:root {
  --primary-color: #5a7ea8;
  --secondary-color: #5a7ea8;
  --dark-bg: #0f1419;
  --card-bg: #1a1f26;
  --border-color: #2d3139;
  --text-primary: #e8eaed;
  --text-secondary: #b0b4b9;
  --accent-color: #8fa3c2;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  background-color: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.6;
}

/* ========== LOGIN PAGE ========== */
.login-container {
  background: var(--card-bg);
  border-radius: 10px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
  max-width: 400px;
  width: 100%;
  padding: 40px;
  border: 1px solid var(--border-color);
}

.login-title {
  text-align: center;
  margin-bottom: 30px;
  color: var(--text-primary);
}

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

.form-label {
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
  display: block;
}

.form-control {
  border-radius: 5px;
  border: 1px solid var(--border-color);
  padding: 10px 15px;
  font-size: 1rem;
  background-color: #1e293b;
  color: var(--text-primary);
  width: 100%;
  transition: border-color 0.3s;
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-control::placeholder {
  color: var(--text-secondary);
}

.btn-login {
  width: 100%;
  padding: 12px;
  font-weight: 600;
  border-radius: 5px;
  background: #5a7ea8;
  border: none;
  color: white;
  cursor: pointer;
  font-size: 1rem;
  transition: opacity 0.3s;
}

.btn-login:hover {
  opacity: 0.9;
}

/* ========== DASHBOARD ========== */
.dashboard {
  min-height: 100vh;
  padding: 20px;
}

.navbar {
  background: var(--card-bg);
  border-bottom: 1px solid var(--border-color);
  padding: 15px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-radius: 5px;
  margin-bottom: 30px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: #8fa3c2;
}

.navbar-nav {
  display: flex;
  gap: 15px;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 15px;
  border-radius: 5px;
  transition: all 0.3s;
}

.nav-link:hover {
  background-color: var(--border-color);
  color: var(--text-primary);
}

.nav-link.active {
  color: var(--accent-color);
  background-color: rgba(56, 189, 248, 0.1);
}

.logout-btn {
  background: #6b7882;
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 5px;
  cursor: pointer;
  font-weight: 600;
  transition: opacity 0.3s;
}

.logout-btn:hover {
  opacity: 0.9;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
}

.dashboard-header {
  margin-bottom: 40px;
}

.dashboard-title {
  font-size: 2.5rem;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.dashboard-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 25px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: all 0.3s;
}

.card:hover {
  border-color: var(--primary-color);
  box-shadow: 0 8px 20px rgba(102, 126, 234, 0.2);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: start;
  margin-bottom: 15px;
}

.card-icon {
  font-size: 2rem;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.card-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-color);
  margin-bottom: 10px;
}

.card-text {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ========== ALERTS ========== */
.alert {
  padding: 15px 20px;
  border-radius: 5px;
  margin-bottom: 20px;
  border-left: 4px solid;
  display: none;
}

.alert-success {
  background-color: rgba(107, 142, 110, 0.15);
  border-left-color: #6b8e6e;
  color: #a8c5a8;
}

.alert-danger {
  background-color: rgba(139, 107, 107, 0.15);
  border-left-color: #8b6b6b;
  color: #c5a8a8;
}

.alert-info {
  background-color: rgba(107, 130, 159, 0.15);
  border-left-color: #6b829f;
  color: #a8b8c8;
}

/* ========== BUTTONS ========== */
.btn {
  padding: 10px 20px;
  border-radius: 5px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.3s;
}

.btn-primary {
  background: #5a7ea8;
  color: white;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-2px);
}

.btn-secondary {
  background-color: var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  background-color: #64748b;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .navbar {
    flex-direction: column;
    gap: 15px;
  }

  .dashboard-title {
    font-size: 2rem;
  }

  .dashboard-grid {
    grid-template-columns: 1fr;
  }

  .login-container {
    max-width: 100%;
  }
}