/* ===========================
   Wurksy AI – Global Styles
   =========================== */

:root {
  --bg: #0b1020;
  --card: #0f152b;
  --elev: #121939;
  --border: #26314b;
  --text: #e5e7eb;
  --muted: #9aa0a6;
  --accent: #60a5fa;
  --accent-2: #22d3ee;
  --contrast: #FA9B60
  --ring: rgba(96,165,250,.35);
  --shadow: 0 8px 30px rgba(0,0,0,.35);

  --radius: 12px;
  --radius-lg: 16px;

  /* --bubble-user-bg: color-mix(in hsl, var(--accent-2) 10%, var(--card)); */
  --bubble-user-bg: var(--bg);
  --bubble-user-border: color-mix(in hsl, var(--accent-2) 45%, var(--border));
  --bubble-user-text: var(--text);
  --bubble-assistant-bg: color-mix(in hsl, var(--accent) 24%, var(--card));
  --bubble-assistant-border: color-mix(in hsl, var(--accent) 48%, var(--border));
  --bubble-assistant-text: var(--text);

  --surface-1: linear-gradient(180deg, var(--card), var(--elev));
  --surface-2: rgba(255,255,255,.04);
}

:root[data-theme="light"] {
  --bg:#f1f1f1;
  --card:#ffffff;
  --elev:#ffffff;
  --border:#d1d1d1;
  --text:#0f172a;
  --muted:#64748b;
  --accent: #60a5fa;
  --accent-2: #22d3ee;
  --ring: rgba(37,99,235,.25);
  --shadow: 0 8px 30px rgba(2,6,23,.08);
  --surface-2: rgba(0,0,0,.04);

  --bubble-user-bg: color-mix(in hsl, var(--accent-2) 18%, #ffffff);
  --bubble-user-border: color-mix(in hsl, var(--accent-2) 42%, var(--border));
  --bubble-user-text: #0f172a;
  --bubble-assistant-bg: color-mix(in hsl, var(--accent) 16%, #ffffff);
  --bubble-assistant-border: color-mix(in hsl, var(--accent) 42%, var(--border));
  --bubble-assistant-text: #0f172a;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 20% -10%, rgba(34,211,238,.08), transparent 40%),
    radial-gradient(1000px 600px at 100% 0%, rgba(96,165,250,.08), transparent 30%),
    var(--bg);
  color: var(--text);
  font: 15px/1.6 system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, "Helvetica Neue", Arial, sans-serif;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* Focus */
:where(a, button, input, textarea, [tabindex]):focus-visible {
  outline: 0;
  box-shadow: 0 0 0 3px var(--ring);
  border-color: color-mix(in hsl, var(--accent) 40%, var(--border));
}

/* Scrollbars (WebKit) */
*::-webkit-scrollbar { width: 12px; height: 12px; }
*::-webkit-scrollbar-thumb { background: color-mix(in hsl, var(--border) 60%, transparent); border-radius: 999px; }
*::-webkit-scrollbar-track { background: transparent; }

/* ---------------------------
   Header / Topbar
   --------------------------- */
header.topbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  background: color-mix(in hsl, var(--bg) 86%, transparent);
  backdrop-filter: blur(6px) saturate(120%);
}

header .brand { display:flex; gap:.6rem; align-items:center; }
header .brand img { height: 24px; width: 24px; border-radius: 3px;}
header .brand span { font-weight: 600; letter-spacing: .2px; }

/* ---------------------------
   Generic Layout Helpers
   --------------------------- */
main { 
  max-width: 1120px; 
  margin: 24px auto; 
  padding: 0 16px; 
}

.card {
  background: var(--surface-1);
  border:1px solid var(--border);
  border-radius: var(--radius-lg);
  padding:14px;
  box-shadow: var(--shadow);
}

/* .card + .card { margin-top: 16px; } */

h1,h2,h3 { margin:0; }
h1 { font-size: 26px; line-height: 1.2; }
h2 { font-size: 18px; }
p { margin: 8px 0; }
.muted, .doc-subtle { color: var(--muted); font-size: 12px; }
.link { color: var(--accent); text-decoration: none; }
.link:hover { text-decoration: underline; }

/* ============================================
   Generic .grid helper (used in modal etc.)
   ============================================ */

.grid {
  display: grid;
  grid-template-columns: 1.6fr 0.9fr;
  gap: 20px;
  align-items: start;
}

/* Stack generic grids on tablets + phones */
@media (max-width: 1100px) {
  .grid {
    grid-template-columns: 1fr;
  }
}

/* Chat-specific grid override (legacy) */
#chat-grid.grid {
  grid-template-columns: 2fr 1fr;
  gap: 22px;
}

@media (max-width: 1000px) {
  #chat-grid.grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Index layout: hero, brief, chat (vertical)
   ============================================ */

.assignment-layout {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 6px;
}

/* HERO ROW
   Left = Wurksy logo/title/buttons
   Right = assignment meta
*/
.hero-wrap { padding: 18px; }

.hero-row {
  display: grid;
  /* grid-template-columns: minmax(0, 1.6fr) minmax(230px, 0.9fr); */
  grid-template-columns: minmax(0, 1fr) minmax(200px, 320px);
  gap: 24px;
  align-items: center;
}

.hero-main {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}

/* assignment meta box on the right */
.assignment-meta {
  border-radius: 18px;
  padding: 10px 14px;
  background: color-mix(in hsl, var(--card) 96%, transparent);
  border: 1px solid color-mix(in hsl, var(--border) 80%, transparent);
  box-shadow: 0 4px 18px rgba(0,0,0,.3);
  font-size: 13px;
  min-width: 0;
}

.assignment-meta p {
  margin: 0 0 4px 0;
}

/* make the meta text a bit bolder/clearer */
.assignment-meta h3 {
  margin: 0 0 6px 0;
  font-size: 16px;
}
.assignment-meta p:not(:first-child) {
  font-weight: 500;
}

/* keep compact header layout on narrow screens */
@media (max-width: 820px) {
  .hero-row {
    grid-template-columns: minmax(0, 1fr) minmax(170px, 240px);
    gap: 16px;
  }

  .assignment-meta {
    padding: 8px 10px;
    font-size: 12px;
  }

  .assignment-meta h3 {
    font-size: 14px;
  }
}

/* shorten the Brief card visually (scroll if long) */
#assignmentBrief {
  max-height: 220px;
  overflow-y: auto;
}

.brief-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 12px;
  padding: 12px 14px;
  background: color-mix(in hsl, var(--card) 94%, transparent);
  border: 1px solid color-mix(in hsl, var(--border) 86%, transparent);
  border-radius: var(--radius-lg);
  line-height: 1.55;
  flex-wrap: wrap;
}

.brief-label {
  font-weight: 800;
  letter-spacing: 0.08em;
  font-size: 12px;
  color: var(--muted);
  flex: 0 0 auto;
}

.brief-text {
  flex: 1 1 auto;
  font-size: 14px;
}

@media (max-width: 640px) {
  .brief-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }
  .brief-label {
    font-size: 13px;
  }
}

/* ---------------------------
   Inputs & Buttons
   --------------------------- */
input[type="text"],
input[type="search"],
input[type="number"],
input[type="file"],
textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: color-mix(in hsl, var(--card) 88%, transparent);
  color: var(--text);
  outline: none;
  transition: box-shadow .15s ease, border-color .15s ease, background .15s ease;
}

textarea { min-height: 44px; resize: vertical; }

button {
  font: inherit;
  color: var(--text);
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 12px;
  cursor: pointer;
  transition: transform .06s ease, box-shadow .15s ease, background .15s ease;
}
button:hover { box-shadow: 0 0 0 3px var(--ring); }
button:active { transform: translateY(1px); }

button.primary {
  border: 0;
  color: #0b1020;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

.sr-only {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.btn {
  display:inline-flex; align-items:center; justify-content:center; gap:8px;
  padding: 10px 14px;
  border:1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-1);
  color: var(--text);
  text-decoration:none; cursor:pointer;
  transition: box-shadow .15s ease, transform .05s ease;
}

select.btn {
  color: var(--text);
  background-color: var(--card);
  background-image: none;
}

select.btn option {
  color: var(--text);
  background-color: var(--card);
}

select.btn option:hover,
select.btn option:focus,
select.btn option:checked {
  color: var(--text);
  background-color: color-mix(in hsl, var(--accent) 20%, var(--card));
}

.btn:hover { box-shadow: 0 0 0 3px var(--ring); }
.btn:active { transform: translateY(1px); }
.btn-primary { border:0; color:#0b1020; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
.btn-small { padding: 7px 10px; font-size: 13px; }

.ask-input {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  padding: 10px 14px;
  border-radius: 28px;
  margin-top: 4px;
  position: relative;
}

.ask-input.ask-input--compact {
  width: min(100%, 520px);
  min-height: 44px;
  padding: 6px 20px;
  border-radius: 999px;
  margin-left: 0;
  margin-right: auto;
}

.ask-input.ask-input--compact textarea {
  height: 26px;
  max-height: 26px;
  padding: 0 4px;
  line-height: 1.4;
  overflow-y: auto;
}

.ask-input textarea {
  flex: 1;
  padding: 10px 4px;
  border: none;
  background: transparent;
  resize: none;
  max-height: 10em;
  line-height: 1.5;
  font-size: 16px;
}

.ask-input textarea:focus {
  outline: none;
}

.ask-input textarea::placeholder {
  color: var(--muted);
  opacity: 1;
  font-size: 16px;
  font-weight: 400;
}

.ask-input .input-placeholder {
  position: absolute;
  left: 18px;
  right: 200px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: baseline;
  gap: 6px;
  color: var(--muted);
  font-family: inherit;
  font-size: 16px;
  font-weight: 400;
  opacity: 1;
  pointer-events: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ask-input .input-placeholder__prompt {
  font: inherit;
  color: inherit;
}

.ask-input .input-placeholder__hint {
  font: inherit;
  color: inherit;
}

.ask-input textarea:focus + .input-placeholder,
.ask-input textarea:not(:placeholder-shown) + .input-placeholder {
  opacity: 0;
  visibility: hidden;
}

@media (max-width: 720px) {
  .ask-input .input-placeholder {
    right: 150px;
  }
}

.ask-input .send-icon {
  width: 18px;
  height: 18px;
  display: block;
}

.input-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
}

.inline-error {
  margin: 0;
  font-size: 12px;
  color: #ffb3b3;
}

.notes-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 8px;
}

.ai-index-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  margin-top: 6px;
}

.small-print {
  font-size: 12px;
  margin: 0;
}

.flag-cell { position: relative; display: inline-flex; align-items: center; }
.flag-score-btn {
  gap: 6px;
  background: var(--surface-2);
  font-weight: 600;
}
.flag-score-btn .flag-emoji { font-size: 14px; }
.flag-dropdown {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  z-index: 5;
  min-width: 240px;
  max-width: 320px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-1);
  box-shadow: 0 8px 26px rgba(0, 0, 0, 0.36);
}
.flag-dropdown__header { font-weight: 700; margin-bottom: 2px; }
.flag-dropdown__meta { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.flag-detail-list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 4px;
}
.flag-detail-list li { font-size: 13px; line-height: 1.35; }

/* ---------------------------
   Lists (Lectures sidebar)
   --------------------------- */
.list {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-1);
  overflow: auto;
  max-height: calc(100dvh - 180px);
}
.list-item {
  padding: .65rem .75rem;
  border-bottom: 1px solid color-mix(in hsl, var(--border) 70%, transparent);
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}
.list-item:last-child { border-bottom: 0; }
.list-item:hover { background: var(--surface-2); }
.list-item.active { background: color-mix(in hsl, var(--accent) 12%, transparent); }

.results-list .list-item {
  flex-direction: column;
  gap: 4px;
}

.results-list .title {
  font-size: 16px;
  line-height: 1.35;
}

.results-list .muted {
  font-size: 12px;
}

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.result-actions .btn {
  flex: 0 0 auto;
}

.list-item .item-main { flex: 1; min-width: 0; }

/* ---------------------------
   Recommended reading (Research)
   --------------------------- */
.recommended-reading {
  margin: 12px 0 16px;
  padding: 8px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-1);
  font-size: 13px;
}

.recommended-reading h2 {
  margin: 0 0 4px;
  font-size: 16px;
}

.recommended-list {
  margin: 0;
  padding-left: 20px;
  list-style: disc;
  display: grid;
  gap: 6px;
}

.recommended-item {
  color: inherit;
}

.recommended-item-body {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.bib-entry { display: flex; align-items: center; gap: 10px; }
.bib-entry-text { flex: 1; }
.bib-remove {
  width: 32px;
  height: 32px;
  padding: 0;
  border-radius: 50%;
  font-weight: 700;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* ---------------------------
   Lectures Viewer & Chat
   --------------------------- */
.viewer .toolbar {
  background: color-mix(in hsl, var(--card) 92%, transparent);
}
.doc {
  line-height: 1.65;
}
.doc .highlight,
mark.__hit {
  background: color-mix(in hsl, var(--accent) 22%, transparent);
  border-radius: 6px;
  padding: .05rem .2rem;
}

.outline {
  background: color-mix(in hsl, var(--card) 92%, transparent);
  border-right: 1px solid var(--border);
}
.outline .ol { display: grid; gap: .35rem; }
.outline .ol button {
  border-radius: 8px;
  padding: .35rem .5rem;
  background: transparent;
}
.outline .ol button:hover {
  background: var(--surface-2);
}

/* Chat panel */
.chat-wrap {
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.chat-head { display:flex; align-items:baseline; justify-content:space-between; margin-bottom:2px; }
.cap { font-size: 12px; }
.prompt-count {
  white-space: nowrap;
  overflow: visible;
  min-width: 118px;
  display: inline-flex;
  justify-content: flex-end;
  font-variant-numeric: tabular-nums;
}
.cap .prompt-count {
  min-width: 0;
  justify-content: flex-start;
}
.assignment-meta .prompt-count {
  min-width: auto;
  justify-content: flex-start;
}
.locked-notice {
  border: 1px solid #5a2222;
  background: #2a1111;
  color: #ffb3b3;
  border-radius: 8px;
  padding: 6px 10px;
  font-size: 12px;
}
#msgs {
  margin: 6px 0 4px;
  max-height: 55vh;
  overflow: auto;
}

.msg-list:empty {
  display: none;
}

.msg-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.msg {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  background: var(--card);
  color: var(--text);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.12);
}

.msg--user {
  background: var(--bubble-user-bg);
  border-color: var(--bubble-user-border);
  color: var(--bubble-user-text);
}

.msg--assistant {
  background: var(--bubble-assistant-bg);
  border-color: var(--bubble-assistant-border);
  color: var(--bubble-assistant-text);
}

.msg--error {
  background: #2a1111;
  border-color: #5a2222;
  color: #ffb3b3;
}

.msg__meta {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 6px;
}

.msg__body {
  line-height: 1.6;
  word-break: break-word;
}

.msg__body ul {
  list-style: disc;
  padding-left: 18px;
  margin: 6px 0;
}

.msg__body li {
  margin: 4px 0;
}

.research-chat {
  display: grid;
  grid-template-rows: auto 1fr auto auto auto;
  gap: 10px;
}

.research-search {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
}

.research-search .search-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 4px;
}

.research-search input[type="search"] {
  flex: 1;
  min-width: 260px;
}

@media (max-width: 680px) {
  .research-search {
    gap: 10px;
  }

  .research-search .search-actions {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    margin-top: 0;
  }

  .research-search input[type="search"] {
    min-width: 0;
  }
}

.research-chat__msgs {
  min-height: 120px;
  max-height: 45vh;
  overflow: auto;
}

/* ---------------------------
   Nav + Hero
   --------------------------- */
.nav { 
  max-width: 1120px; 
  margin: 0 auto; 
  display:flex; 
  align-items:center; 
  justify-content:space-between; 
  padding: 10px 16px; 
}

.brand { display:flex; align-items:center; gap:10px; text-decoration:none; }
.brand img { height: 26px; }
.brand-text { display:flex; flex-direction:column; line-height:1.1; }
.brand-name { font-weight:700; font-size: 17px; letter-spacing:.2px; color: var(--text); }

.links { display:flex; gap:10px; align-items:center; }
.links a { color: var(--text); text-decoration:none; padding:8px 12px; border-radius: 10px; border:1px solid transparent; }
.links a:hover { border-color: var(--border); background: color-mix(in hsl, var(--card) 80%, transparent); }
.links a.active { border-color: var(--border); background: linear-gradient(90deg, color-mix(in hsl, var(--card) 90%, transparent), color-mix(in hsl, var(--elev) 90%, transparent)); }

.themebtn { 
  border:1px solid var(--border); 
  background: var(--surface-1);
  color: var(--text); 
  border-radius: 10px; 
  padding: 8px 10px; 
  cursor:pointer; 
}
.themebtn:hover { box-shadow: 0 0 0 3px var(--ring); }

.admin-title-button {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  color: inherit;
  cursor: pointer;
}

.admin-title-button:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 4px;
  border-radius: 6px;
}

.admin-logo {
  height: 26px;
  width: 26px;
  border-radius: 4px;
}

/* Base hero container – layout is handled by .hero-row */
.hero {
  margin: 0;
}

/* Title + gradient text etc */
.title-xl { 
  font-size: 44px; 
  line-height: 1.08; 
  font-weight: 900; 
  letter-spacing: .2px; 
  margin: 8px 0 2px; 
}

.gradient-text {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; 
  background-clip: text; 
  color: transparent;
  filter: drop-shadow(0 6px 24px rgba(34,211,238,.12));
}

.slogan-under { margin: 0 0 6px; font-size: 14px; color: var(--muted); }
.subtitle { color: var(--muted); margin-top: 8px; font-size: 14px; max-width: 56ch; }

  .badge {
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:6px 10px;
    border-radius:999px;
    border:1px solid var(--border);
    background: color-mix(in hsl, var(--card) 90%, transparent);
    font-size: 12px;
    width: fit-content;
}