/* Custom Curated Theme Elements & Colors */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700&display=swap');

:root {
  --bg-gradient: linear-gradient(135deg, #0d0e15 0%, #151829 100%);
  --panel-bg: rgba(25, 28, 48, 0.45);
  --panel-border: rgba(255, 255, 255, 0.08);
  
  --primary-accent: #00e5a3;
  --primary-hover: #00b37e;
  --secondary-accent: #8b5cf6;
  
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-bright: #ffffff;
  
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
}

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

body {
  font-family: 'Outfit', sans-serif;
  background: var(--bg-gradient);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Glassmorphic Panel Utility */
.glass-panel {
  background: var(--panel-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--panel-border);
  border-radius: 16px;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  padding: 24px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.glass-panel:hover {
  box-shadow: 0 12px 40px 0 rgba(0, 229, 163, 0.08);
}

h1, h2, h3 {
  font-weight: 700;
  color: var(--text-bright);
}

a {
  color: var(--primary-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--primary-hover);
}

/* Form controls */
input, select, textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text-main);
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s, background-color 0.2s;
}

select option {
  background-color: #151829;
  color: var(--text-main);
}

input:focus, select:focus, textarea:focus {
  border-color: var(--primary-accent);
  background: rgba(255, 255, 255, 0.08);
}

button {
  background: var(--primary-accent);
  color: #0c0e17;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  padding: 12px 24px;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
}

button:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

button:active {
  transform: translateY(0);
}

button.secondary {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
}

button.secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

/* Nav Header */
header {
  border-bottom: 1px solid var(--panel-border);
  padding: 16px 40px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(13, 14, 21, 0.8);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--primary-accent);
}

/* Navigation items */
nav a {
  margin-left: 24px;
  font-weight: 500;
  color: var(--text-muted);
}

nav a.active, nav a:hover {
  color: var(--primary-accent);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 16px;
}

th, td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

th {
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 1px;
}

tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Status Badges */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 600;
}

.badge.success {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

.badge.danger {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
}

.badge.warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--warning);
}

/* Modals Overlay Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 11, 18, 0.8);
  backdrop-filter: blur(8px);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 1000;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal-overlay.active {
  display: flex;
  opacity: 1;
}

.modal-box {
  width: 100%;
  max-width: 500px;
  animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 20px;
  cursor: pointer;
  padding: 4px;
}

.close-btn:hover {
  color: var(--text-bright);
}

/* Sessions Grid & QR Cards */
.session-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px;
}

.qr-container {
  width: 200px;
  height: 200px;
  background: white;
  border-radius: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 16px 0;
  overflow: hidden;
  border: 4px solid var(--panel-border);
}

.qr-container img {
  width: 100%;
  height: 100%;
}