/* Base styles and CSS reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 100;
    text-decoration: none;
    font-weight: 600;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 0;
    outline: 2px solid white;
    outline-offset: 2px;
}

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --background: #ffffff;
    --background-alt: #f9fafb;
    --border-color: #e5e7eb;
    --error-color: #dc2626;
    --success-color: #16a34a;
    --warning-color: #d97706;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --border-radius: 0.5rem;
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--text-color);
    background-color: var(--background);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Container */
.container {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Header */
.header {
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.app-name {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.developer-info {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* Main content */
.main-content {
    flex: 1;
    padding: var(--spacing-xl) 0;
}

.main-content h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-lg);
    color: var(--text-color);
}

/* Footer */
.footer {
    background-color: var(--background-alt);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg) 0;
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-light);
}

.footer a {
    color: var(--primary-color);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

.footer p {
    margin-bottom: var(--spacing-sm);
}

.footer p:last-child {
    margin-bottom: 0;
}

/* Responsive design - Mobile first */
@media (min-width: 640px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    .app-name {
        font-size: 2rem;
    }
    
    .main-content h2 {
        font-size: 1.75rem;
    }
}

@media (min-width: 768px) {
    .header {
        padding: var(--spacing-xl) 0;
    }
    
    .main-content {
        padding: var(--spacing-xl) 0 calc(var(--spacing-xl) * 2);
    }
}

/* Sections */
.section {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--border-color);
}

.section:last-of-type {
    border-bottom: none;
}

.section h3 {
    font-size: 1.25rem;
    color: var(--text-color);
    margin-bottom: var(--spacing-md);
}

/* Procedure steps */
.procedure-steps {
    padding-left: var(--spacing-lg);
}

.procedure-steps li {
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-sm);
}

/* Data types list */
.data-types-list {
    list-style: none;
}

.data-types-list li {
    background-color: var(--background-alt);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--primary-color);
}

.data-types-list li:last-child {
    margin-bottom: 0;
}

.data-types-list strong {
    display: block;
    margin-bottom: var(--spacing-xs);
    color: var(--text-color);
}

.data-types-list p {
    color: var(--text-light);
    font-size: 0.9375rem;
    margin: 0;
}

/* Info box */
.info-box {
    background-color: var(--background-alt);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.info-box p {
    margin-bottom: var(--spacing-sm);
}

.info-box p:last-child {
    margin-bottom: 0;
}

/* Consequence cards */
.consequence-card {
    background-color: var(--background-alt);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid var(--border-color);
}

.consequence-card:last-child {
    margin-bottom: 0;
}

.consequence-card h4 {
    font-size: 1rem;
    color: var(--text-color);
    margin-bottom: var(--spacing-sm);
}

.consequence-card ul {
    padding-left: var(--spacing-lg);
    margin: 0;
}

.consequence-card li {
    margin-bottom: var(--spacing-xs);
    color: var(--text-light);
}

.consequence-card li:last-child {
    margin-bottom: 0;
}

.consequence-account {
    border-left-color: var(--warning-color);
}

.consequence-geolocation {
    border-left-color: var(--primary-color);
}

.consequence-legal {
    border-left-color: var(--error-color);
}

/* Warning box */
.warning-box {
    background-color: #fef3c7;
    border: 1px solid var(--warning-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
}

.warning-box p {
    margin-bottom: var(--spacing-sm);
}

.warning-box p:last-child {
    margin-bottom: 0;
}

.warning-box ul {
    padding-left: var(--spacing-lg);
    margin: var(--spacing-sm) 0;
}

.warning-box li {
    margin-bottom: var(--spacing-xs);
}


/* Form styles */
.deletion-form {
    max-width: 100%;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-color);
}

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

.form-input {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    font-family: inherit;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--background);
    color: var(--text-color);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

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

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

.form-input.input-error:focus {
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

/* Fieldset reset */
fieldset {
    border: none;
    padding: 0;
    margin: 0;
}

fieldset legend {
    padding: 0;
}

/* Checkbox styles */
.checkbox-group {
    margin-bottom: var(--spacing-sm);
}

.checkbox-indent {
    margin-left: var(--spacing-lg);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    gap: var(--spacing-sm);
}

.checkbox-input {
    width: 20px;
    height: 20px;
    min-width: 20px;
    margin-top: 2px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.checkbox-text {
    flex: 1;
    line-height: 1.5;
}

.confirmation-group {
    background-color: var(--background-alt);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

/* Error messages */
.error-message {
    display: block;
    color: var(--error-color);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

/* Success message */
.success-message {
    background-color: #dcfce7;
    border: 1px solid var(--success-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.success-message h4 {
    color: var(--success-color);
    margin-bottom: var(--spacing-sm);
}

.success-message p {
    margin-bottom: var(--spacing-sm);
}

.success-message p:last-child {
    margin-bottom: 0;
}

/* Retained data message */
.retained-data-message {
    background-color: #fef3c7;
    border: 1px solid var(--warning-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.retained-data-message p {
    margin-bottom: var(--spacing-sm);
}

.retained-data-message ul {
    margin: 0;
    padding-left: var(--spacing-lg);
}

.retained-data-message li {
    color: var(--text-color);
}

/* Form actions */
.form-actions {
    margin-top: var(--spacing-xl);
}

/* Button styles */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease;
    min-height: 48px;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
}

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    width: 100%;
}

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

.btn-primary:focus {
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.3);
}

/* Responsive form styles */
@media (min-width: 640px) {
    .btn-primary {
        width: auto;
    }
    
    .checkbox-input {
        width: 18px;
        height: 18px;
        min-width: 18px;
    }
}


/* Enhanced mobile touch targets */
@media (max-width: 639px) {
    .checkbox-label {
        padding: var(--spacing-sm) 0;
        min-height: 44px;
    }
    
    .checkbox-input {
        width: 24px;
        height: 24px;
        min-width: 24px;
    }
    
    .form-input {
        font-size: 16px; /* Prevents zoom on iOS */
        min-height: 48px;
    }
    
    .btn {
        min-height: 52px;
        font-size: 1.0625rem;
    }
    
    .procedure-steps li,
    .data-types-list li,
    .consequence-card li {
        padding: var(--spacing-xs) 0;
    }
}

/* Smooth scrolling for all devices */
html {
    -webkit-overflow-scrolling: touch;
}

/* Focus visible for keyboard navigation */
.form-input:focus-visible,
.checkbox-input:focus-visible,
.btn:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .form-input {
        border-width: 3px;
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* Print styles */
@media print {
    .header {
        background-color: white;
        color: black;
    }
    
    .btn,
    .form-actions {
        display: none;
    }
    
    .section {
        page-break-inside: avoid;
    }
}


/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background-color: var(--primary-color);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 100;
    text-decoration: none;
    font-weight: 600;
    transition: top 0.2s ease;
}

.skip-link:focus {
    top: 0;
    outline: 2px solid white;
    outline-offset: 2px;
}