:root {
  --primary-black: #1a1a1a;
  --secondary-gray: #333333;
  --light-gray: #f8f8f8;
  --border-gray: #e0e0e0;
  --white: #ffffff;
  --success-green: #28a745;
  --danger-red: #dc3545;
  --warning-orange: #ffc107;
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--light-gray);
  color: var(--primary-black);
  line-height: 1.6;
}

/* Global Styles */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Cards */
.card {
  background: white;
  border: 2px solid var(--border-gray);
  border-radius: 12px;
  padding: 25px;
  transition: all 0.3s ease;
  box-shadow: 0 5px 20px rgba(0,0,0,0.08);
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Buttons */
.btn {
  padding: 12px 25px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary {
  background: var(--primary-black);
  color: white;
  border: none;
}

.btn-primary:hover {
  background: var(--secondary-gray);
  transform: translateY(-2px);
}

/* Status Indicators */
.status {
  display: inline-block;
  padding: 5px 10px;
  border-radius: 20px;
  font-size: 12px;
  color: white;
}

.status-available {
  background: var(--success-green);
}

.status-busy {
  background: var(--danger-red);
}

/* Avatar */
.avatar {
  position: relative;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--primary-black);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 15px;
}

/* Forms */
.form-group {
  margin-bottom: 20px;
}

.form-control {
  width: 100%;
  padding: 12px;
  border: 2px solid var(--border-gray);
  border-radius: 8px;
  font-size: 16px;
  transition: all 0.3s ease;
}

.form-control:focus {
  border-color: var(--primary-black);
  outline: none;
  box-shadow: 0 0 0 2px rgba(26, 26, 26, 0.2);
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 15px;
  }

  .card {
    padding: 20px;
  }

  .btn {
    padding: 10px 20px;
  }
}