/* ============================================================
   CertifyNFT — Premium Dark Theme Stylesheet
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

/* --- CSS Variables --- */
:root {
  --bg-primary: #000000;
  --bg-secondary: #0a0a0f;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.06);
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-hover: rgba(255, 255, 255, 0.15);

  --accent-purple: #a855f7;
  --accent-purple-dim: rgba(168, 85, 247, 0.15);
  --accent-purple-glow: rgba(168, 85, 247, 0.4);
  --accent-cyan: #06b6d4;
  --accent-cyan-dim: rgba(6, 182, 212, 0.15);
  --accent-cyan-glow: rgba(6, 182, 212, 0.4);
  --accent-pink: #ec4899;

  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.55);
  --text-muted: rgba(255, 255, 255, 0.3);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-glow-purple: 0 0 40px rgba(168, 85, 247, 0.2);
  --shadow-glow-cyan: 0 0 40px rgba(6, 182, 212, 0.2);

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* --- Animated Background --- */
.bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.bg-gradient {
  position: absolute;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse 80% 50% at 20% 40%, rgba(168, 85, 247, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse 60% 40% at 80% 20%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse 50% 30% at 50% 80%, rgba(168, 85, 247, 0.06) 0%, transparent 50%),
    linear-gradient(180deg, #000000 0%, #0a0a0f 50%, #050508 100%);
  animation: bgPulse 12s ease-in-out infinite alternate;
}

@keyframes bgPulse {
  0% { opacity: 1; }
  50% { opacity: 0.85; }
  100% { opacity: 1; }
}

/* Grid overlay */
.bg-grid {
  position: absolute;
  width: 100%;
  height: 100%;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* --- Layout --- */
.container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Navigation --- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 16px 0;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(0, 0, 0, 0.6);
  border-bottom: 1px solid var(--glass-border);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text-primary);
}

.nav-brand-icon {
  width: 36px;
  height: 36px;
}

.nav-brand-name {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.network-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-base);
}

.network-badge.connected {
  border-color: rgba(6, 182, 212, 0.3);
  color: var(--accent-cyan);
}

.network-badge.wrong-network {
  border-color: rgba(239, 68, 68, 0.4);
  color: #ef4444;
}

.network-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
}

.network-badge.connected .network-dot {
  background: var(--accent-cyan);
  box-shadow: 0 0 6px var(--accent-cyan);
}

.network-badge.wrong-network .network-dot {
  background: #ef4444;
  box-shadow: 0 0 6px #ef4444;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
  transition: left 0.5s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-purple), #7c3aed);
  color: white;
  box-shadow: 0 4px 20px var(--accent-purple-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px var(--accent-purple-glow);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--glass-border-hover);
  transform: translateY(-1px);
}

.btn-cyan {
  background: linear-gradient(135deg, var(--accent-cyan), #0891b2);
  color: white;
  box-shadow: 0 4px 20px var(--accent-cyan-glow);
}

.btn-cyan:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px var(--accent-cyan-glow);
}

.btn-danger {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.btn-danger:hover {
  background: rgba(239, 68, 68, 0.25);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 12px;
  border-radius: var(--radius-sm);
}

/* --- Hero Section --- */
.hero {
  padding: 80px 0 60px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background: var(--accent-purple-dim);
  border: 1px solid rgba(168, 85, 247, 0.2);
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-purple);
  margin-bottom: 24px;
  animation: fadeInDown 0.6s ease both;
}

.hero-title {
  font-size: clamp(40px, 7vw, 72px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  animation: fadeInUp 0.6s ease 0.1s both;
}

.hero-title-gradient {
  background: linear-gradient(135deg, #ffffff 0%, var(--accent-purple) 50%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(16px, 2.5vw, 20px);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 40px;
  animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.3s both;
}

/* --- Glass Card --- */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 32px;
  transition: var(--transition-base);
}

.glass-card:hover {
  border-color: var(--glass-border-hover);
}

.glass-card-static {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
}

/* --- Section --- */
.section {
  padding: 60px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-title {
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* --- Mint Form Card --- */
.mint-section {
  padding-bottom: 80px;
}

.mint-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}

@media (max-width: 768px) {
  .mint-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Upload Zone --- */
.upload-zone {
  position: relative;
  border: 2px dashed rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  padding: 40px 24px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition-base);
  background: rgba(255, 255, 255, 0.01);
  overflow: hidden;
}

.upload-zone::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-purple-dim), var(--accent-cyan-dim));
  opacity: 0;
  transition: var(--transition-base);
  border-radius: var(--radius-lg);
}

.upload-zone:hover,
.upload-zone.drag-over {
  border-color: var(--accent-purple);
  background: rgba(168, 85, 247, 0.05);
}

.upload-zone:hover::before,
.upload-zone.drag-over::before {
  opacity: 1;
}

.upload-zone-content {
  position: relative;
  z-index: 1;
}

.upload-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  opacity: 0.6;
  transition: var(--transition-base);
}

.upload-zone:hover .upload-icon {
  opacity: 1;
  transform: scale(1.1);
}

.upload-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.upload-subtitle {
  font-size: 13px;
  color: var(--text-secondary);
}

.upload-input {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  z-index: 2;
}

.upload-preview-container {
  position: relative;
}

.upload-preview {
  width: 100%;
  max-height: 260px;
  object-fit: contain;
  border-radius: var(--radius-md);
  display: none;
}

.upload-preview.visible {
  display: block;
}

.upload-remove-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 32px;
  height: 32px;
  background: rgba(0, 0, 0, 0.7);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
  transition: var(--transition-fast);
  z-index: 3;
}

.upload-remove-btn:hover {
  background: rgba(239, 68, 68, 0.6);
}

.upload-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

/* --- Form Fields --- */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 14px;
  color: var(--text-primary);
  transition: var(--transition-base);
  outline: none;
  backdrop-filter: blur(10px);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-muted);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--accent-purple);
  background: rgba(168, 85, 247, 0.05);
  box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='white' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 36px;
}

.form-select option {
  background: #1a1a2e;
  color: white;
}

.form-hint {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 6px;
}

.form-hint.warning {
  color: #f59e0b;
}

.form-hint.error {
  color: #ef4444;
}

/* --- Certificate Preview Card --- */
.preview-section {
  position: sticky;
  top: 100px;
}

.certificate-preview {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-base);
}

.certificate-preview:hover {
  border-color: rgba(168, 85, 247, 0.3);
  box-shadow: var(--shadow-glow-purple);
}

.preview-image-container {
  position: relative;
  aspect-ratio: 4/3;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.preview-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: none;
}

.preview-image.visible {
  display: block;
}

.preview-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
}

.preview-placeholder-icon {
  width: 48px;
  height: 48px;
  opacity: 0.3;
}

.preview-placeholder-text {
  font-size: 13px;
}

.preview-meta {
  padding: 20px;
}

.preview-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.preview-recipient {
  font-size: 14px;
  color: var(--accent-purple);
  font-weight: 500;
  margin-bottom: 4px;
}

.preview-issuer {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.preview-date {
  font-size: 11px;
  color: var(--text-muted);
}

.preview-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 8px;
  background: var(--accent-purple-dim);
  border-radius: var(--radius-full);
  font-size: 10px;
  font-weight: 600;
  color: var(--accent-purple);
  margin-top: 12px;
}

/* --- Mint Button Area --- */
.mint-action-area {
  margin-top: 24px;
}

.mint-total {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-secondary);
}

.mint-total-value {
  font-weight: 600;
  color: var(--accent-cyan);
}

/* --- Gallery --- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.gallery-item {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-base);
  animation: fadeInUp 0.5s ease both;
}

.gallery-item:hover {
  border-color: var(--glass-border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow-purple);
}

.gallery-item-image {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  background: rgba(0, 0, 0, 0.3);
}

.gallery-item-meta {
  padding: 16px;
}

.gallery-item-title {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.gallery-item-recipient {
  font-size: 12px;
  color: var(--accent-cyan);
  margin-bottom: 4px;
}

.gallery-item-date {
  font-size: 11px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.gallery-item-actions {
  display: flex;
  gap: 8px;
}

.gallery-empty {
  text-align: center;
  padding: 60px 24px;
  color: var(--text-secondary);
}

.gallery-empty-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  opacity: 0.3;
}

/* --- Modal --- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-base);
}

.modal-overlay.visible {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: #0f0f1a;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 40px;
  max-width: 480px;
  width: 100%;
  text-align: center;
  transform: scale(0.9) translateY(20px);
  transition: var(--transition-base);
}

.modal-overlay.visible .modal {
  transform: scale(1) translateY(0);
}

.modal-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
}

.modal-title {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 8px;
}

.modal-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.modal-detail {
  font-size: 13px;
  color: var(--text-muted);
  word-break: break-all;
  margin-bottom: 24px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Spinner --- */
.spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(168, 85, 247, 0.2);
  border-top-color: var(--accent-purple);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 0 auto 20px;
}

.spinner-cyan {
  border-color: rgba(6, 182, 212, 0.2);
  border-top-color: var(--accent-cyan);
}

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

/* --- Toast --- */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 20px;
  background: #1a1a2e;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  font-size: 14px;
  font-weight: 500;
  animation: slideInRight 0.3s ease both;
  max-width: 380px;
}

.toast.success {
  border-color: rgba(6, 182, 212, 0.3);
  color: var(--accent-cyan);
}

.toast.error {
  border-color: rgba(239, 68, 68, 0.3);
  color: #ef4444;
}

.toast.warning {
  border-color: rgba(245, 158, 11, 0.3);
  color: #f59e0b;
}

.toast-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

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

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--glass-border);
  padding: 40px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

.footer-brand p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 12px;
  max-width: 280px;
}

.footer-title {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-purple);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid var(--glass-border);
  font-size: 12px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

/* --- How It Works --- */
.how-it-works {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 48px;
  margin: 40px 0;
}

.how-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 32px;
}

@media (max-width: 768px) {
  .how-steps {
    grid-template-columns: 1fr 1fr;
  }
  .how-it-works {
    padding: 32px 24px;
  }
}

@media (max-width: 480px) {
  .how-steps {
    grid-template-columns: 1fr;
  }
}

.how-step {
  text-align: center;
}

.how-step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 800;
  margin: 0 auto 16px;
  color: white;
}

.how-step-title {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
}

.how-step-desc {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* --- Links --- */
a {
  color: var(--accent-purple);
  text-decoration: none;
  transition: var(--transition-fast);
}

a:hover {
  color: var(--accent-cyan);
}

/* --- Wallet Info --- */
.wallet-info {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
}

.wallet-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: 700;
  color: white;
}

/* --- Loading overlay --- */
.loading-overlay {
  position: fixed;
  inset: 0;
  z-index: 500;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
}

.loading-overlay.visible {
  display: flex;
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-in {
  animation: fadeIn 0.5s ease both;
}

.fade-in-up {
  animation: fadeInUp 0.5s ease both;
}

/* Stagger animations */
.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }

/* --- Hidden utility --- */
.hidden {
  display: none !important;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* --- Responsive --- */
@media (max-width: 640px) {
  .container {
    padding: 0 16px;
  }

  .hero {
    padding: 60px 0 40px;
  }

  .glass-card {
    padding: 24px 20px;
  }

  .navbar {
    padding: 12px 0;
  }

  .modal {
    padding: 28px 24px;
  }

  .section {
    padding: 40px 0;
  }
}

/* --- Status indicator for wallet --- */
.tx-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--text-secondary);
  margin-top: 8px;
}

.tx-hash {
  font-family: 'Courier New', monospace;
  font-size: 11px;
  color: var(--accent-cyan);
  word-break: break-all;
}

/* --- Separator --- */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
  margin: 24px 0;
}