 2px rgba(30,32,28,0.05), 0 14px 30px -16px rgba(30,32,28,0.28);
  --shadow-2: 0 2px 4px rgba(30,32,28,0.07), 0 22px 44px -18px rgba(30,32,28,0.32);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #141615;
    --paper-raised: #1D201F;
    --ink: #ECEBE5;
    --ink-soft: #9A9D97;
    --line: #2B2E2C;
    --accent: #4FD9C4;
    --accent-soft: #4FD9C420;
    --track: #2B2E2C;
    --shadow-1: 0 1px 2px rgba(0,0,0,0.4), 0 16px 34px -16px rgba(0,0,0,0.65);
    --shadow-2: 0 2px 4px rgba(0,0,0,0.5), 0 26px 50px -18px rgba(0,0,0,0.7);
  }
}
:root[data-theme="dark"] {
  --paper: #141615;
  --paper-raised: #1D201F;
  --ink: #ECEBE5;
  --ink-soft: #9A9D97;
  --line: #2B2E2C;
  --accent: #4FD9C4;
  --accent-soft: #4FD9C420;
  --track: #2B2E2C;
  --shadow-1: 0 1px 2px rgba(0,0,0,0.4), 0 16px 34px -16px rgba(0,0,0,0.65);
  --shadow-2: 0 2px 4px rgba(0,0,0,0.5), 0 26px 50px -18px rgba(0,0,0,0.7);
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Space Grotesk', 'Helvetica Neue', Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.wrap { max-width: 900px; margin: 0 auto; padding: 2.5rem 1.5rem 4rem; position: relative; }

.hero-glow {
  position: absolute;
  width: 460px;
  height: 460px;
  top: -140px;
  right: -180px;
  background: radial-gradient(circle at 35% 35%, var(--accent) 0%, transparent 68%);
  opacity: 0.16;
  filter: blur(60px);
  z-index: -1;
  border-radius: 50%;
  pointer-events: none;
}
@media (max-width: 620px) { .hero-glow { width: 300px; height: 300px; top: -80px; right: -120px; } }

/* site-wide header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 900px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 0;
  flex-wrap: wrap;
  gap: 1rem;
}
.site-nav { display: flex; gap: 1.4rem; }
.site-nav a {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.78rem;
  color: var(--ink-soft);
  text-decoration: none;
}
.site-nav a:hover, .site-nav a.active { color: var(--accent); }

header.top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 3rem; }
.mark { font-family: 'IBM Plex Mono', monospace; font-size: 0.85rem; display: flex; align-items: center; gap: 0.5rem; color: var(--ink); text-decoration: none; }
.mark .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); display: inline-block; }
.badge {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.68rem;
  letter-spacing: 0.02em;
  color: var(--accent);
  border: 1px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 100px;
  padding: 0.35rem 0.8rem;
}

.wrap > .badge { display: inline-block; margin: 1.5rem 0 1.25rem; }

h1 {
  font-weight: 600;
  font-size: clamp(2rem, 5vw, 3.1rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 0 0 1rem;
}
.sub { color: var(--ink-soft); font-size: 1.05rem; max-width: 50ch; line-height: 1.55; margin: 0 0 2.25rem; }

.dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  border: 1.5px dashed var(--line);
  border-radius: 8px;
  background: var(--paper-raised);
  padding: 3.5rem 1.5rem;
  cursor: pointer;
  text-align: center;
  box-shadow: var(--shadow-1);
  transition: border-color 0.15s ease, background 0.15s ease, box-shadow 0.2s ease;
  transform-style: preserve-3d;
  will-change: transform;
}
.dropzone:hover, .dropzone.drag { border-color: var(--accent); background: var(--accent-soft); box-shadow: var(--shadow-2); }
.drop-icon { width: 30px; height: 30px; color: var(--accent); animation: float 3s ease-in-out infinite; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-6px); } }
@media (prefers-reduced-motion: reduce) { .drop-icon { animation: none; } }
.drop-text { font-size: 1rem; color: var(--ink); }
.drop-hint { font-family: 'IBM Plex Mono', monospace; font-size: 0.7rem; color: var(--ink-soft); }

.workspace { margin-top: 2.25rem; }

.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 1.1rem; }
@media (max-width: 620px) { .compare { grid-template-columns: 1fr; } }
.shot {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-1);
  transition: box-shadow 0.2s ease;
  transform-style: preserve-3d;
  will-change: transform;
}
.shot:hover { box-shadow: var(--shadow-2); }
.shot-head { display: flex; justify-content: space-between; align-items: center; padding: 0.75rem 1rem; border-bottom: 1px solid var(--line); }
.shot-label { font-family: 'IBM Plex Mono', monospace; font-size: 0.65rem; letter-spacing: 0.06em; color: var(--ink-soft); }
.shot-label.accent { color: var(--accent); }
.shot-size { font-family: 'IBM Plex Mono', monospace; font-size: 0.78rem; color: var(--ink); }
.shot-size.accent { color: var(--accent); }
.shot-frame { aspect-ratio: 4 / 3; display: flex; align-items: center; justify-content: center; background: repeating-conic-gradient(var(--track) 0% 25%, transparent 0% 50%) 0 0 / 16px 16px; }
.shot-frame img { max-width: 100%; max-height: 100%; object-fit: contain; display: block; }
.shot-dims { display: block; font-family: 'IBM Plex Mono', monospace; font-size: 0.68rem; color: var(--ink-soft); padding: 0.5rem 1rem 0.75rem; }

.meter-block { margin-top: 1.25rem; }
.meter { height: 8px; border-radius: 100px; background: var(--track); overflow: hidden; position: relative; box-shadow: inset 0 1px 3px rgba(0,0,0,0.15); }
.meter-bar { position: absolute; top: 0; left: 0; height: 100%; background: var(--ink-soft); width: 100%; border-radius: 100px; }
.meter-bar.accent { background: var(--accent); width: 0%; transition: width 0.6s cubic-bezier(.2,.8,.2,1); }
.meter-stat { margin-top: 0.6rem; font-family: 'IBM Plex Mono', monospace; font-size: 0.9rem; color: var(--ink-soft); }
.meter-stat span { color: var(--accent); font-weight: 600; font-size: 1.15rem; }
@media (prefers-reduced-motion: reduce) { .meter-bar.accent { transition: none; } }

.controls { margin-top: 2rem; display: flex; flex-direction: column; gap: 1.4rem; }
.control-label { display: flex; justify-content: space-between; font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; color: var(--ink-soft); margin-bottom: 0.5rem; }
.control-value { color: var(--accent); }
input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 4px;
  border-radius: 100px;
  background: var(--track);
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 3px solid var(--paper-raised);
  box-shadow: 0 0 0 1px var(--accent);
}
input[type="range"]::-moz-range-thumb {
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 3px solid var(--paper-raised);
  box-shadow: 0 0 0 1px var(--accent);
}

.control-row { display: flex; align-items: end; gap: 0.9rem; flex-wrap: wrap; }
.control.small { flex: 1; min-width: 100px; }
.num-input {
  width: 100%;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.9rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper-raised);
  color: var(--ink);
}
.num-input:focus { outline: none; border-color: var(--accent); }
.lock-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  color: var(--ink-soft);
  padding-bottom: 0.6rem;
  cursor: pointer;
  white-space: nowrap;
}
.lock-toggle input { accent-color: var(--accent); }

.tones { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tone-pill {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  padding: 0.45rem 0.9rem;
  border-radius: 100px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--ink-soft);
  cursor: pointer;
}
.tone-pill.active { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }

.actions { display: flex; justify-content: flex-end; gap: 0.6rem; margin-top: 1.75rem; }
.btn {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8rem;
  padding: 0.65rem 1.3rem;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--paper);
  box-shadow: 0 3px 0 rgba(0,0,0,0.18), var(--shadow-1);
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}
.btn:hover:not(:disabled) { transform: translateY(-1px); }
.btn:active:not(:disabled) { transform: translateY(2px); box-shadow: 0 0 0 rgba(0,0,0,0); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; box-shadow: none; }
.btn.ghost { background: transparent; color: var(--ink-soft); border-color: var(--line); box-shadow: none; }
.btn.ghost:hover { color: var(--ink); border-color: var(--ink-soft); transform: none; }

.status { font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; color: var(--ink-soft); margin-top: 0.9rem; min-height: 1.2em; text-align: right; }
.status.err { color: #B2453D; }

footer.tool-note { margin-top: 3.5rem; padding-top: 1.5rem; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: 0.8rem; line-height: 1.6; max-width: 62ch; }

/* tools grid (homepage, more tools coming) */
.more-tools { margin-top: 4rem; }
.more-tools h2 { font-size: 1.3rem; font-weight: 600; margin: 0 0 1.1rem; }
.tool-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
.tool-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper-raised);
  padding: 1.1rem 1.2rem;
  text-decoration: none;
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  box-shadow: var(--shadow-1);
  transition: box-shadow 0.2s ease;
  transform-style: preserve-3d;
  will-change: transform;
}
.tool-card.live:hover { border-color: var(--accent); box-shadow: var(--shadow-2); }
.tool-card .name { font-weight: 600; font-size: 0.98rem; }
.tool-card .desc { font-size: 0.85rem; color: var(--ink-soft); line-height: 1.4; }
.tool-card .tag {
  align-self: flex-start;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  padding: 0.2rem 0.55rem;
  border-radius: 100px;
  margin-top: 0.2rem;
}
.tool-card.live .tag { color: var(--accent); background: var(--accent-soft); }
.tool-card.soon { opacity: 0.6; cursor: default; }
.tool-card.soon .tag { color: var(--ink-soft); background: var(--track); }

/* simple content pages (about/privacy/terms/contact) */
.page-content { max-width: 900px; margin: 0 auto; padding: 0 1.5rem 4rem; }
.page-content h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); margin: 0.5rem 0 1.5rem; }
.page-content h2 { font-size: 1.15rem; margin: 2rem 0 0.7rem; }
.page-content p { color: var(--ink-soft); line-height: 1.7; margin: 0 0 1rem; max-width: 68ch; }
.page-content a { color: var(--accent); }
.page-content ul { color: var(--ink-soft); line-height: 1.7; max-width: 68ch; }
.contact-email {
  display: inline-block;
  margin-top: 0.5rem;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 1rem;
  color: var(--accent);
  border: 1px solid var(--accent);
  background: var(--accent-soft);
  padding: 0.6rem 1.1rem;
  border-radius: 4px;
  text-decoration: none;
}

.contact-form { display: flex; flex-direction: column; gap: 1.2rem; max-width: 480px; margin-top: 1.75rem; }
.field { display: flex; flex-direction: column; gap: 0.45rem; }
.field label { font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; letter-spacing: 0.03em; color: var(--ink-soft); }
.field input, .field textarea {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper-raised);
  color: var(--ink);
  resize: vertical;
  box-shadow: var(--shadow-1);
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.form-hint { font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; color: var(--ink-soft); margin-top: 0.9rem; }

/* site-wide footer */
.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 2rem;
}
.site-footer .footer-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.site-footer nav { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.site-footer nav a { font-family: 'IBM Plex Mono', monospace; font-size: 0.75rem; color: var(--ink-soft); text-decoration: none; }
.site-footer nav a:hover { color: var(--accent); }
.site-footer p { margin: 0; font-family: 'IBM Plex Mono', monospace; font-size: 0.72rem; color: var(--ink-soft); }