/* style.css - Complete Styles for Insurance Comparison Platform */

/* ============= CSS VARIABLES ============= */
:root {
    /* Colors */
    --primary-color: #3B82F6;
    --primary-dark: #2563EB;
    --primary-light: #60A5FA;
    --secondary-color: #10B981;
    --danger-color: #EF4444;
    --warning-color: #F59E0B;
    --info-color: #06B6D4;
    
    /* Dark theme colors */
    --bg-primary: #0F172A;
    --bg-secondary: #1E293B;
    --bg-tertiary: #334155;
    --surface: #1E293B;
    --surface-hover: #334155;
    
    /* Text colors */
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #3B82F6 0%, #2563EB 100%);
    --gradient-success: linear-gradient(135deg, #10B981 0%, #059669 100%);
    --gradient-dark: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    --gradient-glow: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(37, 99, 235, 0.05) 100%);
    
    /* Borders */
    --border-color: rgba(148, 163, 184, 0.1);
    --border-radius: 12px;
    --border-radius-lg: 20px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.15);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
}

/* ============= RESET & BASE ============= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============= TYPOGRAPHY ============= */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 2rem); }
h4 { font-size: clamp(1.1rem, 2.5vw, 1.5rem); }

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

/* ============= LAYOUT ============= */
#app {
    position: relative;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.view {
    display: none;
    min-height: 100vh;
    animation: fadeIn var(--transition-slow);
}

.view.active {
    display: flex;
    flex-direction: column;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============= UPLOAD VIEW ============= */
#upload-view {
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--bg-primary) 0%, #0A0F1F 100%);
    position: relative;
}

#upload-view::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(16, 185, 129, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

/* Hero Header */
.hero-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    animation: slideDown var(--transition-slow) ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo-section {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.logo-icon {
    font-size: 3rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.logo-text {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

.highlight {
    color: var(--primary-light);
    font-weight: 600;
}

/* Upload Section */
.upload-section {
    background: var(--surface);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-color);
    position: relative;
    max-width: 600px;
    width: 100%;
}

.upload-box {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    background: var(--bg-primary);
}

.upload-box::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-glow);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.upload-box:hover,
.upload-box.drag-over {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.upload-box:hover::before,
.upload-box.drag-over::before {
    opacity: 1;
}

.upload-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    position: relative;
    z-index: 1;
}

.upload-icon svg {
    color: var(--primary-color);
    transition: all var(--transition-base);
}

.upload-box:hover .upload-icon svg {
    transform: translateY(-5px);
    filter: drop-shadow(0 5px 10px rgba(59, 130, 246, 0.3));
}

.upload-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.upload-text {
    color: var(--text-secondary);
    font-size: 1rem;
}

.text-primary {
    color: var(--primary-light);
    font-weight: 500;
}

.upload-hint {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: var(--spacing-sm);
}

/* File List */
.file-list {
    margin-top: var(--spacing-lg);
    max-height: 300px;
    overflow-y: auto;
}

.file-list::-webkit-scrollbar {
    width: 6px;
}

.file-list::-webkit-scrollbar-track {
    background: var(--bg-primary);
    border-radius: 3px;
}

.file-list::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 3px;
}

.file-list::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

.no-files {
    text-align: center;
    color: var(--text-muted);
    padding: var(--spacing-lg);
    font-style: italic;
}

.file-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
}

.file-item:hover {
    background: var(--surface-hover);
    transform: translateX(5px);
}

.file-icon {
    font-size: 1.5rem;
}

.file-info {
    flex: 1;
    min-width: 0;
}

.file-name {
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-size {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.file-remove {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: 50%;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-remove:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    transform: scale(1.1);
}

/* Buttons */
.btn {
    font-family: inherit;
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius);
    padding: var(--spacing-md) var(--spacing-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), 0 0 20px rgba(59, 130, 246, 0.4);
}

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

.btn-secondary:hover:not(:disabled) {
    background: var(--surface-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.1rem;
    width: 100%;
    margin-top: var(--spacing-xl);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none !important;
}

.btn-icon {
    font-size: 1.25rem;
}

.btn.copied {
    background: var(--gradient-success) !important;
}

/* Info Cards */
.info-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-2xl);
}

.info-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.info-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.info-icon {
    font-size: 1.5rem;
}

.info-card h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 0.25rem 0;
}

.info-card p {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin: 0;
}

/* Footer */
.footer {
    text-align: center;
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-2xl);
    border-top: 1px solid var(--border-color);
}

.footer p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin: 0;
}

.footer strong {
    color: var(--text-secondary);
    font-weight: 600;
}

/* ============= RESULTS VIEW ============= */
#results-view {
    background: var(--bg-primary);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow-y: auto;
    z-index: 1000;
}

.results-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-lg);
    padding-top: 5rem;
}

/* Back Button */
.back-btn {
    position: fixed;
    top: var(--spacing-lg);
    left: var(--spacing-lg);
    background: var(--surface);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    transition: all var(--transition-base);
    z-index: 1001;
    font-family: inherit;
    font-weight: 500;
}

.back-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateX(-5px);
    box-shadow: var(--shadow-lg);
}

/* Loader */
.loader {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
    gap: var(--spacing-xl);
}

.loader-spinner {
    position: relative;
    width: 80px;
    height: 80px;
}

.spinner-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 3px solid transparent;
    border-radius: 50%;
    animation: spin 1.5s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

.spinner-ring:nth-child(1) {
    border-top-color: var(--primary-color);
    animation-delay: -0.45s;
}

.spinner-ring:nth-child(2) {
    border-right-color: var(--primary-light);
    animation-delay: -0.3s;
}

.spinner-ring:nth-child(3) {
    border-bottom-color: var(--secondary-color);
    animation-delay: -0.15s;
}

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

.loader-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.loader-text {
    color: var(--text-secondary);
    margin: 0;
}

.loader-progress {
    width: 300px;
    height: 4px;
    background: var(--bg-secondary);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: width 0.3s ease;
    width: 0%;
}

/* Results Content */
.results-content {
    animation: fadeIn var(--transition-slow);
}

.results-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.results-title {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.title-icon {
    font-size: 2rem;
}

.results-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin: 0;
}

/* Result Cards */
.result-card {
    background: var(--surface);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

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

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-primary);
}

.card-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0;
    font-size: 1.25rem;
}

.card-icon {
    font-size: 1.5rem;
}

.badge {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-premium {
    background: var(--gradient-primary);
    color: white;
}

.card-body {
    padding: var(--spacing-xl);
}

/* AI Commentary */
.commentary-card {
    border-left: 4px solid var(--primary-color);
}

.ai-commentary {
    line-height: 1.8;
    color: var(--text-secondary);
    transition: opacity var(--transition-base);
}

.ai-commentary p {
    margin-bottom: var(--spacing-lg);
}

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

/* Comparison Table */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--border-radius);
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.comparison-table th {
    background: var(--bg-primary);
    color: var(--text