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

:root {
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --primary-glow: rgba(99, 102, 241, 0.5);
  
  --bg-main: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-input: rgba(15, 23, 42, 0.6);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: rgba(255, 255, 255, 0.1);
  
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  --font-family: 'Outfit', system-ui, -apple-system, sans-serif;
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(16, 185, 129, 0.1) 0px, transparent 50%);
  background-attachment: fixed;
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
}

a {
  color: #a78bfa;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.2s ease;
}

a:hover {
  color: #c084fc;
  text-shadow: 0 0 8px rgba(192, 132, 252, 0.4);
}

/* Layout */
.app-container {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  width: 260px;
  background-color: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-right: 1px solid var(--border-color);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  z-index: 10;
}

.sidebar h2 { 
  margin-bottom: 2.5rem; 
  font-size: 1.5rem; 
  font-weight: 700; 
  background: linear-gradient(to right, #818cf8, #c084fc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-item {
  padding: 0.875rem 1.25rem;
  margin-bottom: 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  transform: translateX(4px);
}

.nav-item.active {
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: white;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.main-content {
  flex: 1;
  padding: 2.5rem;
  overflow-y: auto;
}

/* UI Elements */
.card {
  background-color: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: 0 4px 24px -1px rgba(0,0,0,0.2);
  margin-bottom: 1.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.3);
}

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

.card-header h2 {
  font-weight: 600;
  font-size: 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:active {
  transform: scale(0.95);
}

.btn-primary { 
  background: linear-gradient(135deg, var(--primary), #8b5cf6);
  color: white; 
  box-shadow: 0 4px 12px var(--primary-glow);
}
.btn-primary:hover { 
  box-shadow: 0 6px 16px var(--primary-glow);
  filter: brightness(1.1);
}

.btn-success { background-color: var(--success); color: white; }
.btn-danger { background-color: rgba(239, 68, 68, 0.2); color: #fca5a5; border: 1px solid rgba(239, 68, 68, 0.3); }
.btn-danger:hover { background-color: var(--danger); color: white; }

table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

th, td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

th {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

tr {
  transition: background-color 0.2s;
}

tbody tr:hover {
  background-color: rgba(255, 255, 255, 0.02);
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}
.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
}
.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--bg-input);
  color: var(--text-main);
  font-family: inherit;
  transition: all 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0; left: 0; width: 100%; height: 100%;
  background: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(8px);
  justify-content: center;
  align-items: center;
  z-index: 100;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.modal.active { 
  display: flex; 
  opacity: 1;
  animation: modalFadeIn 0.3s ease forwards;
}

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

.modal-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 2.5rem;
  border-radius: var(--radius-md);
  width: 100%;
  max-width: 500px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  transform: translateY(20px);
  animation: modalSlideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

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

.badge {
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.025em;
}
.badge-active { background-color: rgba(16, 185, 129, 0.15); color: #34d399; border: 1px solid rgba(52, 211, 153, 0.3); }
.badge-pending { background-color: rgba(245, 158, 11, 0.15); color: #fbbf24; border: 1px solid rgba(251, 191, 36, 0.3); }

.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 1rem;
}

.hidden { display: none !important; }

/* Dashboard specific stats */
.card h3 {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

#paymentFormSection {
  background: rgba(15, 23, 42, 0.4);
  padding: 1.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}