:root {
    --color-primary: #024F1E;
    --color-primary-light: #049739;
    --color-accent: #FFCC17;
    --color-accent-dark: #E6B800;
    --color-text: #333;
    --color-text-light: #666;
    --color-error: #dc3545;
    --color-success: #28a745;
    --color-border: #ddd;
    --color-background: #f8f9fa;
    --font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
    --border-radius: 10px;
    --border-radius-large: 20px;
    --shadow: 0 10px 30px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

* { box-sizing: border-box; }
body { 
    margin: 0; 
    padding: 0; 
    font-family: var(--font-family);
    line-height: 1.6;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--color-primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
}
.skip-link:focus { top: 6px; }

.header { 
    background: white; 
    padding: 20px; 
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}
.header-content { 
    max-width: 1200px; 
    margin: 0 auto; 
    display: flex; 
    justify-content: space-between; 
    align-items: center;
}
.logo-section { 
    display: flex; 
    align-items: center; 
    gap: 10px;
}
.logo-text { 
    margin: 0; 
    font-size: 28px; 
    font-weight: bold; 
    color: var(--color-primary);
}
.hero { 
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%); 
    color: white; 
    padding: 80px 20px; 
    text-align: center;
}
.hero-content { 
    max-width: 1200px; 
    margin: 0 auto;
}
.hero h1 { 
    font-size: clamp(32px, 8vw, 56px); 
    font-weight: bold; 
    margin-bottom: 20px; 
    line-height: 1.2;
}
.hero-highlight { 
    color: var(--color-accent);
}
.btn-primary { 
    background: var(--color-accent); 
    color: var(--color-primary); 
    padding: 16px 32px; 
    border-radius: 25px; 
    border: none; 
    font-weight: bold; 
    font-size: 18px; 
    cursor: pointer; 
    transition: var(--transition);
    min-height: 44px;
    min-width: 44px;
    text-decoration: none;
    display: inline-block;
}
.btn-primary:hover, .btn-primary:focus { 
    background: var(--color-accent-dark); 
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

.feature-card { 
    background: white; 
    padding: 40px 30px; 
    border-radius: var(--border-radius-large); 
    box-shadow: var(--shadow); 
    text-align: center; 
}
.feature-icon { 
    width: 80px; 
    height: 80px; 
    border-radius: 50%; 
    display: flex; 
    align-items: center; 
    justify-content: center; 
    margin: 0 auto 20px; 
    font-size: 32px; 
}
.form-container {
    background: white;
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    margin: 0 auto;
    border: 1px solid rgba(255, 255, 255, 0.25);
    position: relative;
    min-height: 400px;
}
.form-group { 
    margin-bottom: 20px; 
    text-align: left; 
}
.form-label { 
    display: block; 
    margin-bottom: 5px; 
    color: var(--color-text); 
    font-weight: bold; 
}
.form-input { 
    width: 100%; 
    padding: 15px; 
    border: 2px solid var(--color-border); 
    border-radius: var(--border-radius); 
    font-size: 16px; 
    box-sizing: border-box; 
    transition: var(--transition);
}
.form-input:focus { 
    border-color: var(--color-primary); 
    outline: 2px solid var(--color-primary); 
    outline-offset: 2px; 
}
.form-input:invalid {
    border-color: var(--color-error);
}
.form-input.error {
    border-color: var(--color-error);
}
.form-input.success {
    border-color: var(--color-success);
}
.error-message {
    color: var(--color-error);
    font-size: 14px;
    margin-top: 5px;
    display: none;
}
.error-message.show {
    display: block;
}
.success-message {
    color: var(--color-success);
    font-size: 16px;
    margin-top: 15px;
}
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.image-placeholder {
    background: var(--color-background);
    border: 2px dashed var(--color-border);
    border-radius: var(--border-radius-large);
    padding: 40px 20px;
    text-align: center;
    color: var(--color-text-light);
    font-size: 16px;
}

/* Loading state styles */
.btn-loading {
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-loading:hover {
    background: var(--color-accent) !important;
}

/* Success state styles */
.form-success-state {
    transition: var(--transition);
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.form-success-state h3 {
    font-size: 32px;
    color: var(--color-primary);
    margin-bottom: 20px;
    font-weight: bold;
}

.form-success-state p {
    font-size: 18px;
    color: var(--color-text);
    margin-bottom: 30px;
    max-width: 600px;
    line-height: 1.6;
}

.form-success-state .success-icon {
    font-size: 64px;
    margin-bottom: 20px;
    animation: successPulse 2s ease-in-out;
}

.refresh-hint {
    font-size: 14px;
    opacity: 0.7;
    color: var(--color-text-light);
    margin-top: 20px;
    font-style: italic;
}

/* Success animation */
@keyframes successPulse {
    0% { transform: scale(0.5); opacity: 0; }
    50% { transform: scale(1.1); opacity: 1; }
    100% { transform: scale(1); opacity: 1; }
}

/* Hide/show transitions */
.form-fields {
    transition: all 0.5s ease;
    opacity: 1;
    transform: translateY(0);
}

.form-fields.hiding {
    opacity: 0;
    transform: translateY(-20px);
    pointer-events: none;
}

.form-success-message {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
    visibility: hidden;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    pointer-events: none;
}

.form-success-message.showing {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
    position: static;
    pointer-events: auto;
}

/* Founding users section */
.founding-users-section {
    background: rgba(255, 204, 23, 0.1);
    border: 2px solid var(--color-accent);
    border-radius: var(--border-radius);
    padding: 20px;
    margin-bottom: 20px;
}

.founding-users-checkbox {
    transform: scale(1.2);
    margin-top: 4px;
    accent-color: var(--color-accent);
}

.founding-users-label {
    cursor: pointer;
    color: var(--color-primary);
    font-weight: bold;
    margin-bottom: 8px;
    display: block;
}

.founding-users-description {
    margin: 0;
    font-size: 14px;
    color: var(--color-primary);
    line-height: 1.4;
}

/* Success message "What happens next" section */
.form-success-state div[style*="rgba(255, 204, 23, 0.2)"] {
    color: var(--color-primary) !important;
}

.form-success-state div[style*="rgba(255, 204, 23, 0.2)"] p {
    color: var(--color-primary) !important;
}

.form-success-state div[style*="rgba(255, 204, 23, 0.2)"] li {
    color: var(--color-primary) !important;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
    }
    .hero {
        padding: 60px 20px;
    }
    .form-container {
        margin: 0 20px;
        padding: 30px 20px;
    }
}

/* Focus styles for better accessibility */
button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Print styles */
@media print {
    .header,
    #signup-section,
    footer {
        display: none;
    }
}