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

:root {
  --text-main: #ffffff;
  --text-body: #d6e0e8;
  --text-muted: #b4c2cd;
  --text-soft: #9eb0be;
  --text-dim: #8fa2b1;

  /* Mobile design tokens */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 12px;
  --space-lg: 16px;
  --space-xl: 24px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --tap-min-height: 44px;
  --mobile-font-body: 14px;
  --mobile-font-small: 12px;
  --mobile-font-title: 24px;
  --mobile-font-section: 18px;
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: #080808;
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: #111; }
::-webkit-scrollbar-thumb { background: #00d4ff; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #0099cc; }

/* Navbar */
.navbar {
  background: #080808;
  padding: 0 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid rgba(0,212,255,0.2);
}
.navbar .brand {
  color: var(--text-main);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 12px;
}
.navbar .brand img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  filter: drop-shadow(0 0 12px rgba(0,212,255,0.3));
}
.navbar .brand span {
  color: #00d4ff;
}
.navbar .nav-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

/* Buttons */
.btn {
  padding: 9px 22px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  text-decoration: none;
  letter-spacing: 0.02em;
}
.btn-primary {
  background: #00d4ff;
  color: #000000;
  font-weight: 700;
}
.btn-primary:hover {
  background: #33ddff;
  box-shadow: 0 0 16px rgba(0,212,255,0.4);
}
.btn-outline {
  background: transparent;
  color: #00d4ff;
  border: 1px solid #00d4ff;
}
.btn-outline:hover {
  background: rgba(0,212,255,0.1);
  box-shadow: 0 0 12px rgba(0,212,255,0.2);
}
.btn-danger {
  background: #ff3b3b;
  color: #fff;
}
.btn-danger:hover { background: #ff5555; box-shadow: 0 0 12px rgba(255,59,59,0.3); }
.btn-sm {
  padding: 6px 14px;
  font-size: 13px;
}
.btn-success {
  background: transparent;
  color: #00ff88;
  border: 1px solid #00ff88;
}
.btn-success:hover { background: rgba(0,255,136,0.1); }
.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none !important;
}

/* Cards */
.card {
  background: var(--card-bg, #111);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 4px;
  padding: 24px;
  margin-bottom: 20px;
  transition: border-color 0.2s, background 0.3s;
}
.card:hover {
  border-color: rgba(0,212,255,0.2);
}
.card-title {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin: 0 0 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 0.05em;
}

/* Form elements */
.form-group { margin-bottom: 16px; }
.form-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.form-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
  font-size: 14px;
  transition: all 0.2s;
  background: var(--surface-bg, #0f0f0f);
  color: #ffffff;
  font-family: inherit;
}
.form-input::placeholder { color: #7f93a2; }
.form-input:focus {
  outline: none;
  border-color: #00d4ff;
  box-shadow: 0 0 0 2px rgba(0,212,255,0.15);
}
.form-select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
  font-size: 14px;
  background-color: var(--surface-bg, #0f0f0f);
  color: #ffffff;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
  -webkit-appearance: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%23b4c2cd' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}
.form-select:focus {
  outline: none;
  border-color: #00d4ff;
  box-shadow: 0 0 0 2px rgba(0,212,255,0.15);
}
.form-select option { background: #111; }
.form-help {
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.65;
  color: var(--text-dim);
}
.form-help strong {
  color: var(--text-body);
  font-weight: 700;
}
.strategy-note {
  margin-top: 10px;
  padding: 12px 14px;
  border-radius: 4px;
  background: rgba(0, 212, 255, 0.05);
  border: 1px solid rgba(0, 212, 255, 0.14);
  color: var(--text-body);
  font-size: 12px;
  line-height: 1.75;
}
.strategy-note strong {
  color: #00d4ff;
}
.preset-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}
.preset-btn {
  border: 1px solid rgba(255,255,255,0.1);
  background: #0f0f0f;
  color: var(--text-body);
  padding: 10px 14px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  transition: all 0.2s;
}
.preset-btn:hover {
  border-color: rgba(0,212,255,0.35);
  color: #ffffff;
}
.preset-btn.active {
  border-color: #00d4ff;
  background: rgba(0,212,255,0.10);
  color: #00d4ff;
  box-shadow: 0 0 0 1px rgba(0,212,255,0.12) inset;
}
.preset-caption {
  margin-top: 4px;
  margin-bottom: 14px;
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* Alert */
.alert {
  padding: 10px 14px;
  border-radius: 4px;
  font-size: 13px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-left: 3px solid;
}
.alert-success { background: rgba(0,255,136,0.06); color: #00ff88; border-left-color: #00ff88; }
.alert-error { background: rgba(255,59,59,0.06); color: #ff3b3b; border-left-color: #ff3b3b; }
.alert-info { background: rgba(0,212,255,0.06); color: #00d4ff; border-left-color: #00d4ff; }
.alert-warning { background: rgba(255,170,0,0.06); color: #ffaa00; border-left-color: #ffaa00; }

/* Table */
.table-wrapper { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th {
  background: var(--surface-bg, #0f0f0f);
  color: var(--text-soft);
  font-weight: 600;
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  white-space: nowrap;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-size: 11px;
  transition: background 0.3s;
}
td {
  padding: 10px 14px;
  border-bottom: 1px solid rgba(255,255,255,0.05);
  vertical-align: middle;
  color: var(--text-body);
}
tr:hover td { background: rgba(0,212,255,0.04); }

/* Badge */
.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 2px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
}
.badge-success { background: rgba(0,255,136,0.1); color: #00ff88; border: 1px solid rgba(0,255,136,0.2); }
.badge-danger { background: rgba(255,59,59,0.1); color: #ff3b3b; border: 1px solid rgba(255,59,59,0.2); }
.badge-warning { background: rgba(255,170,0,0.1); color: #ffaa00; border: 1px solid rgba(255,170,0,0.2); }
.badge-info { background: rgba(0,212,255,0.1); color: #00d4ff; border: 1px solid rgba(0,212,255,0.2); }
.badge-secondary { background: rgba(255,255,255,0.06); color: var(--text-muted); border: 1px solid rgba(255,255,255,0.1); }

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 20px;
  gap: 4px;
  overflow-x: auto;
  -ms-overflow-style: none;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab-btn {
  padding: 9px 18px;
  background: none;
  border: none;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-dim);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all 0.2s;
  white-space: nowrap;
  letter-spacing: 0.03em;
  font-family: inherit;
}
.tab-btn:hover { color: var(--text-body); }
.tab-btn.active {
  color: #00d4ff;
  border-bottom-color: #00d4ff;
}
.tab-content { display: none; }
.tab-content.active { display: block; }

/* Spinner */
.spinner {
  display: inline-block;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(0,212,255,0.2);
  border-top-color: #00d4ff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Toast */
.toast-container {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
}
.toast {
  min-width: 220px;
  max-width: 90vw;
  padding: 12px 20px;
  border-radius: 6px;
  font-size: 13px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.5);
  animation: toastIn 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: #1a1a1a;
  border: 1px solid rgba(255,255,255,0.1);
  border-top: 3px solid #00d4ff;
  color: #fff;
  pointer-events: auto;
  text-align: center;
}
@keyframes toastIn {
  from { transform: translateY(-20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}
.toast-success { border-top-color: #00ff88; }
.toast-error { border-top-color: #ff3b3b; }
.toast-info { border-top-color: #00d4ff; }

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}
.stat-card {
  background: var(--card-bg, #111);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 4px;
  padding: 20px;
  text-align: center;
  transition: border-color 0.2s, background 0.3s;
}
.stat-card:hover { border-color: rgba(0,212,255,0.2); }
.stat-number {
  font-size: 34px;
  font-weight: 700;
  color: #00d4ff;
  letter-spacing: -0.02em;
}
.stat-label {
  font-size: 12px;
  color: var(--text-soft);
  margin-top: 4px;
  letter-spacing: 0.05em;
}

/* Price cards */
.price-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.price-card {
  background: #0f0f0f;
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 4px;
  padding: 16px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.2s;
}
.price-card:hover { border-color: rgba(0,212,255,0.25); }
.price-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 32px;
  height: 32px;
  background: rgba(0,212,255,0.06);
  clip-path: polygon(100% 0, 0 0, 100% 100%);
}
.price-card .bank-name {
  font-size: 12px;
  color: var(--text-soft);
  margin-bottom: 8px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.price-card .price-value {
  font-size: 26px;
  font-weight: 700;
  color: #00d4ff;
  letter-spacing: -0.02em;
}
.price-card .price-unit { font-size: 12px; color: var(--text-dim); }
.price-card .price-range { font-size: 11px; color: var(--text-soft); margin-top: 6px; }

/* Modal */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  z-index: 200;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}
.modal-overlay.show { display: flex; }
.modal {
  background: var(--card-bg, #111);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 4px;
  padding: 28px;
  width: 460px;
  max-width: 95vw;
  box-shadow: 0 0 40px rgba(0,212,255,0.1), 0 20px 60px rgba(0,0,0,0.6);
  transition: background 0.3s;
}
.modal .form-input,
.modal .form-select,
.modal textarea.form-input {
  background: var(--surface-bg, #0f0f0f);
  transition: background 0.3s;
}
.modal-title {
  font-size: 16px;
  font-weight: 700;
  color: #00d4ff;
  margin: 0 0 20px;
  letter-spacing: 0.05em;
}
.modal-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  margin-top: 20px;
}

/* Checkbox group */
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.checkbox-item {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--surface-bg, #0f0f0f);
  padding: 7px 14px;
  border-radius: 4px;
  cursor: pointer;
  border: 1px solid rgba(255,255,255,0.08);
  transition: all 0.2s;
  font-size: 13px;
  color: var(--text-muted);
}
.checkbox-item:hover { border-color: rgba(0,212,255,0.3); color: var(--text-body); }
.checkbox-item input[type=checkbox] { display: none; }
.checkbox-item.checked {
  background: rgba(0,212,255,0.08);
  border-color: #00d4ff;
  color: #00d4ff;
  font-weight: 600;
}

/* Pagination */
.pagination {
  display: flex;
  gap: 4px;
  justify-content: center;
  margin-top: 16px;
}
.page-btn {
  padding: 5px 11px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 4px;
  background: var(--card-bg, #111);
  color: var(--text-soft);
  cursor: pointer;
  font-size: 12px;
  transition: all 0.2s;
  font-family: inherit;
}
.page-btn:hover { border-color: #00d4ff; color: #00d4ff; }
.page-btn.active { background: #00d4ff; color: #000; border-color: #00d4ff; font-weight: 700; }

/* Keys box */
.keys-box {
  background: var(--surface-bg, #0f0f0f);
  border: 1px solid rgba(0,212,255,0.1);
  border-radius: 4px;
  padding: 14px;
  font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  font-size: 12px;
  max-height: 200px;
  overflow-y: auto;
  word-break: break-all;
  line-height: 2;
  color: #00d4ff;
}

/* Two-col layout */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }

/* ── Table scroll hint ── */
.table-wrapper {
  position: relative;
}
.table-wrapper::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 24px;
  background: linear-gradient(to right, transparent, rgba(8,8,8,0.85));
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
}

/* ── Responsive ── */

/* Tablet / small laptop */
@media (max-width: 1024px) {
  .navbar { padding: 0 20px; }
}

/* Mobile main breakpoint */
@media (max-width: 768px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .price-grid { grid-template-columns: 1fr; }
  .navbar { padding: 0 16px; height: 56px; }
  .navbar .brand { font-size: 17px; gap: 8px; }
  .navbar .brand img { width: 36px; height: 36px; }
  .two-col { grid-template-columns: 1fr; }

  /* Modal mobile */
  .modal {
    padding: 20px;
    width: calc(100vw - 24px) !important;
    max-width: calc(100vw - 24px) !important;
    max-height: calc(100dvh - 24px);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
  }
  .modal-actions {
    flex-direction: column-reverse;
    position: sticky;
    bottom: 0;
    padding-top: 12px;
    background: var(--card-bg, #111);
    margin-top: auto;
  }
  .modal-actions .btn { width: 100%; min-height: var(--tap-min-height); }
  .modal-overlay.show {
    align-items: flex-end;
    padding: 12px;
  }

  /* Table scroll hint visible on mobile */
  .table-wrapper::after { opacity: 1; }
  .table-wrapper { -webkit-overflow-scrolling: touch; }

  /* ── Table card-style rendering on mobile ── */
  .table-card-mobile table { border: 0; }
  .table-card-mobile thead { display: none; }
  .table-card-mobile tr {
    display: block;
    background: var(--panel-bg, #0d0d0d);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 4px;
    padding: 12px;
    margin-bottom: 10px;
  }
  .table-card-mobile tr:hover td { background: transparent; }
  .table-card-mobile td {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 5px 0;
    border-bottom: 1px solid rgba(255,255,255,0.04);
    font-size: 13px;
    gap: 8px;
  }
  .table-card-mobile td:last-child { border-bottom: none; padding-bottom: 0; }
  .table-card-mobile td:first-child { padding-top: 0; }
  .table-card-mobile td::before {
    content: attr(data-label);
    font-size: 11px;
    font-weight: 600;
    color: var(--text-soft);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    flex-shrink: 0;
    min-width: 70px;
  }
  /* Hide scroll hint when card mode is active */
  .table-card-mobile.table-wrapper::after { display: none; }

  /* Form elements mobile sizing */
  .btn { min-height: var(--tap-min-height); }
  .form-input, .form-select { min-height: var(--tap-min-height); font-size: var(--mobile-font-body); }

  /* Container padding */
  .card { padding: 16px; }

  /* Form group spacing */
  .modal .form-group { margin-bottom: var(--space-md); }
}

/* Small phone */
@media (max-width: 480px) {
  .navbar { padding: 0 12px; }
  .navbar .brand { font-size: 15px; gap: 6px; }
  .navbar .brand img { width: 32px; height: 32px; }
  .navbar .nav-actions { gap: 6px; }
  .navbar .nav-actions .btn { padding: 7px 12px; font-size: 12px; }

  .stats-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat-card { padding: 14px 10px; }
  .stat-number { font-size: 26px; }
  .stat-label { font-size: 11px; }

  .card { padding: 14px; margin-bottom: 14px; }
  .card-title { font-size: var(--mobile-font-section); margin-bottom: 14px; padding-bottom: 10px; }

  /* Tabs scrollable */
  .tabs { gap: 0; overflow-x: auto; -webkit-overflow-scrolling: touch; scroll-snap-type: x mandatory; }
  .tab-btn { padding: 9px 14px; font-size: 12px; scroll-snap-align: start; flex-shrink: 0; min-height: var(--tap-min-height); }
  .tab-btn.active { position: relative; }

  /* Checkbox group */
  .checkbox-group { gap: 6px; }
  .checkbox-item { padding: 8px 12px; font-size: 12px; min-height: var(--tap-min-height); }
}

/* Ultra narrow */
@media (max-width: 360px) {
  .navbar .brand { font-size: 14px; }
  .navbar .nav-actions .btn { padding: 6px 10px; font-size: 11px; }
  .stats-grid { grid-template-columns: 1fr; }
  .card { padding: 12px; }
  .modal { padding: 16px; }
  .btn-sm { padding: 6px 10px; font-size: 12px; }
}