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

:root {
  --bg: #0d0f14;
  --bg-card: #1a1d26;
  --bg-input: #12151f;
  --border: #2a2d3e;
  --text: #e8eaed;
  --text-muted: #8b9199;
  --green: #00d4aa;
  --red: #f03e3e;
  --yellow: #f0b94e;
  --blue: #4d8af0;
  --radius: 8px;
  --shadow: 0 4px 16px rgba(0,0,0,0.4);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Segoe UI', system-ui, sans-serif;
  font-size: 14px;
  min-height: 100vh;
}

/* ─── LOGIN PAGE ─── */
.login-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 24px;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px 36px;
  width: 100%;
  max-width: 400px;
  box-shadow: var(--shadow);
}

.login-logo {
  text-align: center;
  margin-bottom: 28px;
}

.login-logo h1 {
  font-size: 24px;
  font-weight: 700;
  color: var(--green);
  letter-spacing: 1px;
}

.login-logo p {
  color: var(--text-muted);
  font-size: 13px;
  margin-top: 4px;
}

.step { display: none; }
.step.active { display: block; }

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: var(--radius);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus {
  border-color: var(--green);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 16px;
  border: none;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  text-decoration: none;
}

.btn:active { transform: scale(0.98); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--green); color: #000; width: 100%; margin-top: 8px; }
.btn-primary:hover { opacity: 0.9; }
.btn-buy { background: var(--green); color: #000; }
.btn-sell { background: var(--red); color: #fff; }
.btn-outline { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-outline:hover { border-color: var(--text-muted); }
.btn-danger { background: var(--red); color: #fff; padding: 5px 10px; font-size: 12px; }
.btn-sm { padding: 5px 10px; font-size: 12px; }

.error-msg {
  background: rgba(240,62,62,0.12);
  border: 1px solid rgba(240,62,62,0.3);
  color: var(--red);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 13px;
  margin-top: 12px;
  display: none;
}

.error-msg.show { display: block; }
.success-msg {
  background: rgba(0,212,170,0.12);
  border: 1px solid rgba(0,212,170,0.3);
  color: var(--green);
  border-radius: var(--radius);
  padding: 10px 12px;
  font-size: 13px;
  margin-top: 12px;
  display: none;
}
.success-msg.show { display: block; }

/* ─── DASHBOARD LAYOUT ─── */
.header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  height: 56px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-logo {
  font-size: 18px;
  font-weight: 700;
  color: var(--green);
  letter-spacing: 1px;
}

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

.header-stat {
  text-align: center;
}

.header-stat .label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.header-stat .value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

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

.user-info {
  text-align: right;
}

.user-info .name { font-size: 13px; font-weight: 600; }
.user-info .id { font-size: 11px; color: var(--text-muted); }

/* ─── TABS ─── */
.tabs {
  display: flex;
  gap: 2px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 0 24px;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  padding: 14px 16px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--green); border-bottom-color: var(--green); }

.tab-content { display: none; padding: 20px 24px; }
.tab-content.active { display: block; }

/* ─── CARDS ─── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  margin-bottom: 16px;
}

.card-title {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }

/* ─── TABLES ─── */
.table-wrap { overflow-x: auto; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

thead th {
  background: var(--bg);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: 10px 12px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

tbody tr { border-bottom: 1px solid var(--border); transition: background 0.15s; }
tbody tr:hover { background: rgba(255,255,255,0.03); }
tbody td { padding: 10px 12px; color: var(--text); }
tbody tr:last-child { border-bottom: none; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-buy { background: rgba(0,212,170,0.15); color: var(--green); }
.badge-sell { background: rgba(240,62,62,0.15); color: var(--red); }
.badge-open { background: rgba(77,138,240,0.15); color: var(--blue); }
.badge-complete { background: rgba(0,212,170,0.15); color: var(--green); }
.badge-rejected { background: rgba(240,62,62,0.15); color: var(--red); }
.badge-cancelled { background: rgba(139,145,153,0.2); color: var(--text-muted); }

/* ─── ORDER FORM ─── */
.order-layout { display: grid; grid-template-columns: 340px 1fr; gap: 16px; }

.order-form-card .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.order-form-card select {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: var(--radius);
  font-size: 14px;
  outline: none;
}

.order-form-card select:focus { border-color: var(--green); }

.order-type-toggle {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}

.toggle-btn {
  flex: 1;
  padding: 8px;
  border: 1px solid var(--border);
  background: var(--bg-input);
  color: var(--text-muted);
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  transition: all 0.2s;
  text-align: center;
}

.toggle-btn.active-buy { background: rgba(0,212,170,0.15); border-color: var(--green); color: var(--green); }
.toggle-btn.active-sell { background: rgba(240,62,62,0.15); border-color: var(--red); color: var(--red); }

.action-btns { display: flex; gap: 8px; margin-top: 4px; }
.action-btns .btn { flex: 1; }

/* ─── FUNDS ─── */
.fund-stat {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.fund-stat .label { font-size: 11px; color: var(--text-muted); text-transform: uppercase; margin-bottom: 4px; }
.fund-stat .amount { font-size: 18px; font-weight: 700; }
.fund-stat .amount.positive { color: var(--green); }
.fund-stat .amount.negative { color: var(--red); }

/* ─── P&L ─── */
.pnl-positive { color: var(--green); }
.pnl-negative { color: var(--red); }

/* ─── LOADING ─── */
.loading {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
}

.spinner {
  width: 28px; height: 28px;
  border: 3px solid var(--border);
  border-top-color: var(--green);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  margin: 0 auto 12px;
}

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

.empty-state {
  text-align: center;
  padding: 40px;
  color: var(--text-muted);
  font-size: 13px;
}

/* ─── MODAL ─── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.7);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

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

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  width: 100%;
  max-width: 460px;
  box-shadow: var(--shadow);
}

.modal-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
}

.modal-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }

/* ─── TOAST ─── */
#toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  font-size: 13px;
  box-shadow: var(--shadow);
  min-width: 260px;
  animation: slide-in 0.3s ease;
}

.toast.toast-success { border-left: 3px solid var(--green); }
.toast.toast-error { border-left: 3px solid var(--red); }
.toast.toast-info { border-left: 3px solid var(--blue); }

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

/* ─── RESPONSIVE ─── */
@media (max-width: 900px) {
  .order-layout { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .header-center { display: none; }
}