/* FlexAppeal -- marcdeller.com brand theme.
   Hand-written, no framework, no build step. Same palette as the CLI's ANSI
   colours and the generated bundle's console output, so the whole toolchain
   looks like one thing. */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Roboto+Mono:wght@400;500&display=swap');

:root {
  --md-primary:        #1e73be;
  --md-primary-dark:   #155a9c;
  --md-primary-light:  #4a9fd4;

  --md-bg:             #ffffff;
  --md-bg-alt:         #f4f7fb;
  --md-surface:        #ffffff;
  --md-border:         #dde4ed;

  --md-text:           #1a1a2e;
  --md-text-muted:     #6b7c93;
  --md-text-light:     #ffffff;

  --md-accent-green:   #00d084;
  --md-accent-orange:  #ff6900;
  --md-accent-purple:  #9b51e0;
  --md-accent-amber:   #fcb900;
  --md-accent-red:     #d63638;

  --md-shadow-sm:      6px 6px 9px rgba(0,0,0,0.12);
  --md-shadow-md:      12px 12px 50px rgba(0,0,0,0.18);
  --md-radius:         8px;
  --md-radius-lg:      16px;
}

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

body {
  margin: 0;
  overflow-x: hidden;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  font-size: 15px;
  line-height: 1.6;
  color: var(--md-text);
  background: var(--md-bg-alt);
}

code, pre, .mono, .md-symbol { font-family: 'Roboto Mono', monospace; }
img, svg, canvas { max-width: 100%; height: auto; }
a { color: var(--md-primary); }

/* ---------------------------------------------------------------- header */

.md-header {
  background: linear-gradient(135deg, var(--md-primary-dark) 0%, var(--md-primary) 100%);
  color: var(--md-text-light);
  box-shadow: var(--md-shadow-sm);
  position: sticky; top: 0; z-index: 100;
}
.md-header-inner {
  max-width: 1400px; margin: 0 auto; padding: 12px 24px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.md-header-brand a {
  display: flex; align-items: center; gap: 8px;
  color: rgba(255,255,255,0.9); text-decoration: none;
  font-weight: 600; font-size: 13px; letter-spacing: 0.02em;
  transition: color 0.2s; white-space: nowrap;
}
.md-header-brand a:hover { color: #fff; }
.md-logo-dot {
  width: 10px; height: 10px; background: var(--md-accent-amber);
  border-radius: 50%; flex-shrink: 0;
}
.md-header-title { flex: 1; min-width: 0; }
.md-header-title h1 {
  font-size: 16px; font-weight: 700; color: #fff; margin: 0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.md-header-sub {
  font-weight: 400; font-size: 12px; opacity: 0.75; margin-left: 10px;
}
.md-header-links { display: flex; gap: 10px; flex-shrink: 0; flex-wrap: wrap; }
.md-header-links a {
  color: rgba(255,255,255,0.85); text-decoration: none; font-size: 12px;
  padding: 4px 12px; border: 1px solid rgba(255,255,255,0.3);
  border-radius: 20px; transition: all 0.2s; white-space: nowrap;
}
.md-header-links a:hover {
  background: rgba(255,255,255,0.15); color: #fff; border-color: rgba(255,255,255,0.6);
}

/* ------------------------------------------------------------------ tabs */

.md-tabs { background: var(--md-surface); border-bottom: 1px solid var(--md-border); }
.md-tabs-inner { max-width: 1400px; margin: 0 auto; padding: 0 24px; display: flex; gap: 8px; }
.md-tab {
  display: flex; align-items: baseline; gap: 8px;
  padding: 14px 20px; text-decoration: none; color: var(--md-text-muted);
  font-weight: 600; border-bottom: 3px solid transparent; transition: all 0.2s;
}
.md-tab:hover { color: var(--md-primary); background: var(--md-bg-alt); }
.md-tab.is-active { color: var(--md-primary); border-bottom-color: var(--md-primary); }
.md-tab-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 20px; height: 20px; border-radius: 50%;
  background: var(--md-border); color: var(--md-text-muted);
  font-size: 11px; font-weight: 700;
}
.md-tab.is-active .md-tab-num { background: var(--md-primary); color: #fff; }
.md-tab-hint { font-weight: 400; font-size: 12px; opacity: 0.8; }

/* ------------------------------------------------------------------ main */

.md-main { max-width: 1400px; margin: 0 auto; padding: 24px; }

.md-card {
  background: var(--md-surface); border: 1px solid var(--md-border);
  border-radius: var(--md-radius); padding: 24px; box-shadow: var(--md-shadow-sm);
  margin-bottom: 20px;
}
.md-intro { max-width: 760px; margin-left: auto; margin-right: auto; }
.md-intro h2 { margin-top: 0; }

.md-layout { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 24px; align-items: start; }
.md-form { min-width: 0; }

/* --------------------------------------------------------------- sources */

.md-source-tabs { display: grid; gap: 10px; margin: 20px 0; }
.md-source-tab { display: block; cursor: pointer; }
.md-source-tab input { position: absolute; opacity: 0; pointer-events: none; }
.md-source-tab span {
  display: block; padding: 12px 16px; border: 2px solid var(--md-border);
  border-radius: var(--md-radius); transition: all 0.15s;
}
.md-source-tab span strong { display: block; }
.md-source-tab span em { display: block; font-style: normal; font-size: 13px; color: var(--md-text-muted); }
.md-source-tab input:checked + span { border-color: var(--md-primary); background: var(--md-bg-alt); }
.md-source-tab input:focus-visible + span { outline: 2px solid var(--md-primary); outline-offset: 2px; }
.md-source-inputs { margin: 20px 0; }
.md-source-inputs label { display: block; font-weight: 600; margin-bottom: 6px; }

/* ---------------------------------------------------------------- groups */

.md-group {
  background: var(--md-surface); border: 1px solid var(--md-border);
  border-radius: var(--md-radius); margin-bottom: 12px; overflow: hidden;
}
.md-group > summary {
  padding: 14px 18px; cursor: pointer; display: flex; align-items: baseline;
  gap: 10px; flex-wrap: wrap; font-weight: 600; list-style: none;
}
.md-group > summary::-webkit-details-marker { display: none; }
.md-group > summary::before {
  content: '▸'; color: var(--md-text-muted); transition: transform 0.15s;
}
.md-group[open] > summary::before { transform: rotate(90deg); }
.md-group > summary:hover { background: var(--md-bg-alt); }
.md-group-icon { font-size: 16px; }
.md-group-title { color: var(--md-text); }
.md-group-blurb { font-weight: 400; font-size: 13px; color: var(--md-text-muted); }
.md-group-body { padding: 4px 18px 18px; }

.md-advanced { margin-top: 12px; border-top: 1px dashed var(--md-border); }
.md-advanced > summary {
  padding: 10px 0; cursor: pointer; font-size: 13px; font-weight: 600;
  color: var(--md-text-muted);
}
.md-advanced > summary:hover { color: var(--md-primary); }
.md-advanced .md-group-body { padding: 0; }

/* ---------------------------------------------------------------- fields */

.md-field { padding: 14px 0; border-bottom: 1px solid var(--md-bg-alt); }
.md-field:last-child { border-bottom: none; }
.md-field[hidden] { display: none; }
.md-field > label {
  display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap;
  font-weight: 600; margin-bottom: 6px;
}
.md-units { font-weight: 400; font-size: 12px; color: var(--md-text-muted); }
.md-symbol {
  font-size: 11px; color: var(--md-text-muted); background: var(--md-bg-alt);
  padding: 1px 6px; border-radius: 4px;
}
.md-badge {
  font-size: 10px; text-transform: uppercase; letter-spacing: 0.05em;
  padding: 2px 7px; border-radius: 10px; font-weight: 700;
}
.md-badge-warn { background: var(--md-accent-amber); color: #4a3800; }

.md-field input[type=text],
.md-field input[type=number],
.md-field select,
.md-field textarea,
.md-source-inputs input[type=text] {
  width: 100%; max-width: 460px; padding: 8px 10px;
  border: 1px solid var(--md-border); border-radius: 6px;
  font-family: inherit; font-size: 14px; background: var(--md-surface); color: var(--md-text);
}
.md-field textarea { font-family: 'Roboto Mono', monospace; font-size: 13px; }
.md-pdbid { max-width: 120px !important; text-transform: uppercase; letter-spacing: 0.15em; }
.md-field input:focus, .md-field select:focus, .md-field textarea:focus {
  outline: none; border-color: var(--md-primary); box-shadow: 0 0 0 3px rgba(30,115,190,0.12);
}
.md-field.has-error input, .md-field.has-error select { border-color: var(--md-accent-red); }

.md-help { font-size: 13px; color: var(--md-text-muted); margin: 6px 0 0; max-width: 640px; }
.md-choice-help {
  font-size: 12px; color: var(--md-primary); margin: 6px 0 0;
  padding-left: 10px; border-left: 2px solid var(--md-primary-light);
}
.md-field-error { font-size: 13px; color: var(--md-accent-red); margin: 6px 0 0; font-weight: 500; }
.md-empty { font-size: 13px; color: var(--md-text-muted); font-style: italic; }

/* Switch */
.md-switch { display: inline-block; cursor: pointer; }
.md-switch input { position: absolute; opacity: 0; pointer-events: none; }
.md-switch-track {
  display: block; width: 44px; height: 24px; border-radius: 12px;
  background: var(--md-border); position: relative; transition: background 0.15s;
}
.md-switch-track::after {
  content: ''; position: absolute; top: 3px; left: 3px;
  width: 18px; height: 18px; border-radius: 50%; background: #fff;
  transition: transform 0.15s; box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.md-switch input:checked + .md-switch-track { background: var(--md-accent-green); }
.md-switch input:checked + .md-switch-track::after { transform: translateX(20px); }
.md-switch input:focus-visible + .md-switch-track { outline: 2px solid var(--md-primary); outline-offset: 2px; }

/* Checkbox group */
.md-checkgroup { display: flex; flex-wrap: wrap; gap: 8px; }
.md-check { cursor: pointer; }
.md-check input { position: absolute; opacity: 0; pointer-events: none; }
.md-check span {
  display: block; padding: 7px 12px; border: 1px solid var(--md-border);
  border-radius: 6px; font-size: 13px; transition: all 0.15s;
}
.md-check span em { display: block; font-style: normal; font-size: 11px; color: var(--md-text-muted); }
.md-check input:checked + span {
  border-color: var(--md-primary); background: rgba(30,115,190,0.07); font-weight: 600;
}
.md-check input:focus-visible + span { outline: 2px solid var(--md-primary); outline-offset: 2px; }

/* ------------------------------------------------------- structure panel */

.md-structure-summary h2 { margin: 0 0 4px; font-size: 18px; }
.md-meta { font-size: 13px; color: var(--md-text-muted); margin: 0 0 12px; }
.md-citation { font-family: 'Roboto Mono', monospace; font-size: 12px; }
.md-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.md-chip {
  font-size: 12px; padding: 3px 10px; border-radius: 12px;
  background: var(--md-bg-alt); border: 1px solid var(--md-border);
}
.md-chip em { font-style: normal; color: var(--md-text-muted); }
.md-chip b { color: var(--md-accent-orange); }
.md-chip-protein { border-color: var(--md-primary-light); }
.md-chip-ss { border-color: var(--md-accent-amber); }
.md-note {
  font-size: 13px; margin: 10px 0 0; padding: 10px 14px;
  background: rgba(252,185,0,0.10); border-left: 3px solid var(--md-accent-amber);
  border-radius: 4px;
}

/* ---------------------------------------------------------------- issues */

.md-issues { margin-bottom: 20px; }
.md-issue {
  display: flex; gap: 10px; padding: 12px 16px; border-radius: var(--md-radius);
  margin-bottom: 8px; font-size: 14px;
}
.md-issue code { font-size: 12px; }
.md-issue-error { background: rgba(214,54,56,0.08); border-left: 3px solid var(--md-accent-red); }
.md-issue-warning { background: rgba(252,185,0,0.10); border-left: 3px solid var(--md-accent-amber); }

/* --------------------------------------------------------------- readout */

.md-readout {
  position: sticky; top: 120px;
  background: var(--md-surface); border: 1px solid var(--md-border);
  border-radius: var(--md-radius); padding: 18px; box-shadow: var(--md-shadow-sm);
}
.md-readout h3 { margin: 0 0 12px; font-size: 14px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--md-text-muted); }
.md-readout dl { margin: 0; }
.md-readout dl > div {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: 10px; padding: 7px 0; border-bottom: 1px solid var(--md-bg-alt);
}
.md-readout dt { font-size: 13px; color: var(--md-text-muted); }
.md-readout dd { margin: 0; font-weight: 600; font-family: 'Roboto Mono', monospace; font-size: 13px; text-align: right; }
.md-readout-time { border-bottom: none !important; margin-top: 6px; }
.md-readout-time dt { font-weight: 600; color: var(--md-text); }
.md-readout-time dd { color: var(--md-primary); font-size: 16px; }
.md-readout-note { font-size: 11px; color: var(--md-text-muted); margin: 12px 0 0; line-height: 1.4; }
.md-readout-issues:not(:empty) { margin-top: 12px; }
.md-readout-issue { font-size: 12px; padding: 8px 10px; border-radius: 4px; margin-bottom: 6px; }
.md-readout-issue.is-error { background: rgba(214,54,56,0.08); color: #8a1f20; }
.md-readout-issue.is-warning { background: rgba(252,185,0,0.12); color: #6b5000; }
.md-readout.is-stale { opacity: 0.55; }

/* --------------------------------------------------------------- buttons */

.md-button {
  display: inline-block; padding: 11px 24px; border-radius: var(--md-radius);
  border: 1px solid var(--md-border); background: var(--md-surface);
  color: var(--md-text); font-family: inherit; font-size: 15px; font-weight: 600;
  cursor: pointer; text-decoration: none; transition: all 0.15s;
}
.md-button:hover { border-color: var(--md-primary); color: var(--md-primary); }
.md-button-primary {
  background: var(--md-primary); border-color: var(--md-primary); color: #fff;
}
.md-button-primary:hover { background: var(--md-primary-dark); border-color: var(--md-primary-dark); color: #fff; }
.md-submit { padding: 20px 0 40px; text-align: center; }
.md-submit p { font-size: 13px; color: var(--md-text-muted); margin: 10px 0 0; }

/* ----------------------------------------------------------------- error */

.md-error { text-align: center; max-width: 560px; margin: 60px auto; }
.md-error-code { font-size: 56px; font-weight: 700; color: var(--md-border); margin: 0; line-height: 1; }

/* ---------------------------------------------------------------- footer */

.md-footer { text-align: center; padding: 30px 20px; color: var(--md-text-muted); font-size: 13px; }
.md-footer p { margin: 4px 0; }
.md-footer-meta { font-size: 12px; opacity: 0.8; }

/* ---------------------------------------------------------------- mobile */

@media (max-width: 1000px) {
  .md-layout { grid-template-columns: 1fr; }
  .md-readout { position: static; order: -1; }
  .md-readout dl { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 0 16px; }
}

@media (max-width: 768px) {
  .md-main { padding: 16px; }
  .md-card { padding: 16px; }
  .md-group-body { padding: 4px 14px 14px; }
  .md-tab-hint { display: none; }
  .md-tabs-inner { padding: 0 12px; }
}

@media (max-width: 600px) {
  .md-header-inner { padding: 10px 16px; gap: 8px; }
  .md-header-title h1 { font-size: 14px; }
  .md-header-sub { display: none; }
  .md-logo-text { display: none; }
  .md-header-links a { font-size: 11px; padding: 3px 8px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; }
}

/* ================================================================ analysis */

.md-drop {
  display: flex; flex-direction: column; align-items: center; gap: 6px;
  padding: 40px 20px; margin: 20px 0;
  border: 2px dashed var(--md-border); border-radius: var(--md-radius);
  cursor: pointer; transition: all 0.15s; text-align: center;
}
.md-drop:hover, .md-drop.is-over {
  border-color: var(--md-primary); background: var(--md-bg-alt);
}
.md-drop-icon { font-size: 28px; }
.md-drop em { font-style: normal; font-size: 13px; color: var(--md-text-muted); }

.md-run-header h2 { margin: 0 0 6px; font-size: 20px; }
.md-run-desc { margin: 0 0 8px; color: var(--md-text); }

/* Stat tiles -- where the story is one number, it is not a chart. */
.md-tiles {
  display: grid; gap: 12px; margin-bottom: 20px;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
}
.md-tile {
  background: var(--md-surface); border: 1px solid var(--md-border);
  border-radius: var(--md-radius); padding: 14px 16px; box-shadow: var(--md-shadow-sm);
}
.md-tile dt {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--md-text-muted); margin-bottom: 4px;
}
.md-tile dd {
  margin: 0; font-family: 'Roboto Mono', monospace; font-size: 24px;
  font-weight: 500; color: var(--md-text); line-height: 1.2;
}
.md-tile-unit { font-size: 13px; color: var(--md-text-muted); margin-left: 4px; }
.md-tile p { margin: 4px 0 0; font-size: 11px; color: var(--md-text-muted); line-height: 1.4; }

.md-panel h3, .md-viewer-card h3 { margin: 0 0 4px; font-size: 16px; }
.md-panel-blurb {
  margin: 0 0 14px; font-size: 13px; color: var(--md-text-muted); max-width: 70ch;
}
.md-plot { width: 100%; height: 340px; }
.md-plot-small { height: 210px; }
.md-plot-error { font-size: 13px; color: var(--md-accent-red); }
.md-panel.is-wide .md-plot { height: 460px; }
.md-multiples {
  display: grid; gap: 10px;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

#molstar-viewer {
  position: relative; width: 100%; height: 480px;
  border: 1px solid var(--md-border); border-radius: var(--md-radius);
  overflow: hidden; background: var(--md-bg-alt);
}
.md-viewer-status { font-size: 12px; color: var(--md-text-muted); margin: 10px 0 0; }
.md-viewer-status.is-error { color: var(--md-accent-red); }

/* A table view is the accessibility fallback: identity is never colour-alone,
   and every plotted number is readable as text somewhere on the page. */
.md-details { overflow-x: auto; }
.md-table { border-collapse: collapse; width: 100%; font-size: 13px; }
.md-table caption {
  text-align: left; font-size: 12px; color: var(--md-text-muted);
  padding-bottom: 8px;
}
.md-table th, .md-table td {
  text-align: left; padding: 7px 12px 7px 0;
  border-bottom: 1px solid var(--md-bg-alt);
}
.md-table th { font-weight: 600; color: var(--md-text-muted); white-space: nowrap; }
.md-table td { font-family: 'Roboto Mono', monospace; }

@media (max-width: 768px) {
  .md-plot { height: 280px; }
  .md-panel.is-wide .md-plot { height: 320px; }
  #molstar-viewer { height: 360px; }
  .md-tile dd { font-size: 20px; }
}

@media print {
  .md-header, .md-tabs, .md-drop, .md-footer { display: none; }
  .md-card { break-inside: avoid; box-shadow: none; }
}

.md-reanalyse-form { max-width: 640px; }
.md-reanalyse-status { font-size: 13px; margin: 12px 0 0; min-height: 20px; }
.md-reanalyse-status.is-ok { color: var(--md-accent-green); }
.md-reanalyse-status.is-error { color: var(--md-accent-red); }
.md-reanalyse-panel { padding: 0; margin-top: 18px; border-top: 1px solid var(--md-bg-alt); }
.md-reanalyse-panel h4 { margin: 14px 0 4px; font-size: 14px; }