/* Viktor Ledger - Blockchain Explorer - Professional Dark Theme */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  --bg-primary: #0a0a0a;
  --bg-secondary: #111111;
  --bg-card: #1a1a1a;
  --bg-hover: #252525;
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --accent: #6366f1;
  --accent-hover: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --border: #27272a;
  --border-light: #3f3f46;
  --success: #22c55e;
  --warning: #eab308;
  --error: #ef4444;
  --font-mono: 'SF Mono', 'Fira Code', Consolas, monospace;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* Navigation */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 1.5rem;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s;
}

.nav-links a:hover { color: var(--text-primary); }

.auth-section {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.user-info {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--accent);
}

.user-name {
  font-size: 0.9rem;
  color: var(--text-primary);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  gap: 0.5rem;
}

.btn-primary {
  background: var(--accent);
  color: white;
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
}

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

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border-light);
}

.btn-small {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

/* Main Content */
.main-content {
  padding-top: 5rem;
  min-height: 100vh;
}

.view { display: block; }
.view.hidden { display: none; }

/* Hero Section */
.hero {
  padding: 3.75rem 1.5rem 2.5rem;
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.hero-content {
  max-width: 700px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  padding: 0.375rem 0.875rem;
  background: var(--accent-glow);
  border: 1px solid var(--accent);
  border-radius: 1.25rem;
  font-size: 0.85rem;
  color: var(--accent-hover);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.gradient-text {
  background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

/* Search */
.search-container {
  display: flex;
  max-width: 600px;
  margin: 0 auto 2.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  overflow: hidden;
  transition: border-color 0.2s;
}

.search-container:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.search-input {
  flex: 1;
  padding: 1rem 1.25rem;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-mono);
}

.search-input::placeholder { color: var(--text-muted); }
.search-input:focus { outline: none; }

.search-btn {
  padding: 1rem 1.25rem;
  background: var(--accent);
  border: none;
  cursor: pointer;
  transition: background 0.2s;
}

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

.search-btn svg {
  width: 20px;
  height: 20px;
  color: white;
}

/* Stats */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3.75rem;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Recent Data Section */
.recent-data {
  padding: 2.5rem 1.5rem 5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.data-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.data-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  overflow: hidden;
}

.data-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.data-header h2 {
  font-size: 1.1rem;
  font-weight: 600;
}

.view-all {
  font-size: 0.85rem;
  color: var(--accent-hover);
  text-decoration: none;
}

.view-all:hover { text-decoration: underline; }

.data-list {
  max-height: 400px;
  overflow-y: auto;
}

/* Block/Tx Items */
.block-item, .tx-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  transition: background 0.2s;
  cursor: pointer;
}

.block-item:hover, .tx-item:hover { background: var(--bg-hover); }
.block-item:last-child, .tx-item:last-child { border-bottom: none; }

.block-info, .tx-info {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.block-icon-small, .tx-icon-small {
  width: 40px;
  height: 40px;
  background: var(--accent-glow);
  border-radius: 0.625rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.block-icon-small svg, .tx-icon-small svg {
  width: 20px;
  height: 20px;
  color: var(--accent-hover);
}

.tx-icon-small {
  background: rgba(34, 197, 94, 0.2);
}

.tx-icon-small svg { color: var(--success); }

.block-details, .tx-details {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.block-height, .tx-hash-short {
  font-weight: 600;
  color: var(--text-primary);
}

.tx-hash-short {
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.block-time, .tx-addresses {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.tx-addresses { font-family: var(--font-mono); }

.block-meta, .tx-meta { text-align: right; }

.block-txs, .tx-amount-small {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.tx-amount-small {
  font-weight: 600;
  color: var(--success);
}

.block-hash-short {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Detail Page */
.detail-page {
  max-width: 900px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem 5rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  transition: color 0.2s;
}

.back-link:hover { color: var(--text-primary); }

.back-link svg {
  width: 18px;
  height: 18px;
}

.detail-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.detail-icon {
  width: 64px;
  height: 64px;
  background: var(--accent-glow);
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.detail-icon svg {
  width: 32px;
  height: 32px;
  color: var(--accent-hover);
}

.tx-icon { background: rgba(34, 197, 94, 0.2); }
.tx-icon svg { color: var(--success); }

.detail-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.detail-title {
  font-size: 1.8rem;
  font-weight: 700;
}

.detail-title.hash {
  font-family: var(--font-mono);
  font-size: 1rem;
  word-break: break-all;
}

.detail-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.detail-row:last-child { border-bottom: none; }

.detail-key {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.detail-value {
  font-size: 0.95rem;
  color: var(--text-primary);
  text-align: right;
}

.detail-value.hash {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  word-break: break-all;
  max-width: 60%;
}

.detail-value.amount {
  font-weight: 600;
  color: var(--success);
  font-size: 1.1rem;
}

.hash-link {
  color: var(--accent-hover);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

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

.status-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 1.25rem;
  font-size: 0.8rem;
  font-weight: 500;
}

.status-badge.success {
  background: rgba(34, 197, 94, 0.2);
  color: var(--success);
}

.status-badge.pending {
  background: rgba(234, 179, 8, 0.2);
  color: var(--warning);
}

.status-badge.failed {
  background: rgba(239, 68, 68, 0.2);
  color: var(--error);
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 1.5rem;
}

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

.modal {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  padding: 2rem;
  width: 100%;
  max-width: 400px;
  position: relative;
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
  transition: color 0.2s;
}

.modal-close:hover { color: var(--text-primary); }

.modal h2 {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.modal-subtitle {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.google-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%;
  padding: 0.875rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s;
}

.google-btn:hover {
  background: var(--bg-hover);
  border-color: var(--border-light);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-hover);
  border: 1px solid var(--border);
  padding: 0.875rem 1.5rem;
  border-radius: 0.5rem;
  color: var(--text-primary);
  font-size: 0.95rem;
  opacity: 0;
  transition: all 0.3s;
  z-index: 300;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

.toast.success {
  border-color: var(--success);
  background: rgba(34, 197, 94, 0.1);
}

.toast.error {
  border-color: var(--error);
  background: rgba(239, 68, 68, 0.1);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links a:not(.auth-section *) { display: none; }
  .hero-stats { gap: 2rem; }
  .stat-value { font-size: 1.2rem; }
  .data-grid { grid-template-columns: 1fr; }

  .block-item, .tx-item {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .block-meta, .tx-meta { text-align: left; }

  .detail-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .detail-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .detail-value { text-align: left; }
  .detail-value.hash { max-width: 100%; }
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track { background: var(--bg-primary); }

::-webkit-scrollbar-thumb {
  background: var(--bg-hover);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }