:root {
  --bg: #0f1115;
  --card-bg: #1a1d24;
  --primary: #6366f1;
  --primary-hover: #4f46e5;
  --text: #f3f4f6;
  --text-muted: #9ca3af;
  --danger: #ef4444;
  --border: #2d3139;
}

body, html {
  margin: 0;
  padding: 0;
  font-family: 'Inter', 'Segoe UI', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 60px 20px;
}

.header {
  text-align: center;
  margin-bottom: 60px;
}

.header h1 {
  font-size: 2.8rem;
  font-weight: 600;
  margin-bottom: 15px;
  background: linear-gradient(135deg, #a855f7, #6366f1);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header p {
  color: var(--text-muted);
  font-size: 1.1rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 24px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 500;
  margin-bottom: 8px;
}

.card-subtitle {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.card-icon {
  width: 48px;
  height: 48px;
  background: rgba(99, 102, 241, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 20px;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 100;
}

.modal-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 32px;
  width: 100%;
  max-width: 420px;
  transform: scale(0.95);
  transition: transform 0.2s ease;
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal h3 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 1.5rem;
}

.modal p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.modal input {
  width: 100%;
  box-sizing: border-box;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 14px;
  border-radius: 8px;
  font-size: 1.1rem;
  outline: none;
  transition: border-color 0.2s;
  letter-spacing: 2px;
}

.modal input:focus {
  border-color: var(--primary);
}

.error-msg {
  color: var(--danger);
  font-size: 0.9rem;
  margin-top: 10px;
  display: none;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 28px;
}

button {
  padding: 12px 24px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

.btn-cancel {
  background: transparent;
  color: var(--text-muted);
}

.btn-cancel:hover {
  background: rgba(255,255,255,0.05);
  color: var(--text);
}

.btn-confirm {
  background: var(--primary);
  color: white;
}

.btn-confirm:hover {
  background: var(--primary-hover);
}