/* ========== RESET & BASE ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
  --bg: #0f1117;
  --surface: #1a1d27;
  --surface2: #242835;
  --border: #2e3348;
  --text: #e4e6f0;
  --text-dim: #8b8fa3;
  --primary: #4f8ff7;
  --primary-hover: #3d7ae0;
  --success: #34d399;
  --danger: #f87171;
  --warning: #fbbf24;
  --radius: 8px;
  --radius-lg: 12px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}

.hidden { display: none !important; }

/* ========== LOGIN ========== */
.login-container {
  max-width: 360px;
  margin: 15vh auto;
  padding: 40px 24px;
  text-align: center;
}
.logo { font-size: 2rem; font-weight: 700; color: var(--text); }
.logo span { color: var(--primary); }
.logo-sm { font-size: 1.2rem; font-weight: 700; }
.logo-sm span { color: var(--primary); }
.tagline { color: var(--text-dim); margin: 4px 0 32px; font-size: 0.9rem; }

#login-form input {
  width: 100%;
  padding: 12px 16px;
  margin-bottom: 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 1rem;
}
#login-form input:focus {
  outline: none;
  border-color: var(--primary);
}
.error { color: var(--danger); font-size: 0.85rem; margin-top: 8px; }

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--primary-hover); }
.btn-success { background: var(--success); color: #000; }
.btn-success:hover:not(:disabled) { background: #2bc789; }
.btn-danger { background: var(--danger); color: #fff; font-size: 0.8rem; padding: 6px 12px; }
.btn-danger:hover:not(:disabled) { background: #e85d5d; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text-dim); }
.btn-outline:hover { border-color: var(--text-dim); color: var(--text); }
.btn-full { width: 100%; }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }

/* ========== HEADER ========== */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-left, .header-right { display: flex; align-items: center; gap: 12px; }
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
}
.user-name { color: var(--text-dim); font-size: 0.85rem; }

/* ========== MODE BADGE ========== */
.mode-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.mode-paper { background: var(--warning); color: #000; }
.mode-live { background: var(--danger); color: #fff; }

/* ========== NAV ========== */
.nav {
  display: flex;
  gap: 0;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
}
.nav-link {
  padding: 12px 20px;
  color: var(--text-dim);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  border-bottom: 2px solid transparent;
  transition: all 0.15s;
}
.nav-link:hover { color: var(--text); }
.nav-link.active { color: var(--primary); border-bottom-color: var(--primary); }

/* ========== CONTAINER ========== */
.container { max-width: 960px; margin: 0 auto; padding: 24px 20px; }
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }

/* ========== FORMS ========== */
.trade-form { max-width: 500px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 0.85rem; color: var(--text-dim); margin-bottom: 6px; font-weight: 500; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.input-with-quote { display: flex; align-items: center; gap: 12px; }

input[type="text"], input[type="number"], input[type="date"], select {
  width: 100%;
  padding: 10px 14px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.95rem;
}
input:focus, select:focus { outline: none; border-color: var(--primary); }
select { cursor: pointer; }

/* Toggle buttons */
.toggle-group { display: flex; gap: 0; }
.toggle-btn {
  flex: 1;
  padding: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}
.toggle-btn:first-child { border-radius: var(--radius) 0 0 var(--radius); }
.toggle-btn:last-child { border-radius: 0 var(--radius) var(--radius) 0; }
.toggle-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }

/* Quote display */
.quote-display { white-space: nowrap; }
.quote-price { font-weight: 700; font-size: 1.1rem; }
.quote-change { margin-left: 6px; font-size: 0.85rem; }
.positive { color: var(--success); }
.negative { color: var(--danger); }

/* ========== STOCK QUOTE PANEL ========== */
.stock-quote-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  margin-bottom: 20px;
  max-width: 500px;
}
.quote-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}
.sq-symbol { font-size: 1.4rem; font-weight: 700; }
.sq-price { font-size: 1.4rem; font-weight: 700; }
.sq-change { font-size: 0.95rem; font-weight: 600; }
.quote-details {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}
.qd-item label { font-size: 0.7rem; color: var(--text-dim); display: block; }
.qd-item span { font-size: 0.85rem; font-weight: 600; }

/* ========== OPTIONS CHAIN TABLE ========== */
.options-chain { margin-top: 24px; }
.chain-header { display: flex; align-items: center; gap: 16px; margin-bottom: 12px; flex-wrap: wrap; }
.chain-header h3 { margin: 0; }
.chain-count { font-size: 0.8rem; color: var(--text-dim); font-weight: 400; }
.chain-legend { display: flex; gap: 12px; font-size: 0.75rem; }
.legend-pass { color: var(--success); font-weight: 600; }
.legend-reject { color: var(--danger); font-weight: 600; }
.chain-table { min-width: 860px; font-size: 0.8rem; }
.chain-table td { padding: 6px 8px; }
.chain-table th { padding: 6px 8px; font-size: 0.75rem; }
.chain-table tr.selected-row td { background: rgba(79, 143, 247, 0.15); }
.chain-table tr.rejected-row td { opacity: 0.55; }
.chain-table .radio-cell { text-align: center; }
.chain-table .no-radio { color: var(--text-dim); }
.status-pass { color: var(--success); font-size: 0.75rem; white-space: nowrap; }
.status-reject { color: var(--danger); font-size: 0.75rem; white-space: nowrap; cursor: help; }

/* ========== ORDER TRACKER ========== */
.order-tracker { margin-top: 24px; max-width: 500px; }
.order-tracker h3 { margin-bottom: 12px; }
.order-status-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
}
.status-new, .status-accepted, .status-pending_new { background: var(--primary); color: #fff; }
.status-partially_filled { background: var(--warning); color: #000; }
.status-filled { background: var(--success); color: #000; }
.status-canceled, .status-expired, .status-rejected { background: var(--danger); color: #fff; }

/* ========== SETTINGS ========== */
.settings-subtitle { color: var(--text-dim); font-size: 0.85rem; margin-bottom: 20px; }

/* ========== BTN ROW ========== */
.btn-row { display: flex; gap: 12px; margin-top: 16px; }
.btn-row .btn { flex: 1; }

/* ========== ANALYSIS RESULT ========== */
.analysis-result { margin-top: 24px; max-width: 600px; }
.result-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-top: 12px;
}
.result-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}
.result-item label { font-size: 0.75rem; color: var(--text-dim); display: block; }
.result-item span { font-size: 0.95rem; font-weight: 600; }
.result-item.highlight span { color: var(--primary); font-size: 1.1rem; }

.trade-status {
  margin-top: 16px;
  padding: 16px;
  border-radius: var(--radius);
  font-weight: 500;
}
.trade-status.success { background: rgba(52, 211, 153, 0.1); border: 1px solid var(--success); color: var(--success); }
.trade-status.error { background: rgba(248, 113, 113, 0.1); border: 1px solid var(--danger); color: var(--danger); }
.trade-status.warning { background: rgba(251, 191, 36, 0.1); border: 1px solid var(--warning); color: var(--warning); }

.alternatives { margin-top: 16px; }
.alternatives h4 { font-size: 0.9rem; color: var(--text-dim); margin-bottom: 8px; }
.alt-item {
  display: flex;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--surface2);
  border-radius: var(--radius);
  margin-bottom: 6px;
  font-size: 0.85rem;
}

/* ========== TABLES ========== */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.85rem; min-width: 600px; }
.data-table th {
  text-align: left;
  padding: 10px 12px;
  color: var(--text-dim);
  font-weight: 500;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.data-table tr:hover td { background: var(--surface2); }
.empty-state { text-align: center; color: var(--text-dim); padding: 40px 0; }

/* ========== SUMMARY CARDS ========== */
.summary-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}
.summary-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px;
}
.summary-card label { display: block; font-size: 0.75rem; color: var(--text-dim); margin-bottom: 4px; }
.big-number { font-size: 1.3rem; font-weight: 700; }

/* ========== CHART ========== */
.chart-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 12px;
  margin-bottom: 20px;
  min-height: 300px;
}

/* ========== FILTERS ========== */
.filters {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
  align-items: end;
}
.filters input, .filters select { width: auto; min-width: 120px; padding: 8px 12px; font-size: 0.85rem; }

/* ========== LOADING ========== */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-right: 8px;
  vertical-align: middle;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .menu-toggle { display: none; }
  .nav {
    display: flex;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding: 6px 8px;
    gap: 6px;
  }
  .nav-link {
    flex: 1 0 auto;
    padding: 8px 14px;
    border-bottom: none;
    border-radius: var(--radius);
    text-align: center;
    font-size: 0.8rem;
    background: var(--bg);
    border: 1px solid var(--border);
  }
  .nav-link.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    border-bottom: none;
  }

  .form-row { grid-template-columns: 1fr 1fr; gap: 10px; }
  .summary-cards { grid-template-columns: repeat(2, 1fr); }
  .result-grid { grid-template-columns: 1fr; }
  .filters { flex-direction: column; }
  .filters input, .filters select { width: 100%; }

  .header-right .user-name { display: none; }
  .container { padding: 16px 12px; }
  .quote-details { grid-template-columns: repeat(2, 1fr); }
  .btn-row { flex-direction: column; }

  select, input[type="text"], input[type="number"], input[type="date"] {
    font-size: 16px;
    padding: 8px 10px;
  }
  .form-group { margin-bottom: 10px; }
  .form-group label { margin-bottom: 3px; font-size: 0.8rem; }
  .trade-form h2, h2 { font-size: 1.2rem; margin-bottom: 8px; }
  .container { padding: 12px 10px; }
  .toggle-btn { padding: 8px; font-size: 0.85rem; }
}

@media (max-width: 480px) {
  .summary-cards { grid-template-columns: 1fr; }
  .login-container { margin: 8vh auto; padding: 24px 16px; }
}

@media (min-width: 1024px) {
  .container { max-width: 1100px; }
  .result-grid { grid-template-columns: repeat(4, 1fr); }
}

/* ========== Log Badges ========== */
.log-level-badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.log-error  { background: #ff4d4d22; color: #ff4d4d; border: 1px solid #ff4d4d55; }
.log-warn   { background: #ffaa0022; color: #ffaa00; border: 1px solid #ffaa0055; }
.log-info   { background: #4488ff22; color: #4488ff; border: 1px solid #4488ff55; }
.log-debug  { background: #88888822; color: #aaa;    border: 1px solid #88888855; }

.log-cat-badge {
  display: inline-block;
  padding: 2px 7px;
  border-radius: 4px;
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.cat-trade    { background: #00cc8822; color: #00cc88; border: 1px solid #00cc8855; }
.cat-position { background: #aa88ff22; color: #aa88ff; border: 1px solid #aa88ff55; }
.cat-auth     { background: #4488ff22; color: #4488ff; border: 1px solid #4488ff55; }
.cat-error    { background: #ff4d4d22; color: #ff4d4d; border: 1px solid #ff4d4d55; }
.cat-user     { background: #ffaa0022; color: #ffaa00; border: 1px solid #ffaa0055; }

tr.log-error td { background: #ff4d4d08; }
tr.log-warn  td { background: #ffaa0008; }
tr.log-debug td { color: #888; }