:root {
    --primary-color: #1a73e8;
    --secondary-color: #5f6368;
    --background-color: #ffffff;
    --text-color: #202124;
    --error-color: #d93025;
    --success-color: #1e8e3e;
    --border-color: #dadce0;
    --hover-color: #f8f9fa;
}

[data-theme="dark"] {
    --primary-color: #8ab4f8;
    --secondary-color: #9aa0a6;
    --background-color: #202124;
    --text-color: #e8eaed;
    --error-color: #f28b82;
    --success-color: #81c995;
    --border-color: #5f6368;
    --hover-color: #303134;
}

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

body {
    font-family: 'Roboto', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

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

.navbar {
    background-color: var(--background-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 60px;
    display: flex;
    align-items: center;
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 0 16px;
    width: 100%;
}

.logo {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo i {
    font-size: 1.2rem;
}

.nav-links {
    display: flex;
    gap: 12px;
    align-items: center;
}

.nav-link {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

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

.btn {
    padding: 8px 16px;
    border-radius: 4px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    border: none;
    outline: none;
}

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

.btn-primary:hover {
    background-color: var(--primary-color);
    opacity: 0.9;
    transform: translateY(-1px);
}

.card {
    background-color: var(--background-color);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 24px;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--background-color);
    color: var(--text-color);
    transition: border-color 0.2s;
}

.form-input:focus {
    border-color: var(--primary-color);
    outline: none;
}

.alert {
    padding: 12px 16px;
    border-radius: 4px;
    margin-bottom: 16px;
}

.alert-error {
    background-color: var(--error-color);
    color: white;
}

.alert-success {
    background-color: var(--success-color);
    color: white;
}

#map {
    height: 500px;
    width: 100%;
    border-radius: 8px;
    margin-bottom: 24px;
}

.vehicle-status {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 500;
}

.status-active {
    background-color: var(--success-color);
    color: white;
}

.status-inactive {
    background-color: var(--secondary-color);
    color: white;
}

.status-delayed {
    background-color: var(--error-color);
    color: white;
}

.page-header h1 i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
}

.btn i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

@media (max-width: 768px) {
    .navbar-content {
        flex-direction: row;
        height: 100%;
        padding: 0 12px;
    }

    .nav-links {
        gap: 8px;
    }

    .nav-link {
        text-align: center;
    }

    .container {
        padding: 0 16px;
        margin-top: 60px;
    }
    
    .page-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        flex-wrap: wrap;
        gap: 12px;
        margin-bottom: 16px;
        width: 100%;
    }
    
    .page-header h1 {
        margin: 0;
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: 1.3rem;
    }
    
    .btn {
        padding: 10px 12px;
        font-size: 1rem;
    }
    
    .nav-links .btn {
        padding: 8px 10px;
        font-size: 1.1rem;
    }
    
    .nav-links .btn i {
        font-size: 1.2rem;
    }
    
    .logo {
        font-size: 1.1rem;
    }
    
    .logo i {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 0;
        height: 55px;
    }
    
    .navbar-content {
        padding: 0 8px;
    }
    
    .container {
        margin-top: 45px !important;
        padding: 8px !important;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
        margin-bottom: 12px;
    }
    
    .page-header h1 {
        font-size: 1.2rem;
        margin-bottom: 8px;
        width: 100%;
    }
    
    .page-header h1 i {
        font-size: 1.1rem;
        width: 20px;
        height: 20px;
    }
    
    .page-header > div {
        width: 100%;
        display: flex;
        justify-content: flex-start;
    }
    
    .nav-brand span {
        display: none;
    }
    
    h1 {
        font-size: 1.3rem;
    }
    
    /* Increase button size for smaller mobile screens */
    .nav-links .btn {
        padding: 8px 10px;
        font-size: 1.2rem;
        margin: 0 2px;
    }
    
    .nav-links .btn i {
        font-size: 1.3rem;
    }
    
    .btn-text {
        display: none;
    }
    
    .card {
        padding: 16px;
        margin-bottom: 16px;
    }
    
    /* Adjust floating button size */
    .floating-center-btn {
        width: 55px;
        height: 55px;
        font-size: 1.3rem;
    }
}