:root {
    --blue: #244A7B;
    --dark-green: #144504;
    --cream: #ebbc8d;
    --light-cream: #f5e6d3;
    --lighter-blue: #3d6a9e;
    --light-bg: #fdfaf6;
    --shadow: rgba(20, 69, 4, 0.1);
    --shadow-strong: rgba(36, 74, 123, 0.2);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, var(--light-cream) 0%, var(--light-bg) 100%);
    min-height: 100vh;
    color: var(--blue);
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    padding: 2rem 0;
}

header h1 {
    font-size: 2.5rem;
    color: var(--blue);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.tagline {
    color: var(--lighter-blue);
    font-size: 1.1rem;
    font-weight: 400;
}

.card {
    background: white;
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 8px 24px var(--shadow);
    margin-bottom: 2rem;
    border: 2px solid var(--dark-green);
}

.form-group {
    margin-bottom: 2rem;
}

label {
    display: block;
    margin-bottom: 0.75rem;
    color: var(--blue);
    font-weight: 600;
    font-size: 1.1rem;
}

.input-field {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--dark-green);
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--light-bg);
    color: var(--blue);
}

.input-field:focus {
    outline: none;
    border-color: var(--dark-green);
    box-shadow: 0 0 0 4px rgba(20, 69, 4, 0.1);
}

.help-text {
    display: block;
    margin-top: 0.5rem;
    color: var(--lighter-blue);
    font-size: 0.85rem;
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.checkbox-label {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: var(--light-bg);
    border: 2px solid var(--dark-green);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.checkbox-label:hover {
    background: var(--light-cream);
    border-color: var(--dark-green);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow);
}

.checkbox-label input[type="checkbox"] {
    margin-right: 0.75rem;
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--blue);
}

.checkbox-label span {
    font-size: 1rem;
    color: var(--blue);
    font-weight: 500;
}

.submit-btn {
    width: 100%;
    padding: 1.25rem;
    background: #144504;
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    box-shadow: 0 4px 12px rgba(20, 69, 4, 0.3);
}

.submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow-strong);
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.loader {
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top: 3px solid white;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

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

.result-section,
.error-section {
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-card {
    border-color: var(--dark-green);
}

.result-card h2 {
    color: var(--blue);
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

.itinerary-content {
    color: var(--blue);
    line-height: 1.8;
    white-space: pre-wrap;
}

.itinerary-content h3 {
    color: var(--blue);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.itinerary-content ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.itinerary-content li {
    margin-bottom: 0.5rem;
}

.error-card {
    border-color: var(--dark-green);
    background: #fff8f0;
}

.error-card h3 {
    color: var(--blue);
    margin-bottom: 1rem;
}

.error-card p {
    color: var(--blue);
}

footer {
    text-align: center;
    padding: 2rem 0;
    color: var(--lighter-blue);
    font-size: 0.95rem;
}

/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .card {
        padding: 1.5rem;
    }
    
    .checkbox-group {
        grid-template-columns: 1fr;
    }
}

/* Add some decorative elements with pure CSS */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    right: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(235, 188, 141, 0.15) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

body::after {
    content: '';
    position: fixed;
    bottom: -50%;
    left: -50%;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, rgba(36, 74, 123, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}