/* ===========================================================
   Hesiodex — Core Styles
   Modern dark theme, chat-first layout
   =========================================================== */

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

:root {
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --bg:        #0e0e18;
  --bg-alt:    #12121f;
  --surface:   #16162a;
  --surface2:  #1c1c34;
  --surface3:  #22223a;
  --border:    rgba(255,255,255,0.07);
  --border-h:  rgba(255,255,255,0.12);
  --text:      #e4e4ed;
  --text-dim:  #9898b0;
  --text-faint:#6a6a82;
  --accent:    #6366f1;
  --accent-h:  #818cf8;
  --danger:    #ef4444;
  --success:   #22c55e;
  --sidebar-w: 260px;
  --ref-w:     480px;
}

html { height: 100%; }
body {
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  height: 100%;
  overflow: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ── Login ── */
.login-screen {
  display: flex; align-items: center; justify-content: center;
  position: fixed; inset: 0; background: var(--bg); z-index: 9999;
}
.login-card {
  width: 360px; max-width: calc(100vw - 48px);
  padding: 40px 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  text-align: center;
}
.brand { font-size: 1.4rem; font-weight: 700; color: var(--text); letter-spacing: -0.5px; }
.brand-accent { color: var(--accent); }
.login-sub { color: var(--text-dim); font-size: 0.82rem; margin: 6px 0 28px; }
.login-card input {
  display: block; width: 100%;
  padding: 12px 14px; margin-bottom: 12px;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: 10px; color: var(--text);
  font-size: 15px; font-family: var(--font);
  transition: border-color 0.15s;
}
.login-card input:focus { outline: none; border-color: var(--accent); }
.login-card input::placeholder { color: var(--text-faint); }
.btn-primary {
  display: block; width: 100%;
  padding: 12px; margin-top: 4px;
  background: var(--accent); color: #fff;
  border: none; border-radius: 10px;
  font-size: 0.92rem; font-weight: 600;
  cursor: pointer; transition: background 0.15s;
  font-family: var(--font);
}
.btn-primary:hover { background: var(--accent-h); }
.login-error { color: var(--danger); font-size: 0.82rem; margin-top: 12px; }

/* ── App shell ── */
.app { display: none; height: 100%; }
.app.active { display: flex; }

/* ── Mobile header ── */
.mobile-header {
  display: none;
  position: fixed; top: 0; left: 0; right: 0;
  height: 52px; z-index: 200;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  align-items: center; justify-content: space-between;
  padding: 0 12px;
}
.mobile-menu-btn, .mobile-new-chat {
  background: none; border: none; color: var(--text-dim);
  cursor: pointer; padding: 6px; border-radius: 8px;
}
.mobile-menu-btn:hover, .mobile-new-chat:hover { color: var(--text); background: var(--surface2); }
.mobile-brand { font-size: 1.05rem; font-weight: 700; color: var(--text); }

/* ── Sidebar overlay (mobile) ── */
.sidebar-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.6); z-index: 299;
  opacity: 0; transition: opacity 0.2s;
}
.sidebar-overlay.active { display: block; opacity: 1; }

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-w); height: 100%;
  background: var(--surface);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  flex-shrink: 0; z-index: 300;
}
.sidebar-top {
  padding: 18px 16px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.sidebar-top .brand { margin-bottom: 14px; }
.btn-new-chat {
  display: flex; align-items: center; gap: 8px;
  width: 100%; padding: 9px 14px;
  background: var(--surface2); color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px; cursor: pointer;
  font-size: 0.84rem; font-weight: 500;
  font-family: var(--font);
  transition: background 0.15s, border-color 0.15s;
}
.btn-new-chat:hover { background: var(--surface3); border-color: var(--border-h); }

.sidebar-scroll {
  flex: 1; overflow-y: auto; padding: 8px 0;
}
.sidebar-scroll::-webkit-scrollbar { width: 4px; }
.sidebar-scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }

.sb-section { padding: 8px 12px; }
.sb-title {
  font-size: 0.7rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--text-faint); padding: 4px 6px 6px;
}
.sb-empty { color: var(--text-faint); font-size: 0.8rem; padding: 4px 6px; }

.sb-history { max-height: 200px; overflow-y: auto; }
.history-item {
  display: block; padding: 7px 10px;
  border-radius: 8px; font-size: 0.82rem;
  color: var(--text-dim); cursor: pointer;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  transition: background 0.12s;
}
.history-item:hover { background: var(--surface2); color: var(--text); }
.history-item.active { background: var(--surface3); color: var(--text); }

.sb-link {
  display: flex; align-items: center; gap: 10px;
  width: 100%; padding: 8px 10px;
  background: none; border: none;
  border-radius: 8px; cursor: pointer;
  color: var(--text-dim); font-size: 0.84rem;
  font-family: var(--font); text-decoration: none;
  transition: background 0.12s, color 0.12s;
}
.sb-link:hover { background: var(--surface2); color: var(--text); }
.sb-link span { flex: 1; text-align: left; }
.sb-chevron { opacity: 0.4; flex-shrink: 0; }
.sb-link:hover .sb-chevron { opacity: 0.7; }
.sb-link.disabled { cursor: default; opacity: 0.45; }
.sb-link.disabled:hover { background: none; color: var(--text-dim); }
.badge-soon {
  font-size: 0.65rem; padding: 2px 7px;
  background: var(--surface3); color: var(--text-faint);
  border-radius: 6px; font-weight: 500;
}

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: space-between;
}
.sb-user { font-size: 0.78rem; color: var(--text-dim); }
.btn-logout {
  display: flex; align-items: center; gap: 6px;
  background: none; border: none;
  color: var(--text-faint); font-size: 0.78rem;
  cursor: pointer; padding: 6px 8px;
  border-radius: 6px; font-family: var(--font);
  transition: color 0.12s, background 0.12s;
}
.btn-logout:hover { color: var(--text); background: var(--surface2); }

/* ── Reference Panel ── */
.ref-backdrop {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.4); z-index: 400;
}
.ref-backdrop.active { display: block; }
.ref-panel {
  position: fixed; top: 0; right: 0; bottom: 0;
  width: var(--ref-w); max-width: 100vw;
  background: var(--surface);
  border-left: 1px solid var(--border);
  z-index: 401;
  display: flex; flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.25s cubic-bezier(0.4,0,0.2,1);
}
.ref-panel.open { transform: translateX(0); }

.ref-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.ref-title { font-size: 1rem; font-weight: 600; color: var(--text); }
.ref-close {
  background: none; border: none; color: var(--text-dim);
  cursor: pointer; padding: 4px; border-radius: 6px;
}
.ref-close:hover { color: var(--text); background: var(--surface2); }

.ref-section { display: flex; flex-direction: column; flex: 1; overflow: hidden; }
.ref-search-wrap {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
}
.ref-search-wrap svg { color: var(--text-faint); flex-shrink: 0; }
.ref-search-wrap input {
  flex: 1; background: none; border: none;
  color: var(--text); font-size: 0.88rem;
  font-family: var(--font);
}
.ref-search-wrap input:focus { outline: none; }
.ref-search-wrap input::placeholder { color: var(--text-faint); }
.ref-body { flex: 1; overflow-y: auto; padding: 16px 20px; }
.ref-body::-webkit-scrollbar { width: 4px; }
.ref-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
.ref-empty, .ref-loading { color: var(--text-faint); font-size: 0.85rem; }

/* ── SOP / Handbook content in ref panel ── */
.sop-breadcrumb {
  display: flex; align-items: center; gap: 6px;
  font-size: 0.78rem; color: var(--text-faint);
  margin-bottom: 12px; flex-wrap: wrap;
}
.sop-breadcrumb a { color: var(--accent); cursor: pointer; text-decoration: none; }
.sop-breadcrumb a:hover { text-decoration: underline; }
.sop-breadcrumb .sep { color: var(--text-faint); }

.dept-grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(180px,1fr)); gap: 10px; }
.dept-card {
  padding: 16px; background: var(--surface2);
  border: 1px solid var(--border); border-radius: 12px;
  cursor: pointer; transition: border-color 0.15s, background 0.15s;
}
.dept-card:hover { border-color: var(--border-h); background: var(--surface3); }
.dept-card h3 { font-size: 0.88rem; font-weight: 600; margin-top: 10px; color: var(--text); }
.dept-count { font-size: 0.75rem; color: var(--text-faint); margin-top: 2px; }
.dept-icon { width: 36px; height: 36px; border-radius: 8px; display: flex; align-items: center; justify-content: center; }

.sop-scope-filters {
  display: flex; gap: 6px; padding: 8px 20px 0;
}
.scope-filter-btn {
  font-size: 0.72rem; font-weight: 600; padding: 4px 10px;
  border-radius: 20px; border: 1px solid var(--border);
  background: transparent; color: var(--text-dim);
  cursor: pointer; transition: all 0.12s;
}
.scope-filter-btn:hover { border-color: var(--border-h); color: var(--text); }
.scope-filter-btn.active { background: var(--accent); border-color: var(--accent); color: #fff; }

.scope-badge {
  font-size: 0.65rem; font-weight: 700; padding: 2px 6px;
  border-radius: 4px; flex-shrink: 0; letter-spacing: 0.02em;
}
.scope-badge.std { background: #1e3a5f; color: #60a5fa; }
.scope-badge.ncr { background: #3b1f0e; color: #fb923c; }

.sop-list { display: flex; flex-direction: column; gap: 2px; }
.sop-list-item {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 12px; border-radius: 8px;
  cursor: pointer; transition: background 0.12s;
}
.sop-list-item:hover { background: var(--surface2); }
.sop-num { font-size: 0.78rem; font-weight: 600; color: var(--accent); min-width: 60px; }
.sop-title { flex: 1; font-size: 0.85rem; color: var(--text); }
.sop-arrow { color: var(--text-faint); font-size: 0.75rem; }
.sop-dept { color: var(--text-faint); font-size: 0.72rem; flex-shrink: 0; }

.sop-detail-header { margin-bottom: 16px; }
.sop-detail-header h1 { font-size: 1.05rem; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.sop-meta { display: flex; flex-wrap: wrap; gap: 12px; font-size: 0.78rem; color: var(--text-dim); }
.sop-cross-refs { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.sop-cross-ref-tag {
  font-size: 0.72rem; padding: 3px 8px;
  background: var(--accent); color: #fff;
  border-radius: 5px; cursor: pointer; font-weight: 600;
}
.sop-body { font-size: 0.88rem; line-height: 1.7; color: var(--text-dim); }
.sop-body h1,.sop-body h2,.sop-body h3 { color: var(--text); margin: 16px 0 8px; }
.sop-body p { margin-bottom: 8px; }
.sop-body ul,.sop-body ol { margin: 8px 0 8px 20px; }
.sop-body li { margin-bottom: 4px; }
.sop-body table { width: 100%; border-collapse: collapse; font-size: 0.82rem; margin: 12px 0; }
.sop-body th,.sop-body td { padding: 8px 10px; border: 1px solid var(--border); text-align: left; }
.sop-body th { background: var(--surface2); color: var(--text); font-weight: 600; }

/* ── Main panel ── */
.main {
  flex: 1; height: 100%;
  display: flex; flex-direction: column;
  background: var(--bg);
  overflow: hidden;
}

.hidden { display: none !important; }

/* ── Document Library ── */
.doc-list-item { flex-wrap: wrap; }
.doc-item-main { display: flex; align-items: center; gap: 8px; width: 100%; }
.doc-item-meta { display: flex; gap: 12px; width: 100%; font-size: 0.75rem; color: var(--text-faint); margin-top: 2px; }
.tier-badge { font-size: 0.65rem; font-weight: 600; padding: 2px 6px; border-radius: 3px; text-transform: uppercase; letter-spacing: 0.03em; white-space: nowrap; }
.tier-corp { background: rgba(99,102,241,0.15); color: var(--accent-h); }
.tier-fran { background: rgba(34,197,94,0.12); color: var(--success); }
.doc-description { font-size: 0.85rem; color: var(--text-dim); margin-top: 8px; line-height: 1.5; }
.doc-actions { margin: 16px 0; display: flex; gap: 8px; }
.doc-download-btn { display: inline-flex; align-items: center; gap: 6px; font-size: 0.82rem; }
.doc-linked-sops { margin-top: 16px; }
.doc-linked-sops h3 { font-size: 0.82rem; font-weight: 600; color: var(--text-dim); margin-bottom: 8px; }
.doc-sop-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.sop-chip { font-size: 0.75rem; padding: 4px 10px; border-radius: 12px; background: var(--surface3); color: var(--accent-h); cursor: pointer; transition: background 0.15s; }
.sop-chip:hover { background: rgba(99,102,241,0.2); }
.sop-chip-unconfirmed { border: 1px dashed var(--border-h); opacity: 0.75; }
.sop-chip-unconfirmed em { font-size: 0.65rem; color: var(--text-faint); }
.doc-empty-state { text-align: center; padding: 2rem 1rem; }

/* Upload area */
.doc-upload-area { padding: 12px 16px; border-top: 1px solid var(--border); }
.doc-upload-btn { display: flex; align-items: center; gap: 6px; width: 100%; padding: 10px; border-radius: 8px; border: 1px dashed var(--border-h); background: transparent; color: var(--text-dim); font-size: 0.82rem; cursor: pointer; justify-content: center; transition: all 0.15s; }
.doc-upload-btn:hover { border-color: var(--accent); color: var(--accent); background: rgba(99,102,241,0.05); }

/* Upload form */
.doc-upload-form { padding: 4px 0; }
.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 0.78rem; font-weight: 600; color: var(--text-dim); margin-bottom: 5px; }
.form-group input[type="text"],
.form-group input[type="file"],
.form-group select,
.form-group textarea {
  width: 100%; padding: 8px 10px; border-radius: 6px;
  border: 1px solid var(--border); background: var(--surface);
  color: var(--text); font-size: 0.85rem; font-family: var(--font);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--accent); }
.form-group input[type="file"] { padding: 6px; font-size: 0.78rem; }
.form-group select { appearance: auto; }
.form-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
.btn-secondary { padding: 8px 16px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface2); color: var(--text-dim); font-size: 0.82rem; cursor: pointer; }
.btn-secondary:hover { background: var(--surface3); color: var(--text); }
.doc-upload-status { font-size: 0.8rem; margin-top: 10px; text-align: center; min-height: 1.2em; }

/* Drop zone */
.drop-zone {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 28px 16px; border-radius: 8px;
  border: 2px dashed var(--border-h); background: var(--surface);
  cursor: pointer; transition: all 0.2s ease; text-align: center; gap: 4px;
}
.drop-zone:hover { border-color: var(--accent); background: rgba(99,102,241,0.04); }
.drop-zone--over { border-color: var(--accent); background: rgba(99,102,241,0.08); box-shadow: 0 0 0 3px rgba(99,102,241,0.12); }
.drop-zone--has-file { border-color: #22c55e; background: rgba(34,197,94,0.05); }
.drop-zone svg { color: var(--text-dim); margin-bottom: 4px; }
.drop-zone-text { font-size: 0.85rem; color: var(--text-dim); margin: 0; }
.drop-zone-link { color: var(--accent); font-weight: 600; text-decoration: underline; }
.drop-zone-hint { font-size: 0.72rem; color: var(--text-dim); opacity: 0.7; margin: 2px 0 0; }
.drop-zone-filename { font-size: 0.8rem; color: var(--accent); font-weight: 600; margin: 6px 0 0; min-height: 1.1em; }

@media (min-width: 1200px) {
  :root { --ref-w: 560px; }
}