/* ========================================
   HaqotePad Landing Page - Main Styles
   Bootstrap 5.3.3 Compatible - Fully Responsive
   ======================================== */

/* Ensure no horizontal overflow */
html,
body {
    overflow-x: hidden;
    max-width: 100vw;
    width: 100%;
}

/* Prevent all elements from causing horizontal overflow */
* {
    max-width: 100%;
}

/* Container and row fixes for mobile */
.container,
.container-fluid {
    overflow-x: hidden;
}

.row {
    margin-left: 0;
    margin-right: 0;
}

/* Prevent text overflow */
h1, h2, h3, h4, h5, h6, p, span, div {
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* CSS Variables - HaqotePad Color Palette */
:root {
    /* Primary Colors */
    --primary-blue: #2563EB;
    --primary-blue-dark: #1E40AF;
    --primary-blue-light: #3B82F6;
    
    /* Category Colors */
    --color-ideas: #FCD34D;
    --color-ideas-light: #FEF3C7;
    --color-personal: #FB923C;
    --color-personal-light: #FED7AA;
    --color-research: #34D399;
    --color-research-light: #D1FAE5;
    --color-work: #F87171;
    --color-work-light: #FEE2E2;
    
    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-gray-50: #F9FAFB;
    --color-gray-100: #F3F4F6;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;
    
    /* Success/Error Colors */
    --color-success: #10B981;
    --color-error: #EF4444;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

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

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--color-gray-800);
    background-color: var(--color-gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-gray-100);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-blue-dark);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* Bootstrap container enhancement - already defined by Bootstrap */
/* Custom max-width handled by Bootstrap's container class */

/* Navigation - Bootstrap navbar enhancements */
.navbar {
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.navbar-brand.logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-gray-900);
    transition: transform var(--transition-normal);
    white-space: nowrap;
}

.navbar-brand.logo:hover {
    transform: scale(1.05);
    color: var(--color-gray-900);
}

.navbar-brand.logo img {
    transition: transform var(--transition-normal);
    object-fit: contain;
}

.navbar-brand.logo:hover img {
    transform: rotateY(180deg);
}

.nav-link {
    font-weight: 500;
    color: var(--color-gray-600) !important;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary-blue) !important;
}

/* Hero Section */
.hero {
    position: relative;
    padding-top: 100px;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-title {
    line-height: 1.1;
    color: var(--color-gray-900);
}

.highlight {
    color: var(--primary-blue);
    position: relative;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.hero-buttons {
    margin-top: var(--spacing-lg);
}

.hero-buttons .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* Hero Card Demo */
.hero-card-demo {
    position: relative;
    animation: float 6s ease-in-out infinite;
}

.demo-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-xl);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.demo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.card-category {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
}

.card-category.ideas {
    background: var(--color-ideas-light);
    color: #92400E;
}

.card-date {
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.card-excerpt {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.card-footer {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    align-items: center;
}

.card-tag {
    padding: 0.25rem 0.625rem;
    background: var(--color-gray-100);
    color: var(--color-gray-700);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.card-tag:hover {
    background: var(--primary-blue);
    color: var(--color-white);
    transform: translateY(-2px);
}

.card-words {
    margin-left: auto;
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* Hero Background */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.5;
    animation: blobMove 20s ease-in-out infinite;
}

.blob-1 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #2563EB 0%, #3B82F6 100%);
    top: -200px;
    right: -100px;
}

.blob-2 {
    width: 350px;
    height: 350px;
    background: linear-gradient(135deg, #FCD34D 0%, #F59E0B 100%);
    bottom: -150px;
    left: -100px;
    animation-delay: -10s;
}

@keyframes blobMove {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(50px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-50px, 50px) scale(0.9);
    }
}

/* Button enhancements - Bootstrap buttons with custom effects */
.btn {
    position: relative;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

/* Primary button hover effects */
.btn-primary:hover,
.btn-outline-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn i {
    position: relative;
    z-index: 1;
}

/* Section enhancements */
.section-header {
    margin-bottom: var(--spacing-3xl);
}

.section-title {
    color: var(--color-gray-900);
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    color: var(--color-gray-600);
    font-size: 1.125rem;
}

/* Features grid handled by Bootstrap row and col classes */

.feature-card {
    background: var(--color-gray-50);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-blue);
    background: var(--color-white);
}

.feature-icon {
    margin-bottom: var(--spacing-lg);
    transition: transform var(--transition-normal);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-icon i {
    background: linear-gradient(135deg, currentColor 0%, currentColor 100%);
    -webkit-background-clip: text;
    background-clip: text;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* How It Works - Grid handled by Bootstrap */

.step-number {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: var(--primary-blue);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.step:hover .step-number {
    transform: scale(1.1) rotate(360deg);
    background: var(--primary-blue-dark);
}

.step-title {
    color: var(--color-gray-900);
}

.step-description {
    color: var(--color-gray-600);
    line-height: 1.7;
}

/* App Preview Section */
.app-preview {
    background: var(--color-white);
}

/* Masonry Grid Layout - Responsive */
.masonry-grid {
    margin: 0 auto;
    max-width: 100%;
}

.masonry-item {
    background: var(--color-gray-50);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.masonry-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.preview-image-placeholder {
    background: linear-gradient(135deg, #EEF2FF 0%, #E0E7FF 100%);
    padding: var(--spacing-xl);
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-preview .preview-image-placeholder {
    min-height: 400px;
}

/* Image Container Styles */
.preview-image-container {
    width: 100%;
    overflow: hidden;
    background: var(--color-gray-100);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    aspect-ratio: 16/9;
}

.preview-image {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    object-position: center;
    transition: transform var(--transition-slow);
}

.preview-item:hover .preview-image {
    transform: scale(1.05);
}

.main-preview .preview-image-container {
    aspect-ratio: 21/9;
    max-height: 600px;
}

.main-preview .preview-image {
    object-fit: contain;
    background: var(--color-gray-50);
}

.placeholder-content {
    display: flex;
    gap: var(--spacing-lg);
    width: 100%;
    height: 100%;
}

.placeholder-sidebar {
    width: 80px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.placeholder-logo {
    width: 100%;
    height: 40px;
    background: var(--primary-blue);
    border-radius: var(--radius-sm);
}

.placeholder-menu-item {
    width: 100%;
    height: 30px;
    background: rgba(37, 99, 235, 0.2);
    border-radius: var(--radius-sm);
}

.placeholder-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.placeholder-header {
    height: 50px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: var(--radius-md);
}

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

.placeholder-card {
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-md);
    min-height: 150px;
}

/* AI Preview Styles */
.ai-preview {
    background: linear-gradient(135deg, #DBEAFE 0%, #E0E7FF 100%);
    flex-direction: column;
    gap: var(--spacing-md);
    justify-content: center;
}

.ai-chat-bubble, .ai-response {
    background: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    max-width: 80%;
}

.ai-chat-bubble {
    align-self: flex-start;
}

.ai-response {
    align-self: flex-end;
}

.bubble-line {
    height: 12px;
    background: var(--color-gray-200);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
}

.bubble-line.short {
    width: 60%;
}

/* Categories Preview */
.categories-preview {
    background: var(--color-white);
    flex-direction: column;
    gap: var(--spacing-md);
    padding: var(--spacing-2xl) var(--spacing-xl);
}

.category-tag {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 600;
    width: 100%;
    text-align: center;
}

.ideas-tag {
    background: var(--color-ideas-light);
    color: #92400E;
}

.personal-tag {
    background: var(--color-personal-light);
    color: #9A3412;
}

.research-tag {
    background: var(--color-research-light);
    color: #065F46;
}

.work-tag {
    background: var(--color-work-light);
    color: #991B1B;
}

.preview-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin: var(--spacing-md) var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.preview-description {
    color: var(--color-gray-600);
    margin: 0 var(--spacing-lg) var(--spacing-lg);
}

/* CTA Section - using Bootstrap bg-primary */
.cta-title {
    color: var(--color-white);
}

.cta-description {
    color: rgba(255, 255, 255, 0.95);
}

/* Feedback Section - Grid handled by Bootstrap */
.feedback-info h3 {
    color: var(--color-gray-900);
}

.feedback-list li {
    color: var(--color-gray-700);
    line-height: 1.6;
}

/* Form Preview */
.form-preview {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.form-preview-header {
    background: var(--color-gray-100);
    padding: var(--spacing-md);
    display: flex;
    gap: var(--spacing-sm);
}

.form-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--color-gray-300);
}

.form-preview-content {
    padding: var(--spacing-xl);
}

.form-preview-content h4 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-sm);
}

.form-preview-content p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
}

.form-fields {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.form-field {
    height: 40px;
    background: var(--color-gray-100);
    border-radius: var(--radius-md);
}

.form-field.large {
    height: 100px;
}

/* Footer */
.footer {
    background: var(--color-gray-900);
    color: var(--color-gray-300);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.footer-logo img {
    flex-shrink: 0;
}

.footer-description {
    line-height: 1.7;
}

.footer-heading {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--primary-blue-light);
}

.footer-text {
    color: var(--color-gray-400);
    line-height: 1.7;
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-gray-800);
}

.footer-bottom-links a {
    color: var(--color-gray-400);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-bottom-links a:hover {
    color: var(--primary-blue-light);
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-5px) rotate(360deg);
}

.back-to-top i {
    font-size: 1.5rem;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

/* Additional Enhancements */
.section-title {
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-blue-light));
    border-radius: 2px;
}

/* Smooth scrolling for all elements */
* {
    scroll-behavior: smooth;
}

/* Focus styles for accessibility */
*:focus-visible {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}