:root {
  --bg-dark: #090d16;
  --panel-bg: #131b2e;
  --border-color: #1e293b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent-primary: #38bdf8;
  --accent-hover: #0284c7;
  --accent-light: rgba(56, 189, 248, 0.1);
  --danger: #f87171;
  --success: #34d399;
  --radius-lg: 16px;
  --radius-md: 10px;
  --font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-main);
  min-height: 100vh;
  padding: 1.5rem;
}

.app-container {
  max-width: 1280px;
  margin: 0 auto;
}

/* Header Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 1.75rem;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: 2rem;
  box-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-icon {
  background: linear-gradient(135deg, #38bdf8, #818cf8);
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: #0f172a;
}

.brand h1 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.domain-tag {
  font-size: 0.8rem;
  color: var(--accent-primary);
  font-weight: 600;
}

.nav-actions {
  display: flex;
  gap: 0.75rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--accent-primary);
  color: #0f172a;
}

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Toolbar */
.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  gap: 1rem;
}

.search-box {
  position: relative;
  flex: 1;
  max-width: 450px;
}

.search-box svg {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.search-box input {
  width: 100%;
  padding: 0.75rem 1rem 0.75rem 2.75rem;
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-family: inherit;
  font-size: 0.9rem;
}

.search-box input:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.stats-badge {
  font-size: 0.85rem;
  color: var(--text-muted);
  background: var(--panel-bg);
  padding: 0.5rem 1rem;
  border-radius: 20px;
  border: 1px solid var(--border-color);
}

/* Grid Layout */
.grid-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.card:hover {
  border-color: rgba(56, 189, 248, 0.4);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.pdf-icon {
  background: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.card-title-box h3 {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 0.25rem;
}

.card-title-box .slug-tag {
  font-size: 0.75rem;
  color: var(--accent-primary);
  background: var(--accent-light);
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
}

/* QR Code Section inside Card */
.qr-preview-box {
  background: #ffffff;
  padding: 1rem;
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.qr-preview-box img {
  width: 160px;
  height: 160px;
  object-fit: contain;
}

.qr-preview-box p {
  font-size: 0.75rem;
  color: #475569;
  font-weight: 600;
}

/* Card Actions */
.card-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: auto;
}

.card-actions .btn {
  flex: 1;
  justify-content: center;
  font-size: 0.8rem;
  padding: 0.5rem;
}

/* Modal Overlay */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  display: none;
  place-items: center;
  z-index: 100;
}

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

.modal-card {
  background: var(--panel-bg);
  border: 1px solid var(--border-color);
  width: 90%;
  max-width: 500px;
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

.dropzone {
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.5rem 1rem;
  text-align: center;
  cursor: pointer;
  position: relative;
  transition: border-color 0.2s ease;
}

.dropzone:hover, .dropzone.dragover {
  border-color: var(--accent-primary);
  background: var(--accent-light);
}

.dropzone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
}

.dropzone svg {
  color: var(--accent-primary);
  margin-bottom: 0.75rem;
}

.dropzone p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.dropzone .highlight {
  color: var(--accent-primary);
  font-weight: 600;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #1e293b;
  color: #fff;
  padding: 0.85rem 1.5rem;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--accent-primary);
  box-shadow: 0 10px 25px rgba(0,0,0,0.5);
  font-size: 0.9rem;
  display: none;
  z-index: 200;
}

.toast.show {
  display: block;
}