/* ── Theme variables ── */
:root {
  --bg-body: #0f1117;
  --bg-sidebar: #13152a;
  --bg-card: #1a1d2e;
  --bg-input: #262a3d;
  --bg-hover: #22263a;
  --border: #1f2233;
  --border-strong: #333;
  --text-primary: #e0e0e0;
  --text-secondary: #8b8fa3;
  --text-heading: #fff;
  --accent: #4ecca3;
  --accent-hover: #3dbb92;
  --danger: #e74c3c;
  --warn: #f0a500;
  --info: #5b9cf5;
  --flash-error-bg: #3a1a1a;
  --flash-error-border: #5a2a2a;
  --flash-info-bg: #1a2a3a;
  --flash-info-border: #2a3a5a;
  --flash-success-bg: #1a3a2a;
  --flash-success-border: #2a5a3a;
  --badge-won-bg: #1a3a2a;
  --badge-setter-bg: #1a2a4a;
  --upload-hover-bg: #1a2a25;
  --shadow: rgba(0,0,0,0.4);
  --chat-user-text: #0f1117;
}

:root.light {
  --bg-body: #f0f2f5;
  --bg-sidebar: #ffffff;
  --bg-card: #ffffff;
  --bg-input: #f0f2f5;
  --bg-hover: #e8eaed;
  --border: #e0e0e0;
  --border-strong: #ccc;
  --text-primary: #1a1a2e;
  --text-secondary: #5f6368;
  --text-heading: #1a1a2e;
  --accent: #2a9d6f;
  --accent-hover: #238a60;
  --danger: #d93025;
  --warn: #e8a000;
  --info: #1a73e8;
  --flash-error-bg: #fce8e6;
  --flash-error-border: #f5c6cb;
  --flash-info-bg: #e8f0fe;
  --flash-info-border: #c6dafc;
  --flash-success-bg: #e6f4ea;
  --flash-success-border: #b7dfbf;
  --badge-won-bg: #e6f4ea;
  --badge-setter-bg: #e8f0fe;
  --upload-hover-bg: #e6f4ea;
  --shadow: rgba(0,0,0,0.08);
  --chat-user-text: #ffffff;
}

/* ── Reset & Base ── */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-body); color: var(--text-primary);
  min-height: 100vh;
  transition: background 0.2s, color 0.2s;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Layout ── */
.app-layout { display: flex; min-height: 100vh; }

.sidebar {
  width: 220px; background: var(--bg-sidebar); padding: 24px 0;
  display: flex; flex-direction: column; position: fixed;
  top: 0; left: 0; bottom: 0; z-index: 100;
  border-right: 1px solid var(--border);
  transition: background 0.2s, border-color 0.2s;
}
.sidebar .logo {
  padding: 0 20px 24px; font-size: 18px; font-weight: 700;
  color: var(--accent); border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
}
.sidebar .logo span { color: var(--text-secondary); font-weight: 400; font-size: 13px; display: block; margin-top: 4px; }
.sidebar nav { flex: 1; }
.sidebar nav a {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 20px; color: var(--text-secondary); font-size: 14px;
  transition: all 0.15s;
}
.sidebar nav a:hover { background: var(--bg-card); color: var(--text-primary); text-decoration: none; }
.sidebar nav a.active { background: var(--bg-card); color: var(--accent); border-right: 3px solid var(--accent); }
.sidebar nav a .icon { font-size: 18px; width: 24px; text-align: center; }
.sidebar .logout { padding: 16px 20px; border-top: 1px solid var(--border); }
.sidebar .logout a { color: var(--text-secondary); font-size: 13px; }
.sidebar .logout a:hover { color: var(--danger); }

/* ── Theme toggle ── */
.theme-toggle {
  padding: 8px 20px 0; display: flex; justify-content: center;
}
.theme-toggle button {
  background: var(--bg-input); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 12px; cursor: pointer;
  color: var(--text-secondary); font-size: 13px; display: flex;
  align-items: center; gap: 6px; transition: all 0.15s; width: 100%;
  justify-content: center;
}
.theme-toggle button:hover { background: var(--bg-hover); color: var(--text-primary); }

.main-content {
  margin-left: 220px; flex: 1; padding: 32px; min-height: 100vh;
}

/* ── Login page ── */
.login-page {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh; background: var(--bg-body);
}
.login-card {
  background: var(--bg-card); border-radius: 16px; padding: 40px;
  width: 100%; max-width: 380px; box-shadow: 0 8px 32px var(--shadow);
}
.login-card h1 { text-align: center; font-size: 22px; margin-bottom: 8px; color: var(--text-heading); }
.login-card p { text-align: center; color: var(--text-secondary); font-size: 14px; margin-bottom: 28px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 13px; color: var(--text-secondary); margin-bottom: 6px; }
.form-group input {
  width: 100%; padding: 10px 14px; background: var(--bg-input); border: 1px solid var(--border-strong);
  border-radius: 8px; color: var(--text-primary); font-size: 14px; outline: none;
}
.form-group input:focus { border-color: var(--accent); }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 20px; border-radius: 8px; font-size: 14px; font-weight: 600;
  border: none; cursor: pointer; transition: all 0.15s; gap: 8px;
}
.btn-primary { background: var(--accent); color: var(--chat-user-text); width: 100%; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: var(--bg-input); color: var(--text-primary); }
.btn-secondary:hover { background: var(--bg-hover); }

/* ── Flash messages ── */
.flash {
  padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 14px;
}
.flash-error { background: var(--flash-error-bg); color: var(--danger); border: 1px solid var(--flash-error-border); }
.flash-info { background: var(--flash-info-bg); color: var(--info); border: 1px solid var(--flash-info-border); }
.flash-success { background: var(--flash-success-bg); color: var(--accent); border: 1px solid var(--flash-success-border); }

/* ── Page header ── */
.page-header { margin-bottom: 28px; }
.page-header h1 { font-size: 22px; margin-bottom: 4px; }
.page-header p { color: var(--text-secondary); font-size: 14px; }

/* ── Upload ── */
.upload-zone {
  border: 2px dashed var(--border-strong); border-radius: 16px; padding: 48px;
  text-align: center; background: var(--bg-card); cursor: pointer;
  transition: all 0.2s; margin-bottom: 24px;
}
.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--accent); background: var(--upload-hover-bg);
}
.upload-zone .icon { font-size: 48px; margin-bottom: 12px; }
.upload-zone p { color: var(--text-secondary); font-size: 14px; }
.upload-zone .filename { color: var(--accent); font-weight: 600; margin-top: 8px; }

/* ── Progress ── */
.progress-card {
  background: var(--bg-card); border-radius: 12px; padding: 24px; margin-bottom: 24px;
}
.progress-bar-track {
  width: 100%; height: 8px; background: var(--bg-input); border-radius: 4px;
  overflow: hidden; margin: 12px 0;
}
.progress-bar-fill {
  height: 100%; background: var(--accent); border-radius: 4px;
  transition: width 0.5s ease;
}
.progress-bar-fill.error { background: var(--danger); }
.progress-message { font-size: 14px; color: var(--text-secondary); }
.progress-message.done { color: var(--accent); }

/* ── KPI cards ── */
.kpi-row { display: flex; gap: 12px; margin-bottom: 20px; flex-wrap: wrap; }
.kpi-card {
  flex: 1; min-width: 140px; background: var(--bg-card); border-radius: 12px;
  padding: 16px; text-align: center;
}
.kpi-card .value { font-size: 28px; font-weight: 700; color: var(--accent); }
.kpi-card .label { font-size: 12px; color: var(--text-secondary); margin-top: 4px; }

/* ── Filters ── */
.filters {
  background: var(--bg-card); border-radius: 12px; padding: 16px;
  margin-bottom: 20px; display: flex; gap: 16px; align-items: center; flex-wrap: wrap;
}
.filters label { font-size: 13px; color: var(--text-secondary); }
.filters select, .filters input {
  background: var(--bg-input); color: var(--text-primary); border: 1px solid var(--border-strong);
  border-radius: 6px; padding: 6px 10px; font-size: 13px;
}

/* ── Charts grid ── */
.charts { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 20px; }
.chart-card { background: var(--bg-card); border-radius: 12px; padding: 20px; }
.chart-card.full { grid-column: 1 / -1; }
.chart-card canvas { max-height: 300px; }
.chart-card h3 { font-size: 15px; margin-bottom: 12px; color: var(--text-heading); }

/* ── Tables ── */
.table-card {
  background: var(--bg-card); border-radius: 12px; padding: 20px;
  margin-bottom: 20px; overflow-x: auto;
}
.table-card h3 { font-size: 15px; margin-bottom: 12px; color: var(--text-heading); }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th {
  text-align: left; padding: 10px 8px; border-bottom: 2px solid var(--border-strong);
  color: var(--text-secondary); font-weight: 600; cursor: pointer; white-space: nowrap; user-select: none;
}
th:hover { color: var(--accent); }
th .sort-arrow { margin-left: 4px; font-size: 10px; }
td { padding: 8px; border-bottom: 1px solid var(--border); }
tr:hover td { background: var(--bg-hover); }
.setter-table td:nth-child(n+2) { text-align: right; }
.setter-table th:nth-child(n+2) { text-align: right; }
.highlight { color: var(--accent); font-weight: 700; }

.badge {
  display: inline-block; padding: 2px 8px; border-radius: 10px;
  font-size: 11px; font-weight: 600;
}
.badge-won { background: var(--badge-won-bg); color: var(--accent); }
.badge-no-won { background: var(--flash-error-bg); color: var(--danger); }
.badge-tag { background: var(--bg-input); color: var(--text-secondary); }
.badge-setter { background: var(--badge-setter-bg); color: var(--info); }

/* ── Report ── */
.report-content {
  background: var(--bg-card); border-radius: 12px; padding: 32px;
  line-height: 1.7; font-size: 15px;
}
.report-content h1 { font-size: 24px; color: var(--accent); margin: 32px 0 16px; padding-bottom: 8px; border-bottom: 1px solid var(--border-strong); }
.report-content h2 { font-size: 20px; color: var(--text-heading); margin: 24px 0 12px; }
.report-content h3 { font-size: 17px; color: var(--text-primary); margin: 20px 0 8px; }
.report-content h4 { font-size: 15px; color: var(--text-secondary); margin: 16px 0 8px; }
.report-content p { margin-bottom: 12px; }
.report-content ul, .report-content ol { padding-left: 24px; margin-bottom: 12px; }
.report-content li { margin-bottom: 6px; }
.report-content strong { color: var(--accent); }
.report-content hr { border: none; border-top: 1px solid var(--border-strong); margin: 24px 0; }
.report-content table { margin: 16px 0; }
.report-content table th { background: var(--bg-input); }
.report-content blockquote {
  border-left: 3px solid var(--accent); padding-left: 16px;
  color: var(--text-secondary); font-style: italic; margin: 12px 0;
}
.report-content code {
  background: var(--bg-input); padding: 2px 6px; border-radius: 4px; font-size: 13px;
}
.report-content pre {
  background: var(--bg-input); padding: 16px; border-radius: 8px;
  overflow-x: auto; margin: 12px 0;
}
.report-content pre code { padding: 0; background: none; }

/* ── Feedback cards ── */
.setter-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; margin-bottom: 24px; }
.setter-card {
  background: var(--bg-card); border-radius: 12px; padding: 20px;
  border-left: 4px solid var(--accent);
}
.setter-card h3 { font-size: 16px; margin-bottom: 12px; }
.setter-card .stat { display: flex; justify-content: space-between; padding: 6px 0; border-bottom: 1px solid var(--border); font-size: 13px; }
.setter-card .stat .stat-label { color: var(--text-secondary); }
.setter-card .stat .stat-value { font-weight: 600; }
.kpi-good { color: var(--accent); }
.kpi-warn { color: var(--warn); }
.kpi-bad { color: var(--danger); }

/* ── Chatbot ── */
.chat-container {
  display: flex; flex-direction: column;
  height: calc(100vh - 64px); max-height: calc(100vh - 64px);
}
.chat-header { margin-bottom: 16px; }
.chat-header h1 { font-size: 22px; margin-bottom: 4px; }
.chat-header p { color: var(--text-secondary); font-size: 14px; }

.chat-messages {
  flex: 1; overflow-y: auto; padding: 16px 0;
  display: flex; flex-direction: column; gap: 12px;
}

.chat-welcome {
  text-align: center; color: var(--text-secondary); padding: 60px 20px;
}
.chat-welcome-icon { font-size: 48px; margin-bottom: 16px; }
.chat-welcome p { font-size: 15px; margin-bottom: 8px; }
.chat-welcome-hint { font-size: 13px; color: var(--text-secondary); opacity: 0.7; }

.chat-bubble {
  max-width: 80%; padding: 12px 16px; border-radius: 12px;
  font-size: 14px; line-height: 1.6; word-wrap: break-word;
}
.chat-bubble-user {
  align-self: flex-end; background: var(--accent); color: var(--chat-user-text);
  border-bottom-right-radius: 4px;
}
.chat-bubble-assistant {
  align-self: flex-start; background: var(--bg-card);
  border-bottom-left-radius: 4px;
}
:root.light .chat-bubble-assistant {
  border: 1px solid var(--border);
}
.chat-bubble-assistant h1,
.chat-bubble-assistant h2,
.chat-bubble-assistant h3 { color: var(--accent); margin: 12px 0 8px; }
.chat-bubble-assistant h1:first-child,
.chat-bubble-assistant h2:first-child,
.chat-bubble-assistant h3:first-child { margin-top: 0; }
.chat-bubble-assistant h1 { font-size: 18px; }
.chat-bubble-assistant h2 { font-size: 16px; }
.chat-bubble-assistant h3 { font-size: 15px; }
.chat-bubble-assistant p { margin-bottom: 8px; }
.chat-bubble-assistant p:last-child { margin-bottom: 0; }
.chat-bubble-assistant ul,
.chat-bubble-assistant ol { padding-left: 20px; margin-bottom: 8px; }
.chat-bubble-assistant li { margin-bottom: 4px; }
.chat-bubble-assistant strong { color: var(--accent); }
.chat-bubble-assistant code {
  background: var(--bg-input); padding: 1px 5px; border-radius: 4px; font-size: 13px;
}
.chat-bubble-assistant pre {
  background: var(--bg-input); padding: 12px; border-radius: 6px;
  overflow-x: auto; margin: 8px 0;
}
.chat-bubble-assistant pre code { padding: 0; background: none; }
.chat-bubble-assistant table { width: 100%; border-collapse: collapse; margin: 8px 0; font-size: 13px; }
.chat-bubble-assistant th { text-align: left; padding: 6px 8px; border-bottom: 2px solid var(--border-strong); color: var(--text-secondary); }
.chat-bubble-assistant td { padding: 6px 8px; border-bottom: 1px solid var(--border); }
.chat-bubble-assistant blockquote {
  border-left: 3px solid var(--accent); padding-left: 12px; color: var(--text-secondary);
  font-style: italic; margin: 8px 0;
}

.chat-source-bar {
  padding: 12px 0;
  border-top: 1px solid var(--border);
}
.chat-source-tabs {
  display: flex; gap: 4px;
}
.chat-source-tab {
  padding: 6px 16px; border-radius: 6px; border: 1px solid var(--border-strong);
  background: transparent; color: var(--text-secondary); font-size: 13px;
  cursor: pointer; transition: all 0.15s;
}
.chat-source-tab:hover { background: var(--bg-hover); }
.chat-source-tab.active {
  background: var(--accent); color: var(--chat-user-text);
  border-color: var(--accent);
}
.chat-source-file {
  display: flex; align-items: center; gap: 10px; margin-top: 8px;
}
.chat-file-btn {
  font-size: 13px; padding: 5px 12px; cursor: pointer;
}
.chat-file-name {
  font-size: 13px; color: var(--text-secondary);
}

.chat-input-area {
  padding: 16px 0 0;
}
.chat-input-form {
  display: flex; gap: 8px;
}
.chat-input-form input {
  flex: 1; padding: 12px 16px; background: var(--bg-card); border: 1px solid var(--border-strong);
  border-radius: 8px; color: var(--text-primary); font-size: 14px; outline: none;
}
.chat-input-form input:focus { border-color: var(--accent); }
.chat-send-btn {
  padding: 12px 24px; min-width: 80px;
}

/* ── Database view ── */
.db-stats {
  display: flex; gap: 16px; margin-bottom: 20px; flex-wrap: wrap;
}
.db-stats .kpi-card { flex: 1; min-width: 140px; }
.db-actions {
  display: flex; gap: 8px; margin-bottom: 16px;
}
.btn-delete {
  background: none; border: none; color: var(--text-secondary);
  cursor: pointer; font-size: 14px; padding: 4px 8px; border-radius: 4px;
}
.btn-delete:hover { background: var(--danger); color: #fff; }
.btn-danger {
  background: var(--danger); color: #fff; border: none;
  padding: 8px 16px; border-radius: 6px; cursor: pointer; font-size: 13px;
}
.btn-danger:hover { opacity: 0.85; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .sidebar { display: none; }
  .main-content { margin-left: 0; padding: 16px; }
  .charts { grid-template-columns: 1fr; }
  .kpi-row { flex-direction: column; }
  .setter-cards { grid-template-columns: 1fr; }
  .chat-bubble { max-width: 95%; }
}