/* Variables */
:root {
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --secondary: #7209b7;
    --light: #f8f9fa;
    --dark: #212529;
    --success: #38b000;
    --warning: #ff9e00;
    --danger: #e63946;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    --focus-ring: 0 0 0 0.25rem rgba(67, 97, 238, 0.25);
    --transition-speed: 0.2s;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--light);
    margin: 0;
    padding: 0;
}

/* Screen reader only utility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

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

header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--gray-300);
}

.calculator {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    padding: 2rem;
    margin-bottom: 2rem;
}

/* Logo & Privacy Statement */
.logo-container {
    text-align: center;
    margin-bottom: 1rem;
}

.logo {
    max-width: 200px;
    height: auto;
}

.privacy-statement {
    font-size: 0.8rem;
    color: var(--gray-600);
    margin-top: 1rem;
    padding: 0.75rem;
    background-color: var(--gray-100);
    border-radius: 4px;
    text-align: left;
    line-height: 1.4;
}

/* Typography */
h1 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.subtitle {
    color: var(--secondary);
    font-weight: 300;
    margin-bottom: 0.5rem;
}

.info-text {
    font-size: 0.9rem;
    color: var(--gray-600);
    text-align: center;
    margin-top: 1rem;
}

/* Form Elements */
.input-group {
    margin-bottom: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.form-heading {
    font-weight: 600;
    margin-bottom: 0.5rem;
    text-align: center;
}

input[type="number"],
input[type="text"],
input[type="email"],
input[type="date"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition-speed) ease-in-out, box-shadow var(--transition-speed) ease-in-out;
}

input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: var(--focus-ring);
}

input:disabled {
    background-color: var(--gray-200);
    cursor: not-allowed;
}

/* Radio Buttons for Equity Type */
.radio-group {
    display: flex;
    gap: 1.5rem;
    margin-top: 0.5rem;
}

.radio-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: normal;
}

.radio-label input[type="radio"] {
    margin: 0;
    cursor: pointer;
    width: 16px;
    height: 16px;
}

/* Slider */
.slider-container {
    margin: 2.5rem 0;
}

.slider-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

input[type="range"] {
    width: 100%;
    height: 8px;
    -webkit-appearance: none;
    background: var(--gray-300);
    border-radius: 5px;
    outline: none;
    margin: 1rem 0;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    background: var(--primary);
    border-radius: 50%;
    cursor: pointer;
    transition: background var(--transition-speed) ease-in-out;
}

input[type="range"]:focus {
    outline: none;
}

input[type="range"]:focus::-webkit-slider-thumb {
    box-shadow: 0 0 0 3px rgba(67, 97, 238, 0.3);
}

input[type="range"]::-webkit-slider-thumb:hover {
    background: var(--primary-dark);
}

/* Results Display */
.result {
    display: flex;
    justify-content: space-between;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-300);
}

.result-item {
    text-align: center;
    flex: 1;
    padding: 1rem;
}

.result-label {
    font-size: 0.9rem;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.result-value {
    font-size: 1.8rem;
    font-weight: 600;
    color: var(--primary);
}

.equity-value {
    color: var(--success);
}

/* Buttons */
.share-button,
.accept-button,
.copy-button {
    border: none;
    font-size: 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color var(--transition-speed), transform var(--transition-speed);
    font-family: inherit;
}

.share-button {
    background-color: var(--primary);
    color: white;
    padding: 0.75rem 1.5rem;
}

.share-button:hover, .share-button:focus {
    background-color: var(--primary-dark);
    transform: translateY(-1px);
}

.share-button:focus, .accept-button:focus, .copy-button:focus {
    outline: none;
    box-shadow: var(--focus-ring);
}

.share-button:disabled, .accept-button:disabled, .copy-button:disabled {
    background-color: var(--gray-500);
    cursor: not-allowed;
    transform: none;
}

.accept-button {
    background-color: var(--success);
    color: white;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
}

.accept-button:hover, .accept-button:focus {
    background-color: #2d9900;
    transform: translateY(-1px);
}

.copy-button {
    background-color: var(--warning);
    color: white;
    padding: 0.4rem 0.75rem;
    font-size: 0.85rem;
    display: inline-block;
}

.copy-button:hover, .copy-button:focus {
    background-color: #e08e00;
}

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

.success-button:hover, .success-button:focus {
    background-color: #2d9900;
}
/* Resources link */
.resources-link {
    display: inline-flex;
    align-items: center;
    margin-left: 8px;
    color: var(--primary);
    text-decoration: none;
    font-weight: normal;
    font-size: 0.85rem;
    transition: color var(--transition-speed);
}

.resources-link:hover,
.resources-link:focus {
    color: var(--primary-dark);
    text-decoration: underline;
}

.resources-icon {
    font-style: normal;
    font-size: 1rem;
}

/* Responsive Design */
/* Share & Accept Containers */
.share-container, #accept-offer-container {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-300);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

#accept-offer-container {
    text-align: center;
}

.status-message {
    margin-top: 1rem;
    text-align: left;
    background-color: var(--gray-100);
    padding: 1rem;
    border-radius: 4px;
}

.share-link {
    margin-top: 1rem;
    padding: 1rem;
    background-color: var(--gray-100);
    border-radius: 4px;
    font-family: monospace;
    word-break: break-all;
}

.share-link-container {
    position: relative;
    margin-top: 1rem;
}

.email-status {
    margin-top: 0.5rem;
    text-align: center;
    display: none;
}

.success-message {
    color: var(--success);
    font-weight: 600;
    text-align: center;
    margin-bottom: 1rem;
}

.error-message {
    color: var(--danger);
    font-weight: 600;
}

.email-display, .subject-display {
    font-weight: bold;
}

.email-content-container {
    margin-top: 1rem;
    border: 1px solid var(--gray-300);
    padding: 1rem;
    background-color: white;
}

.email-content {
    width: 100%;
    height: 150px;
    padding: 0.5rem;
    margin-top: 0.5rem;
    border: 1px solid var(--gray-300);
    font-family: inherit;
    resize: vertical;
}

.copy-container {
    display: flex;
    align-items: center;
    margin-top: 0.5rem;
}

/* Employee mode banner */
.employee-mode-banner {
    background-color: var(--warning);
    color: white;
    text-align: center;
    padding: 0.5rem;
    margin-bottom: 1rem;
    border-radius: 4px;
    font-weight: 600;
    display: none;
}

/* Email sending controls - centered */
#email-sending-controls {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 500px;
}

#send-email-button {
    width: auto;
    min-width: 200px;
    margin: 0 auto;
}

/* Error Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: white;
    margin: auto;
    padding: 2rem;
    border-radius: 8px;
    width: 90%;
    max-width: 500px;
    position: relative;
}

.close-button {
    position: absolute;
    top: 1rem;
    right: 1rem;
    color: var(--gray-600);
    font-size: 1.5rem;
    font-weight: bold;
    cursor: pointer;
}

.close-button:hover, .close-button:focus {
    color: var(--dark);
}

#error-modal h2 {
    color: var(--danger);
    margin-bottom: 1rem;
}

#error-modal button {
    margin-top: 1rem;
}

/* Copyright */
.copyright-footer {
    text-align: center;
    margin-top: 1.5rem;
    font-size: 0.6rem;
    color: var(--gray-600);
}

/* Responsive Design */
@media (max-width: 600px) {
    .container {
        padding: 0.5rem;
    }
    
    .calculator {
        padding: 1rem;
    }
    
    /* Add more whitespace above the logo on mobile */
    .logo-container {
        margin-top: 1.5rem;
    }
    
    .result {
        flex-direction: column;
    }
    
    .result-item {
        margin-bottom: 1rem;
    }
    
    input[type="number"], input[type="text"], input[type="email"], input[type="date"] {
        font-size: 16px; /* Prevents zoom on iOS */
        padding: 0.5rem;
    }
    
    .share-button, .accept-button {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .copy-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .copy-button {
        margin-top: 0.5rem;
        width: 100%;
    }
    
    .radio-group {
        flex-direction: column;
        gap: 0.5rem;
    }
}