/* 
Platform Components - Reusable Design System Components
Consistent styling for forms, modals, notifications, and UI elements
*/

/* ==========================================================================
   DESIGN SYSTEM VARIABLES - Light & Dark Mode Support
   ========================================================================== */

/* Base body and html styling for proper dark mode */
html {
    background: var(--platform-background);
}

body {
    background: var(--platform-background);
    color: var(--platform-text-primary);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container, .main-content {
    background: inherit;
}

:root {
    /* Platform Design System - Enhanced for Dark Mode */
    --platform-primary: #007AFF;
    --platform-primary-hover: #0056CC;
    --platform-primary-light: rgba(0, 122, 255, 0.1);
    --platform-accent: #FF9500;
    --platform-accent-light: rgba(255, 149, 0, 0.1);
    
    /* Success, Warning, Error States */
    --platform-success: #30D158;
    --platform-success-light: rgba(48, 209, 88, 0.1);
    --platform-warning: #FF9500;
    --platform-warning-light: rgba(255, 149, 0, 0.1);
    --platform-error: #FF3B30;
    --platform-error-light: rgba(255, 59, 48, 0.1);
    
    /* Background Colors - Light Mode */
    --platform-background: #FFFFFF;
    --platform-background-subtle: #FBFBFD;
    --platform-surface: #FFFFFF;
    --platform-surface-elevated: #FFFFFF;
    
    /* Text Colors - Light Mode */
    --platform-text-primary: #000000;
    --platform-text-secondary: #3C3C43;
    --platform-text-tertiary: rgba(60, 60, 67, 0.6);
    --platform-text-placeholder: rgba(60, 60, 67, 0.3);
    
    /* Border Colors - Light Mode */
    --platform-border: rgba(60, 60, 67, 0.29);
    --platform-border-light: rgba(60, 60, 67, 0.12);
    
    /* Spacing System (8pt grid) */
    --platform-space-xs: 4px;
    --platform-space-sm: 8px;
    --platform-space-md: 16px;
    --platform-space-lg: 24px;
    --platform-space-xl: 32px;
    --platform-space-2xl: 40px;
    --platform-space-3xl: 48px;

    /* Component Sizes */
    --platform-checkbox-size: 18px;

    /* Border Radius */
    --platform-radius-sm: 6px;
    --platform-radius-md: 12px;
    --platform-radius-lg: 16px;
    --platform-radius-xl: 20px;
    --platform-radius-2xl: 24px;
    
    /* Shadows */
    --platform-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12);
    --platform-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --platform-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --platform-shadow-elevated: 0 12px 40px rgba(0, 0, 0, 0.2);
    
    /* Typography Scale */
    --platform-text-xs: 12px;
    --platform-text-sm: 14px;
    --platform-text-base: 16px;
    --platform-text-lg: 18px;
    --platform-text-xl: 20px;
    --platform-text-2xl: 24px;
    --platform-text-3xl: 30px;
    --platform-text-4xl: 36px;
    
    /* Animation */
    --platform-transition: all 0.2s ease;
    --platform-transition-fast: all 0.1s ease;
    --platform-transition-slow: all 0.3s ease;
}

/* Dark Mode Variables */
@media (prefers-color-scheme: dark) {
    :root {
        /* Background Colors - Dark Mode */
        --platform-background: #000000;
        --platform-background-subtle: #1C1C1E;
        --platform-surface: #1C1C1E;
        --platform-surface-elevated: #2C2C2E;
        
        /* Text Colors - Dark Mode */
        --platform-text-primary: #FFFFFF;
        --platform-text-secondary: rgba(235, 235, 245, 0.6);
        --platform-text-tertiary: rgba(235, 235, 245, 0.3);
        --platform-text-placeholder: rgba(235, 235, 245, 0.3);
        
        /* Border Colors - Dark Mode */
        --platform-border: rgba(84, 84, 88, 0.65);
        --platform-border-light: rgba(84, 84, 88, 0.2);
        
        /* Adjust shadows for dark mode */
        --platform-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
        --platform-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
        --platform-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
        --platform-shadow-elevated: 0 12px 40px rgba(0, 0, 0, 0.5);
    }
}

/* Force dark mode when body has dark class */
body.dark-mode {
    --platform-background: #000000;
    --platform-background-subtle: #1C1C1E;
    --platform-surface: #1C1C1E;
    --platform-surface-elevated: #2C2C2E;
    --platform-text-primary: #FFFFFF;
    --platform-text-secondary: rgba(235, 235, 245, 0.6);
    --platform-text-tertiary: rgba(235, 235, 245, 0.3);
    --platform-text-placeholder: rgba(235, 235, 245, 0.3);
    --platform-border: rgba(84, 84, 88, 0.65);
    --platform-border-light: rgba(84, 84, 88, 0.2);
    --platform-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --platform-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
    --platform-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
    --platform-shadow-elevated: 0 12px 40px rgba(0, 0, 0, 0.5);
}

/* ==========================================================================
   REUSABLE FORM COMPONENTS
   ========================================================================== */

/* Form Container */
.platform-form {
    background: var(--platform-surface);
    border-radius: var(--platform-radius-lg);
    border: none; /* Flat design - no borders */
    padding: var(--platform-space-xl);
    box-shadow: var(--platform-shadow-sm);
}

/* Form Sections */
.platform-form-section {
    margin-bottom: var(--platform-space-2xl);
}

.platform-form-section:last-child {
    margin-bottom: 0;
}

.platform-form-section-title {
    font-size: var(--platform-text-lg);
    font-weight: 600;
    color: var(--platform-text-primary);
    margin-bottom: var(--platform-space-md);
    display: flex;
    align-items: center;
    gap: var(--platform-space-sm);
}

.platform-form-section-subtitle {
    font-size: var(--platform-text-sm);
    color: var(--platform-text-secondary);
    margin-bottom: var(--platform-space-lg);
    line-height: 1.5;
}

/* Form Groups */
.platform-form-group {
    margin-bottom: var(--platform-space-lg);
}

.platform-form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--platform-space-md);
}

@media (min-width: 768px) {
    .platform-form-row {
        grid-template-columns: 1fr 1fr;
    }
    
    .platform-form-row.three-col {
        grid-template-columns: 1fr 1fr 1fr;
    }
}

/* Labels */
.platform-label {
    display: block;
    font-size: var(--platform-text-sm);
    font-weight: 500;
    color: var(--platform-text-primary);
    margin-bottom: var(--platform-space-xs);
    line-height: 1.4;
}

.platform-label.required::after {
    content: " *";
    color: var(--platform-error);
}

/* Input Fields */
.platform-input,
.platform-select,
.platform-textarea {
    width: 100%;
    padding: var(--platform-space-md);
    border: 1px solid var(--platform-border);
    border-radius: var(--platform-radius-md);
    font-size: var(--platform-text-base);
    color: var(--platform-text-primary);
    background: var(--platform-background);
    transition: var(--platform-transition);
    font-family: 'Montserrat', 'Helvetica', 'Arial', sans-serif;
}

.platform-input:focus,
.platform-select:focus,
.platform-textarea:focus {
    outline: none;
    border-color: var(--platform-primary);
    box-shadow: 0 0 0 3px var(--platform-primary-light);
}

.platform-input::placeholder,
.platform-textarea::placeholder {
    color: var(--platform-text-placeholder);
}

.platform-textarea {
    resize: vertical;
    min-height: 100px;
}

/* Input States */
.platform-input.error,
.platform-select.error,
.platform-textarea.error {
    border-color: var(--platform-error);
    box-shadow: 0 0 0 3px var(--platform-error-light);
}

.platform-input.success,
.platform-select.success,
.platform-textarea.success {
    border-color: var(--platform-success);
    box-shadow: 0 0 0 3px var(--platform-success-light);
}

.platform-input:disabled,
.platform-select:disabled,
.platform-textarea:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Checkbox and Radio */
.platform-checkbox,
.platform-radio {
    appearance: none;
    width: var(--platform-checkbox-size);
    height: var(--platform-checkbox-size);
    max-width: var(--platform-checkbox-size); /* Prevent horizontal stretching */
    max-height: var(--platform-checkbox-size); /* Prevent vertical stretching */
    border: 2px solid var(--platform-border);
    margin-right: var(--platform-space-sm);
    position: relative;
    cursor: pointer;
    transition: var(--platform-transition);
    flex-shrink: 0;
    align-self: center; /* Prevent vertical stretching in flex containers */
    box-sizing: border-box; /* Ensure consistent sizing */
}

.platform-checkbox {
    border-radius: var(--platform-radius-sm);
}

.platform-radio {
    border-radius: 50%;
}

.platform-checkbox:checked,
.platform-radio:checked {
    background-color: var(--platform-primary);
    border-color: var(--platform-primary);
}

.platform-checkbox:checked::after {
    content: '';
    position: absolute;
    top: 1px;
    left: 4px;
    width: 6px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.platform-radio:checked::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: white;
}

/* Help Text */
.platform-help-text {
    font-size: var(--platform-text-xs);
    color: var(--platform-text-secondary);
    margin-top: var(--platform-space-xs);
    line-height: 1.4;
}

/* Error Messages */
.platform-error-message {
    font-size: var(--platform-text-xs);
    color: var(--platform-error);
    margin-top: var(--platform-space-xs);
    display: flex;
    align-items: center;
    gap: var(--platform-space-xs);
}

.platform-error-message::before {
    content: '⚠';
    font-size: var(--platform-text-sm);
}

.platform-field-errors {
    margin-top: var(--platform-space-xs);
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--platform-space-xs);
    padding: var(--platform-space-md) var(--platform-space-lg);
    border: none;
    border-radius: var(--platform-radius-md);
    font-size: var(--platform-text-base);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--platform-transition);
    min-height: 48px;
    font-family: 'Montserrat', 'Helvetica', 'Arial', sans-serif;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Button Variants */
.btn-primary {
    background: var(--platform-primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--platform-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--platform-shadow-md);
}

.btn-outline {
    background: transparent;
    color: var(--platform-primary);
    border: 1px solid var(--platform-primary);
}

.btn-outline:hover:not(:disabled) {
    background: var(--platform-primary-light);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--platform-surface-elevated);
    color: var(--platform-text-primary);
    border: 1px solid var(--platform-border);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--platform-background-subtle);
    transform: translateY(-1px);
    box-shadow: var(--platform-shadow-sm);
}

/* Button Sizes */
.btn-sm {
    padding: var(--platform-space-sm) var(--platform-space-md);
    font-size: var(--platform-text-sm);
    min-height: 36px;
}

.btn-lg {
    padding: var(--platform-space-lg) var(--platform-space-xl);
    font-size: var(--platform-text-lg);
    min-height: 56px;
}

/* Button States */
.btn-success {
    background: var(--platform-success);
    color: white;
}

.btn-warning {
    background: var(--platform-warning);
    color: white;
}

.btn-error {
    background: var(--platform-error);
    color: white;
}

/* ==========================================================================
   NOTIFICATION SYSTEM
   ========================================================================== */

/* Notification Container */
.notification-container {
    position: fixed;
    top: var(--platform-space-lg);
    right: var(--platform-space-lg);
    z-index: 9999;
    max-width: 400px;
    width: 100%;
    pointer-events: none;
}

@media (max-width: 768px) {
    .notification-container {
        top: var(--platform-space-md);
        right: var(--platform-space-md);
        left: var(--platform-space-md);
        max-width: none;
    }
}

/* Notification Toast */
.notification {
    background: var(--platform-surface-elevated);
    border: 1px solid var(--platform-border);
    border-radius: var(--platform-radius-lg);
    padding: var(--platform-space-md);
    margin-bottom: var(--platform-space-sm);
    box-shadow: var(--platform-shadow-lg);
    pointer-events: all;
    transform: translateX(100%);
    opacity: 0;
    transition: all 0.3s ease;
    backdrop-filter: blur(20px);
}

.notification.show {
    transform: translateX(0);
    opacity: 1;
}

.notification.hide {
    transform: translateX(100%);
    opacity: 0;
}

/* Notification Content */
.notification-content {
    display: flex;
    align-items: flex-start;
    gap: var(--platform-space-md);
}

.notification-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--platform-text-sm);
    margin-top: 2px;
}

.notification-body {
    flex: 1;
    min-width: 0;
}

.notification-title {
    font-weight: 600;
    font-size: var(--platform-text-sm);
    margin-bottom: var(--platform-space-xs);
    color: var(--platform-text-primary);
}

.notification-message {
    font-size: var(--platform-text-sm);
    color: var(--platform-text-secondary);
    line-height: 1.4;
}

.notification-close {
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--platform-text-tertiary);
    cursor: pointer;
    padding: var(--platform-space-xs);
    margin: calc(var(--platform-space-xs) * -1);
    border-radius: var(--platform-radius-sm);
    transition: var(--platform-transition);
}

.notification-close:hover {
    background: var(--platform-background-subtle);
    color: var(--platform-text-secondary);
}

/* Notification Types */
.notification.success .notification-icon {
    background: var(--platform-success);
    color: white;
}

.notification.error .notification-icon {
    background: var(--platform-error);
    color: white;
}

.notification.warning .notification-icon {
    background: var(--platform-warning);
    color: white;
}

.notification.info .notification-icon {
    background: var(--platform-primary);
    color: white;
}

/* Progress Bar for Auto-dismiss */
.notification-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    height: 2px;
    background: var(--platform-text-tertiary);
    border-radius: 0 0 var(--platform-radius-lg) var(--platform-radius-lg);
    transform-origin: left;
    transition: transform linear;
}

.notification.success .notification-progress {
    background: var(--platform-success);
}

.notification.error .notification-progress {
    background: var(--platform-error);
}

.notification.warning .notification-progress {
    background: var(--platform-warning);
}

.notification.info .notification-progress {
    background: var(--platform-primary);
}

/* ==========================================================================
   ENHANCED ALERT SYSTEM - Mobile-Optimized
   ========================================================================== */

/* Alert Banner - Full-width alerts for important messages */
.platform-alert {
    display: flex;
    align-items: flex-start;
    gap: var(--platform-space-sm);
    padding: var(--platform-space-md);
    border-radius: var(--platform-radius-md);
    border: 1px solid transparent;
    margin-bottom: var(--platform-space-md);
    font-size: var(--platform-text-sm);
    line-height: 1.4;
    position: relative;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.platform-alert-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 12px;
    font-weight: 600;
}

.platform-alert-content {
    flex: 1;
    min-width: 0;
}

.platform-alert-title {
    font-weight: 600;
    margin: 0 0 4px 0;
    color: inherit;
}

.platform-alert-message {
    margin: 0;
    color: inherit;
    opacity: 0.9;
    white-space: pre-wrap;
    word-break: break-word;
}

.platform-alert-close {
    flex-shrink: 0;
    background: none;
    border: none;
    padding: 2px;
    cursor: pointer;
    color: inherit;
    opacity: 0.7;
    transition: opacity 0.2s ease;
}

.platform-alert-close:hover {
    opacity: 1;
}

/* Alert Types */
.platform-alert.error {
    background: var(--platform-error-light);
    border-color: var(--platform-error);
    color: var(--platform-error);
}

.platform-alert.error .platform-alert-icon {
    background: var(--platform-error);
    color: white;
}

.platform-alert.success {
    background: var(--platform-success-light);
    border-color: var(--platform-success);
    color: var(--platform-success);
}

.platform-alert.success .platform-alert-icon {
    background: var(--platform-success);
    color: white;
}

.platform-alert.warning {
    background: var(--platform-warning-light);
    border-color: var(--platform-warning);
    color: var(--platform-warning);
}

.platform-alert.warning .platform-alert-icon {
    background: var(--platform-warning);
    color: white;
}

.platform-alert.info {
    background: rgba(0, 122, 255, 0.1);
    border-color: var(--platform-primary);
    color: var(--platform-primary);
}

.platform-alert.info .platform-alert-icon {
    background: var(--platform-primary);
    color: white;
}

/* Compact Alert Variant */
.platform-alert.compact {
    padding: var(--platform-space-sm);
    font-size: var(--platform-text-xs);
}

.platform-alert.compact .platform-alert-icon {
    width: 16px;
    height: 16px;
    font-size: 10px;
}

/* Mobile-specific improvements */
@media (max-width: 768px) {
    .platform-alert {
        padding: var(--platform-space-md);
        margin: var(--platform-space-sm) var(--platform-space-sm) var(--platform-space-md);
        border-radius: var(--platform-radius-sm);
        font-size: 14px;
    }

    .platform-alert-message {
        word-break: break-word;
        hyphens: auto;
    }

    /* Ensure proper text wrapping in narrow spaces */
    .platform-alert-content {
        overflow: hidden;
    }
}

/* Inline Error Messages - For form fields */
.platform-inline-error {
    display: flex;
    align-items: center;
    gap: 4px;
    margin-top: var(--platform-space-xs);
    padding: 4px 8px;
    background: var(--platform-error-light);
    border: 1px solid var(--platform-error);
    border-radius: var(--platform-radius-sm);
    font-size: var(--platform-text-xs);
    color: var(--platform-error);
    line-height: 1.3;
    word-break: break-word;
}

.platform-inline-error::before {
    content: '⚠';
    flex-shrink: 0;
}

/* Toast-style alerts for temporary messages */
.platform-toast {
    position: fixed;
    top: var(--platform-space-lg);
    right: var(--platform-space-lg);
    z-index: 10000;
    max-width: 400px;
    background: var(--platform-surface-elevated);
    border: 1px solid var(--platform-border);
    border-radius: var(--platform-radius-lg);
    box-shadow: var(--platform-shadow-lg);
    transform: translateX(100%);
    transition: transform 0.3s ease, opacity 0.3s ease;
    opacity: 0;
}

.platform-toast.show {
    transform: translateX(0);
    opacity: 1;
}

.platform-toast .platform-alert {
    margin: 0;
    border: none;
    border-radius: var(--platform-radius-lg);
}

@media (max-width: 768px) {
    .platform-toast {
        right: var(--platform-space-md);
        left: var(--platform-space-md);
        max-width: none;
    }
}

/* ==========================================================================
   MODAL COMPONENTS
   ========================================================================== */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--platform-space-lg);
    backdrop-filter: blur(10px);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.modal-overlay.show {
    opacity: 1;
}

.modal-content {
    background: var(--platform-surface);
    border-radius: var(--platform-radius-lg);
    box-shadow: var(--platform-shadow-elevated);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.95);
    transition: transform 0.2s ease;
}

.modal-overlay.show .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: var(--platform-space-lg);
    border-bottom: 1px solid var(--platform-border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: var(--platform-text-lg);
    font-weight: 600;
    color: var(--platform-text-primary);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--platform-text-tertiary);
    cursor: pointer;
    padding: var(--platform-space-xs);
    margin: calc(var(--platform-space-xs) * -1);
    border-radius: var(--platform-radius-sm);
    transition: var(--platform-transition);
}

.modal-close:hover {
    background: var(--platform-background-subtle);
    color: var(--platform-text-secondary);
}

.modal-body {
    padding: var(--platform-space-lg);
    overflow-y: auto;
    max-height: calc(90vh - 120px);
}

/* ==========================================================================
   UTILITY CLASSES
   ========================================================================== */

/* Spacing */
.p-xs { padding: var(--platform-space-xs); }
.p-sm { padding: var(--platform-space-sm); }
.p-md { padding: var(--platform-space-md); }
.p-lg { padding: var(--platform-space-lg); }
.p-xl { padding: var(--platform-space-xl); }

.m-xs { margin: var(--platform-space-xs); }
.m-sm { margin: var(--platform-space-sm); }
.m-md { margin: var(--platform-space-md); }
.m-lg { margin: var(--platform-space-lg); }
.m-xl { margin: var(--platform-space-xl); }

.mb-xs { margin-bottom: var(--platform-space-xs); }
.mb-sm { margin-bottom: var(--platform-space-sm); }
.mb-md { margin-bottom: var(--platform-space-md); }
.mb-lg { margin-bottom: var(--platform-space-lg); }
.mb-xl { margin-bottom: var(--platform-space-xl); }

.mt-xs { margin-top: var(--platform-space-xs); }
.mt-sm { margin-top: var(--platform-space-sm); }
.mt-md { margin-top: var(--platform-space-md); }
.mt-lg { margin-top: var(--platform-space-lg); }
.mt-xl { margin-top: var(--platform-space-xl); }

/* Typography */
.text-xs { font-size: var(--platform-text-xs); }
.text-sm { font-size: var(--platform-text-sm); }
.text-base { font-size: var(--platform-text-base); }
.text-lg { font-size: var(--platform-text-lg); }
.text-xl { font-size: var(--platform-text-xl); }
.text-2xl { font-size: var(--platform-text-2xl); }
.text-3xl { font-size: var(--platform-text-3xl); }
.text-4xl { font-size: var(--platform-text-4xl); }

.text-primary { color: var(--platform-text-primary); }
.text-secondary { color: var(--platform-text-secondary); }
.text-tertiary { color: var(--platform-text-tertiary); }

.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

/* Font Families - Consistent with homepage */
.font-sans { font-family: 'Montserrat', 'Helvetica', 'Arial', sans-serif; }
.font-logo { font-family: 'Comfortaa', sans-serif; }
.font-round { font-family: 'Varela Round', sans-serif; }
.font-karla { font-family: 'Karla', sans-serif; }

/* Display */
.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

/* Flexbox */
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.flex-1 { flex: 1; }
.gap-xs { gap: var(--platform-space-xs); }
.gap-sm { gap: var(--platform-space-sm); }
.gap-md { gap: var(--platform-space-md); }
.gap-lg { gap: var(--platform-space-lg); }

/* Borders */
.border { border: 1px solid var(--platform-border); }
.border-light { border: 1px solid var(--platform-border-light); }
.rounded-sm { border-radius: var(--platform-radius-sm); }
.rounded-md { border-radius: var(--platform-radius-md); }
.rounded-lg { border-radius: var(--platform-radius-lg); }
.rounded-xl { border-radius: var(--platform-radius-xl); }

/* Shadows */
.shadow-sm { box-shadow: var(--platform-shadow-sm); }
.shadow-md { box-shadow: var(--platform-shadow-md); }
.shadow-lg { box-shadow: var(--platform-shadow-lg); }

/* States */
.loading {
    pointer-events: none;
    opacity: 0.6;
}

.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* Responsive Visibility */
@media (max-width: 767px) {
    .hidden-mobile { display: none; }
}

@media (min-width: 768px) {
    .hidden-desktop { display: none; }
}

/* ==========================================================================
   REGISTRATION FORM SPECIFIC COMPONENTS
   ========================================================================== */

/* Messages */
.platform-form-messages {
    margin-bottom: var(--platform-space-lg);
}

.platform-message {
    padding: var(--platform-space-md);
    margin-bottom: var(--platform-space-sm);
    border-radius: var(--platform-radius-md);
    font-size: var(--platform-text-sm);
    line-height: 1.5;
}

.platform-message-error {
    background: var(--platform-error-light);
    border: 1px solid var(--platform-error);
    color: var(--platform-error);
}

.platform-message-success {
    background: var(--platform-success-light);
    border: 1px solid var(--platform-success);
    color: var(--platform-success);
}

.platform-message-warning {
    background: var(--platform-warning-light);
    border: 1px solid var(--platform-warning);
    color: var(--platform-warning);
}

.platform-message-info {
    background: var(--platform-primary-light);
    border: 1px solid var(--platform-primary);
    color: var(--platform-primary);
}

/* Button Components */
.platform-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--platform-space-xs);
    padding: var(--platform-space-md) var(--platform-space-lg);
    border: none;
    border-radius: var(--platform-radius-md);
    font-size: var(--platform-text-base);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--platform-transition);
    min-height: 48px;
    font-family: 'Montserrat', 'Helvetica', 'Arial', sans-serif;
}

.platform-button-primary {
    background: var(--platform-primary);
    color: white;
}

.platform-button-primary:hover:not(:disabled) {
    background: var(--platform-primary-hover);
}

.platform-button-secondary {
    background: var(--platform-background);
    color: var(--platform-text-primary);
    border: 1px solid var(--platform-border);
}

.platform-button-secondary:hover:not(:disabled) {
    background: var(--platform-background-subtle);
    border-color: var(--platform-primary);
    color: var(--platform-primary);
}

.platform-button-large {
    padding: var(--platform-space-lg) var(--platform-space-xl);
    font-size: var(--platform-text-lg);
    min-height: 56px;
}

.platform-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.platform-hidden {
    display: none;
}

.platform-loading-spinner {
    animation: platform-spin 1s linear infinite;
}

@keyframes platform-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Field Validation */
.platform-field-validation {
    margin-top: var(--platform-space-xs);
    font-size: var(--platform-text-sm);
}

.platform-validation-success {
    color: var(--platform-success);
}

.platform-validation-error {
    color: var(--platform-error);
}

.platform-field-help {
    font-size: var(--platform-text-xs);
    color: var(--platform-text-secondary);
    margin-top: var(--platform-space-xs);
    line-height: 1.4;
}

/* Password Requirements */
.platform-password-requirements {
    margin-top: var(--platform-space-sm);
}

.platform-password-requirements ul {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: var(--platform-text-sm);
}

.platform-password-requirements li {
    padding: var(--platform-space-xs) 0;
    color: var(--platform-text-secondary);
    position: relative;
    padding-left: var(--platform-space-lg);
}

.platform-password-requirements li:before {
    content: "○";
    position: absolute;
    left: 0;
    color: var(--platform-text-tertiary);
}

.platform-requirement-met {
    color: var(--platform-success) !important;
}

.platform-requirement-met:before {
    content: "✓" !important;
    color: var(--platform-success) !important;
    font-weight: bold;
}

.platform-requirement-unmet {
    color: var(--platform-text-secondary);
}

/* Checkbox Components */
.platform-checkbox-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--platform-space-sm);
    margin-top: var(--platform-space-sm);
}

.platform-checkbox-item {
    display: flex;
    align-items: center;
    gap: var(--platform-space-xs);
    padding: var(--platform-space-sm);
    background: var(--platform-background-subtle);
    border: 1px solid var(--platform-border-light);
    border-radius: var(--platform-radius-sm);
}

.platform-checkbox-item input[type="checkbox"] {
    margin: 0;
}

.platform-checkbox-item label {
    font-size: var(--platform-text-sm);
    color: var(--platform-text-primary);
    margin: 0;
    cursor: pointer;
}

.platform-checkbox-group {
    background: var(--platform-background-subtle);
    border-radius: var(--platform-radius-md);
    padding: var(--platform-space-lg);
    border: 1px solid var(--platform-border-light);
}

.platform-checkbox-field {
    display: flex;
    align-items: flex-start;
    gap: var(--platform-space-sm);
    margin-bottom: var(--platform-space-md);
}

.platform-checkbox-field:last-child {
    margin-bottom: 0;
}

.platform-checkbox-field input[type="checkbox"] {
    margin-top: 2px;
    flex-shrink: 0;
}

.platform-checkbox-field label {
    font-size: var(--platform-text-sm);
    line-height: 1.4;
    color: var(--platform-text-primary);
    cursor: pointer;
}

@media (max-width: 768px) {
    .platform-checkbox-grid {
        grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    }
}

/* ==========================================================================
   ONBOARDING COMPONENTS
   ========================================================================== */

/* Progress Indicator */
.platform-progress-container {
    text-align: center;
    margin-bottom: var(--platform-space-2xl);
}

.platform-progress-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--platform-space-md);
    margin-bottom: var(--platform-space-lg);
}

.platform-progress-step {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: var(--platform-text-sm);
}

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

.platform-progress-step.inactive {
    background: var(--platform-border);
    color: var(--platform-text-tertiary);
}

.platform-progress-connector {
    width: 40px;
    height: 2px;
    background: var(--platform-border);
}

.platform-progress-label {
    color: var(--platform-text-secondary);
    font-size: var(--platform-text-sm);
}

/* ==========================================================================
   UNIFIED CONTAINER SYSTEM - Responsive Design System
   ========================================================================== */

/* Base container styles - Mobile first approach */
.container-auth,
.container-content, 
.container-wide,
.container-full,
.container-xl,
.container-fluid {
    width: 100%;
    margin: 0 auto;
    padding: var(--platform-space-md);
}

/* Container size variants */
.container-auth {
    max-width: 480px;  /* Login, registration, simple forms */
}

.container-content {
    max-width: 800px;  /* Onboarding, content pages, forms */
}

.container-wide {
    max-width: 1200px; /* Dashboards, settings, user management */
}

.container-full {
    max-width: 1400px; /* Data tables, reports, wide content */
}

.container-xl {
    max-width: 1600px; /* Extra wide layouts, analytics */
}

.container-fluid {
    max-width: 100%; /* Full-width with padding constraints */
    min-width: 320px; /* Minimum width to prevent cramping */
}

/* Responsive breakpoints */
@media (min-width: 480px) {
    .container-auth,
    .container-content, 
    .container-wide,
    .container-full,
    .container-xl,
    .container-fluid {
        padding: var(--platform-space-lg);
    }
}

@media (min-width: 768px) {
    .container-auth,
    .container-content, 
    .container-wide,
    .container-full,
    .container-xl,
    .container-fluid {
        padding: var(--platform-space-xl);
    }
}

@media (min-width: 1024px) {
    .container-content, 
    .container-wide,
    .container-full,
    .container-xl,
    .container-fluid {
        padding: var(--platform-space-2xl) var(--platform-space-xl);
    }
}

/* ==========================================================================
   MODERN CONTAINER OPTIMIZATIONS
   ========================================================================== */

/* Dashboard main container */
.dashboard-main-container {
    padding-top: var(--platform-space-lg);
    padding-bottom: var(--platform-space-3xl);
}

/* School Management & Directory specific containers */
.school-management-container,
.student-directory-container {
    padding-top: 0;
    padding-bottom: var(--platform-space-2xl);
}

/* Directory Action Bar */
.directory-action-bar {
    padding: var(--platform-space-md) var(--platform-space-xl);
}

/* Mobile optimizations - Remove excessive padding */
@media (max-width: 767px) {
    /* Dashboard container mobile optimization */
    .dashboard-main-container {
        padding-top: var(--platform-space-md);
        padding-bottom: var(--platform-space-2xl);
    }
    
    /* School pages - minimal horizontal padding on mobile */
    .school-management-container,
    .student-directory-container {
        padding-top: 0;
        padding-bottom: var(--platform-space-xl);
    }
    
    /* Directory action bar mobile optimization */
    .directory-action-bar {
        padding: var(--platform-space-sm) var(--platform-space-md);
    }
    
    /* Override base container padding for edge-to-edge on mobile */
    .container-wide {
        padding-left: 0 !important;
        padding-right: 0 !important;
    }
    
    .container-content,
    .container-full {
        padding-left: 0 !important;
        padding-right: 0 !important;
    }
    
    /* Ensure stats grids have proper margin on edge-to-edge layout */
    .school-management-container .platform-stats-grid,
    .student-directory-container .ios-stats-grid {
        margin-left: var(--platform-space-md);
        margin-right: var(--platform-space-md);
    }
    
    /* Card content should have margin for readability */
    .school-management-container .platform-card,
    .school-management-container .ios-card,
    .student-directory-container .platform-card,
    .student-directory-container .ios-card {
        margin-left: var(--platform-space-md);
        margin-right: var(--platform-space-md);
    }
}

/* Tablet optimizations */
@media (min-width: 768px) and (max-width: 1023px) {
    .dashboard-main-container {
        padding-top: var(--platform-space-lg);
        padding-bottom: var(--platform-space-3xl);
    }
    
    .school-management-container,
    .student-directory-container {
        padding-top: 0;
        padding-bottom: var(--platform-space-2xl);
    }
    
    .directory-action-bar {
        padding: var(--platform-space-md) var(--platform-space-lg);
    }
}

/* Legacy compatibility - gradually migrate away from these */
.platform-onboarding-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--platform-space-lg);
}

@media (min-width: 768px) {
    .platform-onboarding-container {
        padding: var(--platform-space-xl) var(--platform-space-2xl);
    }
}

/* Welcome Header */
.platform-welcome-header {
    text-align: center;
    margin-bottom: var(--platform-space-2xl);
}

.platform-welcome-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--platform-primary), var(--platform-accent));
    border-radius: var(--platform-radius-xl);
    margin: 0 auto var(--platform-space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--platform-shadow-md);
}

.platform-welcome-title {
    font-size: var(--platform-text-3xl);
    font-weight: 700;
    color: var(--platform-text-primary);
    margin: 0 0 var(--platform-space-md) 0;
}

.platform-welcome-subtitle {
    font-size: var(--platform-text-lg);
    color: var(--platform-text-secondary);
    margin: 0;
    line-height: 1.5;
}

/* Account Type Badge */
.platform-account-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--platform-space-sm);
    background: var(--platform-background-subtle);
    padding: var(--platform-space-md) var(--platform-space-lg);
    border-radius: var(--platform-radius-lg);
    border: 1px solid var(--platform-border-light);
    margin-bottom: var(--platform-space-lg);
}

.platform-account-badge-text {
    font-weight: 600;
    color: var(--platform-text-primary);
}

.platform-user-info {
    color: var(--platform-text-secondary);
    margin: 0;
}

/* Feature Grid */
.platform-feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--platform-space-lg);
}

@media (min-width: 768px) {
    .platform-feature-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--platform-space-xl);
    }
}

.platform-feature-card {
    text-align: center;
    padding: var(--platform-space-xl);
    background: var(--platform-surface-elevated);
    border-radius: var(--platform-radius-xl);
    border: none;
    box-shadow: var(--platform-shadow-sm);
    transition: var(--platform-transition);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.platform-feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--platform-shadow-lg);
    background: var(--platform-surface);
}

.platform-feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--platform-primary), var(--platform-accent));
    opacity: 0;
    transition: var(--platform-transition);
}

.platform-feature-card:hover::before {
    opacity: 1;
}

.platform-feature-icon {
    width: 48px;
    height: 48px;
    background: var(--platform-primary-light);
    border-radius: var(--platform-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--platform-space-md);
}

.platform-feature-title {
    font-size: var(--platform-text-lg);
    font-weight: 600;
    color: var(--platform-text-primary);
    margin: 0 0 var(--platform-space-xs) 0;
}

.platform-feature-description {
    color: var(--platform-text-secondary);
    margin: 0;
    font-size: var(--platform-text-sm);
}

/* Action Center */
.platform-action-center {
    text-align: center;
}

.platform-onboarding-form {
    margin-bottom: var(--platform-space-lg);
}

.platform-skip-link {
    color: var(--platform-text-secondary);
    text-decoration: none;
    font-size: var(--platform-text-sm);
}

.platform-skip-link:hover {
    text-decoration: underline;
}

/* Enhanced Onboarding Form Card */
.platform-onboarding-card {
    background: var(--platform-surface);
    border-radius: var(--platform-radius-2xl);
    border: none;
    box-shadow: var(--platform-shadow-sm);
    margin-bottom: var(--platform-space-xl);
    overflow: hidden;
    backdrop-filter: blur(20px);
}

@media (min-width: 768px) {
    .platform-onboarding-card {
        margin-bottom: var(--platform-space-2xl);
    }
}

/* Enhanced Welcome Section */
.platform-welcome-section {
    text-align: center;
    padding: var(--platform-space-xl);
    background: var(--platform-surface);
}

@media (min-width: 768px) {
    .platform-welcome-section {
        padding: var(--platform-space-2xl);
    }
}

/* Progress Section Improvements */
.platform-progress-section {
    text-align: center;
    margin-bottom: var(--platform-space-2xl);
    padding: var(--platform-space-lg);
    background: var(--platform-surface);
    border-radius: var(--platform-radius-xl);
    border: 1px solid var(--platform-border-light);
}

@media (min-width: 768px) {
    .platform-progress-section {
        padding: var(--platform-space-xl);
    }
}

/* Utility Classes for Dark Mode Support */
.platform-text-emphasis {
    color: var(--platform-text-primary);
    font-weight: 600;
}

.platform-text-center {
    text-align: center;
    margin-bottom: var(--platform-space-lg);
}

.platform-button-wide {
    min-width: 200px;
}

.platform-button-extra-wide {
    min-width: 250px;
}

.platform-button-icon-right {
    margin-left: var(--platform-space-xs);
}

.platform-button-icon-left {
    margin-right: var(--platform-space-xs);
}

/* Margin utilities */
.platform-margin-top-sm {
    margin-top: var(--platform-space-sm);
}

.platform-margin-top-lg {
    margin-top: var(--platform-space-lg);
}

/* Badge component */
.platform-badge {
    display: inline-block;
    padding: var(--platform-space-xs) var(--platform-space-sm);
    border-radius: var(--platform-radius-sm);
    font-size: var(--platform-text-xs);
    font-weight: 500;
}

.platform-badge-warning {
    background: var(--platform-warning-light);
    color: var(--platform-warning);
}

/* ==========================================================================
   PLATFORM COMPONENT SYSTEM - Replaces iOS-* classes
   ========================================================================== */

/* Platform Cards - Replace ios-card */
.platform-card {
    background: var(--platform-surface);
    border: none; /* Flat design - no borders */
    border-radius: var(--platform-radius-lg);
    padding: var(--platform-space-lg);
    box-shadow: var(--platform-shadow-sm);
    transition: all 0.2s ease;
}

.platform-card:hover {
    box-shadow: var(--platform-shadow-md);
    transform: translateY(-2px);
}

.platform-card-large {
    padding: var(--platform-space-xl);
    border-radius: var(--platform-radius-xl);
}

/* Platform Stats Grid - Replace ios-stats-grid */
.platform-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--platform-space-md);
    margin: var(--platform-space-lg) 0;
}

@media (min-width: 769px) {
    .platform-stats-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Platform Stat Cards - Replace ios-stat-card */
.platform-stat-card {
    background: var(--platform-surface);
    border: none; /* Flat design - no borders */
    border-radius: var(--platform-radius-lg);
    padding: var(--platform-space-lg);
    text-align: center;
    transition: all 0.2s ease;
    box-shadow: var(--platform-shadow-sm);
}

.platform-stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--platform-shadow-md);
}

.platform-stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--platform-primary);
    line-height: 1;
    margin-bottom: var(--platform-space-sm);
}

.platform-stat-label {
    font-size: var(--platform-text-sm);
    font-weight: 500;
    color: var(--platform-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   UNIFIED DASHBOARD CARD SYSTEM - Mobile Optimized
   ========================================================================== */

/* Consistent heights for all dashboard stat cards */
.platform-stat-card,
.ios-stat-card {
    min-height: 120px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
}

/* Ensure stat values are consistently sized */
.platform-stat-value,
.ios-stat-value {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1;
    margin-bottom: 0.25rem;
}

/* Ensure stat labels are consistent */
.platform-stat-label,
.ios-stat-label {
    font-size: var(--platform-text-xs);
    color: var(--platform-text-secondary);
    font-weight: 500;
    text-align: center;
    line-height: 1.2;
    opacity: 0.8;
}

/* Mobile dashboard improvements */
@media (max-width: 768px) {
    /* Top-level stats grid - 2x2 on mobile */
    .platform-stats-grid,
    .school-management-container .platform-stats-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: var(--platform-space-sm) !important;
        margin: var(--platform-space-md) 0 !important;
    }

    .platform-stat-card {
        min-height: 100px;
        padding: var(--platform-space-md);
    }

    .platform-stat-value,
    .ios-stat-value {
        font-size: clamp(1.2rem, 5vw, 1.8rem);
        color: var(--platform-primary);
    }

    .platform-stat-label,
    .ios-stat-label {
        font-size: 11px;
        margin-top: 4px;
    }

    /* School-level horizontal stats */
    .ios-stats-grid.school-stats-horizontal {
        display: grid !important;
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-2);
        padding: 0;
        margin: 0;
    }

    .ios-stats-grid.school-stats-horizontal .ios-stat-card-small {
        min-height: 65px;
        padding: var(--space-2);
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        text-align: center;
        background: var(--system-background-secondary);
        border-radius: var(--radius-medium);
        border: none;
        flex: 1;
        min-width: 0;
    }

    .ios-stat-value-small {
        font-size: var(--text-callout);
        font-weight: 600;
        line-height: 1;
        margin-bottom: 2px;
        color: var(--text-primary);
    }

    .ios-stat-label-small {
        font-size: 10px;
        color: var(--text-secondary);
        font-weight: 500;
        line-height: 1;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
        width: 100%;
    }
}

/* Dark mode enhancements */
@media (prefers-color-scheme: dark) {
    .platform-stat-card,
    .ios-stat-card,
    .ios-stat-card-small {
        background: var(--system-background-secondary);
        border-color: var(--ios-gray-4);
    }

    .platform-stat-value,
    .ios-stat-value,
    .ios-stat-value-small {
        color: var(--text-primary);
    }

    .platform-stat-label,
    .ios-stat-label,
    .ios-stat-label-small {
        color: var(--text-secondary);
        opacity: 0.9;
    }
}

/* School card container improvements */
@media (max-width: 768px) {
    .school-card-mobile {
        margin-left: var(--space-2) !important; /* Reduced margin */
        margin-right: var(--space-2) !important;
        margin-bottom: var(--space-3) !important; /* Tighter spacing */
        border-radius: var(--radius-large) !important;
    }

    .school-card-mobile > div {
        padding: var(--space-3) !important; /* Reduced padding */
    }

    /* Better school header alignment */
    .school-card-mobile h2 {
        font-size: var(--text-title-3) !important;
        line-height: 1.2 !important;
        margin: 0 0 var(--space-1) 0 !important; /* Tighter spacing */
    }

    /* School avatar improvements */
    .school-card-mobile .school-avatar {
        width: 36px;
        height: 36px;
        border-radius: var(--radius-medium);
        flex-shrink: 0;
    }

    /* Optimize overall container spacing */
    .container-content.school-management-container,
    .container-content.student-directory-container {
        padding: var(--space-3) !important; /* Reduced from default */
    }

    .container-content {
        padding-top: var(--space-3) !important; /* Tighter top spacing */
    }

    /* Platform cards general optimization */
    .platform-card {
        margin-bottom: var(--space-3) !important; /* Tighter card spacing */
        padding: var(--space-3) !important; /* Reduced internal padding */
    }

    .ios-card,
    .ios-card-large {
        margin-bottom: var(--space-3) !important;
        padding: var(--space-3) !important;
    }

    /* Better button spacing */
    .ios-button + .ios-button,
    .platform-btn + .platform-btn {
        margin-top: var(--space-2) !important; /* Tighter button stacking */
    }

    /* Form groups optimization */
    .ios-form-group,
    .platform-form-group {
        margin-bottom: var(--space-3) !important; /* Reduced form spacing */
    }

    /* Section spacing optimization */
    .animate-fade-in-up {
        margin-bottom: var(--space-4) !important; /* Slightly reduced section gaps */
    }
}

/* Platform Forms - Replace ios-form-* */
.platform-form-group {
    margin-bottom: var(--platform-space-lg);
}

.platform-form-label {
    display: block;
    font-weight: 500;
    color: var(--platform-text-primary);
    margin-bottom: var(--platform-space-sm);
}

.platform-form-input {
    width: 100%;
    padding: var(--platform-space-md);
    border: 1px solid var(--platform-border);
    border-radius: var(--platform-radius-md);
    background: var(--platform-surface);
    color: var(--platform-text-primary);
    font-size: 1rem;
    transition: all 0.2s ease;
}

.platform-form-input:focus {
    outline: none;
    border-color: var(--platform-primary);
    box-shadow: 0 0 0 3px var(--platform-primary-light);
}

/* Platform List Items - Replace ios-list-item */
.platform-list-item {
    display: flex;
    align-items: center;
    padding: var(--platform-space-md) var(--platform-space-lg);
    background: var(--platform-surface);
    border: 1px solid var(--platform-border);
    border-radius: var(--platform-radius-md);
    margin-bottom: var(--platform-space-sm);
    transition: all 0.2s ease;
    text-decoration: none;
    color: inherit;
}

.platform-list-item:hover {
    background: var(--platform-background-subtle);
    border-color: var(--platform-primary);
}

/* Registration Landing Page Styles */
.platform-auth-container {
    width: 100%;
    max-width: none;
}

.platform-auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.platform-auth-header h1 {
    color: var(--platform-text-primary);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.platform-auth-header p {
    color: var(--platform-text-secondary);
    font-size: 1rem;
    margin: 0;
}

.platform-account-type-selection {
    margin: 2rem 0;
}

.platform-account-type-selection h3 {
    color: var(--platform-text-primary);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-align: center;
}

.platform-account-type-cards {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}

/* Force vertical layout at all screen sizes to prevent overflow */
@media (min-width: 768px) {
    .platform-account-type-cards {
        grid-template-columns: 1fr;
        max-width: 500px;
        margin: 0 auto 2rem;
        gap: 1rem;
    }
}

@media (min-width: 1200px) {
    .platform-account-type-cards {
        max-width: 600px;
        gap: 1.5rem;
    }
}

.platform-account-type-card {
    position: relative;
}

.platform-account-type-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.platform-account-type-card label {
    display: block;
    padding: 1.5rem;
    border: 2px solid var(--platform-border);
    border-radius: var(--platform-radius-lg);
    background: var(--platform-surface);
    color: var(--platform-text-primary);
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    height: 100%;
}

.platform-account-type-card input[type="radio"]:checked + label {
    border-color: var(--platform-primary);
    background: var(--platform-primary-light);
}

.platform-account-type-card:hover label {
    border-color: var(--platform-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--platform-shadow-lg);
}

.platform-card-icon {
    color: var(--platform-primary);
    margin: 0 auto 1rem;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
}

.platform-account-type-card h4 {
    color: var(--platform-text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.platform-account-type-card p {
    color: var(--platform-text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.platform-feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

.platform-feature-list li {
    color: var(--platform-text-secondary);
    font-size: 0.85rem;
    padding: 0.25rem 0;
    position: relative;
    padding-left: 1rem;
}

.platform-feature-list li:before {
    content: "✓";
    color: var(--platform-success);
    font-weight: bold;
    position: absolute;
    left: 0;
}

.platform-auth-footer {
    text-align: center;
    margin-top: 2rem;
}

.platform-auth-footer p {
    color: var(--platform-text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

/* Registration Form Auth Components */
.platform-auth-container {
    text-align: center;
}

.platform-auth-nav {
    margin-bottom: 2rem;
    text-align: left;
}

.platform-back-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--platform-text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 0.5rem;
    border-radius: var(--platform-radius-md);
    transition: var(--platform-transition);
}

.platform-back-button:hover {
    color: var(--platform-primary);
    background: var(--platform-background-subtle);
}

.platform-auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.platform-account-type-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--platform-primary-light);
    color: var(--platform-primary);
    padding: 0.5rem 1rem;
    border-radius: var(--platform-radius-full);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: capitalize;
    margin-bottom: 1rem;
}

.platform-auth-title {
    color: var(--platform-text-primary);
    font-size: 2rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
}

.platform-auth-subtitle {
    color: var(--platform-text-secondary);
    font-size: 1.1rem;
    margin: 0;
    line-height: 1.5;
}

.platform-features-preview {
    background: var(--platform-background-subtle);
    border-radius: var(--platform-radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
    text-align: left;
}

.platform-features-title {
    color: var(--platform-text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 1rem 0;
}

.platform-feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.platform-feature-list li {
    color: var(--platform-text-secondary);
    font-size: 0.9rem;
    padding: 0.25rem 0;
    position: relative;
    padding-left: 1.5rem;
}

.platform-feature-list li:before {
    content: "✓";
    color: var(--platform-success);
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* Center alignment for registration forms */
.platform-auth-container .platform-form {
    text-align: left;
}

.platform-auth-container .platform-button {
    margin: 2rem auto 0;
    display: block;
    width: 100%;
    max-width: 400px;
}

/* User Menu Backdrop Blur */
.user-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
}

.user-menu-backdrop {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    cursor: pointer;
    transition: all 0.3s ease;
}

.user-menu-content {
    position: absolute;
    top: 60px;
    right: 20px;
    width: 320px;
    max-height: calc(100vh - 100px);
    overflow-y: auto;
    z-index: 1001;
    box-shadow: var(--platform-shadow-elevated);
}

.platform-auth-footer a {
    color: var(--platform-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

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