/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
    min-height: 100vh;
}

/* Navigation */
.navbar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-brand a {
    color: white;
    text-decoration: none;
    font-size: 1.5rem;
    font-weight: bold;
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-user {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
}

/* Buttons */
.btn {
    padding: 0.5rem 1.25rem;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.btn-logout {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.btn-logout:hover {
    background: rgba(255, 255, 255, 0.3);
}

.btn-block {
    width: 100%;
    padding: 0.875rem;
    font-size: 1rem;
}

/* Login Page */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    font-size: 2.5rem;
    color: #667eea;
    margin-bottom: 0.5rem;
    letter-spacing: 2px;
}

.login-header p {
    color: #666;
    font-size: 0.95rem;
}

/* Form Styles */
.login-form {
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #555;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e1e8ed;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: #667eea;
}

.form-control::placeholder {
    color: #aab7c4;
}

/* Messages */
.messages {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 1000;
    max-width: 400px;
}

.message {
    padding: 1rem 1.5rem;
    border-radius: 6px;
    margin-bottom: 0.75rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.message.error {
    background: #fee;
    color: #c33;
    border-left: 4px solid #c33;
}

.message.success {
    background: #efe;
    color: #3c3;
    border-left: 4px solid #3c3;
}

.message.info {
    background: #eef;
    color: #33c;
    border-left: 4px solid #33c;
}

.message.warning {
    background: #ffe;
    color: #c93;
    border-left: 4px solid #c93;
}

/* Login Footer */
.login-footer {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid #e1e8ed;
}

.login-footer p {
    color: #999;
    font-size: 0.8rem;
}

/* Dashboard */
.dashboard-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.dashboard-container h1 {
    color: #333;
    margin-bottom: 0.5rem;
}

.subtitle {
    color: #666;
    margin-bottom: 2rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}

.card {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.card h3 {
    color: #333;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.card p {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: #e1e8ed;
    color: #666;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
    .navbar {
        padding: 0.75rem 1rem;
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .nav-brand {
        font-size: 1.1rem !important;
    }
    
    .nav-menu {
        gap: 0.5rem;
        flex-wrap: wrap;
        width: 100%;
        justify-content: flex-start;
    }
    
    .nav-menu .btn {
        padding: 0.4rem 0.75rem;
        font-size: 0.8rem;
    }
    
    .nav-user {
        display: none;
    }
    
    .login-box {
        padding: 2rem;
    }
    
    .dashboard-container {
        padding: 0 1rem;
    }
    
    main {
        padding: 0.5rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .dashboard-grid {
        gap: 1rem;
    }
}

/* Extra small screens */
@media (max-width: 480px) {
    .navbar {
        padding: 0.5rem 0.75rem;
    }
    
    .nav-brand {
        font-size: 1rem !important;
    }
    
    .nav-menu {
        gap: 0.4rem;
    }
    
    .nav-menu .btn {
        padding: 0.35rem 0.6rem;
        font-size: 0.75rem;
        border-radius: 4px;
    }
    
    .nav-menu .btn span {
        display: none;
    }
}