/* Transfer Monitor Design System */
/* Based on "Financial Trust" aesthetic - professional, clean, trustworthy */

/* ==================== FONTS ==================== */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

/* ==================== CSS VARIABLES ==================== */
:root {
  /* Core palette - trustworthy finance */
  --navy-900: #0a1628;
  --navy-800: #111d33;
  --navy-700: #1a2942;
  --navy-600: #243654;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --white: #ffffff;

  /* Semantic colors */
  --gain: #059669;
  --gain-bg: #ecfdf5;
  --gain-light: #10b981;
  --loss: #dc2626;
  --loss-bg: #fef2f2;
  --loss-light: #ef4444;
  --accent: #0ea5e9;
  --accent-dark: #0284c7;
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --warning-border: #fcd34d;

  /* Typography */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Plus Jakarta Sans', system-ui, sans-serif;

  /* Spacing scale */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(10, 22, 40, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(10, 22, 40, 0.06), 0 2px 4px -2px rgba(10, 22, 40, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(10, 22, 40, 0.08), 0 4px 6px -4px rgba(10, 22, 40, 0.04);
  --shadow-card: 0 1px 3px rgba(10, 22, 40, 0.06), 0 1px 2px rgba(10, 22, 40, 0.04);

  /* Border radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
}

/* ==================== RESET & BASE ==================== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: linear-gradient(180deg, var(--slate-100) 0%, var(--slate-50) 100%);
  min-height: 100vh;
  color: var(--navy-900);
  line-height: 1.5;
}

/* ==================== HEADER / NAVIGATION ==================== */
.header {
  background: var(--navy-900);
  padding: var(--space-4) var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-icon svg {
  width: 20px;
  height: 20px;
  color: white;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.375rem;
  color: var(--white);
  letter-spacing: -0.01em;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-link {
  color: var(--slate-400);
  text-decoration: none;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  transition: all 0.15s ease;
}

.nav-link:hover {
  color: var(--white);
  background: var(--navy-700);
}

.nav-link.active {
  color: var(--white);
  background: var(--navy-600);
}

/* Dropdown menu */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-btn {
  color: var(--slate-400);
  background: none;
  border: none;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  transition: all 0.15s ease;
}

.nav-dropdown-btn:hover,
.nav-dropdown.open .nav-dropdown-btn {
  color: var(--white);
  background: var(--navy-700);
}

.nav-dropdown-btn svg {
  width: 14px;
  height: 14px;
  transition: transform 0.15s ease;
}

.nav-dropdown.open .nav-dropdown-btn svg {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: var(--space-1);
  background: var(--navy-800);
  border-radius: var(--radius-md);
  padding: var(--space-2);
  min-width: 160px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: all 0.15s ease;
}

.nav-dropdown.open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-menu a {
  display: block;
  color: var(--slate-300);
  text-decoration: none;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  font-weight: 500;
  transition: all 0.15s ease;
}

.nav-dropdown-menu a:hover {
  color: var(--white);
  background: var(--navy-700);
}

.logout-btn {
  background: transparent;
  border: 1px solid var(--navy-600);
  color: var(--slate-400);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  margin-left: var(--space-4);
  text-decoration: none;
}

.logout-btn:hover {
  border-color: var(--loss-light);
  color: var(--loss-light);
}

/* ==================== MAIN CONTENT ==================== */
.main {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-8) var(--space-12);
}

/* ==================== PAGE HEADER ==================== */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  gap: var(--space-6);
  flex-wrap: wrap;
}

.page-title-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.page-title {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 400;
  color: var(--navy-900);
  letter-spacing: -0.02em;
}

.page-subtitle {
  color: var(--slate-500);
  font-size: 0.9375rem;
}

.page-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* ==================== CARDS ==================== */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--slate-100);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
  margin-bottom: var(--space-8);
}

/* Summary cards with colored top borders */
.summary-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--slate-100);
  position: relative;
  overflow: hidden;
  transition: all 0.2s ease;
}

.summary-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.summary-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--slate-200);
}

.summary-card.gain::before {
  background: linear-gradient(90deg, var(--gain) 0%, var(--gain-light) 100%);
}

.summary-card.loss::before {
  background: linear-gradient(90deg, var(--loss) 0%, var(--loss-light) 100%);
}

.summary-card.accent::before {
  background: linear-gradient(90deg, var(--accent-dark) 0%, var(--accent) 100%);
}

.summary-card.neutral::before {
  background: linear-gradient(90deg, var(--slate-400) 0%, var(--slate-300) 100%);
}

.summary-label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--slate-500);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: var(--space-2);
}

.summary-value {
  font-family: var(--font-display);
  font-size: 1.875rem;
  font-weight: 400;
  color: var(--navy-900);
  letter-spacing: -0.02em;
}

.summary-value.gain {
  color: var(--gain);
}
.summary-value.loss {
  color: var(--loss);
}

.summary-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: 0.75rem;
  font-weight: 600;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  margin-top: var(--space-3);
}

.summary-badge.gain {
  background: var(--gain-bg);
  color: var(--gain);
}

.summary-badge.loss {
  background: var(--loss-bg);
  color: var(--loss);
}

.summary-badge.neutral {
  background: var(--slate-100);
  color: var(--slate-500);
}

/* Link cards */
.link-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--slate-100);
  transition: all 0.2s ease;
}

.link-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.link-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--navy-900);
  margin-bottom: var(--space-2);
}

.link-card p {
  color: var(--slate-500);
  font-size: 0.875rem;
  margin-bottom: var(--space-4);
}

/* ==================== BUTTONS ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
  border: none;
}

.btn svg {
  width: 16px;
  height: 16px;
}

.btn-primary {
  background: var(--navy-900);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--navy-800);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--white);
  color: var(--navy-900);
  border: 1px solid var(--slate-200);
}

.btn-secondary:hover {
  background: var(--slate-50);
  border-color: var(--slate-300);
}

.btn-accent {
  background: var(--accent);
  color: var(--white);
}

.btn-accent:hover {
  background: var(--accent-dark);
}

.btn-group {
  display: flex;
  gap: var(--space-3);
}

/* ==================== FORMS ==================== */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--slate-500);
  margin-bottom: var(--space-2);
}

.form-input,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--navy-900);
  transition: all 0.15s ease;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: var(--space-10);
}

/* ==================== TABLES ==================== */
.table-section {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--slate-100);
  overflow: hidden;
}

.table-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--slate-100);
  background: var(--slate-50);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.table-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--navy-900);
}

.table-controls {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.search-input {
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-4);
  padding-left: var(--space-10);
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--navy-900);
  width: 220px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cpath d='m21 21-4.3-4.3'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 12px center;
  transition: all 0.15s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

.search-input::placeholder {
  color: var(--slate-400);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
}

.data-table thead {
  background: var(--slate-50);
  border-bottom: 1px solid var(--slate-200);
}

.data-table th {
  padding: var(--space-4) var(--space-5);
  text-align: left;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--slate-500);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.data-table th.text-right,
.data-table td.text-right {
  text-align: right;
}

.data-table tbody tr {
  border-bottom: 1px solid var(--slate-100);
  transition: background 0.1s ease;
}

.data-table tbody tr:hover {
  background: var(--slate-50);
}

.data-table tbody tr:last-child {
  border-bottom: none;
}

.data-table td {
  padding: var(--space-4) var(--space-5);
  font-size: 0.875rem;
  color: var(--navy-900);
  vertical-align: middle;
}

.data-table .mono {
  font-variant-numeric: tabular-nums;
}

.data-table .muted {
  color: var(--slate-500);
}

.data-table .gain {
  color: var(--gain);
  font-weight: 600;
}
.data-table .loss {
  color: var(--loss);
  font-weight: 600;
}

.table-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--slate-100);
  background: var(--slate-50);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.pagination-info {
  font-size: 0.8125rem;
  color: var(--slate-500);
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.pagination-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.15s ease;
  color: var(--slate-500);
}

.pagination-btn:hover:not(:disabled) {
  background: var(--slate-100);
  border-color: var(--slate-300);
  color: var(--navy-900);
}

.pagination-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.pagination-btn svg {
  width: 16px;
  height: 16px;
}

/* ==================== BADGES ==================== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-1) var(--space-3);
  border-radius: 999px;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.badge-amber {
  background: #fef3c7;
  color: #b45309;
}

.badge-indigo {
  background: #e0e7ff;
  color: #4338ca;
}

.badge-green {
  background: var(--gain-bg);
  color: var(--gain);
}

.badge-red {
  background: var(--loss-bg);
  color: var(--loss);
}

.badge-slate {
  background: var(--slate-100);
  color: var(--slate-500);
}

/* ==================== NOTICES / ALERTS ==================== */
.notice {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  margin-bottom: var(--space-6);
  font-size: 0.8125rem;
}

.notice svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}

.notice-warning {
  background: var(--warning-bg);
  border: 1px solid var(--warning-border);
  color: #92400e;
}

.notice-warning svg {
  color: var(--warning);
}

/* ==================== LOADING STATE ==================== */
.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(248, 250, 252, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}

.loading-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid var(--slate-200);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

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

.loading-overlay.hidden {
  display: none;
}

/* ==================== EMPTY STATE ==================== */
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-8);
}

.empty-state svg {
  width: 64px;
  height: 64px;
  color: var(--slate-300);
  margin-bottom: var(--space-4);
}

.empty-state h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--navy-900);
  margin-bottom: var(--space-2);
}

.empty-state p {
  color: var(--slate-500);
  font-size: 0.875rem;
}

/* ==================== ANIMATIONS ==================== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeIn 0.3s ease-out forwards;
}

.delay-1 {
  animation-delay: 0.05s;
  opacity: 0;
}
.delay-2 {
  animation-delay: 0.1s;
  opacity: 0;
}
.delay-3 {
  animation-delay: 0.15s;
  opacity: 0;
}
.delay-4 {
  animation-delay: 0.2s;
  opacity: 0;
}

/* ==================== UTILITY CLASSES ==================== */
.text-gain {
  color: var(--gain);
}
.text-loss {
  color: var(--loss);
}
.text-muted {
  color: var(--slate-500);
}
.font-display {
  font-family: var(--font-display);
}
.font-mono {
  font-variant-numeric: tabular-nums;
}
.font-semibold {
  font-weight: 600;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
  .header {
    padding: var(--space-3) var(--space-4);
  }

  .main {
    padding: var(--space-5) var(--space-4) var(--space-8);
  }

  .page-title {
    font-size: 1.75rem;
  }

  .nav {
    display: none;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}

/* ==================== CHART CONTAINER ==================== */
.chart-container {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
  border: 1px solid var(--slate-100);
  margin-bottom: var(--space-6);
}

.chart-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--navy-900);
  margin-bottom: var(--space-4);
}

/* ==================== LINKS ==================== */
a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* Hash/Address display */
.hash-link {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.8125rem;
  color: var(--accent);
}

.hash-link:hover {
  text-decoration: underline;
}