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

:root {
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --bg-dark: #0f172a;
  --bg-card: #1e293b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #f43f5e;
  --success: #10b981;
  --border: rgba(255, 255, 255, 0.08);
  --sidebar-width: 280px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Inter', sans-serif;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
}

/* Sidebar Styling */
.sidebar {
  width: var(--sidebar-width);
  background: #111827;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 2.5rem 1.5rem;
  position: fixed;
  height: 100vh;
  z-index: 100;
}

.nav-logo {
  font-family: 'Outfit', sans-serif;
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 3rem;
  padding-left: 0.5rem;
  background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-links {
  list-style: none;
  flex: 1;
}

.nav-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1rem;
  margin-bottom: 0.5rem;
  border-radius: 12px;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 500;
  border: none;
  background: transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: left;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
}

.nav-item.active {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

/* Main Layout */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 3rem 4rem;
  max-width: 1400px;
}

header {
  margin-bottom: 3.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

h1 {
  font-family: 'Outfit', sans-serif;
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

/* Sections */
.view-section {
  display: none;
  animation: fadeIn 0.3s ease-out;
}

.view-section.active {
  display: block;
}

/* Analytics Cards */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.stat-card {
  background: var(--bg-card);
  padding: 2.5rem;
  border-radius: 24px;
  border: 1px solid var(--border);
  transition: transform 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-5px);
}

.stat-label {
  font-size: 0.85rem;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  font-weight: 600;
  margin-bottom: 1rem;
}

.stat-value {
  font-family: 'Outfit', sans-serif;
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
}

/* Table Design */
.table-container {
  background: var(--bg-card);
  border-radius: 24px;
  border: 1px solid var(--border);
  overflow: hidden;
}

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

.data-table th {
  background: rgba(0, 0, 0, 0.1);
  padding: 1.25rem 1.5rem;
  text-align: left;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.data-table td {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.95rem;
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.user-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  background: #334155;
  border: 2px solid var(--border);
}

/* Event Grid */
.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 2.5rem;
}

.event-card {
  background: var(--bg-card);
  border-radius: 28px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.event-card:hover {
  transform: translateY(-10px);
  border-color: var(--primary);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

.event-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.event-info {
  padding: 2rem;
}

.btn-primary {
  background: var(--primary);
  color: white;
  padding: 0.85rem 1.75rem;
  border-radius: 14px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: scale(1.02);
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: blur(10px);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease-out;
}

.event-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}

.btn-action {
  flex: 1;
  padding: 0.6rem;
  border-radius: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-action:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
}

.btn-action.delete:hover {
  background: rgba(244, 63, 94, 0.1);
  color: var(--accent);
  border-color: rgba(244, 63, 94, 0.2);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Premium Upload Dropzone */
.upload-dropzone {
  border: 2px dashed rgba(99, 102, 241, 0.25);
  border-radius: 16px;
  padding: 2rem;
  text-align: center;
  background: rgba(15, 23, 42, 0.4);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 160px;
}

.upload-dropzone:hover, .upload-dropzone.dragover {
  border-color: var(--primary);
  background: rgba(99, 102, 241, 0.05);
  box-shadow: 0 0 20px rgba(99, 102, 241, 0.1);
}

.upload-dropzone.dragover .upload-icon {
  transform: translateY(-8px) scale(1.1);
}

.upload-icon {
  font-size: 2.25rem;
  margin-bottom: 0.75rem;
  display: inline-block;
  transition: transform 0.2s ease;
}

.upload-text {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.upload-highlight {
  color: var(--primary);
  text-decoration: underline;
  font-weight: 600;
}

.upload-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Upload Preview */
.upload-preview {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-dark);
}

.upload-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.btn-remove-preview {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: rgba(244, 63, 94, 0.9);
  color: white;
  border: none;
  padding: 0.5rem 0.85rem;
  border-radius: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  backdrop-filter: blur(4px);
  box-shadow: 0 4px 12px rgba(244, 63, 94, 0.3);
}

.btn-remove-preview:hover {
  background: #f43f5e;
  transform: translateY(-1px);
}

/* Custom Select Dropdown Styling */
select#timezone {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.25rem;
  padding-right: 2.5rem !important;
}

select#timezone:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

select#timezone option {
  background: #0f172a;
  color: white;
  padding: 0.75rem;
}

/* Custom sleek scrollbar for modal content */
.modal-content::-webkit-scrollbar {
  width: 6px;
}

.modal-content::-webkit-scrollbar-track {
  background: transparent;
}

.modal-content::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 99px;
}

.modal-content::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}