/* ── Reset & Base ─────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg-primary:   #0d1117;
  --bg-secondary: #161b22;
  --bg-card:      #1c2128;
  --bg-input:     #21262d;
  --border:       #30363d;
  --text-primary: #e6edf3;
  --text-secondary:#8b949e;
  --text-muted:   #484f58;
  --green:        #3fb950;
  --green-dim:    #238636;
  --red:          #f85149;
  --red-dim:      #da3633;
  --yellow:       #d29922;
  --blue:         #58a6ff;
  --purple:       #bc8cff;
  --font-mono:    'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  --font-sans:    -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --radius:       8px;
  --shadow:       0 2px 8px rgba(0,0,0,.3);
}

html { font-size: 14px; }
body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.5;
}

/* ── Login View ──────────────────────────────────────── */
#login-view {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1rem;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  width: 100%;
  max-width: 380px;
  box-shadow: var(--shadow);
}

.login-card h1 {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  text-align: center;
  margin-bottom: .25rem;
  color: var(--green);
}

.login-card .subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: .85rem;
  margin-bottom: 1.5rem;
}

.login-card label {
  display: block;
  font-size: .8rem;
  color: var(--text-secondary);
  margin-bottom: .25rem;
  margin-top: .75rem;
}

.login-card input {
  width: 100%;
  padding: .6rem .75rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: .9rem;
  outline: none;
  transition: border-color .2s;
}

.login-card input:focus { border-color: var(--blue); }

.login-card button {
  width: 100%;
  margin-top: 1.25rem;
  padding: .7rem;
  background: var(--green-dim);
  color: #fff;
  border: none;
  border-radius: 6px;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s;
}

.login-card button:hover { background: var(--green); }

.login-error {
  color: var(--red);
  font-size: .8rem;
  text-align: center;
  margin-top: .75rem;
  min-height: 1.2em;
}

/* ── Dashboard View ──────────────────────────────────── */
#dashboard-view { display: none; }

/* Header */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 1.25rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: .75rem;
}

.header-left .logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--green);
}

.badge {
  display: inline-block;
  padding: .15rem .6rem;
  border-radius: 12px;
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.badge-running  { background: var(--green-dim); color: var(--green); }
.badge-idle     { background: var(--bg-input);   color: var(--yellow); }
.badge-stopped  { background: var(--red-dim);    color: #ffa198; }
.badge-error    { background: var(--red-dim);    color: #ffa198; }

.header-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-right .user-email {
  color: var(--text-secondary);
  font-size: .8rem;
}

.btn-logout {
  padding: .3rem .75rem;
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  font-size: .8rem;
  transition: all .2s;
}
.btn-logout:hover { color: var(--red); border-color: var(--red); }

/* Main container */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding: 1rem 1.25rem;
  max-width: 1400px;
  margin: 0 auto;
}

/* Status cards row */
.status-cards {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: .75rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  text-align: center;
}

.stat-card .stat-label {
  font-size: .7rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: .5px;
  margin-bottom: .35rem;
}

.stat-card .stat-value {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
}

.stat-positive { color: var(--green); }
.stat-negative { color: var(--red); }
.stat-neutral  { color: var(--text-primary); }

/* Panels */
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
}

.panel-header h2 {
  font-size: .85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-secondary);
}

.panel-body { padding: 1rem; }

/* Config form */
.config-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .75rem;
}

.config-form .form-group { display: flex; flex-direction: column; }
.config-form .form-group.full-width { grid-column: 1 / -1; }

.config-form label {
  font-size: .75rem;
  color: var(--text-secondary);
  margin-bottom: .2rem;
}

.config-form input,
.config-form select {
  padding: .45rem .6rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: .85rem;
  font-family: var(--font-mono);
  outline: none;
  transition: border-color .2s;
}

.config-form input:focus,
.config-form select:focus { border-color: var(--blue); }

.config-actions {
  grid-column: 1 / -1;
  display: flex;
  gap: .5rem;
  margin-top: .25rem;
}

.btn {
  flex: 1;
  padding: .55rem;
  border: none;
  border-radius: 6px;
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .2s;
}

.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn-start { background: var(--green-dim); color: #fff; }
.btn-start:hover:not(:disabled) { background: var(--green); }
.btn-stop  { background: var(--red-dim); color: #fff; }
.btn-stop:hover:not(:disabled) { background: var(--red); }

/* Grid visualization */
.grid-viz-container {
  width: 100%;
  min-height: 300px;
  position: relative;
}

.grid-viz-container canvas {
  width: 100% !important;
  height: 300px !important;
  display: block;
}

/* Chart */
.chart-container {
  width: 100%;
  min-height: 280px;
  position: relative;
}

.chart-container canvas {
  width: 100% !important;
  height: 280px !important;
}

/* Full-width panels */
.panel-wide {
  grid-column: 1 / -1;
}

/* Trades table */
.trades-table-wrap {
  max-height: 350px;
  overflow-y: auto;
}

.trades-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: .8rem;
}

.trades-table th {
  position: sticky;
  top: 0;
  background: var(--bg-secondary);
  padding: .5rem .6rem;
  text-align: left;
  font-size: .7rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: .5px;
  border-bottom: 1px solid var(--border);
}

.trades-table td {
  padding: .4rem .6rem;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.trades-table tr:hover { background: var(--bg-input); }

.side-buy  { color: var(--green); }
.side-sell { color: var(--red); }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
  font-size: .85rem;
}

/* ── Bot Tabs Bar ────────────────────────────────────── */
.bot-tabs {
  display: none; /* shown when logged in via JS */
  align-items: center;
  gap: .5rem;
  padding: .5rem 1.25rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  overflow-x: auto;
  position: sticky;
  top: 49px; /* below header */
  z-index: 99;
}

.bot-tab {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .35rem .85rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: .8rem;
  font-family: var(--font-mono);
  cursor: pointer;
  white-space: nowrap;
  transition: all .2s;
}

.bot-tab:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

.bot-tab.active {
  background: var(--green-dim);
  border-color: var(--green);
  color: #fff;
}

.bot-tab .tab-delete {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  font-size: .65rem;
  line-height: 1;
  color: var(--text-muted);
  transition: all .15s;
}

.bot-tab .tab-delete:hover {
  background: var(--red-dim);
  color: #fff;
}

.bot-tab.active .tab-delete {
  color: rgba(255,255,255,.5);
}
.bot-tab.active .tab-delete:hover {
  color: #fff;
  background: var(--red);
}

.btn-add-bot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: transparent;
  border: 1px dashed var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 1.1rem;
  cursor: pointer;
  transition: all .2s;
  flex-shrink: 0;
}

.btn-add-bot:hover {
  border-color: var(--green);
  color: var(--green);
  background: rgba(63,185,80,.08);
}

/* ── Modal ───────────────────────────────────────────── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.6);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

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

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  width: 100%;
  max-width: 480px;
  box-shadow: 0 8px 32px rgba(0,0,0,.5);
}

.modal h2 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.modal .form-group {
  margin-bottom: .85rem;
}

.modal .form-group label {
  display: block;
  font-size: .75rem;
  color: var(--text-secondary);
  margin-bottom: .25rem;
}

.modal .form-group input,
.modal .form-group select {
  width: 100%;
  padding: .5rem .65rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: .85rem;
  font-family: var(--font-mono);
  outline: none;
  transition: border-color .2s;
}

.modal .form-group input:focus,
.modal .form-group select:focus {
  border-color: var(--blue);
}

/* Preset cards */
.preset-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .5rem;
  margin-bottom: 1rem;
}

.preset-card {
  padding: .65rem .75rem;
  background: var(--bg-input);
  border: 2px solid var(--border);
  border-radius: 6px;
  cursor: pointer;
  transition: all .2s;
  text-align: center;
}

.preset-card:hover {
  border-color: var(--text-muted);
}

.preset-card.selected {
  border-color: var(--green);
  background: rgba(63,185,80,.08);
}

.preset-card .preset-name {
  font-size: .8rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: .2rem;
}

.preset-card .preset-desc {
  font-size: .65rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* Custom config fields (shown when Custom selected) */
.custom-config {
  display: none;
}

.custom-config.visible {
  display: block;
}

.custom-config .config-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .5rem;
}

/* Modal actions */
.modal-actions {
  display: flex;
  gap: .5rem;
  margin-top: 1.25rem;
}

.modal-actions .btn {
  flex: 1;
}

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

.btn-secondary:hover:not(:disabled) {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

/* ── Account Panel ───────────────────────────────────── */
.account-panel {
  grid-column: 1 / -1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 3px solid var(--text-muted);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  transition: border-left-color .3s;
}

.account-panel.accent-positive { border-left-color: var(--green); }
.account-panel.accent-negative { border-left-color: var(--red); }

.account-header {
  font-size: .7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .5px;
  color: var(--text-secondary);
  margin-bottom: .75rem;
}

.account-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .5rem 1.5rem;
}

.account-item {
  display: flex;
  flex-direction: column;
  gap: .15rem;
}

.account-label {
  font-size: .65rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: .3px;
}

.account-value {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.balance-hero {
  font-size: 1.8rem;
  line-height: 1.2;
}

.balance-delta {
  font-size: .85rem;
  font-weight: 600;
}

.balance-delta.delta-positive { color: var(--green); }
.balance-delta.delta-negative { color: var(--red); }

/* ── Extra cards row (futures/indicators) ────────────── */
.extra-cards {
  grid-column: 1 / -1;
}

/* Leverage display */
.stat-warning { color: var(--yellow); }

/* Range slider styling */
.config-form input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}

.config-form input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--green);
  border-radius: 50%;
  cursor: pointer;
}

.config-form input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--green);
  border: none;
  border-radius: 50%;
  cursor: pointer;
}

.range-value {
  display: inline-block;
  margin-top: .25rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--green);
  font-weight: 700;
}

/* Modal range slider */
.modal input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 6px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 3px;
  outline: none;
  cursor: pointer;
}

.modal input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--green);
  border-radius: 50%;
  cursor: pointer;
}

.modal input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--green);
  border: none;
  border-radius: 50%;
  cursor: pointer;
}

.modal .range-value {
  display: inline-block;
  margin-top: .25rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--green);
  font-weight: 700;
}

/* ── Toast Notifications ─────────────────────────────── */
.toast-container {
  position: fixed;
  top: 60px;
  right: 1rem;
  z-index: 300;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  max-width: 380px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: .6rem;
  padding: .75rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0,0,0,.5);
  animation: toast-in .3s ease-out;
  pointer-events: auto;
  cursor: pointer;
  transition: opacity .3s, transform .3s;
}

.toast.toast-exit {
  opacity: 0;
  transform: translateX(100%);
}

.toast-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-top: .05rem;
}

.toast-body {
  flex: 1;
  font-size: .8rem;
  line-height: 1.4;
  color: var(--text-primary);
}

.toast-time {
  font-size: .65rem;
  color: var(--text-muted);
  margin-top: .2rem;
}

/* Toast types */
.toast-success { border-left: 3px solid var(--green); }
.toast-success .toast-icon { color: var(--green); }

.toast-warning { border-left: 3px solid var(--yellow); }
.toast-warning .toast-icon { color: var(--yellow); }

.toast-error { border-left: 3px solid var(--red); }
.toast-error .toast-icon { color: var(--red); }

.toast-info { border-left: 3px solid var(--blue); }
.toast-info .toast-icon { color: var(--blue); }

@keyframes toast-in {
  from { opacity: 0; transform: translateX(100%); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ── Activity Log ────────────────────────────────────── */
.activity-log {
  max-height: 280px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: .75rem;
  line-height: 1.6;
}

.log-empty {
  color: var(--text-muted);
  text-align: center;
  padding: 1.5rem;
  font-size: .8rem;
}

.log-entry {
  display: flex;
  gap: .6rem;
  padding: .3rem .5rem;
  border-bottom: 1px solid rgba(48,54,61,.5);
  align-items: flex-start;
}

.log-entry:hover {
  background: var(--bg-input);
}

.log-time {
  color: var(--text-muted);
  flex-shrink: 0;
  font-size: .7rem;
  min-width: 70px;
}

.log-icon {
  flex-shrink: 0;
  width: 14px;
  text-align: center;
}

.log-msg {
  flex: 1;
  word-break: break-word;
}

.log-info .log-icon { color: var(--blue); }
.log-info .log-msg { color: var(--text-secondary); }
.log-success .log-icon { color: var(--green); }
.log-success .log-msg { color: var(--green); }
.log-warning .log-icon { color: var(--yellow); }
.log-warning .log-msg { color: var(--yellow); }
.log-error .log-icon { color: var(--red); }
.log-error .log-msg { color: var(--red); }
.log-trade .log-icon { color: var(--purple); }
.log-trade .log-msg { color: var(--text-primary); }

.btn-clear-log {
  padding: .2rem .5rem;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  font-size: .65rem;
  transition: all .2s;
}

.btn-clear-log:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 900px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
  .status-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 600px) {
  .account-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .balance-hero {
    font-size: 1.4rem;
  }
  .status-cards {
    grid-template-columns: repeat(2, 1fr);
  }
  .header {
    flex-direction: column;
    gap: .5rem;
  }
  .config-form {
    grid-template-columns: 1fr;
  }
  .bot-tabs {
    top: 81px;
  }
  .preset-grid {
    grid-template-columns: 1fr;
  }
  .custom-config .config-grid {
    grid-template-columns: 1fr;
  }
}