/* Import Google Fonts - Professional Typography */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

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

:root {
    /* Professional Dark Theme Design System */
    
    /* Background Colors */
    --color-bg: #0a0a0a;
    --color-bg-secondary: #111111;
    --color-bg-tertiary: #1a1a1a;
    --color-bg-elevated: #222222;
    --color-bg-surface: #2a2a2a;
    --color-bg-glass: rgba(255, 255, 255, 0.05);
    --color-bg-glass-hover: rgba(255, 255, 255, 0.08);
    
    /* Text Colors */
    --color-text: #ffffff;
    --color-text-secondary: rgba(255, 255, 255, 0.8);
    --color-text-tertiary: rgba(255, 255, 255, 0.6);
    --color-text-muted: rgba(255, 255, 255, 0.4);
    
    /* Border Colors */
    --color-border: rgba(255, 255, 255, 0.1);
    --color-border-light: rgba(255, 255, 255, 0.05);
    --color-border-accent: rgba(59, 130, 246, 0.3);
    
    /* Accent Colors */
    --color-primary: #3b82f6;
    --color-primary-light: rgba(59, 130, 246, 0.1);
    --color-primary-dark: #2563eb;
    --color-hover: rgba(255, 255, 255, 0.05);
    --color-active: rgba(255, 255, 255, 0.08);
    
    /* Status Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    
    /* Shadows */
    --color-shadow: rgba(0, 0, 0, 0.6);
    --color-shadow-light: rgba(0, 0, 0, 0.3);
    --color-shadow-medium: rgba(0, 0, 0, 0.8);
    --color-shadow-heavy: rgba(0, 0, 0, 1);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 30px;
    --font-size-4xl: 36px;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 20px;
    --spacing-2xl: 24px;
    --spacing-3xl: 32px;
    --spacing-4xl: 48px;
    --spacing-5xl: 64px;
    
    /* Border Radius */
    --radius-sm: 3px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;
    --radius-2xl: 16px;
    
    /* Shadows - Professional depth */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-xl: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-card: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-floating: 0 4px 16px rgba(0, 0, 0, 0.12);
    
    /* Transitions */
    --transition-fast: 0.1s ease;
    --transition-normal: 0.2s ease;
    --transition-slow: 0.3s ease;
    
    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

/* Base Styles */
html {
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Top Navigation */
.top-nav {
    position: sticky;
    top: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    z-index: var(--z-sticky);
    padding: 0 var(--spacing-xl);
    box-shadow: 0 1px 0 rgba(255, 255, 255, 0.05), 0 4px 20px rgba(0, 0, 0, 0.6);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-brand {
    display: flex;
    align-items: center;
    font-weight: 600;
    font-size: var(--font-size-lg);
    color: var(--color-text);
    gap: var(--spacing-sm);
}

.brand-icon {
    flex-shrink: 0;
}

.brand-text {
    font-weight: 700;
    color: white;
    letter-spacing: -0.01em;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-btn {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    background: none;
    border: none;
    border-radius: var(--radius-lg);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.nav-btn:hover {
    background: var(--color-hover);
    color: var(--color-text);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.nav-btn:active {
    background: var(--color-active);
    transform: translateY(0);
}



/* Main Content */
.main-content {
    min-height: calc(100vh - 64px);
}

/* Hero Section */
.idea-input-section {
    padding: var(--spacing-3xl) var(--spacing-xl);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.idea-input-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(120, 119, 198, 0.3) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 40% 80%, rgba(124, 58, 237, 0.2) 0%, transparent 50%);
    animation: float 8s ease-in-out infinite;
    pointer-events: none;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-10px) scale(1.02); }
}

/* Hero Container */
.input-container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
    padding: 0 var(--spacing-lg);
}

.input-header {
    margin-bottom: var(--spacing-4xl);
}

/* Hero Content */
.hero-content {
    max-width: 1000px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    padding: var(--spacing-sm) var(--spacing-lg);
    color: white;
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-md);
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    color: white;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
    letter-spacing: -0.02em;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.5;
    margin-bottom: var(--spacing-lg);
    font-weight: 400;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-feature {
    display: flex;
    align-items: center;
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-base);
    font-weight: 500;
}

.hero-feature::before {
    content: "✓";
    margin-right: var(--spacing-sm);
    color: #10b981;
    font-weight: bold;
    font-size: var(--font-size-lg);
}

/* Hero Input Section */
.hero-input-section {
    max-width: 700px;
    margin: var(--spacing-lg) auto 0 auto;
}

.hero-textarea {
    width: 100%;
    min-height: 100px;
    padding: var(--spacing-lg);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: white;
    background: rgba(255, 255, 255, 0.1);
    resize: vertical;
    transition: all var(--transition-slow);
    line-height: 1.6;
    font-weight: 400;
    backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    margin-bottom: var(--spacing-lg);
}

.hero-textarea:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 0 3px rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.hero-textarea::placeholder {
    color: rgba(255, 255, 255, 0.6);
    font-weight: 400;
    line-height: 1.6;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
}

.hero-options {
    display: flex;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    justify-content: center;
}

.hero-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.9);
    cursor: pointer;
    user-select: none;
    font-weight: 500;
}

.hero-checkbox input[type="checkbox"] {
    display: none;
}

.hero-checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
}

.hero-checkbox input[type="checkbox"]:checked + .hero-checkmark {
    background: #10b981;
    border-color: #10b981;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.hero-checkbox input[type="checkbox"]:checked + .hero-checkmark::after {
    content: '✓';
    color: white;
    font-size: 12px;
    font-weight: bold;
}

.hero-generate-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg) var(--spacing-3xl);
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
    color: white;
    border: none;
    border-radius: var(--radius-xl);
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(139, 92, 246, 0.3);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-width: 200px;
}

.hero-generate-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 0.5s;
}

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

.hero-generate-btn:hover {
    background: linear-gradient(135deg, #7c3aed 0%, #6d28d9 100%);
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(139, 92, 246, 0.4);
}

.hero-generate-btn:active {
    transform: translateY(-1px);
}

.hero-generate-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Legacy title styles for backward compatibility */
.input-title {
    display: none; /* Hide old title in favor of hero structure */
}

.input-subtitle {
    display: none; /* Hide old subtitle in favor of hero structure */
}

/* Removed CTA section - now integrated into hero */

.idea-input-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    padding: var(--spacing-xl);
    border: 1px solid rgba(255, 255, 255, 0.15);
    position: relative;
}

.idea-input-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.8), transparent);
}

.input-group {
    margin-bottom: var(--spacing-2xl);
}

.input-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: white;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.idea-textarea {
    width: 100%;
    min-height: 140px;
    padding: var(--spacing-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: white;
    background: rgba(255, 255, 255, 0.1);
    resize: vertical;
    transition: all var(--transition-slow);
    line-height: 1.6;
    font-weight: 400;
    backdrop-filter: blur(10px);
}

.idea-textarea:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.15);
}

.idea-textarea::placeholder {
    color: rgba(255, 255, 255, 0.6);
    font-weight: 400;
    line-height: 1.6;
}

.input-options {
    display: flex;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.option-group {
    display: flex;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.9);
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.05);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: #8b5cf6;
    border-color: #8b5cf6;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    color: white;
    font-size: 12px;
    font-weight: bold;
}

.generate-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-2xl);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border: none;
    border-radius: var(--radius-xl);
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.generate-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 0.5s;
}

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

.generate-btn:hover {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.generate-btn:active {
    transform: translateY(0);
}

.generate-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Examples Section - Hidden in hero view */
.examples-section {
    display: none; /* Hide examples in hero to save space */
}

.examples-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-2xl);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
}

.example-card {
    background: rgba(34, 34, 34, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.example-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, transparent, rgba(37, 99, 235, 0.05));
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.example-card:hover::before {
    opacity: 1;
}

.example-card:hover {
    border-color: var(--color-border-accent);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
    transform: translateY(-4px);
    background: rgba(34, 34, 34, 0.8);
}

.example-text {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text);
    position: relative;
    z-index: 1;
}

/* PRD Editor Section - Card-Based Layout */
.prd-editor-section {
    padding: var(--spacing-4xl) var(--spacing-xl);
    min-height: calc(100vh - 64px);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow-y: auto;
}

/* PRD Card-Based Layout */
.editor-container {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* PRD Header */
.prd-header {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.prd-title {
    color: white;
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin: 0 0 var(--spacing-sm) 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.prd-subtitle {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-lg);
    margin: 0;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

/* PRD Grid Layout */
.prd-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.prd-grid.two-column {
    grid-template-columns: 1fr 1fr;
}

.prd-grid.three-column {
    grid-template-columns: repeat(3, 1fr);
}

.prd-grid.full-width {
    grid-template-columns: 1fr;
}

/* PRD Cards */
.prd-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: var(--radius-lg);
    border: 2px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    overflow: hidden;
    transition: all 0.3s ease;
}

.prd-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.5);
}

.prd-card-header {
    background: linear-gradient(135deg, #5a67d8 0%, #667eea 100%);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    font-weight: 600;
    font-size: var(--font-size-base);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    position: relative;
}

.prd-card-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
}

.prd-card-content {
    padding: var(--spacing-lg);
    background: white;
    color: #1f2937;
    line-height: 1.6;
    min-height: 120px;
    font-size: var(--font-size-sm);
}

.prd-card-content p {
    margin: 0 0 var(--spacing-sm) 0;
}

.prd-card-content p:last-child {
    margin-bottom: 0;
}

.prd-card-content ul, .prd-card-content ol {
    margin: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
}

.prd-card-content li {
    margin-bottom: var(--spacing-xs);
}

/* Special card sizes */
.prd-card.large {
    grid-column: span 2;
}

.prd-card.full-width {
    grid-column: 1 / -1;
}

.prd-card.tall {
    .prd-card-content {
        min-height: 200px;
    }
}

/* Document toolbar for card view */
.document-toolbar {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.document-toolbar .toolbar-title {
    font-weight: 600;
    opacity: 0.9;
}

.document-toolbar .toolbar-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    opacity: 0.8;
}

.prd-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--spacing-4xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 2px solid var(--color-border);
}

.prd-title-group {
    flex: 1;
}

.prd-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    border: none;
    outline: none;
    background: transparent;
    width: 100%;
    line-height: 1.2;
    letter-spacing: -0.02em;
    font-family: 'Poppins', 'Inter', system-ui, -apple-system, sans-serif;
}

.prd-title:focus {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    margin: calc(-1 * var(--spacing-sm));
}

.prd-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    border: none;
    outline: none;
    background: transparent;
    width: 100%;
    line-height: 1.5;
    font-family: 'Poppins', 'Inter', system-ui, -apple-system, sans-serif;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border-light);
    margin-bottom: var(--spacing-4xl);
}

.prd-subtitle:focus {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
    margin: calc(-1 * var(--spacing-sm));
}

.prd-actions {
    margin-left: var(--spacing-lg);
}

.action-btn {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
}

/* Toolbar action buttons */
.document-toolbar .action-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs) var(--spacing-md);
}

.document-toolbar .action-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
}

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

.action-btn.secondary {
    border-color: var(--color-border);
}

/* Document Body */
.prd-blocks {
    margin-bottom: var(--spacing-3xl);
}

.document-body {
    line-height: 1.8;
    color: var(--color-text);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 15px;
    max-width: none;
    background: var(--color-bg-elevated);
    padding: var(--spacing-2xl) 0;
}

/* Professional document styling */
.document-body::before {
    content: '';
    display: block;
    height: 1px;
    background: linear-gradient(to right, transparent, #e5e7eb, transparent);
    margin-bottom: var(--spacing-3xl);
}

.document-body::after {
    content: '';
    display: block;
    height: 1px;
    background: linear-gradient(to right, transparent, #e5e7eb, transparent);
    margin-top: var(--spacing-4xl);
}

/* Document Sections */
.document-section {
    margin-bottom: var(--spacing-4xl);
    page-break-inside: avoid;
}

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

/* Section Headings */
.section-heading {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    margin-top: var(--spacing-3xl);
    line-height: 1.3;
    letter-spacing: -0.01em;
}

/* Main headings (h1) */
.document-section h1.section-heading {
    font-size: 1.875rem;
    border-bottom: 2px solid #e5e7eb;
    padding-bottom: var(--spacing-md);
    margin-top: 0;
    color: var(--color-primary);
}

/* Sub-headings (h2) */
.document-section h2.section-heading {
    font-size: 1.5rem;
    margin-top: var(--spacing-2xl);
}

/* Special styling for executive summary */
.document-section[data-section-type="executive"] h1.section-heading {
    background: linear-gradient(135deg, var(--color-primary) 0%, #1e40af 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    border-bottom: 3px solid var(--color-primary);
}

/* Section Content */
.section-content {
    margin-left: 0;
    color: #374151;
    line-height: 1.8;
}

/* Paragraph styling */
.section-content p {
    margin-bottom: var(--spacing-md);
    text-align: justify;
}

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

/* List styling */
.section-content ul {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
}

.section-content ol {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
}

.section-content li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.7;
}

/* Strong text */
.section-content strong {
    font-weight: 600;
    color: #111827;
}

/* Emphasis */
.section-content em {
    font-style: italic;
    color: #6b7280;
}

/* Nested headings within content */
.section-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: #111827;
    margin: var(--spacing-lg) 0 var(--spacing-sm) 0;
    line-height: 1.4;
}

.section-content h4 {
    font-size: 1rem;
    font-weight: 600;
    color: #374151;
    margin: var(--spacing-md) 0 var(--spacing-xs) 0;
    line-height: 1.4;
}

/* Tables */
.section-content table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-lg) 0;
}

.section-content th,
.section-content td {
    padding: var(--spacing-sm);
    text-align: left;
    border-bottom: 1px solid #e5e7eb;
}

.section-content th {
    background-color: #f9fafb;
    font-weight: 600;
    color: #111827;
}

/* Blockquotes */
.section-content blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    font-style: italic;
    color: #6b7280;
}

/* Code blocks */
.section-content code {
    background-color: #f3f4f6;
    padding: 2px 4px;
    border-radius: 3px;
    font-family: 'Monaco', 'Consolas', 'Courier New', monospace;
    font-size: 0.875rem;
    color: #1f2937;
}

/* Document styling takes precedence over old block styles */

/* Professional subtle animation effects */
.idea-input-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, 
        rgba(0, 0, 0, 0.1) 0%, 
        rgba(26, 26, 26, 0.05) 50%, 
        rgba(45, 45, 45, 0.02) 100%);
    z-index: 1;
    pointer-events: none;
}

.idea-input-section::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.03) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
    z-index: 2;
    pointer-events: none;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(-10px, -10px) rotate(90deg); }
    50% { transform: translate(10px, -20px) rotate(180deg); }
    75% { transform: translate(-10px, 10px) rotate(270deg); }
}

.input-container {
    position: relative !important;
    z-index: 3 !important;
    max-width: 700px !important;
}

.input-header {
    margin-bottom: var(--spacing-lg) !important;
}



.idea-input-card {
    background: rgba(255, 255, 255, 0.95) !important;
    backdrop-filter: blur(10px) !important;
    border: 1px solid rgba(255, 255, 255, 0.2) !important;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1) !important;
    margin-bottom: var(--spacing-xl) !important;
}

.examples-section {
    margin-top: var(--spacing-xl) !important;
}



/* Compact spacing */
.input-group {
    margin-bottom: var(--spacing-md) !important;
}

.input-options {
    margin: var(--spacing-md) 0 !important;
}

.examples-grid {
    gap: var(--spacing-md) !important;
}



.generate-btn:active {
    transform: translateY(0) !important;
}



/* Reduce overall vertical spacing */
.input-header {
    margin-bottom: var(--spacing-md) !important;
}

.idea-input-card {
    margin-bottom: var(--spacing-lg) !important;
}



/* Compact the examples section */
.examples-section {
    margin-top: var(--spacing-lg) !important;
}

.examples-grid {
    margin-top: var(--spacing-sm) !important;
}

/* Add Block Section - Hidden for document view */
.add-block-section {
    display: none;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    padding: var(--spacing-lg);
}

.modal-content {
    background: var(--color-bg-elevated);
    border-radius: var(--radius-2xl);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8);
    width: 100%;
    max-width: 550px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--color-border);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-2xl) var(--spacing-2xl) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    font-size: 20px;
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

.modal-body {
    padding: var(--spacing-2xl);
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-lg) var(--spacing-2xl) var(--spacing-2xl);
    border-top: 1px solid var(--color-border);
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-xl);
}

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

.form-input,
.form-select {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-bg-tertiary);
    transition: all var(--transition-normal);
}

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

.form-help {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-xs);
    line-height: 1.4;
}

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

.form-help a:hover {
    text-decoration: underline;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

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

.btn.primary:hover {
    background: #1e73cc;
}

.btn.secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    border-color: var(--color-border);
}

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

/* Export Options */
.export-options {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
}

.export-option {
    display: flex;
    align-items: center;
    padding: var(--spacing-lg);
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: left;
}

.export-option:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.export-info h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.export-info p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* Block Types */
.block-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.block-type {
    display: flex;
    align-items: flex-start;
    padding: var(--spacing-lg);
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-align: left;
}

.block-type:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.block-info h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
}

.block-info p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.4;
}



/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
}

.loading-content {
    text-align: center;
    max-width: 400px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top: 3px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-lg);
}

.loading-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.loading-subtitle {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: var(--z-tooltip);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--color-text);
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    animation: slideInRight 0.3s ease;
    max-width: 350px;
}

.toast.success {
    background: var(--color-success);
}

.toast.error {
    background: var(--color-error);
}

.toast.warning {
    background: var(--color-warning);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 0 var(--spacing-md);
    }
    
    .brand-icon {
        width: 24px;
        height: 24px;
    }
    
    .brand-text {
        font-size: var(--font-size-base);
    }
    
    .nav-btn span {
        font-size: var(--font-size-xs);
    }
    
    .idea-input-section {
        padding: var(--spacing-2xl) var(--spacing-md);
        min-height: 100vh;
    }
    
    .input-container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: clamp(2rem, 4vw, 2.8rem);
        margin-bottom: var(--spacing-sm);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-md);
    }
    
    .hero-input-section {
        max-width: 90%;
        padding: 0 var(--spacing-sm);
        margin-top: var(--spacing-md);
    }
    
    .hero-textarea {
        padding: var(--spacing-md);
        min-height: 80px;
        margin-bottom: var(--spacing-md);
    }
    
    .hero-options {
        gap: var(--spacing-md);
        flex-direction: row;
        justify-content: center;
    }
    
    .hero-generate-btn {
        width: 100%;
        max-width: 280px;
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .hero-features {
        gap: var(--spacing-lg);
        margin-bottom: var(--spacing-md);
    }
    
    .idea-input-card {
        padding: var(--spacing-2xl);
    }
    
    .input-options {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .examples-grid {
        grid-template-columns: 1fr;
    }
    
    .prd-editor-section {
        padding: var(--spacing-2xl) var(--spacing-md);
    }
    
    .prd-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-lg);
    }
    
    .prd-title {
        font-size: var(--font-size-3xl);
    }
    
    .prd-actions {
        margin-left: 0;
        width: 100%;
    }
    
    .action-btn {
        width: 100%;
        justify-content: center;
    }
    
    .modal-content {
        margin: var(--spacing-md);
        max-width: none;
    }
    
    .block-types {
        grid-template-columns: 1fr;
    }
    
    .export-options {
        grid-template-columns: 1fr;
    }
    

    
    .toast-container {
        left: var(--spacing-md);
        right: var(--spacing-md);
        top: var(--spacing-md);
    }
    
    .toast {
        max-width: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: clamp(2rem, 4vw, 2.5rem);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
    
    .hero-textarea {
        padding: var(--spacing-md);
        min-height: 90px;
    }
    
    .hero-generate-btn {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-base);
    }
    
    .prd-title {
        font-size: var(--font-size-2xl);
    }
    
    .idea-input-card {
        padding: var(--spacing-lg);
    }
    
    .modal-header,
    .modal-body,
    .modal-footer {
        padding: var(--spacing-lg);
    }
}

/* Print Styles */
@media print {
    .top-nav,
    .prd-actions,
    .block-actions,
    .add-block-section {
        display: none !important;
    }
    
    .prd-editor-section {
        padding: 0;
    }
    
    .prd-header {
        border-bottom: 2px solid var(--color-text);
        margin-bottom: var(--spacing-2xl);
        page-break-after: avoid;
    }
    
    .prd-block {
        page-break-inside: avoid;
        margin-bottom: var(--spacing-xl);
    }
    
    .block-content {
        background: transparent !important;
        padding: 0 !important;
        margin: 0 !important;
    }
}

/* Focus States for Accessibility */
.nav-btn:focus,
.generate-btn:focus,
.hero-generate-btn:focus,
.action-btn:focus,
.btn:focus,
.export-option:focus,
.block-type:focus {
    outline: 2px solid rgba(255, 255, 255, 0.6);
    outline-offset: 2px;
}

.form-input:focus,
.form-select:focus,
.idea-textarea:focus,
.hero-textarea:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.1);
}

/* Selection */
::selection {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-tertiary);
}