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

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

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 40px 20px;
}

h1 {
    text-align: center;
    margin-bottom: 40px;
    color: #1a1a2e;
}

.form-container {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    margin-bottom: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #444;
}

.form-group select,
.form-group input[type="date"] {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.2s;
}

.form-group select:focus,
.form-group input[type="date"]:focus {
    outline: none;
    border-color: #4a90d9;
}

.btn-primary {
    width: 100%;
    padding: 14px 24px;
    background-color: #4a90d9;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
}

.btn-primary:hover {
    background-color: #3a7bc8;
}

.btn-primary:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

.hidden {
    display: none !important;
}

#progress-container {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    margin-bottom: 30px;
    text-align: center;
}

.progress-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #4a90d9;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

#message-container {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    margin-bottom: 30px;
}

#message-box {
    padding: 15px 20px;
    border-radius: 8px;
    text-align: center;
    font-weight: 500;
}

#message-box.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

#message-box.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

#message-box.info {
    background-color: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}