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

:root {
  --navy: #0b1120;
  --navy-mid: #131e30;
  --navy-light: #1a2840;
  --border: #1f3050;
  --blue: #3b82f6;
  --blue-hover: #2563eb;
  --blue-light: #93c5fd;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --white: #ffffff;
  --success: #22c55e;
  --danger: #ef4444;
  --warning: #f59e0b;
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--navy);
  color: var(--text);
  font-size: 15px;
  line-height: 1.6;
}

/* ── Header ── */
.header {
  background: var(--navy-mid);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  width: 32px;
  height: 32px;
  background: var(--blue);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
  color: var(--white);
  letter-spacing: -1px;
}

.logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.3px;
}

.logo-tagline {
  font-size: 12px;
  color: var(--text-muted);
  margin-left: 4px;
}

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

.model-select {
  background: var(--navy-light);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 7px 32px 7px 12px;
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  transition: border-color 0.15s;
}
.model-select:focus {
  outline: none;
  border-color: var(--blue);
}

.status-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-muted);
}
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--success);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* ── Chat Layout ── */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  padding-top: 60px;
}

.messages {
  flex: 1;
  overflow-y: auto;
  padding: 32px 0 16px;
  scroll-behavior: smooth;
}

.messages::-webkit-scrollbar { width: 4px; }
.messages::-webkit-scrollbar-track { background: transparent; }
.messages::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.message-row {
  display: flex;
  padding: 6px 24px;
  max-width: 860px;
  margin: 0 auto;
  width: 100%;
  gap: 12px;
  align-items: flex-start;
}

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
  margin-top: 2px;
}
.avatar.user { background: var(--blue); color: var(--white); }
.avatar.assistant { background: var(--navy-light); border: 1px solid var(--border); color: var(--blue-light); }

.bubble {
  flex: 1;
  background: transparent;
  padding: 4px 0;
}

.bubble-name {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 4px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.bubble-text {
  color: var(--text);
  line-height: 1.65;
  white-space: pre-wrap;
  word-break: break-word;
}

/* Typing indicator */
.typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 0;
}
.typing-indicator span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--blue);
  animation: bounce 1.2s infinite;
}
.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }
@keyframes bounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.5; }
  40% { transform: translateY(-6px); opacity: 1; }
}

/* ── Welcome screen ── */
.welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  padding: 40px 24px;
  gap: 16px;
}
.welcome-icon {
  width: 56px;
  height: 56px;
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
}
.welcome h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
}
.welcome p {
  color: var(--text-muted);
  max-width: 440px;
  font-size: 14px;
}
.welcome-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  max-width: 560px;
  margin-top: 8px;
}
.chip {
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 7px 14px;
  font-size: 13px;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s;
}
.chip:hover { border-color: var(--blue); color: var(--blue-light); }

/* ── Input area ── */
.input-area {
  background: var(--navy);
  border-top: 1px solid var(--border);
  padding: 16px 24px 20px;
}

.input-wrap {
  display: flex;
  align-items: flex-end;
  gap: 10px;
  max-width: 860px;
  margin: 0 auto;
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  transition: border-color 0.15s;
}
.input-wrap:focus-within { border-color: var(--blue); }

#message-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 15px;
  resize: none;
  max-height: 160px;
  line-height: 1.5;
  font-family: inherit;
  min-height: 24px;
}
#message-input::placeholder { color: var(--text-muted); }

.send-btn {
  width: 36px;
  height: 36px;
  background: var(--blue);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
  flex-shrink: 0;
}
.send-btn:hover { background: var(--blue-hover); }
.send-btn:disabled { background: var(--navy-light); cursor: not-allowed; }
.send-btn svg { width: 16px; height: 16px; fill: var(--white); }

.input-footer {
  text-align: center;
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 10px;
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Admin / Auth pages ── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.auth-card {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
}

.auth-card h1 {
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 4px;
}
.auth-card p { color: var(--text-muted); font-size: 14px; margin-bottom: 28px; }

.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}
.form-group input {
  width: 100%;
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  color: var(--text);
  font-size: 15px;
  outline: none;
  transition: border-color 0.15s;
}
.form-group input:focus { border-color: var(--blue); }

.btn-primary {
  width: 100%;
  background: var(--blue);
  color: var(--white);
  border: none;
  border-radius: 8px;
  padding: 11px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  margin-top: 8px;
}
.btn-primary:hover { background: var(--blue-hover); }
.btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }

.error-msg {
  color: var(--danger);
  font-size: 13px;
  margin-top: 12px;
  text-align: center;
}

/* ── Admin dashboard ── */
.admin-layout {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.admin-header {
  background: var(--navy-mid);
  border-bottom: 1px solid var(--border);
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.admin-header .logo-text { color: var(--white); }
.admin-title { font-size: 13px; color: var(--text-muted); }

.logout-btn {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
}
.logout-btn:hover { border-color: var(--danger); color: var(--danger); }

.admin-body {
  flex: 1;
  padding: 32px 28px;
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}
.stat-card .label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
  margin-bottom: 8px;
}
.stat-card .value {
  font-size: 32px;
  font-weight: 700;
  color: var(--white);
  line-height: 1;
}
.stat-card .sublabel {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.charts-row {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 16px;
  margin-bottom: 32px;
}

.chart-card {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}
.chart-card h3 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 16px;
}

/* ── Filters ── */
.filters-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 16px;
  align-items: center;
}

.filter-input {
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: border-color 0.15s;
}
.filter-input:focus { border-color: var(--blue); }

.filter-select {
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 32px 8px 12px;
  color: var(--text);
  font-size: 13px;
  outline: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  cursor: pointer;
  transition: border-color 0.15s;
}
.filter-select:focus { border-color: var(--blue); }

.filter-check-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
}

.filter-btn {
  background: var(--blue);
  color: var(--white);
  border: none;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}
.filter-btn:hover { background: var(--blue-hover); }

.filter-reset {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
}
.filter-reset:hover { border-color: var(--text-muted); color: var(--text); }

/* ── Prompts table ── */
.table-card {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.table-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.table-header h3 { font-size: 14px; font-weight: 600; color: var(--text); }
.table-count { font-size: 12px; color: var(--text-muted); }

table {
  width: 100%;
  border-collapse: collapse;
}
thead th {
  background: var(--navy-light);
  padding: 10px 16px;
  text-align: left;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
tbody tr {
  border-top: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.1s;
}
tbody tr:hover { background: var(--navy-light); }
tbody td {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--text);
  vertical-align: middle;
}

.td-ip { color: var(--text-muted); font-family: monospace; font-size: 12px; }
.td-model {
  display: inline-flex;
  align-items: center;
  background: var(--navy-light);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2px 10px;
  font-size: 11px;
  color: var(--blue-light);
  white-space: nowrap;
}
.td-prompt { max-width: 380px; }
.td-prompt-text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: block;
}
.td-ts { color: var(--text-muted); font-size: 12px; white-space: nowrap; }
.td-flagged { color: var(--warning); }

.action-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 10px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s;
  color: var(--text-muted);
}
.action-btn:hover { color: var(--text); border-color: var(--text-muted); }
.action-btn.flag.active { color: var(--warning); border-color: var(--warning); }
.action-btn.del:hover { color: var(--danger); border-color: var(--danger); }

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 16px;
  border-top: 1px solid var(--border);
}
.page-btn {
  background: var(--navy-light);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s;
}
.page-btn:hover:not(:disabled) { border-color: var(--blue); color: var(--blue-light); }
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.page-info { font-size: 13px; color: var(--text-muted); }

/* ── Modal ── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 24px;
}
.modal-overlay.hidden { display: none; }

.modal {
  background: var(--navy-mid);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
  max-width: 640px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
}
.modal h3 { font-size: 16px; font-weight: 700; color: var(--white); margin-bottom: 20px; }
.modal-field { margin-bottom: 16px; }
.modal-field .field-label {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}
.modal-field .field-val {
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}
.modal-field .field-val.mono { font-family: monospace; font-size: 13px; color: var(--text-muted); }
.modal-close {
  margin-top: 20px;
  background: var(--navy-light);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 9px 20px;
  font-size: 14px;
  cursor: pointer;
  width: 100%;
  transition: border-color 0.15s;
}
.modal-close:hover { border-color: var(--text-muted); }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-muted);
}
.empty-state svg { opacity: 0.3; margin-bottom: 12px; }

@media (max-width: 700px) {
  .charts-row { grid-template-columns: 1fr; }
  .header-right .status-badge { display: none; }
  .filters-row { flex-direction: column; align-items: stretch; }
  .filter-input, .filter-select { width: 100%; }
}