/**
 * AI Business Audit - Modern Frontend Styles
 * 
 * Professional, modern styling with contemporary design trends
 * Optimized for conversion and user engagement
 */

/* CSS Custom Properties for consistent theming */
:root {
    /* Primary Colors - Professional Blue Palette */
    --primary-50: #eff6ff;
    --primary-100: #dbeafe;
    --primary-200: #bfdbfe;
    --primary-300: #93c5fd;
    --primary-400: #60a5fa;
    --primary-500: #3b82f6;
    --primary-600: #2563eb;
    --primary-700: #1d4ed8;
    --primary-800: #1e40af;
    --primary-900: #1e3a8a;
    
    /* Secondary Colors - Success Green */
    --success-50: #f0fdf4;
    --success-100: #dcfce7;
    --success-500: #22c55e;
    --success-600: #16a34a;
    --success-700: #15803d;
    
    /* Accent Colors - Modern Purple */
    --accent-50: #faf5ff;
    --accent-100: #f3e8ff;
    --accent-500: #a855f7;
    --accent-600: #9333ea;
    
    /* Warning & Error */
    --warning-500: #f59e0b;
    --error-500: #ef4444;
    
    /* Neutral Colors */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen-Sans, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
    --font-display: 'Inter', var(--font-sans);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(255, 255, 255, 0.18);
    --glass-backdrop: blur(20px);
}

/* Global Styles */
.aibiz-container {
    max-width: 56rem;
    margin: 0 auto;
    padding: var(--space-lg);
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--gray-800);
    position: relative;
}

.aibiz-container *,
.aibiz-container *::before,
.aibiz-container *::after {
    box-sizing: border-box;
}

/* Modern Background Pattern */
.aibiz-container::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 25% 25%, var(--primary-100) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, var(--accent-100) 0%, transparent 50%),
        linear-gradient(135deg, var(--gray-50) 0%, var(--primary-50) 100%);
    z-index: -2;
    pointer-events: none;
}

/* Screen Management with improved animations */
.aibiz-screen {
    display: none;
    animation: slideInUp 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.aibiz-screen.aibiz-active {
    display: block;
}

@keyframes slideInUp {
    from { 
        opacity: 0; 
        transform: translateY(2rem) scale(0.95);
    }
    to { 
        opacity: 1; 
        transform: translateY(0) scale(1);
    }
}

/* Welcome Screen - Hero Section */
.aibiz-welcome {
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
    position: relative;
}

.aibiz-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: var(--space-lg);
    background: linear-gradient(135deg, var(--primary-600), var(--accent-600));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
    letter-spacing: -0.025em;
}

.aibiz-description {
    font-size: 1.25rem;
    color: var(--gray-600);
    margin-bottom: var(--space-3xl);
    max-width: 42rem;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
    font-weight: 400;
}

/* Glassmorphism Cards */
.aibiz-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr));
    gap: var(--space-xl);
    margin: var(--space-3xl) 0;
}

.aibiz-feature {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-xl);
    text-align: left;
    transition: all var(--transition-slow);
    position: relative;
    overflow: hidden;
}

.aibiz-feature::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-500), var(--accent-500));
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
}

.aibiz-feature:hover::before {
    transform: translateX(0);
}

.aibiz-feature:hover {
    transform: translateY(-0.5rem);
    box-shadow: var(--shadow-2xl);
    background: rgba(255, 255, 255, 0.4);
}

.aibiz-feature-icon {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary-500), var(--accent-500));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-md);
    display: block;
}

.aibiz-feature-content h4 {
    margin: 0 0 var(--space-sm) 0;
    color: var(--gray-800);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.aibiz-feature-content p {
    margin: 0;
    color: var(--gray-600);
    line-height: 1.6;
}

/* Modern Pricing Card */
.aibiz-pricing {
    margin: var(--space-3xl) 0;
    padding: 0;
    background: transparent;
    border-radius: 0;
    text-align: center;
    position: relative;
}

.aibiz-pricing-card {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 50%, var(--accent-600) 100%);
    color: white;
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
}

.aibiz-pricing-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
    pointer-events: none;
}

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

.aibiz-price-content {
    position: relative;
    z-index: 1;
}

.aibiz-price-amount {
    font-size: 3rem;
    font-weight: 900;
    display: block;
    line-height: 1;
    margin-bottom: var(--space-sm);
}

.aibiz-price-note {
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 500;
}

/* Enhanced Buttons */
.aibiz-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    line-height: 1.4;
    letter-spacing: -0.025em;
}

.aibiz-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
    transition: left var(--transition-slow);
}

.aibiz-btn:hover::before {
    left: 100%;
}

.aibiz-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

.aibiz-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

.aibiz-btn:disabled::before {
    display: none;
}

.aibiz-btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: white;
    box-shadow: var(--shadow-lg);
}

.aibiz-btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
}

.aibiz-btn-secondary {
    background: white;
    color: var(--primary-600);
    border: 2px solid var(--primary-200);
    box-shadow: var(--shadow-md);
}

.aibiz-btn-secondary:hover:not(:disabled) {
    background: var(--primary-50);
    border-color: var(--primary-300);
    transform: translateY(-1px);
}

.aibiz-btn-large {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1.125rem;
    border-radius: var(--radius-xl);
}

/* Assessment Form Enhancements */
.aibiz-question {
    margin-bottom: var(--space-xl);
    padding: var(--space-2xl);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-backdrop);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    position: relative;
    transition: all var(--transition-base);
}

.aibiz-question:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.aibiz-question-title {
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
    color: var(--gray-800);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.025em;
}

.aibiz-question-description {
    color: var(--gray-600);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

/* Enhanced Form Inputs */
.aibiz-question-input {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    font-size: 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    background: white;
    box-shadow: var(--shadow-sm);
}

.aibiz-question-input:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1), var(--shadow-md);
    transform: translateY(-1px);
}

/* Modern Checkbox/Radio Groups */
.aibiz-checkbox-group,
.aibiz-radio-group {
    display: grid;
    gap: var(--space-md);
}

.aibiz-checkbox-label,
.aibiz-radio-label {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    box-shadow: var(--shadow-sm);
}

.aibiz-checkbox-label:hover,
.aibiz-radio-label:hover {
    border-color: var(--primary-300);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.aibiz-checkbox-label:has(.aibiz-checkbox-input:checked),
.aibiz-radio-label:has(.aibiz-radio-input:checked) {
    background: linear-gradient(135deg, var(--primary-50), var(--accent-50));
    border-color: var(--primary-500);
    box-shadow: var(--shadow-lg);
}

.aibiz-checkbox-input,
.aibiz-radio-input {
    width: 1.25rem;
    height: 1.25rem;
    margin: 0;
    cursor: pointer;
    accent-color: var(--primary-600);
}

/* Progress Bar */
.aibiz-progress-bar {
    width: 100%;
    height: 0.75rem;
    background: var(--gray-200);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: var(--space-md);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.aibiz-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-500), var(--accent-500));
    border-radius: var(--radius-lg);
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.aibiz-progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.3) 50%, transparent 70%);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Processing Screen */
.aibiz-processing {
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
}

.aibiz-spinner-large {
    width: 4rem;
    height: 4rem;
    border: 4px solid var(--gray-200);
    border-left: 4px solid var(--primary-600);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-xl);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.aibiz-processing-steps {
    display: grid;
    gap: var(--space-lg);
    max-width: 32rem;
    margin: 0 auto;
    text-align: left;
}

.aibiz-step {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: white;
    border-radius: var(--radius-lg);
    border: 2px solid var(--gray-200);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.aibiz-step.aibiz-active {
    background: linear-gradient(135deg, var(--primary-50), var(--accent-50));
    border-color: var(--primary-500);
    color: var(--primary-700);
    box-shadow: var(--shadow-lg);
    transform: scale(1.02);
}

.aibiz-step-number {
    width: 2rem;
    height: 2rem;
    background: var(--gray-200);
    color: var(--gray-600);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.aibiz-step.aibiz-active .aibiz-step-number {
    background: linear-gradient(135deg, var(--primary-600), var(--accent-600));
    color: white;
}

/* Success/Error States */
.aibiz-success,
.aibiz-error {
    text-align: center;
    padding: var(--space-3xl) var(--space-lg);
}

.aibiz-success-icon,
.aibiz-error-icon {
    font-size: 5rem;
    margin-bottom: var(--space-xl);
    display: block;
    animation: bounce 0.6s ease-out;
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        animation-timing-function: cubic-bezier(0.215, 0.610, 0.355, 1.000);
        transform: translate3d(0,0,0);
    }
    40%, 43% {
        animation-timing-function: cubic-bezier(0.755, 0.050, 0.855, 0.060);
        transform: translate3d(0, -1rem, 0);
    }
    70% {
        animation-timing-function: cubic-bezier(0.755, 0.050, 0.855, 0.060);
        transform: translate3d(0, -0.5rem, 0);
    }
    90% {
        transform: translate3d(0,-0.25rem,0);
    }
}

.aibiz-success-icon {
    color: var(--success-600);
}

.aibiz-error-icon {
    color: var(--error-500);
}

/* Notifications */
.aibiz-notification {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    padding: var(--space-lg) var(--space-xl);
    border-radius: var(--radius-lg);
    color: white;
    font-weight: 600;
    z-index: 10000;
    animation: slideInRight 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: var(--shadow-xl);
    backdrop-filter: blur(10px);
    max-width: 24rem;
}

@keyframes slideInRight {
    from { 
        transform: translateX(100%) scale(0.9);
        opacity: 0;
    }
    to { 
        transform: translateX(0) scale(1);
        opacity: 1;
    }
}

.aibiz-notification.aibiz-success {
    background: linear-gradient(135deg, var(--success-600), var(--success-700));
}

.aibiz-notification.aibiz-error {
    background: linear-gradient(135deg, var(--error-500), #dc2626);
}

/* Mobile Responsive Improvements */
@media (max-width: 768px) {
    .aibiz-container {
        padding: var(--space-md);
    }
    
    .aibiz-title {
        font-size: 2.5rem;
        line-height: 1.1;
    }
    
    .aibiz-features {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .aibiz-feature {
        padding: var(--space-lg);
    }
    
    .aibiz-question {
        padding: var(--space-lg);
        margin-bottom: var(--space-lg);
    }
    
    .aibiz-question-title {
        font-size: 1.25rem;
    }
    
    .aibiz-btn {
        width: 100%;
        justify-content: center;
    }
    
    .aibiz-notification {
        left: var(--space-md);
        right: var(--space-md);
        max-width: none;
    }
}

@media (max-width: 480px) {
    .aibiz-container {
        padding: var(--space-sm);
    }
    
    .aibiz-welcome {
        padding: var(--space-xl) var(--space-md);
    }
    
    .aibiz-title {
        font-size: 2rem;
    }
    
    .aibiz-description {
        font-size: 1.125rem;
    }
    
    .aibiz-question {
        padding: var(--space-md);
    }
    
    .aibiz-question-input {
        font-size: 1rem; /* Prevents zoom on iOS */
    }
    
    .aibiz-pricing-card {
        padding: var(--space-lg);
    }
    
    .aibiz-price-amount {
        font-size: 2.5rem;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    :root {
        --glass-bg: rgba(0, 0, 0, 0.25);
        --glass-border: rgba(255, 255, 255, 0.18);
    }
    
    .aibiz-container {
        color: var(--gray-100);
    }
    
    .aibiz-container::before {
        background: 
            radial-gradient(circle at 25% 25%, var(--primary-900) 0%, transparent 50%),
            radial-gradient(circle at 75% 75%, var(--accent-900) 0%, transparent 50%),
            linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
    }
    
    .aibiz-question-input {
        background: var(--gray-800);
        border-color: var(--gray-600);
        color: var(--gray-100);
    }
    
    .aibiz-checkbox-label,
    .aibiz-radio-label {
        background: var(--gray-800);
        border-color: var(--gray-600);
        color: var(--gray-100);
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .aibiz-spinner,
    .aibiz-spinner-large {
        animation: none;
        border-left-color: transparent;
    }
    
    .aibiz-progress-fill::after {
        animation: none;
    }
}

/* High contrast support */
@media (prefers-contrast: high) {
    .aibiz-question-input:focus {
        border-width: 3px;
    }
    
    .aibiz-btn {
        border-width: 2px;
    }
}

/* Print styles */
@media print {
    .aibiz-container::before {
        display: none;
    }
    
    .aibiz-container {
        max-width: none;
        padding: 0;
        background: white;
    }
    
    .aibiz-btn,
    .aibiz-spinner,
    .aibiz-spinner-large,
    .aibiz-notification {
        display: none !important;
    }
    
    .aibiz-screen {
        display: block !important;
    }
    
    .aibiz-question {
        break-inside: avoid;
        background: white;
        border: 1px solid var(--gray-300);
    }
}