/* Custom styles for Carry Trade Calculator */
body {
    font-family: 'Inter', sans-serif;
    background-color: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    background-color: #ffffff;
    border-radius: 15px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    padding: 30px;
    width: 100%;
    max-width: 500px;
}

input[type="number"], select {
    border: 1px solid #d1d5db;
    border-radius: 8px;
    padding: 12px;
    font-size: 16px;
    width: 100%;
    box-sizing: border-box;
    transition: border-color 0.2s;
}

input[type="number"]:focus, select:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

input:invalid {
    border-color: #ef4444;
}

input:invalid:focus {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.25);
}

button {
    background-color: #3b82f6;
    color: white;
    padding: 14px 20px;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    width: 100%;
    border: none;
}

button:hover:not(:disabled) {
    background-color: #2563eb;
    transform: translateY(-1px);
}

button:active:not(:disabled) {
    transform: translateY(0);
}

button:disabled {
    background-color: #9ca3af;
    cursor: not-allowed;
    transform: none;
}

.result-text {
    font-size: 24px;
    font-weight: 700;
    text-align: center;
    margin-top: 20px;
    padding: 15px;
    border-radius: 10px;
    background-color: #f8f9fa;
}

.positive {
    color: #10b981; /* Green */
}

.negative {
    color: #ef4444; /* Red */
}

/* Hide number inputs by default */
.hidden-input {
    display: none;
}

.help-icon {
    display: inline-block;
    margin-left: 8px;
    background-color: #e0e7ff;
    color: #3b82f6;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    text-align: center;
    font-size: 14px;
    font-weight: bold;
    cursor: pointer;
    line-height: 20px;
    transition: background-color 0.2s;
    border: none;
}

.help-icon:hover {
    background-color: #bfdbfe;
}

.help-icon:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease-in-out, visibility 0.3s ease-in-out;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: #ffffff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    max-width: 400px;
    width: 90%;
    position: relative;
    transform: translateY(-20px);
    transition: transform 0.3s ease-in-out;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    font-size: 24px;
    cursor: pointer;
    color: #9ca3af;
    transition: color 0.2s;
    background: none;
    border: none;
    padding: 0;
    width: auto;
}

.modal-close-btn:hover {
    color: #6b7280;
}

.modal-close-btn:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

.percentage-display {
    font-size: 1.25rem; /* text-xl */
    font-weight: 700; /* font-bold */
    margin-left: 10px;
}

.info-link {
    display: block;
    text-align: left;
    margin-bottom: 10px;
    font-size: 1.125rem; /* text-lg */
    color: #3b82f6;
    cursor: pointer;
    text-decoration: underline;
    transition: color 0.2s;
    background: none;
    border: none;
    padding: 0;
    width: auto;
}

.info-link:hover {
    color: #2563eb;
}

.info-link:focus {
    outline: 2px solid #3b82f6;
    outline-offset: 2px;
}

.error-message {
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 0.25rem;
    min-height: 1.25rem;
}

/* Responsive design */
@media (max-width: 640px) {
    .container {
        padding: 20px;
        margin: 10px;
    }
    
    .modal-content {
        padding: 20px;
        max-width: 90%;
    }
    
    input[type="number"], select {
        font-size: 16px; /* Prevent zoom on iOS */
    }
}

/* Print styles */
@media print {
    .modal-overlay {
        display: none;
    }
    
    .help-icon {
        display: none;
    }
    
    .info-link {
        display: none;
    }
    
    button {
        display: none;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .container {
        border: 2px solid #000;
    }
    
    input[type="number"], select {
        border: 2px solid #000;
    }
    
    button {
        border: 2px solid #000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}