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

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f5f5f5;
  color: #333;
}

/* Navbar */
.navbar {
  background-color: #2c3e50;
  color: white;
  padding: 1rem 0;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.nav-content {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-content h1 {
  font-size: 1.5rem;
  font-weight: 600;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Container */
.container {
  max-width: 1400px;
  margin: 2rem auto;
  padding: 0 2rem;
}

/* Login Page */
.login-container {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
  background: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.2);
  width: 100%;
  max-width: 400px;
}

.login-box h1 {
  text-align: center;
  color: #2c3e50;
  margin-bottom: 0.5rem;
}

.login-box h2 {
  text-align: center;
  color: #7f8c8d;
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-danger, .btn-small {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s;
}

.btn-primary {
  background-color: #3498db;
  color: white;
}

.btn-primary:hover {
  background-color: #2980b9;
}

.btn-secondary {
  background-color: #95a5a6;
  color: white;
}

.btn-secondary:hover {
  background-color: #7f8c8d;
}

.btn-danger {
  background-color: #e74c3c;
  color: white;
  font-size: 0.8rem;
  padding: 0.4rem 0.8rem;
}

.btn-danger:hover {
  background-color: #c0392b;
}

.btn-small {
  font-size: 0.75rem;
  padding: 0.3rem 0.6rem;
  background-color: #3498db;
  color: white;
}

.btn-small:hover {
  background-color: #2980b9;
}

/* Forms */
.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.3rem;
  font-weight: 500;
  color: #2c3e50;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.6rem;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 0.9rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #3498db;
}

.form-group small {
  display: block;
  margin-top: 0.3rem;
  color: #7f8c8d;
  font-size: 0.8rem;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

/* Error Message */
.error-message {
  background-color: #e74c3c;
  color: white;
  padding: 0.75rem;
  border-radius: 4px;
  margin-bottom: 1rem;
}

/* Dashboard */
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.month-nav {
  display: flex;
  gap: 0.5rem;
}

.calendar {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}

.calendar-day {
  background: white;
  border-radius: 8px;
  padding: 1rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  min-height: 150px;
}

.calendar-day.today {
  border: 2px solid #3498db;
  background-color: #ecf0f1;
}

.day-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid #ecf0f1;
}

.day-boats {
  font-size: 0.85rem;
}

.boat-item {
  padding: 0.5rem 0;
  border-bottom: 1px solid #ecf0f1;
}

.boat-item:last-child {
  border-bottom: none;
}

/* Day Page */
.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.add-boat-section {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  margin-bottom: 2rem;
}

.add-boat-section h3 {
  margin-bottom: 1rem;
  color: #2c3e50;
}

.boats-list h3 {
  margin-bottom: 1rem;
  color: #2c3e50;
}

.boat-card {
  background: white;
  padding: 1.5rem;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  margin-bottom: 1rem;
}

.boat-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid #ecf0f1;
}

.boat-card h4 {
  color: #2c3e50;
  font-size: 1.2rem;
}

.no-boats {
  text-align: center;
  color: #7f8c8d;
  padding: 2rem;
  background: white;
  border-radius: 8px;
}

.boat-form {
  margin-top: 1rem;
}