/* ============================================================
   ZakupAI — Main Application Styles
   Based on reference sidebar layout design
   ============================================================ */

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

:root {
  --bg: #f0f2f5;
  --card: #ffffff;
  --dark: #1a1f36;
  --dark-hover: #252b45;
  --accent: #5b6abf;
  --accent-light: #eef0ff;
  --gradient: linear-gradient(135deg, #5b6abf, #3bb8a8);
  --gradient-hover: linear-gradient(135deg, #4a59ae, #2fa797);
  --text: #1a1f36;
  --text-secondary: #6b7280;
  --border: #e5e7eb;
  --success: #10b981;
  --success-bg: #ecfdf5;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-lg: 0 4px 12px rgba(0,0,0,0.1);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ===== UTILITY ===== */
.hidden { display: none !important; }

/* ===== HEADER ===== */
.header {
  background: var(--dark);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 56px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 24px;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.logo span { color: #3bb8a8; }

.procurement-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--dark-hover);
  padding: 6px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  border: 1px solid rgba(255,255,255,0.1);
  transition: background 0.2s;
  position: relative;
  color: #fff;
}

.procurement-selector:hover { background: rgba(255,255,255,0.12); }

.procurement-selector .arrow { font-size: 10px; opacity: 0.6; margin-left: 4px; }

.procurement-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 4px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  min-width: 280px;
  max-height: 300px;
  overflow-y: auto;
  z-index: 200;
}

.procurement-dropdown.hidden { display: none; }

.procurement-dropdown-item {
  padding: 10px 14px;
  font-size: 13px;
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s;
  border-bottom: 1px solid var(--border);
}

.procurement-dropdown-item:last-child { border-bottom: none; }

.procurement-dropdown-item:hover { background: var(--accent-light); }

.procurement-dropdown-item.active {
  background: var(--accent-light);
  color: var(--accent);
  font-weight: 500;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-new-procurement {
  background: var(--gradient);
  border: none;
  color: #fff;
  padding: 7px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: opacity 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-new-procurement:hover { opacity: 0.9; }

.user-info {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
}

.admin-link {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  transition: color 0.2s;
}

.admin-link:hover {
  color: #fff;
}

.btn-logout {
  background: none;
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.7);
  padding: 5px 12px;
  border-radius: 6px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-logout:hover {
  border-color: rgba(255,255,255,0.4);
  color: #fff;
}

/* ===== APP LAYOUT ===== */
.app-layout {
  display: flex;
  min-height: calc(100vh - 56px);
}

/* ===== SIDEBAR ===== */
.sidebar {
  width: 220px;
  flex-shrink: 0;
  background: var(--card);
  border-right: 1px solid var(--border);
  position: sticky;
  top: 56px;
  height: calc(100vh - 56px);
  overflow-y: auto;
  padding: 16px 0;
  z-index: 99;
}

.sidebar-label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  padding: 8px 20px 6px;
  opacity: 0.7;
}

.tab {
  padding: 10px 20px;
  font-size: 13px;
  font-weight: 400;
  color: var(--text-secondary);
  cursor: pointer;
  border-left: 3px solid transparent;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.tab:hover {
  color: var(--text);
  background: rgba(0,0,0,0.02);
}

.tab.active {
  color: var(--accent);
  background: var(--accent-light);
  border-left-color: var(--accent);
  font-weight: 500;
}

.tab .badge {
  background: var(--accent);
  color: #fff;
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 3px;
  font-weight: 600;
  margin-left: auto;
}

.tab .badge-outline {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 3px;
  margin-left: auto;
}

/* ===== MAIN CONTENT ===== */
.main {
  padding: 24px 32px;
  flex: 1;
  min-width: 0;
  max-width: 1200px;
}

.tab-content { display: none; }
.tab-content.active { display: block; }

/* ===== TWO COLUMN LAYOUT ===== */
.two-col {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 20px;
  align-items: start;
}

/* ===== CARDS ===== */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h3 {
  font-size: 15px;
  font-weight: 600;
}

.card-body { padding: 16px 20px; }

.card-body-compact { padding: 12px 16px; }

/* ===== LOTS PANEL (left) ===== */
.lots-panel .card-body { padding: 12px; }

.lot-item {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.lot-item:hover {
  border-color: var(--accent);
  background: var(--accent-light);
}

.lot-item.active {
  border-color: var(--accent);
  background: var(--accent-light);
  box-shadow: 0 0 0 1px var(--accent);
}

.lot-num {
  background: var(--gradient);
  color: #fff;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 600;
  flex-shrink: 0;
}

.lot-info { flex: 1; min-width: 0; }

.lot-name {
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 2px;
}

.lot-meta {
  font-size: 12px;
  color: var(--text-secondary);
}

.lot-add {
  padding: 12px 14px;
  border: 2px dashed var(--border);
  border-radius: 8px;
  text-align: center;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 13px;
  transition: all 0.2s;
}

.lot-add:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

/* ===== STATUS BADGE ===== */
.status {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}

.status-draft { background: #f3f4f6; color: #6b7280; }
.status-search { background: #eff6ff; color: #3b82f6; }
.status-active { background: var(--success-bg); color: var(--success); }
.status-warning { background: var(--warning-bg); color: var(--warning); }

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ===== SUPPLIERS TABLE ===== */
.suppliers-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.suppliers-table th {
  text-align: left;
  padding: 10px 14px;
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--border);
  background: #fafbfc;
}

.suppliers-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.suppliers-table tr:last-child td { border-bottom: none; }

.suppliers-table tr:hover td { background: #fafbfc; }

.supplier-name { font-weight: 500; }

.supplier-email {
  font-size: 12px;
  color: var(--text-secondary);
}

.source-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 500;
}

.source-ai { background: #eff6ff; color: #3b82f6; }
.source-manual { background: #f3f4f6; color: #6b7280; }

/* ===== BUTTONS ===== */
.btn {
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
}

.btn-primary:hover { opacity: 0.9; }

.btn-secondary {
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-secondary:hover { background: var(--bg); }

.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

.btn-ghost {
  background: none;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-size: 13px;
  padding: 4px 8px;
}

.btn-ghost:hover { text-decoration: underline; }

/* ===== SEARCH SECTION ===== */
.search-status {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px;
  background: #eff6ff;
  border-radius: 8px;
  margin-bottom: 16px;
}

.search-status .spinner {
  width: 20px;
  height: 20px;
  border: 2px solid #3b82f6;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ===== LETTER / EMAIL SECTION ===== */
.letter-preview {
  background: #fafbfc;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-line;
  color: var(--text);
}

/* ===== PROPOSALS TAB ===== */
.proposals-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.proposal-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  transition: all 0.2s;
}

.proposal-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.proposal-supplier {
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 4px;
}

.proposal-date {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.proposal-items {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.proposal-total {
  font-size: 16px;
  font-weight: 600;
  color: var(--success);
}

.proposal-add {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 32px 16px;
  text-align: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.proposal-add:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
}

.proposal-add .plus {
  font-size: 28px;
  line-height: 1;
}

/* ===== COMPARISON TAB ===== */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.comparison-table th, .comparison-table td {
  padding: 10px 12px;
  border: 1px solid var(--border);
  text-align: left;
}

.comparison-table th {
  background: #fafbfc;
  font-weight: 600;
  font-size: 12px;
}

.comparison-table thead th:first-child {
  background: var(--dark);
  color: #fff;
}

.match { color: var(--success); font-weight: 500; }
.mismatch { color: var(--danger); font-weight: 500; }
.partial { color: var(--warning); font-weight: 500; }

.check-icon { font-size: 16px; }

/* ===== NAT REGIME TAB ===== */
.regime-card {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 12px;
}

.regime-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.regime-product {
  font-weight: 600;
  font-size: 14px;
}

.regime-checks {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}

.regime-check {
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 13px;
}

.regime-check-label {
  font-weight: 500;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.regime-check-value {
  font-size: 12px;
  color: var(--text-secondary);
}

.regime-pass { background: var(--success-bg); }
.regime-pass .regime-check-label { color: var(--success); }

.regime-fail { background: var(--danger-bg); }
.regime-fail .regime-check-label { color: var(--danger); }

.regime-unknown { background: #f3f4f6; }

/* ===== CHAT / CORRESPONDENCE ===== */
.chat-thread {
  max-height: 400px;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.chat-msg {
  max-width: 75%;
  padding: 10px 14px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.5;
}

.chat-msg.outgoing {
  background: var(--accent);
  color: #fff;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.chat-msg.incoming {
  background: #f3f4f6;
  color: var(--text);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.chat-msg-time {
  font-size: 11px;
  opacity: 0.7;
  margin-top: 4px;
}

.chat-input {
  display: flex;
  gap: 8px;
  padding: 12px;
  border-top: 1px solid var(--border);
}

.chat-input input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
}

.chat-input input:focus { border-color: var(--accent); }

.chat-msg-attachment {
  max-width: 75%;
  padding: 10px 14px;
  border-radius: 12px;
  background: #f3f4f6;
  align-self: flex-start;
  border-bottom-left-radius: 4px;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: background 0.2s;
}

.chat-msg-attachment:hover { background: #e5e7eb; }

.attachment-icon { font-size: 24px; }

.attachment-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
}

.attachment-size {
  font-size: 11px;
  color: var(--text-secondary);
}

/* ===== UPLOAD ZONE ===== */
.upload-zone {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-secondary);
}

.upload-zone:hover {
  border-color: var(--accent);
  background: var(--accent-light);
  color: var(--accent);
}

.upload-zone .icon { font-size: 32px; margin-bottom: 8px; }
.upload-zone .label { font-size: 14px; font-weight: 500; }
.upload-zone .hint { font-size: 12px; margin-top: 4px; }

/* ===== SECTION SPACING ===== */
.section-gap { margin-bottom: 20px; }

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-gap {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ===== INFO BLOCK ===== */
.info-block {
  padding: 12px 16px;
  background: #eff6ff;
  border-radius: 8px;
  font-size: 13px;
  color: #3b82f6;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ===== SUPPLIER CARDS (left panel) ===== */
.supplier-card {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 8px;
  cursor: pointer;
  transition: all 0.2s;
}

.supplier-card:hover {
  border-color: var(--accent);
  background: var(--accent-light);
}

.supplier-card.active {
  border-color: var(--accent);
  background: var(--accent-light);
  box-shadow: 0 0 0 1px var(--accent);
}

.supplier-card-name {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
}

.supplier-card-status {
  margin-bottom: 4px;
}

.status-pill {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 6px;
  font-size: 13px;
  font-weight: 600;
}

.pill-warning {
  background: var(--warning-bg);
  color: #b45309;
}

.pill-success {
  background: var(--success-bg);
  color: #047857;
}

.pill-info {
  background: #eff6ff;
  color: #1d4ed8;
}

.pill-draft {
  background: #f3f4f6;
  color: #6b7280;
}

.supplier-card-detail {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 2px;
}

/* ===== COLLAPSIBLE ===== */
.collapsible-header {
  cursor: pointer;
  user-select: none;
}

.collapsible-header:hover { background: #fafbfc; }

.collapse-arrow {
  font-size: 10px;
  transition: transform 0.2s;
  color: var(--text-secondary);
}

.collapsible-card.collapsed .collapse-arrow {
  transform: rotate(-90deg);
}

.collapsible-card.collapsed .collapsible-body {
  display: none;
}

.chat-badge {
  font-size: 12px;
  color: var(--text-secondary);
  background: #f3f4f6;
  padding: 2px 8px;
  border-radius: 10px;
}

/* ===== ADD SUPPLIER FORM ===== */
.add-supplier-form {
  background: #fafbfc;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 12px;
}

.form-row {
  display: flex;
  gap: 12px;
}

.form-row .form-group { margin-bottom: 10px; }

.own-supplier-item {
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 8px;
  transition: all 0.2s;
}

.own-supplier-item:hover {
  border-color: var(--accent);
  background: var(--accent-light);
}

.btn-icon {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all 0.2s;
}

.btn-icon:hover { border-color: var(--accent); color: var(--accent); }
.btn-icon-danger:hover { border-color: var(--danger); color: var(--danger); }

/* ===== SEND OPTIONS ===== */
.send-options {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.send-option-title {
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 10px;
}

.send-options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 12px;
}

.send-option {
  border: 2px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: center;
}

.send-option:hover { border-color: var(--accent); }

.send-option.active {
  border-color: var(--accent);
  background: var(--accent-light);
  box-shadow: 0 0 0 1px var(--accent);
}

.send-option-icon { font-size: 24px; margin-bottom: 6px; }
.send-option-label { font-size: 14px; font-weight: 600; margin-bottom: 2px; }
.send-option-desc { font-size: 12px; color: var(--text-secondary); }

/* ===== LETTERHEAD ===== */
.letterhead-settings {
  background: #fafbfc;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 12px;
}

.letterhead-upload {
  border: 2px dashed var(--border);
  border-radius: 8px;
  padding: 12px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
}

.letterhead-upload:hover {
  border-color: var(--accent);
  background: var(--accent-light);
}

.letterhead-upload-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 13px;
}

.letterhead-upload-inner .hint {
  font-size: 11px;
  color: var(--text-secondary);
}

.letterhead-preview-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--success-bg);
  border-radius: 8px;
  margin-top: 12px;
}

.form-select {
  appearance: auto;
  cursor: pointer;
}

.send-actions {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* ===== MODAL ===== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 200;
  align-items: center;
  justify-content: center;
}

.modal-overlay.open { display: flex; }

.modal {
  background: var(--card);
  border-radius: 12px;
  width: 480px;
  max-width: 90vw;
  box-shadow: 0 20px 60px rgba(0,0,0,0.2);
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-header h3 { font-size: 16px; }

.modal-close {
  background: none;
  border: none;
  font-size: 18px;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 4px;
}

.modal-body { padding: 20px; }

.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ===== FORM ===== */
.form-group { margin-bottom: 16px; }

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 6px;
}

.form-input, .form-textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  font-family: inherit;
}

.form-input:focus, .form-textarea:focus { border-color: var(--accent); }

.form-textarea { resize: vertical; min-height: 80px; }

.form-hint {
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ===== CHECKBOX ===== */
input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* ===== TABLE SCROLL WRAPPER ===== */
.table-scroll-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  width: 100%;
}

/* ===== SUPPLIER SELECTOR BAR ===== */
.comp-suppliers-bar { margin-bottom: 20px; }

.comp-suppliers-label {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.comp-suppliers-list {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.comp-supplier-tab {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s;
  min-width: 200px;
  background: var(--card);
}

.comp-supplier-tab:hover { border-color: var(--accent); }

.comp-supplier-tab.active {
  border-color: var(--accent);
  background: var(--accent-light);
  box-shadow: 0 0 0 1px var(--accent);
}

.comp-supplier-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.comp-supplier-indicator--warn { background: var(--warning); }
.comp-supplier-indicator--ok { background: var(--success); }
.comp-supplier-indicator--pending { background: #d1d5db; }

.comp-supplier-tab-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}

.comp-supplier-tab-meta {
  font-size: 11px;
  color: var(--text-secondary);
  white-space: nowrap;
}

.comp-supplier-content { display: none; }
.comp-supplier-content.active { display: block; }

/* ===== COMPARISON SUB-TABS ===== */
.comp-subtabs {
  display: flex;
  background: var(--bg);
  padding: 5px;
  margin: 16px 20px 0 20px;
  border-radius: 8px;
  gap: 4px;
}

.comp-subtab {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s;
}

.comp-subtab:hover { color: var(--text); background: var(--border); }

.comp-subtab.active {
  color: var(--text);
  background: var(--card);
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.comp-subtab-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}

.comp-subtab-dot--warn { background: var(--warning); }

.comp-subtab-count {
  background: var(--accent);
  color: #fff;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 7px;
  border-radius: 10px;
}

.comp-subtab-count--muted {
  background: var(--border);
  color: var(--text-secondary);
}

.comp-tab-content { display: none; }
.comp-tab-content.active { display: block; }

/* ===== COMPARISON LOT GROUPS ===== */
.comp-lot { border-bottom: 1px solid var(--border); }
.comp-lot:last-child { border-bottom: none; }

.comp-lot-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  cursor: pointer;
  transition: background 0.2s;
  user-select: none;
}

.comp-lot-header:hover { background: #fafbfc; }

.comp-lot-header-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.comp-lot-header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.comp-lot-arrow {
  font-size: 9px;
  color: var(--text-secondary);
  transition: transform 0.2s;
  flex-shrink: 0;
}

.comp-lot-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.comp-lot-indicator--warn { background: var(--warning); }
.comp-lot-indicator--ok { background: var(--success); }

.comp-lot-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.comp-lot-stat {
  font-size: 12px;
  color: var(--text-secondary);
}

.comp-lot-badge {
  font-size: 11px;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 10px;
}

.comp-lot-badge--warn { background: var(--warning-bg); color: var(--warning); }
.comp-lot-badge--ok { background: var(--success-bg); color: var(--success); }

.comp-lot-body {
  padding: 0 20px 16px 20px;
  overflow-x: auto;
}

/* ===== EMPTY STATE ===== */
.empty-state {
  text-align: center;
  padding: 32px 16px;
  color: var(--text-secondary);
  font-size: 14px;
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  transition: opacity 0.3s, transform 0.3s;
  max-width: 400px;
}

.toast.hidden {
  display: none !important;
}

.toast-error {
  background: var(--danger);
  color: #fff;
}

.toast-message {
  background: var(--dark);
  color: #fff;
}

/* ===== LOT PARAM ROWS (modal) ===== */
.lot-param-row {
  display: grid;
  grid-template-columns: 2fr 2fr 1fr auto;
  gap: 8px;
  margin-bottom: 8px;
  align-items: center;
}

/* ===== RESPONSIVE: TABLET ===== */
@media (max-width: 900px) {
  .two-col {
    grid-template-columns: 1fr;
  }
}

/* ===== RESPONSIVE: MOBILE ===== */
@media (max-width: 768px) {
  /* Global overflow prevention */
  html, body {
    overflow-x: hidden;
    width: 100%;
  }

  .main, .card, .card-body, .card-header {
    max-width: 100%;
    overflow-x: hidden;
  }

  /* Header */
  .header {
    padding: 0 12px;
    height: auto;
    flex-wrap: wrap;
    gap: 8px;
    padding-top: 10px;
    padding-bottom: 10px;
  }

  .header-left {
    width: 100%;
    gap: 10px;
  }

  .procurement-selector {
    font-size: 12px;
    padding: 5px 10px;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .header-right {
    width: 100%;
    justify-content: space-between;
  }

  .btn-new-procurement {
    padding: 6px 10px;
    font-size: 12px;
  }

  .user-info { font-size: 12px; }

  /* Sidebar -> horizontal bar on mobile */
  .app-layout {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    height: auto;
    position: sticky;
    top: 56px;
    display: flex;
    flex-direction: row;
    padding: 0;
    border-right: none;
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .sidebar::-webkit-scrollbar { display: none; }

  .sidebar-label { display: none; }

  .tab {
    padding: 10px 14px;
    font-size: 13px;
    gap: 5px;
    flex-shrink: 0;
    border-left: none;
    border-bottom: 2px solid transparent;
  }

  .tab.active {
    border-left-color: transparent;
    border-bottom-color: var(--accent);
  }

  .tab .badge,
  .tab .badge-outline {
    margin-left: 4px;
  }

  /* Main content */
  .main {
    padding: 12px;
  }

  /* Cards */
  .card-header {
    padding: 12px 14px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .card-header h3 {
    font-size: 14px;
  }

  .card-body {
    padding: 12px 14px;
  }

  /* Two column -> single */
  .two-col {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  /* Lots */
  .lot-item {
    padding: 10px 12px;
  }

  .lot-name { font-size: 13px; }
  .lot-meta { font-size: 11px; }
  .lot-num { width: 24px; height: 24px; font-size: 11px; }

  /* Suppliers table - wrap in scrollable container */
  .card-body:has(.suppliers-table),
  [style*="padding: 0"]:has(.suppliers-table) {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-width: calc(100vw - 24px);
  }

  .suppliers-table {
    font-size: 12px;
    min-width: 500px;
  }

  .suppliers-table th,
  .suppliers-table td {
    padding: 8px 10px;
    white-space: nowrap;
  }

  .suppliers-table th { font-size: 10px; }

  /* Supplier cards (left panel) */
  .supplier-card {
    padding: 10px 12px;
  }

  .supplier-card-name { font-size: 13px; }
  .status-pill { font-size: 12px; padding: 2px 8px; }

  /* Add supplier form */
  .form-row {
    flex-direction: column;
    gap: 0;
  }

  .add-supplier-form {
    padding: 12px;
  }

  .form-input, .form-textarea, .form-select {
    font-size: 14px;
    padding: 10px 12px;
  }

  /* Buttons */
  .btn {
    padding: 8px 12px;
    font-size: 12px;
  }

  .btn-primary {
    width: 100%;
    justify-content: center;
  }

  .flex-gap {
    flex-wrap: wrap;
    gap: 6px;
  }

  .flex-between {
    flex-direction: column;
    gap: 10px;
    align-items: stretch;
  }

  /* Send options */
  .send-options-grid {
    grid-template-columns: 1fr;
  }

  .send-option {
    padding: 10px;
  }

  .send-option-icon { font-size: 20px; }
  .send-option-label { font-size: 13px; }

  .send-actions .flex-between {
    flex-direction: column;
    align-items: stretch;
  }

  .send-actions .flex-gap {
    flex-direction: column;
  }

  .send-actions .btn-primary {
    width: 100%;
  }

  /* Letterhead */
  .letterhead-settings .form-row {
    flex-direction: column;
  }

  .letterhead-preview-bar {
    flex-direction: column;
    gap: 10px;
    align-items: stretch;
  }

  .letterhead-preview-bar .flex-gap {
    justify-content: center;
  }

  /* Chat */
  .chat-msg {
    max-width: 90%;
    font-size: 13px;
    padding: 8px 12px;
  }

  .chat-thread {
    max-height: 300px;
    padding: 8px;
  }

  .chat-input {
    padding: 8px;
  }

  .chat-input input {
    font-size: 14px;
    padding: 10px 12px;
  }

  .chat-badge { font-size: 11px; }

  .collapsible-header {
    flex-wrap: wrap;
    gap: 6px;
  }

  .collapsible-header h3 {
    font-size: 13px;
  }

  /* Proposals */
  .proposals-grid {
    grid-template-columns: 1fr;
  }

  .proposal-card { padding: 12px; }
  .proposal-supplier { font-size: 14px; }
  .proposal-total { font-size: 15px; }

  /* Supplier tabs & comparison */
  .comp-suppliers-list { flex-direction: column; }
  .comp-supplier-tab { min-width: unset; }
  .comp-subtabs { margin: 12px 14px 0 14px; padding: 4px; }
  .comp-subtab { padding: 7px 10px; font-size: 12px; }
  .comp-lot-header { padding: 12px 14px; flex-wrap: wrap; gap: 8px; }
  .comp-lot-header-right { width: 100%; padding-left: 26px; }
  .comp-lot-title { font-size: 13px; }
  .comp-lot-body { padding: 0 14px 12px 14px; }

  /* Comparison table */
  .card-body:has(.comparison-table),
  [style*="overflow-x"]:has(.comparison-table) {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-width: calc(100vw - 24px);
  }

  .comparison-table {
    min-width: 500px;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 8px 10px;
    font-size: 12px;
    white-space: nowrap;
  }

  /* Upload zones */
  .upload-zone {
    padding: 16px;
  }

  .upload-zone .icon { font-size: 24px; }
  .upload-zone .label { font-size: 13px; }

  div[style*="grid-template-columns: 1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }

  /* Regime cards */
  .regime-checks {
    grid-template-columns: 1fr;
  }

  .regime-card { padding: 12px; }
  .regime-product { font-size: 13px; }

  .regime-card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
  }

  /* Info blocks */
  .info-block {
    font-size: 12px;
    padding: 10px 12px;
  }

  /* Modal */
  .modal {
    width: 95vw;
    max-height: 90vh;
    overflow-y: auto;
  }

  .modal-body { padding: 14px; }
  .modal-header { padding: 12px 14px; }
  .modal-footer { padding: 12px 14px; }

  /* Own supplier item */
  .own-supplier-item .flex-between {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  /* Status badges */
  .status { font-size: 11px; padding: 2px 8px; }

  /* Letter preview */
  .letter-preview {
    font-size: 13px;
    padding: 12px;
    word-break: break-word;
  }

  /* Force all content to stay within viewport */
  .tab-content, .tab-content > * {
    max-width: 100%;
    overflow-x: hidden;
  }

  /* Table wrappers must scroll independently */
  .card-body[style*="padding: 0"] {
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch;
  }

  /* Info block text wrapping */
  .info-block {
    word-break: break-word;
  }

  /* Send actions full width */
  .send-actions .btn {
    width: 100%;
    justify-content: center;
  }

  /* Letterhead form */
  .letterhead-settings {
    overflow: hidden;
  }

  .letterhead-settings .form-row {
    flex-direction: column;
  }

  /* Chat attachment */
  .chat-msg-attachment {
    max-width: 90%;
  }

  .attachment-name {
    font-size: 12px;
    word-break: break-all;
  }

  /* Own supplier item layout */
  .own-supplier-item {
    word-break: break-word;
  }

  .supplier-email {
    word-break: break-all;
    font-size: 11px;
  }

  /* Card header buttons wrap */
  .card-header .flex-gap {
    flex-wrap: wrap;
  }

  .card-header .btn {
    width: auto;
  }

  /* Toast on mobile */
  .toast {
    left: 12px;
    right: 12px;
    bottom: 12px;
    max-width: none;
  }
}