/* ============================================================
   STEGANOGRAPHY — forensic console layout, soft classic theme.
   ============================================================ */
:root {
  --bg: #f4f6f7;
  --grid: rgba(30, 45, 55, 0.028);
  --surface: #ffffff;
  --surface-2: #eceff1;
  --ink: #1c2228;
  --muted: #5a6670;
  --subtle: #899099;
  --line: #e0e5e8;
  --accent: #3f6f74;          /* muted teal-slate */
  --accent-soft: #ebf0f1;
  --good: #4f8a6b;
  --danger: #b35140;
  --shadow: 0 12px 32px -20px rgba(25, 40, 50, 0.30);
  --radius: 12px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SFMono-Regular", Menlo, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15191d;
    --grid: rgba(150, 190, 200, 0.035);
    --surface: #1c2127;
    --surface-2: #232a31;
    --ink: #e6ebef;
    --muted: #97a2ac;
    --subtle: #6c757e;
    --line: #2a323a;
    --accent: #6fa8ac;
    --accent-soft: #1f272d;
    --good: #79b393;
    --danger: #e08a78;
    --shadow: 0 20px 48px -24px rgba(0, 0, 0, 0.65);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100dvh; color: var(--ink); font-family: var(--font); font-size: 14px; line-height: 1.55;
  background: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px), var(--bg);
  background-size: 30px 30px, 30px 30px, auto; background-attachment: fixed;
}
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
button, input, select, textarea { font: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.site-header {
  position: sticky; top: 0; z-index: 20; height: 58px;
  display: flex; align-items: center; justify-content: space-between; padding: 0 clamp(18px, 4vw, 44px);
  border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--bg) 86%, transparent); backdrop-filter: blur(12px);
}
.logo-link { display: inline-flex; align-items: center; gap: 10px; color: var(--ink); font-weight: 750; }
.logo-link img { display: block; }
.logo-link small { display: block; font-family: var(--mono); font-size: 9.5px; font-weight: 700; color: var(--muted); letter-spacing: 0.12em; text-transform: uppercase; }
.home-link { color: var(--muted); font-size: 12px; font-weight: 700; font-family: var(--mono); }
.home-link:hover { color: var(--accent); }

.app-shell { width: min(1480px, 100%); margin: 0 auto; padding: clamp(16px, 3vw, 32px); }

/* Console status bar */
.console-bar { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding: 11px 16px; margin-bottom: 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }
.cb-id { display: inline-flex; align-items: center; gap: 9px; font-family: var(--mono); font-weight: 800; font-size: 12px; letter-spacing: 0.05em; }
.cb-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--good); }
.cb-readout { display: inline-flex; gap: 8px; flex-wrap: wrap; margin-left: auto; }
.cb-readout span { font-family: var(--mono); font-size: 11px; font-weight: 700; color: var(--muted); padding: 4px 9px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface-2); }
.cb-readout #cb-mode { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 38%, var(--line)); }

/* Lab grid — evidence dominant (left), control rail (right) */
.lab { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(360px, 0.85fr); gap: 16px; align-items: start; }

.evidence { padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }
.evidence-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.evidence-head h2 { margin: 0; font-size: 15px; }
.ev-tag { font-family: var(--mono); font-size: 10px; font-weight: 800; letter-spacing: 0.1em; color: var(--accent); padding: 4px 8px; border: 1px solid color-mix(in srgb, var(--accent) 38%, var(--line)); border-radius: 5px; }

.rail { display: grid; gap: 14px; padding: 18px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); }
.rail-head { display: grid; gap: 6px; }
.rail-head .lede { margin: 0; color: var(--muted); font-size: 13px; }

.eyebrow { margin: 0; color: var(--accent); font-family: var(--mono); font-size: 11px; font-weight: 800; letter-spacing: 0.1em; text-transform: uppercase; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 0; font-size: clamp(24px, 3.4vw, 38px); line-height: 1.05; letter-spacing: -0.01em; font-weight: 820; }

.rail-step { margin: 4px 0 -2px; font-family: var(--mono); font-size: 11px; font-weight: 800; letter-spacing: 0.07em; text-transform: uppercase; color: var(--muted); padding-left: 10px; border-left: 2px solid var(--accent); }

.tabs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 6px; padding: 5px; background: var(--surface-2); border: 1px solid var(--line); border-radius: var(--radius); }
.tab { border: 0; border-radius: 7px; background: transparent; color: var(--muted); min-height: 36px; padding: 0 10px; font-weight: 750; font-family: var(--mono); cursor: pointer; }
.tab.is-active { background: var(--surface); color: var(--accent); }

.mode-form { display: grid; gap: 12px; }
.hidden { display: none !important; }
.field-wide { grid-column: 1 / -1; }
.mini-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }

.field { display: grid; gap: 6px; color: var(--muted); font-size: 12px; font-weight: 700; }
input[type="text"], select, textarea { width: 100%; border: 1px solid var(--line); border-radius: 8px; background: var(--surface-2); color: var(--ink); padding: 10px 11px; outline: none; font-family: var(--mono); }
textarea { resize: vertical; min-height: 90px; font-size: 12px; }
input:focus, select:focus, textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent); }
input:disabled { opacity: 0.6; cursor: not-allowed; }

.file-drop { display: grid; gap: 7px; color: var(--muted); font-size: 12px; font-weight: 700; }
.file-drop input { width: 100%; border: 1px dashed var(--line); border-radius: 8px; padding: 10px; background: var(--surface-2); color: var(--muted); }
.file-drop span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--subtle); font-family: var(--mono); font-size: 11px; }

/* Evidence viewer canvas */
.canvas-stage {
  position: relative; width: 100%; min-height: 280px; display: grid; place-items: center; overflow: hidden;
  border: 1px solid var(--line); border-radius: 8px;
  background: repeating-linear-gradient(45deg, color-mix(in srgb, var(--ink) 5%, transparent) 0 2px, transparent 2px 10px), var(--surface-2);
}
#stage { max-width: 100%; max-height: 540px; display: block; position: relative; z-index: 1; }
.placeholder { position: absolute; z-index: 2; color: var(--subtle); font-weight: 700; font-size: 13px; font-family: var(--mono); }
.scan { display: none; }
.corner { position: absolute; z-index: 4; width: 14px; height: 14px; border: 2px solid color-mix(in srgb, var(--accent) 70%, transparent); pointer-events: none; }
.corner.tl { top: 8px; left: 8px; border-right: 0; border-bottom: 0; }
.corner.tr { top: 8px; right: 8px; border-left: 0; border-bottom: 0; }
.corner.bl { bottom: 8px; left: 8px; border-right: 0; border-top: 0; }
.corner.br { bottom: 8px; right: 8px; border-left: 0; border-top: 0; }

.capacity { margin-top: 14px; display: grid; gap: 8px; }
.capacity-row { display: flex; justify-content: space-between; align-items: center; font-size: 12px; font-weight: 800; font-family: var(--mono); color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.range-value { color: var(--accent); font-family: var(--mono); font-size: 12px; font-weight: 800; }
.meter { height: 10px; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--line); overflow: hidden; }
.meter-fill { height: 100%; width: 0; border-radius: 999px; background: var(--accent); transition: width 0.2s ease; }

.status-pill { display: inline-flex; align-items: center; min-height: 26px; padding: 0 11px; border-radius: 6px; border: 1px solid var(--line); color: var(--muted); background: var(--surface-2); font-size: 12px; font-weight: 800; font-family: var(--mono); white-space: nowrap; }
.status-pill.is-error { color: var(--danger); border-color: color-mix(in srgb, var(--danger) 40%, var(--line)); }

.action-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 14px; }
.primary-btn, .ghost-btn { min-height: 44px; border-radius: 8px; border: 1px solid var(--line); font-weight: 800; font-family: var(--mono); cursor: pointer; transition: border-color 0.12s, background 0.15s; }
.primary-btn { border-color: var(--accent); background: var(--accent); color: #fff; }
.primary-btn:hover:not(:disabled) { background: color-mix(in srgb, var(--accent) 86%, #000); }
.ghost-btn { background: var(--surface-2); color: var(--ink); }
.ghost-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.primary-btn:disabled, .ghost-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.block-btn { width: 100%; }

/* Disclaimer + Info + FAQ */
.disclaimer {
  display: flex; gap: 12px; align-items: flex-start; margin-top: 18px; padding: 14px 16px;
  border: 1px solid color-mix(in srgb, var(--danger) 35%, var(--line)); border-radius: var(--radius);
  background: color-mix(in srgb, var(--danger) 8%, var(--surface)); color: var(--ink); font-size: 13px; line-height: 1.55;
}
.disclaimer .dz-badge { flex-shrink: 0; font-size: 17px; }
.disclaimer strong { color: var(--ink); }
.disclaimer p { margin: 0; color: var(--muted); }

.info { margin-top: 16px; padding: clamp(20px, 3vw, 30px); border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: var(--shadow); display: grid; gap: 18px; }
.info-intro h2 { font-size: clamp(20px, 2.6vw, 30px); margin: 6px 0 8px; letter-spacing: -0.01em; }
.info-intro p { color: var(--muted); margin: 0; }
.info-intro p + p { margin-top: 10px; }
.faq { display: grid; gap: 10px; }
.faq-2col { grid-template-columns: 1fr 1fr; align-items: start; }
details { border: 1px solid var(--line); border-radius: 10px; background: var(--surface-2); padding: 0 16px; }
summary { cursor: pointer; font-weight: 750; padding: 13px 0; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 12px; color: var(--ink); }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--accent); font-weight: 800; font-size: 17px; }
details[open] summary::after { content: "\2013"; }
details > p { margin: 0 0 14px; color: var(--muted); font-size: 13px; line-height: 1.55; }

.site-footer { max-width: 1480px; margin: 0 auto; padding: 24px clamp(16px, 3vw, 32px) 36px; display: flex; gap: 16px; justify-content: space-between; color: var(--subtle); font-size: 12px; font-family: var(--mono); }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 16px; }

@media (max-width: 1000px) { .lab { grid-template-columns: 1fr; } }
@media (max-width: 720px) {
  .app-shell { padding: 14px; }
  .mini-row, .faq-2col { grid-template-columns: 1fr; }
  .cb-readout { margin-left: 0; width: 100%; }
  .site-header { padding: 0 14px; }
  .home-link { display: none; }
  .site-footer { flex-direction: column; }
}

/* lang-switcher */
.lang-switcher { position: relative; }
.lang-switcher > summary { list-style: none; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; min-height: 34px; padding: 0 12px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface-2, transparent); color: var(--muted); font-size: 13px; font-weight: 700; }
.lang-switcher > summary::-webkit-details-marker { display: none; }
.lang-switcher > summary::marker { content: ""; }
.lang-switcher > summary:hover { color: var(--accent); border-color: var(--accent); }
.lang-menu { position: absolute; right: 0; top: calc(100% + 6px); z-index: 60; display: grid; gap: 2px; max-height: 64vh; overflow: auto; min-width: 190px; padding: 8px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow, 0 14px 36px rgba(0,0,0,.25)); }
.lang-menu a { padding: 7px 10px; border-radius: 8px; color: var(--ink); font-size: 13px; font-weight: 600; white-space: nowrap; }
.lang-menu a:hover { background: var(--surface-2); color: var(--accent); }
@media (max-width: 720px) { .lang-switcher { display: none; } }