:root {
    /* Semi Design Blue Palette */
    --color-primary: #0064FA;
    /* Blue 5 */
    --color-primary-hover: #0062D6;
    /* Blue 6 */
    --color-primary-active: #004FB3;
    /* Blue 7 */

    --color-text-on-primary: #ffffff;
    /* Always white on primary buttons */

    /* Semi Design Neutral/Dark Palette */
    --color-bg-body: #16161A;
    /* Semi Dark Bg 0 */
    --color-bg-card: #232429;
    /* Semi Dark Bg 1 */
    --color-bg-surface: #35363C;
    /* Semi Dark Bg 2 */

    --color-text-main: #F9F9F9;
    /* Semi White/Text */
    --color-text-muted: #8F959E;
    /* Semi Grey 5 roughly */
    --color-white: #ffffff;
    --color-border: #43444A;
    /* Semi Dark Border */

    --color-success: #3BB346;
    /* Semi Green 5 */
    --color-error: #FC1F42;
    /* Semi Red 5 */

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --container-width: 1200px;

    /* Semi Spacing (4px grid base) */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 32px;
    --spacing-xl: 64px;

    /* Semi Border Radius */
    --radius-sm: 3px;
    --radius-md: 6px;
    --radius-lg: 12px;

    /* Brand Updates */
    --color-bg-header: #F4F7FB;
    /* Option 1 Header Background */
    --color-border-bottom: #E5E7EB;
    /* Option 1 Border Bottom */

    --header-height-desktop: 64px;
    --header-height-mobile: 56px;
}

[data-theme="light"] {
    --color-bg-body: #FFFFFF;
    /* Semi Light Bg 0 */
    --color-bg-card: #FFFFFF;
    /* Semi Light Bg 1 */
    --color-bg-surface: #F4F5F7;

    --color-text-main: #1C1F23;
    --color-text-muted: #6B7075;
    --color-white: #1C1F23;
    --color-border: #E1E3E6;
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
    padding: 0.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.theme-toggle:hover {
    color: var(--color-white);
    background-color: rgba(148, 163, 184, 0.1);
}

[data-theme="light"] .theme-toggle:hover {
    background-color: rgba(15, 23, 42, 0.05);
}

.sun-icon {
    display: none;
}

.moon-icon {
    display: block;
}

[data-theme="light"] .sun-icon {
    display: block;
}

[data-theme="light"] .moon-icon {
    display: none;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--color-bg-body);
    color: var(--color-text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Typography */
h1,
h2,
h3 {
    line-height: 1.2;
    font-weight: 700;
    color: var(--color-white);
}

h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
}

p {
    color: var(--color-text-muted);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid transparent;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-text-on-primary);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    border-color: var(--color-text-muted);
    color: var(--color-white);
}

.btn-secondary:hover {
    border-color: var(--color-white);
    background-color: rgba(255, 255, 255, 0.05);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-bg-header);
    border-bottom: 1px solid var(--color-border-bottom);
    z-index: 1000;
    height: var(--header-height-desktop);
    display: flex;
    align-items: center;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    padding-left: 24px;
    /* Brand guideline: >= 24px */
}

.logo img {
    height: 42px;
    width: auto;
}

/* Main Content */
.signup-main {
    padding: 8rem 0 4rem;
    min-height: 100vh;
}

.signup-container {
    max-width: 700px;
    margin: 0 auto;
}

/* Onboarding: wider container, proportion similar to PDF form; step 1 two-column + full dropdown text */
.onboarding-main .signup-container {
    max-width: 1400px;
}

.signup-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.signup-header p {
    font-size: 1.125rem;
    margin-top: 0.5rem;
}

/* Progress Indicator */
.progress-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    z-index: 2;
}

.onboarding-main .progress-step {
    cursor: pointer;
    padding: 0.25rem;
    border-radius: var(--radius-md);
}
.onboarding-main .progress-step:hover {
    background-color: var(--color-bg-surface);
}
.onboarding-main .progress-step .step-label {
    font-size: 0.8rem;
}
.progress-indicator .step-label {
    white-space: nowrap;
}

.step-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--color-bg-card);
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--color-text-muted);
    transition: all 0.3s ease;
}

.progress-step.active .step-circle {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.progress-step.completed .step-circle {
    background-color: var(--color-success);
    border-color: var(--color-success);
    color: white;
}

.progress-step.has-error .step-circle {
    background-color: #dc2626;
    border-color: #dc2626;
    color: white;
}

.step-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

.progress-step.active .step-label {
    color: var(--color-white);
}

.progress-line {
    width: 100px;
    height: 2px;
    background-color: var(--color-border);
    margin: 0 1rem;
    position: relative;
    top: -12px;
}

.progress-step.completed~.progress-line {
    background-color: var(--color-success);
}

/* Form Styles */
.signup-form {
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.form-step {
    display: none;
}

.form-step.active {
    display: block;
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--color-white);
}

.required {
    color: var(--color-error);
}

/* Checkbox and label on one line (agreement checkboxes) */
.checkbox-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: nowrap;
    cursor: pointer;
}
.checkbox-label input[type="checkbox"] {
    width: auto;
    flex-shrink: 0;
    margin: 0;
}
.form-group .checkbox-label {
    display: inline-flex;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background-color: var(--color-bg-body);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-main);
    font-size: 1rem;
    font-family: var(--font-family);
    transition: all 0.3s ease;
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}
.onboarding-main .form-group textarea.textarea-describe-products,
.onboarding-main .form-group textarea[name="describeProductsOrServices"] {
    min-height: 140px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group input::placeholder {
    color: var(--color-text-muted);
}

.form-group select {
    cursor: pointer;
    min-width: 0; /* allow flex/grid shrink; full width of form-group shows text */
}
.onboarding-main .form-group select {
    width: 100%;
    max-width: 100%;
}

.error-message {
    display: block;
    color: var(--color-error);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    min-height: 1.25rem;
}

.form-group.error input,
.form-group.error select {
    border-color: var(--color-error);
}

.form-row {
    display: flex;
    gap: 1rem;
}

.form-row .form-group {
    flex: 1;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: var(--spacing-md);
}

.form-actions .btn {
    flex: 1;
}

.form-actions .btn-back {
    flex: 0.5;
}

/* Step 5 Disclosures: Save/Back left, Submit right, no misalignment */
.form-step[data-step="5"] .form-actions .btn-submit {
    margin-left: auto;
    min-width: 10rem;
}

/* Step 1: Business Profile (centered) → Copy button (centered) → Legal Information */
.step-1-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}
.step-1-dba-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}
.step-1-dba {
    min-width: 0;
    width: 100%;
    max-width: 100%;
}
.step-1-dba .form-section-title {
    text-align: center;
}
.step-1-copy-actions {
    display: flex;
    justify-content: center;
    margin: 0;
    width: 100%;
}
.step-1-legal {
    min-width: 0;
}

/* Message Screens */
.non-us-message,
.success-message {
    text-align: center;
    padding: var(--spacing-md) 0;
}

.message-icon {
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.message-icon.success {
    color: var(--color-success);
}

.message-text {
    font-size: 1.125rem;
    color: var(--color-text-main);
    margin-bottom: var(--spacing-sm);
}

.message-subtext {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-md);
}

/* Footer */
.footer {
    padding: 4rem 0 2rem;
    background-color: var(--color-bg-card);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 4rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--color-text-muted);
}

.footer-links a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    border-top: 1px solid var(--color-border);
    padding-top: 2rem;
}

.footer-tagline {
    font-weight: 600;
    color: var(--color-text-main);
    margin-top: 0.5rem;
    margin-bottom: 0.25rem;
}

.footer-logo-img {
    height: 80px;
    /* Increased 2.5x from 32px */
    width: auto;
    margin-bottom: 0.5rem;
    display: block;
}

.footer-description {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    max-width: 400px;
    line-height: 1.5;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .header {
        height: var(--header-height-mobile);
    }

    .logo img {
        height: 36px;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .signup-main {
        padding: 6rem 0 2rem;
    }

    .signup-form {
        padding: var(--spacing-md);
    }

    .progress-indicator {
        margin-bottom: var(--spacing-md);
    }

    .form-row {
        flex-direction: column;
    }

    .step-label {
        font-size: 0.75rem;
    }

    .progress-line {
        width: 60px;
        margin: 0 0.5rem;
    }

    .step-circle {
        width: 40px;
        height: 40px;
        font-size: 0.875rem;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn-back {
        flex: 1;
    }

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .footer-links {
        justify-content: center;
        flex-direction: column;
        gap: 1rem;
    }
}

/* Onboarding: extra fields (PeopleConnect-style) */
.onboarding-extra-fields .beneficial-owner-block {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}
.onboarding-extra-fields .beneficial-owner-block legend {
    padding: 0 var(--spacing-sm);
    color: var(--color-text-muted);
    font-size: 0.9rem;
}
.btn-sm {
    font-size: 0.875rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}
.disclosure-block {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md);
    background: var(--color-bg-surface);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
}
.disclosure-block h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}
.review-summary {
    margin: var(--spacing-md) 0;
}
.review-summary .review-section {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-border);
}
.review-summary .review-section:last-of-type {
    border-bottom: none;
}
.review-summary .review-section h3 {
    font-size: 0.95rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-muted);
}
.review-summary .review-content p {
    margin: 0.25em 0;
    font-size: 0.9rem;
}
.review-summary .review-content .muted {
    color: var(--color-text-muted);
}
.beneficial-owner-item {
    margin-bottom: var(--spacing-lg);
}
.beneficial-owner-item legend {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}