/* ============================================================
   KOMA — Design System
   Inspired by support-chat (Intercom-style)
   ============================================================ */

:root {
  /* Layout */
  --sidebar-w: 56px;
  --sidebar-w-open: 240px;
  --topbar-h: 56px;

  /* Sidebar — dark */
  --sidebar-bg: #0f1117;
  --sidebar-border: rgba(255,255,255,.06);
  --sidebar-text: #8b92a5;
  --sidebar-hover: rgba(255,255,255,.06);
  --sidebar-active: #2563eb;
  --sidebar-active-bg: rgba(37,99,235,.12);

  /* Surfaces */
  --bg: #f5f5f5;
  --surface: #ffffff;
  --surface-2: #fafafa;
  --surface-3: #f0f0f0;
  --border: #e8e8e8;
  --border-2: #d4d4d4;

  /* Text */
  --text-primary: #1a1a1a;
  --text-secondary: #6b6b6b;
  --text-muted: #999999;

  /* Brand */
  --primary: #0057ff;
  --primary-light: #f0f4ff;
  --primary-hover: #0046d4;
  --primary-dark: #003db3;

  /* Semantic */
  --green: #00a67d;
  --green-light: #e6f7f2;
  --red: #e5484d;
  --red-light: #fff0f0;
  --yellow: #f5a623;
  --yellow-light: #fff8eb;

  /* Components */
  --radius: 8px;
  --radius-sm: 6px;
  --radius-lg: 12px;
  --shadow: 0 1px 2px rgba(0,0,0,.05);
  --shadow-md: 0 4px 16px rgba(0,0,0,.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,.12);
  --transition: 0.15s ease;
}

/* RESET */
*, *::before, *::after { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0; height: 100%;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 14px; line-height: 1.5;
  color: var(--text-primary);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
::selection { background: rgba(0,87,255,.15); }

/* LAYOUT */
.layout { display: flex; height: 100vh; overflow: hidden; }

/* SIDEBAR */
.sidebar {
  width: var(--sidebar-w-open);
  min-width: var(--sidebar-w-open);
  background: var(--sidebar-bg);
  display: flex; flex-direction: column;
  overflow: hidden; z-index: 100;
  position: relative;
  transition: width var(--transition-slow), min-width var(--transition-slow);
}
.sidebar.collapsed {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
}
.sidebar.collapsed .sidebar__group-title,
.sidebar.collapsed .sidebar__count,
.sidebar.collapsed .sidebar__item span,
.sidebar.collapsed .sidebar__brand > span,
.sidebar.collapsed .sidebar__profile-info,
.sidebar.collapsed .sidebar__profile-out { display: none; }
.sidebar.collapsed .sidebar__brand { padding: 14px 8px; justify-content: center; }
.sidebar.collapsed .sidebar__brand > i { margin: 0 auto; }
.sidebar.collapsed .sidebar__burger { margin-left: 0; }
.sidebar.collapsed .sidebar__profile { justify-content: center; padding: 12px 8px; }
.sidebar.collapsed .sidebar__item { padding: 11px 0; justify-content: center; }
.sidebar__brand {
  padding: 14px 16px;
  color: #fff;
  font-weight: 600; font-size: 15px;
  letter-spacing: .04em;
  border-bottom: 1px solid var(--sidebar-border);
  display: flex; align-items: center; gap: 10px;
}
.sidebar__brand > span { flex: 1; }
.sidebar__burger {
  background: transparent; border: 0;
  color: rgba(255,255,255,.6);
  width: 32px; height: 32px;
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 18px;
  transition: .15s;
}
.sidebar__burger:hover { background: rgba(255,255,255,.08); color: #fff; }
.sidebar__brand i { color: var(--primary); }
.sidebar__nav { flex: 1; overflow-y: auto; padding: 8px 0; }
.sidebar__group { padding: 6px 0; }
.sidebar__group-title {
  padding: 8px 20px 4px;
  font-size: 11px; text-transform: uppercase; letter-spacing: .08em;
  color: rgba(255,255,255,.4); font-weight: 500;
}
.sidebar__item {
  display: flex; align-items: center; gap: 12px;
  padding: 9px 20px;
  color: var(--sidebar-text);
  font-size: 13.5px;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}
.sidebar__item:hover { background: var(--sidebar-hover); color: #fff; text-decoration: none; }
.sidebar__item.active {
  background: var(--sidebar-active-bg);
  color: #fff;
  border-left: 2px solid var(--sidebar-active);
  padding-left: 18px;
}
.sidebar__item i { width: 16px; height: 16px; flex: 0 0 16px; }
.sidebar__footer {
  padding: 12px 20px;
  border-top: 1px solid var(--sidebar-border);
  color: var(--sidebar-text); font-size: 12px;
}
.sidebar__profile {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px;
  border-top: 1px solid var(--sidebar-border);
  color: rgba(255,255,255,.85);
  text-decoration: none;
  transition: background var(--transition);
}
.sidebar__profile:hover { background: var(--sidebar-hover); text-decoration: none; }
.sidebar__avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 600;
  flex-shrink: 0;
}
.sidebar__profile-info {
  flex: 1; display: flex; flex-direction: column; min-width: 0;
}
.sidebar__profile-name {
  font-size: 13px; color: #fff; font-weight: 500;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sidebar__profile-role {
  font-size: 11px; color: rgba(255,255,255,.45);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.sidebar__profile-out {
  width: 30px; height: 30px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 6px;
  color: rgba(255,255,255,.45);
  font-size: 16px;
  cursor: pointer;
  transition: .15s;
}
.sidebar__profile-out:hover { background: rgba(255,255,255,.08); color: #fff; }
.sidebar__count {
  margin-left: auto;
  font-size: 11px;
  background: rgba(255,255,255,.08);
  color: rgba(255,255,255,.6);
  padding: 1px 7px;
  border-radius: 9px;
}
.sidebar__sub {
  background: rgba(0,0,0,.18);
  border-bottom: 1px solid var(--sidebar-border);
  max-height: 280px;
  overflow-y: auto;
}
.sidebar__sub::-webkit-scrollbar { width: 4px; }
.sidebar__sub::-webkit-scrollbar-thumb { background: rgba(255,255,255,.1); border-radius: 2px; }
.sidebar__sub-item {
  display: block;
  padding: 5px 20px 5px 32px;
  color: rgba(255,255,255,.5);
  font-size: 12.5px;
  text-decoration: none;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: background var(--transition), color var(--transition);
}
.sidebar__sub-item:hover {
  background: rgba(255,255,255,.04);
  color: #fff;
  text-decoration: none;
}

/* MAIN */
.main { flex: 1; display: flex; flex-direction: column; overflow: hidden; }

.topbar {
  height: var(--topbar-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center;
  padding: 0 24px; gap: 16px;
  flex-shrink: 0;
}
.topbar__title { font-size: 15px; font-weight: 500; }
.topbar__spacer { flex: 1; }
.topbar__org {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px; cursor: pointer;
  background: var(--surface);
}
.topbar__org:hover { border-color: var(--border-2); }
.topbar__user {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--text-secondary);
}
.topbar__user .avatar {
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--primary-light); color: var(--primary);
  display: inline-flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 11px;
}

.content {
  flex: 1; overflow-y: auto; padding: 24px;
}

/* CARD / FORMS */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  margin-bottom: 16px;
}
.card__title {
  font-size: 15px; font-weight: 600; margin: 0 0 16px;
}

.form-row { margin-bottom: 14px; }
.form-row label {
  display: block;
  font-size: 12px; color: var(--text-secondary);
  font-weight: 500; margin-bottom: 6px;
  text-transform: uppercase; letter-spacing: .04em;
}
.form-row input[type=text],
.form-row input[type=email],
.form-row input[type=password],
.form-row input[type=number],
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  font-size: 14px; font-family: inherit;
  background: var(--surface);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-row input:focus, .form-row select:focus, .form-row textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,87,255,.1);
}

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  background: var(--surface); color: var(--text-primary);
  font-size: 13.5px; font-weight: 500; cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn--primary {
  background: var(--primary); color: #fff; border-color: var(--primary);
}
.btn--primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn--danger { background: var(--red); color: #fff; border-color: var(--red); }
.btn--danger:hover { background: #c93134; }
.btn--ghost { background: transparent; border-color: transparent; }
.btn--block { display: flex; width: 100%; justify-content: center; }

/* AUTH SCREENS */
.auth {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: 24px; background: var(--bg);
}
.auth__card {
  width: 100%; max-width: 400px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
}
.auth__brand {
  text-align: center; font-size: 22px; font-weight: 600;
  letter-spacing: .04em; margin-bottom: 4px;
}
.auth__brand .dot { color: var(--primary); }
.auth__sub {
  text-align: center; color: var(--text-muted);
  font-size: 13px; margin-bottom: 24px;
}
.auth__error {
  background: var(--red-light); color: var(--red);
  padding: 10px 14px; border-radius: var(--radius-sm);
  font-size: 13px; margin-bottom: 16px;
}
.auth__notice {
  background: var(--yellow-light); color: #8a6500;
  padding: 10px 14px; border-radius: var(--radius-sm);
  font-size: 13px; margin-bottom: 16px;
}
.auth__success {
  background: var(--green-light); color: var(--green);
  padding: 10px 14px; border-radius: var(--radius-sm);
  font-size: 13px; margin-bottom: 16px;
}
.auth__foot {
  text-align: center; font-size: 13px; color: var(--text-secondary);
  margin-top: 16px;
}

/* TABLE */
.table {
  width: 100%; border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.table th, .table td {
  padding: 10px 14px; text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 13.5px;
}
.table th {
  background: var(--surface-2);
  font-weight: 500; color: var(--text-secondary);
  font-size: 12px; text-transform: uppercase; letter-spacing: .04em;
}
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: var(--surface-2); }

/* MISC */
.empty {
  text-align: center; padding: 60px 24px; color: var(--text-muted);
}
.empty h2 { font-size: 36px; margin: 0 0 8px; color: var(--text-primary); }
.muted { color: var(--text-muted); }
.flex { display: flex; }
.gap-8 { gap: 8px; }
.gap-16 { gap: 16px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }

/* MODAL */
.koma-modal__backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.4);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000;
  opacity: 0; transition: opacity .18s;
  padding: 24px;
}
.koma-modal__backdrop.show { opacity: 1; }
.koma-modal {
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%; max-width: 480px;
  max-height: 90vh;
  display: flex; flex-direction: column;
  transform: scale(.96); transition: transform .18s;
}
.koma-modal__backdrop.show .koma-modal { transform: scale(1); }
.koma-modal__head {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; gap: 12px;
}
.koma-modal__title { font-weight: 600; font-size: 15px; flex: 1; }
.koma-modal__x {
  background: transparent; border: 0; cursor: pointer;
  width: 28px; height: 28px; border-radius: 50%;
  font-size: 20px; color: var(--text-muted); line-height: 1;
}
.koma-modal__x:hover { background: var(--surface-3); color: var(--text-primary); }
.koma-modal__body { padding: 20px; overflow-y: auto; }
.koma-modal__foot {
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  display: flex; gap: 8px; align-items: center;
  background: var(--surface-2);
}

/* WYSIWYG EDITOR */
.koma-editor {
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  background: var(--surface);
  overflow: hidden;
}
.koma-editor:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0,87,255,.1); }
.koma-editor__toolbar {
  display: flex; flex-wrap: wrap; align-items: center;
  gap: 2px;
  padding: 6px 8px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.koma-editor__btn {
  width: 30px; height: 30px;
  display: inline-flex; align-items: center; justify-content: center;
  background: transparent; border: 0;
  border-radius: 5px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: background var(--transition), color var(--transition);
}
.koma-editor__btn:hover  { background: var(--surface-3); color: var(--text-primary); }
.koma-editor__btn.is-active { background: var(--primary-light); color: var(--primary); }
.koma-editor__btn svg { display: block; pointer-events: none; }
.koma-editor__btn--ai {
  color: var(--primary);
  background: var(--primary-light);
}
.koma-editor__btn--ai:hover { background: var(--primary); color: #fff; }

/* AI menu */
.koma-ai-menu {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  min-width: 280px;
  z-index: 999;
  padding: 6px;
}
.koma-ai-menu__title {
  padding: 8px 12px 4px;
  font-size: 11px; text-transform: uppercase; letter-spacing: .08em;
  color: var(--text-muted); font-weight: 600;
}
.koma-ai-menu button {
  display: flex; align-items: center; gap: 12px;
  width: 100%; padding: 10px 12px;
  background: transparent; border: 0; border-radius: 6px;
  text-align: left; cursor: pointer;
  color: var(--text-primary);
  transition: background var(--transition);
}
.koma-ai-menu button:hover:not([disabled]) { background: var(--primary-light); color: var(--primary); }
.koma-ai-menu button[disabled] { opacity: .4; cursor: not-allowed; }
.koma-ai-menu button i { font-size: 16px; flex-shrink: 0; }
.koma-ai-menu button span { display: flex; flex-direction: column; min-width: 0; }
.koma-ai-menu button strong { font-size: 13.5px; }
.koma-ai-menu button small { font-size: 11px; color: var(--text-muted); }
.koma-editor__sep {
  width: 1px; height: 20px;
  background: var(--border-2); margin: 0 4px;
}
.koma-editor__area {
  padding: 14px 16px;
  outline: none;
  min-height: 300px;
  max-height: 700px;
  overflow-y: auto;
  font-size: 14px; line-height: 1.6;
}
.koma-editor__area h2 { font-size: 22px; margin: .8em 0 .3em; }
.koma-editor__area h3 { font-size: 18px; margin: .8em 0 .3em; }
.koma-editor__area blockquote {
  border-left: 3px solid var(--primary);
  padding-left: 14px; margin: 14px 0; color: var(--text-secondary);
}
.koma-editor__area pre {
  background: var(--surface-2); padding: 12px;
  border-radius: 4px; font-family: monospace; font-size: 12.5px;
}
.koma-editor__area img { max-width: 100%; height: auto; }
.koma-editor__source {
  width: 100%; padding: 14px 16px;
  border: 0; outline: none;
  font-family: monospace; font-size: 12.5px;
  resize: vertical;
}

/* TAGS INPUT */
.koma-tags {
  position: relative;
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  background: var(--surface);
  padding: 6px 8px 4px;
  min-height: 38px;
}
.koma-tags:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0,87,255,.1); }
.koma-tags__list {
  display: flex; flex-wrap: wrap; gap: 4px;
}
.koma-tags__chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 4px 3px 10px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 14px;
  font-size: 12.5px;
  white-space: nowrap;
}
.koma-tags__chip button {
  background: transparent; border: 0;
  width: 18px; height: 18px; border-radius: 50%;
  font-size: 14px; line-height: 1;
  color: var(--primary); cursor: pointer; padding: 0;
}
.koma-tags__chip button:hover { background: rgba(0,87,255,.18); }
.koma-tags__entry {
  border: 0; outline: 0;
  padding: 4px 4px 6px;
  font-size: 13.5px;
  width: 100%;
  background: transparent;
}
.koma-tags__hidden { display: none; }
.koma-tags__dropdown {
  position: absolute; left: 0; right: 0; top: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-md);
  z-index: 50;
  max-height: 240px; overflow-y: auto;
  margin-top: 4px;
}
.koma-tags__opt, .koma-tags__empty {
  padding: 8px 12px;
  font-size: 13px;
  cursor: pointer;
}
.koma-tags__opt:hover, .koma-tags__empty {
  background: var(--surface-2);
}
.koma-tags__empty { color: var(--text-muted); font-style: italic; }

/* ICON (legacy SVG support) */
.icon { width: 16px; height: 16px; display: inline-block; vertical-align: middle; fill: currentColor; }
.icon-lg { width: 20px; height: 20px; }
/* Bootstrap Icons */
.sidebar__item .bi { font-size: 16px; line-height: 1; flex: 0 0 16px; width: 16px; text-align: center; }
.sidebar__brand .bi { font-size: 18px; }
.topbar__org .bi { font-size: 14px; }
.btn .bi { font-size: 14px; }