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

body {
    font-family: system-ui, -apple-system, 'Segoe UI', Arial, sans-serif;
    background: #f6f7f9;
    color: #333;
    line-height: 1.6;
}

header {
    background: #0d6efd;
    color: #fff;
    padding: 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    flex-wrap: wrap;
}

.logo {
    font-size: 1.5em;
    font-weight: bold;
    text-decoration: none;
    color: #fff;
}

.nav-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

nav a {
    color: #fff;
    text-decoration: none;
    padding: 8px 12px;
    border-radius: 6px;
    transition: background 0.2s;
}

nav a:hover {
    background: rgba(255,255,255,0.2);
}

main {
    padding: 20px 16px;
    min-height: calc(100vh - 200px);
}

footer {
    background: #333;
    color: #fff;
    text-align: center;
    padding: 20px;
    margin-top: 40px;
}

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

.card {
    background: #fff;
    border-radius: 12px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.btn {
    background: #0d6efd;
    color: #fff;
    border: 0;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 16px;
    text-decoration: none;
    display: inline-block;
    transition: background 0.2s;
}

.btn:hover {
    background: #0b5ed7;
}

.btn-secondary {
    background: #6c757d;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-success {
    background: #198754;
}

.btn-danger {
    background: #dc3545;
}

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

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
}

textarea {
    min-height: 120px;
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: #0d6efd;
    box-shadow: 0 0 0 3px rgba(13,110,253,0.1);
}

.alert {
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d1e7dd;
    color: #0f5132;
    border: 1px solid #badbcc;
}

.alert-error {
    background: #f8d7da;
    color: #842029;
    border: 1px solid #f5c2c7;
}

.alert-info {
    background: #cff4fc;
    color: #055160;
    border: 1px solid #b6effb;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.job-card {
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 16px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.job-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.job-title {
    font-size: 1.25em;
    font-weight: bold;
    margin-bottom: 8px;
    color: #0d6efd;
}

.job-meta {
    color: #666;
    font-size: 0.9em;
    margin-bottom: 12px;
}

.score {
    font-size: 32px;
    font-weight: bold;
    color: #0d6efd;
    text-align: center;
    margin: 20px 0;
}

.ai-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 12px;
}

.ai-btn {
    background: #6f42c1;
    color: #fff;
    border: 0;
    padding: 8px 16px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
}

.ai-btn:hover {
    background: #5a32a3;
}

.loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid #fff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@media (min-width: 768px) {
    main {
        padding: 30px 20px;
    }
    
    .container {
        padding: 0 20px;
    }
}

@media (max-width: 767px) {
    nav {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .nav-links {
        width: 100%;
        margin-top: 12px;
    }
    
    nav a {
        display: block;
        width: 100%;
    }
}