/* DiveScope — NullKit V2 Terminal Dark Theme */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700;800&family=Instrument+Serif:ital@0;1&display=swap');

:root {
  --bg: #050508;
  --surface: #0c0c12;
  --surface-2: #13131d;
  --border: #1e1e2e;
  --accent: #00ff9f;
  --accent-dim: #00cc7f;
  --text: #e0e0e0;
  --text-dim: #666;
  --font-mono: 'JetBrains Mono', monospace;
  --font-serif: 'Instrument Serif', serif;
}

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

body {
  font-family: var(--font-mono);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* --- Landing Page --- */
.container { max-width: 900px; margin: 0 auto; padding: 2rem 1.5rem; }

.hero { text-align: center; padding: 4rem 0 2rem; }
.hero h1 {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 400;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.hero .tagline { color: var(--text-dim); font-size: 0.9rem; margin-bottom: 2rem; }

/* Drop zone */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 4rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  background: var(--surface);
}
.drop-zone:hover, .drop-zone.drag-over {
  border-color: var(--accent);
  background: var(--surface-2);
}
.drop-zone .drop-icon { font-size: 3rem; margin-bottom: 1rem; }
.drop-zone p { color: var(--text-dim); }
.drop-zone .formats { display: inline-block; margin-top: 1rem; padding: 0.3rem 0.8rem; background: var(--surface-2); border: 1px solid var(--border); border-radius: 4px; font-size: 0.75rem; color: var(--accent-dim); }

.actions { text-align: center; margin-top: 1.5rem; }
.btn {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  border: 1px solid var(--accent);
  color: var(--accent);
  background: transparent;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.2s;
}
.btn:hover { background: rgba(0,255,159,0.1); }
.btn-primary { background: var(--accent); color: var(--bg); font-weight: 700; }
.btn-primary:hover { background: var(--accent-dim); }

.hint-text { text-align: center; margin-top: 1.5rem; color: var(--text-dim); font-size: 0.8rem; }
.hint-text code { background: var(--surface-2); padding: 0.15rem 0.4rem; border-radius: 3px; }

.processing { color: var(--accent); font-size: 1.2rem; }
.error { color: #ff5555; font-size: 1.1rem; }

/* --- Report View --- */
.report { display: none; }
.report-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
  flex-wrap: wrap;
}
.report-header .back-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 0.4rem 0.8rem;
  border-radius: 4px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.report-header .back-btn:hover { border-color: var(--accent); color: var(--accent); }
.badge {
  padding: 0.2rem 0.6rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 3px;
  font-size: 0.75rem;
  color: var(--text-dim);
}
.badge.format { color: var(--accent); border-color: var(--accent); }
.image-name { font-weight: 700; font-size: 1.1rem; }

/* --- Tabs --- */
.tab-bar {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.5rem;
}
.tab-btn {
  padding: 0.6rem 1.2rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
.tab-btn[data-tab="layers"].active { color: #00ff9f; border-color: #00ff9f; }
.tab-btn[data-tab="config"].active { color: #ff9f00; border-color: #ff9f00; }
.tab-btn[data-tab="size"].active { color: #9f00ff; border-color: #9f00ff; }
.tab-btn[data-tab="dockerfile"].active { color: #00b4ff; border-color: #00b4ff; }

.tab-pane { display: none; }
.tab-pane.active { display: block; }

/* --- Layer Table --- */
.layer-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}
.layer-table th {
  text-align: left;
  padding: 0.5rem 0.8rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
  font-weight: 400;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.layer-table td {
  padding: 0.5rem 0.8rem;
  border-bottom: 1px solid var(--surface-2);
}
.layer-table tr:hover { background: var(--surface); }
.layer-table .empty-layer td { color: var(--text-dim); font-style: italic; }
.cmd-cell { max-width: 400px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.bar-col { width: 150px; }
.size-bar {
  height: 14px;
  background: var(--accent);
  border-radius: 2px;
  min-width: 1px;
  opacity: 0.7;
}

/* --- Config --- */
.config-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media (max-width: 700px) { .config-grid { grid-template-columns: 1fr; } }
.config-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem;
  position: relative;
}
.config-section::before {
  content: '● ● ●';
  position: absolute;
  top: 0.4rem;
  right: 0.8rem;
  color: var(--border);
  font-size: 0.5rem;
  letter-spacing: 0.2em;
}
.config-section h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.8rem;
  letter-spacing: 0.05em;
}
.config-table { width: 100%; font-size: 0.8rem; }
.config-table td { padding: 0.3rem 0; vertical-align: top; }
.cfg-key { color: var(--text-dim); white-space: nowrap; padding-right: 1rem !important; }
.cfg-val { word-break: break-all; }

.raw-json {
  margin-top: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.8rem 1rem;
}
.raw-json summary { cursor: pointer; color: var(--text-dim); font-size: 0.8rem; }
.raw-json pre {
  margin-top: 0.8rem;
  max-height: 400px;
  overflow: auto;
  font-size: 0.7rem;
  color: var(--text-dim);
}

/* --- Size Analysis --- */
.size-summary { display: flex; gap: 2rem; justify-content: center; margin-bottom: 2rem; }
.stat { text-align: center; }
.stat-val { display: block; font-size: 1.8rem; font-weight: 800; color: var(--accent); }
.stat-label { font-size: 0.7rem; color: var(--text-dim); text-transform: uppercase; }
.charts-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }
@media (max-width: 700px) { .charts-row { grid-template-columns: 1fr; } }
.chart-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  height: 350px;
  position: relative;
}
.chart-box::before {
  content: '● ● ●';
  position: absolute;
  top: 0.4rem;
  left: 0.8rem;
  color: var(--border);
  font-size: 0.5rem;
  letter-spacing: 0.2em;
  z-index: 1;
}

/* --- Dockerfile --- */
.dockerfile-pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.8;
  position: relative;
}
.dockerfile-pre::before {
  content: '● ● ●';
  position: absolute;
  top: 0.5rem;
  right: 0.8rem;
  color: var(--border);
  font-size: 0.5rem;
  letter-spacing: 0.2em;
}

/* --- Footer --- */
.footer {
  text-align: center;
  padding: 3rem 0 2rem;
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  color: var(--text-dim);
  font-size: 0.75rem;
}
.footer a { color: var(--accent-dim); }

/* --- Static pages --- */
.prose { max-width: 700px; margin: 0 auto; }
.prose h1 { font-family: var(--font-serif); color: var(--accent); font-weight: 400; font-size: 2.2rem; margin-bottom: 1rem; }
.prose h2 { color: var(--accent-dim); font-size: 1.1rem; margin: 2rem 0 0.5rem; }
.prose p, .prose li { color: var(--text-dim); font-size: 0.85rem; line-height: 1.7; margin-bottom: 1rem; }
.prose code { background: var(--surface-2); padding: 0.15rem 0.4rem; border-radius: 3px; font-size: 0.8rem; }
.prose pre { background: var(--surface); border: 1px solid var(--border); border-radius: 6px; padding: 1rem; overflow-x: auto; margin-bottom: 1rem; }
.prose ul { padding-left: 1.5rem; }