/* ================================
   G Tech Group - JPG PNG Converter
   Style Sheet v3.1 - Updated Edition
   ================================ */

/* ====================
   ROOT VARIABLES & CUSTOM PROPERTIES
   ==================== */
:root {
    /* Brand Colors */
    --primary-color: #5e91d0;
    --secondary-color: #264573;
    --text-color: #000222;
    --white: #ffffff;
    --light-gray: #f8f9fa;
    --medium-gray: #e9ecef;
    --dark-gray: #495057;
    --success: #28a745;
    --warning: #ffc107;
    --danger: #dc3545;
    --info: #17a2b8;
    
    /* Glass Morphism */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.18);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.1);
    
    /* Responsive Spacing with clamp() */
    --spacing-xs: clamp(0.25rem, 1vw, 0.5rem);
    --spacing-sm: clamp(0.5rem, 2vw, 1rem);
    --spacing-md: clamp(1rem, 3vw, 1.5rem);
    --spacing-lg: clamp(1.5rem, 4vw, 2rem);
    --spacing-xl: clamp(2rem, 5vw, 3rem);
    --spacing-xxl: clamp(3rem, 6vw, 4rem);
    
    /* Responsive Font Sizes */
    --fs-xs: clamp(0.75rem, 1.5vw, 0.875rem);
    --fs-sm: clamp(0.875rem, 2vw, 1rem);
    --fs-base: clamp(1rem, 2.5vw, 1.125rem);
    --fs-lg: clamp(1.125rem, 3vw, 1.25rem);
    --fs-xl: clamp(1.25rem, 3.5vw, 1.5rem);
    --fs-2xl: clamp(1.5rem, 4vw, 2rem);
    --fs-3xl: clamp(2rem, 5vw, 2.5rem);
    --fs-4xl: clamp(2.5rem, 6vw, 3rem);
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 2, 34, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 2, 34, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 2, 34, 0.16);
    --shadow-xl: 0 16px 48px rgba(0, 2, 34, 0.2);
    --shadow-glow: 0 0 30px rgba(94, 145, 208, 0.3);
    --shadow-inset: inset 0 2px 4px rgba(0, 2, 34, 0.06);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    --transition-bounce: 600ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Container Widths */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    
    /* Z-index Scale */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal-backdrop: 1040;
    --z-modal: 1050;
    --z-popover: 1060;
    --z-tooltip: 1070;
    --z-notification: 1080;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Lato', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: var(--fs-base);
    font-weight: 400;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow-x: hidden;
    opacity: 0;
    transition: opacity 0.6s ease;
}

body.loaded {
    opacity: 1;
}

/* Background Pattern */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at top left, rgba(94, 145, 208, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(38, 69, 115, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* ====================
   TYPOGRAPHY
   ==================== */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-color);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--fs-4xl); font-weight: 700; }
h2 { font-size: var(--fs-3xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }
h5 { font-size: var(--fs-base); }
h6 { font-size: var(--fs-sm); }

p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

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

a:hover {
    color: var(--secondary-color);
}

strong {
    font-weight: 600;
    color: inherit;
}

/* ====================
   ACCESSIBILITY
   ==================== */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: var(--z-tooltip);
    text-decoration: none;
    border-radius: 0 0 var(--radius-md) 0;
}

.skip-link:focus {
    top: 0;
}

.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;
}

/* ====================
   LAYOUT
   ==================== */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ====================
   PRELOADER
   ==================== */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    display: grid;
    place-items: center;
    z-index: var(--z-notification);
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hide {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader-content {
    text-align: center;
}

.preloader-logo {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    animation: pulse 1.5s ease-in-out infinite;
}

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

/* ====================
   HEADER
   ==================== */
.site-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    transition: all var(--transition-normal);
}

.site-header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    min-height: 60px;
}

.logo {
    display: inline-flex;
    align-items: center;
    transition: transform var(--transition-normal);
}

.logo:hover {
    transform: scale(1.05);
}

.logo img {
    height: clamp(35px, 5vw, 45px);
    width: auto;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    padding: var(--spacing-xs);
    cursor: pointer;
    z-index: 101;
}

.hamburger-line {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--text-color);
    margin: 5px 0;
    transition: all var(--transition-normal);
    border-radius: 2px;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* Navigation */
.main-nav ul {
    display: flex;
    list-style: none;
    gap: clamp(0.5rem, 2vw, 1.5rem);
    align-items: center;
}

.main-nav a {
    font-size: var(--fs-sm);
    font-weight: 500;
    color: var(--text-color);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transform: translateX(-50%);
    transition: width var(--transition-normal);
}

.main-nav a:hover {
    color: var(--primary-color);
}

.main-nav a:hover::after {
    width: 80%;
}

/* ====================
   HERO SECTION
   ==================== */
.hero {
    background: linear-gradient(-45deg, #5e91d0, #264573, #3a6ba8, #1e4b8a);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
    color: var(--white);
    padding: var(--spacing-xxl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

.hero-title {
    font-size: var(--fs-4xl);
    color: var(--white);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: var(--fs-lg);
    opacity: 0.95;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s ease-out 0.2s both;
    line-height: 1.6;
}

.hero-subtitle strong {
    color: var(--white);
    font-weight: 700;
}

.hero-features {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-feature {
    font-size: var(--fs-sm);
    opacity: 0.9;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

/* ====================
   CONVERTER SECTION
   ==================== */
.converter-section {
    padding: var(--spacing-xxl) 0;
    background: var(--light-gray);
    position: relative;
}

.converter-wrapper {
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: clamp(1.5rem, 4vw, 2.5rem);
    box-shadow: var(--shadow-lg);
    animation: fadeIn 0.6s ease-out;
    position: relative;
    overflow: hidden;
}

/* Upload Area */
.upload-area {
    border: 3px dashed var(--medium-gray);
    border-radius: var(--radius-lg);
    padding: clamp(2rem, 5vw, 3rem) clamp(1rem, 3vw, 2rem);
    text-align: center;
    transition: all var(--transition-normal);
    cursor: pointer;
    background: linear-gradient(135deg, var(--light-gray) 0%, rgba(94, 145, 208, 0.05) 100%);
    position: relative;
    overflow: hidden;
}

.upload-area:hover,
.upload-area:focus-within {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(94, 145, 208, 0.05) 0%, rgba(94, 145, 208, 0.1) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.upload-area.drag-over {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(94, 145, 208, 0.1) 0%, rgba(94, 145, 208, 0.2) 100%);
    transform: scale(1.01);
    box-shadow: var(--shadow-glow);
}

/* Upload Processing */
.upload-processing {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 10;
}

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

.upload-icon {
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
    animation: float 3s ease-in-out infinite;
}

.upload-title {
    font-size: var(--fs-xl);
    margin-bottom: var(--spacing-sm);
}

.upload-text {
    font-size: var(--fs-base);
    margin-bottom: var(--spacing-xs);
}

.browse-button {
    background: none;
    border: none;
    color: var(--primary-color);
    font-weight: 600;
    cursor: pointer;
    text-decoration: underline;
    font-size: inherit;
    font-family: inherit;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.browse-button:hover {
    color: var(--secondary-color);
    background: rgba(94, 145, 208, 0.1);
}

.upload-info {
    font-size: var(--fs-sm);
    color: var(--dark-gray);
    margin: 0;
}

.file-input {
    position: absolute;
    left: -9999px;
}

/* Compression Settings */
.compression-settings {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--light-gray);
    border-radius: var(--radius-md);
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

.settings-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    font-size: var(--fs-lg);
    color: var(--secondary-color);
    position: relative;
}

.settings-title h3 {
    margin: 0;
}

.settings-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.compression-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
}

.compression-option {
    cursor: pointer;
    position: relative;
}

.compression-radio {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.option-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--white);
    border: 2px solid var(--medium-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-bounce);
    text-align: center;
    min-height: 120px;
    justify-content: center;
}

.option-icon {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: var(--spacing-xs);
    transition: transform var(--transition-normal);
}

.option-title {
    font-size: var(--fs-base);
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.25rem;
    transition: color var(--transition-normal);
}

.option-desc {
    font-size: var(--fs-xs);
    color: var(--dark-gray);
    transition: color var(--transition-normal);
}

.compression-radio:checked ~ .option-card {
    border-color: var(--primary-color);
    background: var(--primary-color);
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.compression-radio:checked ~ .option-card .option-title,
.compression-radio:checked ~ .option-card .option-desc {
    color: var(--white);
}

.compression-radio:checked ~ .option-card .option-icon {
    transform: scale(1.2) rotate(10deg);
}

.compression-option:hover .option-card {
    border-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* Progress Bar */
.progress-container {
    margin-top: var(--spacing-lg);
    animation: fadeIn 0.3s ease-out;
}

.progress-bar {
    height: 8px;
    background: var(--medium-gray);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    width: 0%;
    transition: width var(--transition-normal);
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: shimmer 1.5s infinite;
}

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

.progress-text {
    text-align: center;
    color: var(--dark-gray);
    font-size: var(--fs-sm);
    font-weight: 600;
}

/* ====================
   RESULTS AREA
   ==================== */
.results-area {
    margin-top: var(--spacing-lg);
    animation: fadeIn 0.5s ease-out;
}

.results-title {
    text-align: center;
    color: var(--success);
    margin-bottom: var(--spacing-md);
    font-size: var(--fs-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.results-title svg {
    animation: checkmark 0.5s ease-out;
}

@keyframes checkmark {
    0% { transform: scale(0) rotate(-45deg); }
    50% { transform: scale(1.2) rotate(10deg); }
    100% { transform: scale(1) rotate(0); }
}

/* Conversion Statistics */
.conversion-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--light-gray);
    border-radius: var(--radius-md);
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-label {
    display: block;
    font-size: var(--fs-sm);
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
}

.stat-value {
    display: block;
    font-size: var(--fs-xl);
    font-weight: 700;
    color: var(--primary-color);
}

/* Batch Actions */
.batch-actions {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.btn-download-all,
.btn-convert-more,
.btn-clear-all {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--fs-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    font-family: inherit;
}

.btn-download-all {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
}

.btn-download-all:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-convert-more {
    background: var(--success);
    color: var(--white);
}

.btn-convert-more:hover {
    background: #218838;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-clear-all {
    background: var(--white);
    color: var(--danger);
    border: 2px solid var(--danger);
}

.btn-clear-all:hover {
    background: var(--danger);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Results Grid */
.results-grid {
    display: grid;
    gap: var(--spacing-md);
}

.result-item {
    background: var(--white);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
    cursor: pointer;
    opacity: 0;
    animation: fadeInUp 0.5s ease-out forwards;
}

.result-item.visible {
    opacity: 1;
}

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

.result-item.selected {
    background: rgba(94, 145, 208, 0.05);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.result-item.removing {
    animation: fadeOutRight 0.3s ease-out forwards;
}

@keyframes fadeOutRight {
    to {
        opacity: 0;
        transform: translateX(20px);
    }
}

.result-preview {
    flex: 0 0 80px;
    height: 80px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--light-gray);
    display: grid;
    place-items: center;
    position: relative;
}

.result-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.preview-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: grid;
    place-items: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.result-preview:hover .preview-overlay {
    opacity: 1;
}

.preview-overlay svg {
    color: var(--white);
}

/* Hover Preview */
.hover-preview {
    position: fixed;
    z-index: var(--z-tooltip);
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-xs);
    max-width: 300px;
    max-height: 300px;
    pointer-events: none;
    animation: fadeIn 0.2s ease-out;
}

.hover-preview img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

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

.result-filename {
    font-weight: 600;
    color: var(--secondary-color);
    font-size: var(--fs-base);
    margin-bottom: var(--spacing-xs);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.result-size {
    font-size: var(--fs-sm);
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
}

.savings {
    color: var(--success);
    font-weight: 600;
}

.size-increase {
    color: var(--warning);
    font-weight: 600;
}

.result-compression {
    font-size: var(--fs-sm);
    color: var(--dark-gray);
}

.compression-badge {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    background: var(--primary-color);
    color: var(--white);
    border-radius: var(--radius-sm);
    font-size: var(--fs-xs);
    font-weight: 600;
}

.compression-badge.compression-low {
    background: var(--success);
}

.compression-badge.compression-medium {
    background: var(--primary-color);
}

.compression-badge.compression-high {
    background: var(--warning);
}

/* Result Actions */
.result-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-direction: column;
}

.btn-download,
.btn-remove {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border: none;
    border-radius: var(--radius-sm);
    font-size: var(--fs-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
}

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

.btn-download:hover {
    background: var(--secondary-color);
    transform: scale(1.05);
}

.btn-remove {
    background: transparent;
    color: var(--danger);
    border: 1px solid var(--danger);
}

.btn-remove:hover {
    background: var(--danger);
    color: var(--white);
}

/* Comparison Mode */
.results-grid.comparison-mode {
    grid-template-columns: 1fr;
}

.comparison-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: var(--spacing-md);
    align-items: center;
    width: 100%;
}

.comparison-side {
    text-align: center;
}

.comparison-label {
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--dark-gray);
    margin-bottom: var(--spacing-xs);
}

.comparison-side.original .comparison-label {
    color: var(--secondary-color);
}

.comparison-side.converted .comparison-label {
    color: var(--primary-color);
}

.comparison-image {
    background: var(--light-gray);
    border-radius: var(--radius-md);
    overflow: hidden;
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    border: 2px solid var(--medium-gray);
}

.comparison-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.comparison-size {
    font-size: var(--fs-sm);
    color: var(--dark-gray);
    margin-top: var(--spacing-xs);
}

.comparison-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

.comparison-divider svg {
    width: 32px;
    height: 32px;
    animation: pulse 2s ease-in-out infinite;
}

/* Comparison Toggle */
.comparison-toggle {
    text-align: center;
    margin-top: var(--spacing-lg);
}

.toggle-switch {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
}

.toggle-switch input[type="checkbox"] {
    width: 48px;
    height: 24px;
    appearance: none;
    background: var(--medium-gray);
    border-radius: var(--radius-full);
    position: relative;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.toggle-switch input[type="checkbox"]::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--white);
    top: 2px;
    left: 2px;
    transition: transform var(--transition-fast);
}

.toggle-switch input[type="checkbox"]:checked {
    background: var(--primary-color);
}

.toggle-switch input[type="checkbox"]:checked::before {
    transform: translateX(24px);
}

.toggle-label {
    font-size: var(--fs-sm);
    color: var(--dark-gray);
}

/* ====================
   INFO SECTION
   ==================== */
.info-section {
    padding: var(--spacing-xxl) 0;
    background: var(--white);
}

.info-content {
    max-width: 800px;
    margin: 0 auto;
}

.info-content p {
    font-size: var(--fs-base);
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
}

.info-content h3 {
    color: var(--secondary-color);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.info-item {
    background: var(--light-gray);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
    transition: all var(--transition-normal);
}

.info-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
}

.info-item h4 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
}

.info-item ul {
    list-style: none;
    padding: 0;
}

.info-item li {
    font-size: var(--fs-sm);
    color: var(--dark-gray);
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: var(--spacing-xs);
}

.info-item li::before {
    content: "✅";
    position: absolute;
    left: 0;
}

/* ====================
   FEATURES SECTION
   ==================== */
.features {
    padding: var(--spacing-xxl) 0;
    background: var(--light-gray);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-size: var(--fs-3xl);
    color: var(--secondary-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    text-align: center;
    transition: all var(--transition-normal);
    border: 1px solid transparent;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.feature-card h3 {
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

.feature-card p {
    font-size: var(--fs-sm);
    color: var(--dark-gray);
}

/* ====================
   FORMATS SECTION
   ==================== */
.formats-section {
    padding: var(--spacing-xxl) 0;
    background: var(--white);
}

.formats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    max-width: 800px;
    margin: 0 auto;
}

.format-card {
    background: var(--light-gray);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-top: 4px solid var(--primary-color);
    transition: all var(--transition-normal);
}

.format-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.format-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-xs);
}

.format-card p {
    font-size: var(--fs-sm);
    color: var(--dark-gray);
    margin-bottom: var(--spacing-md);
}

.format-card ul {
    list-style: none;
    padding: 0;
}

.format-card li {
    font-size: var(--fs-sm);
    color: var(--text-color);
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--medium-gray);
}

.format-card li:last-child {
    border-bottom: none;
}

/* ====================
   COMPARISON TABLE SECTION
   ==================== */
.comparison-section {
    padding: var(--spacing-xxl) 0;
    background: var(--light-gray);
}

.comparison-wrapper {
    overflow-x: auto;
    margin-top: var(--spacing-lg);
}

.comparison-table {
    width: 100%;
    min-width: 600px;
    background: var(--white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.comparison-table thead {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
}

.comparison-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    font-size: var(--fs-sm);
}

.comparison-table tbody tr {
    border-bottom: 1px solid var(--light-gray);
    transition: background var(--transition-fast);
}

.comparison-table tbody tr:hover {
    background: var(--light-gray);
}

.comparison-table tbody tr:last-child {
    border-bottom: none;
}

.comparison-table td,
.comparison-table th[scope="row"] {
    padding: var(--spacing-md);
    font-size: var(--fs-sm);
}

.comparison-table th[scope="row"] {
    font-weight: 600;
    color: var(--secondary-color);
}

.comparison-summary {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(94, 145, 208, 0.1);
    border-left: 4px solid var(--primary-color);
    border-radius: var(--radius-sm);
}

/* ====================
   GUARANTEES SECTION
   ==================== */
.guarantees-section {
    padding: var(--spacing-xxl) 0;
    background: var(--white);
}

.guarantee-badges {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.badge {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--light-gray);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.badge:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    background: var(--white);
}

.badge-icon {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.badge-icon svg {
    width: 48px;
    height: 48px;
}

.badge h3 {
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
    font-size: var(--fs-lg);
}

.badge p {
    font-size: var(--fs-sm);
    color: var(--dark-gray);
}

/* ====================
   HOW IT WORKS
   ==================== */
.how-it-works {
    padding: var(--spacing-xxl) 0;
    background: var(--light-gray);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    counter-reset: step-counter;
}

.step {
    text-align: center;
    padding: var(--spacing-md);
    position: relative;
    counter-increment: step-counter;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border-radius: 50%;
    display: grid;
    place-items: center;
    font-size: var(--fs-xl);
    font-weight: 700;
    margin: 0 auto var(--spacing-md);
    font-family: 'Poppins', sans-serif;
    box-shadow: var(--shadow-md);
}

.step h3 {
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

.step p {
    font-size: var(--fs-sm);
    color: var(--dark-gray);
}

/* ====================
   USE CASES SECTION
   ==================== */
.use-cases {
    padding: var(--spacing-xxl) 0;
    background: var(--white);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.use-case {
    background: var(--light-gray);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.use-case:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.use-case h3 {
    font-size: var(--fs-lg);
    margin-bottom: var(--spacing-sm);
    color: var(--secondary-color);
}

.use-case p {
    font-size: var(--fs-sm);
    color: var(--dark-gray);
}

/* ====================
   WHY US SECTION
   ==================== */
.why-us-section {
    padding: var(--spacing-xxl) 0;
    background: var(--light-gray);
}

.competitors-comparison {
    overflow-x: auto;
    margin-top: var(--spacing-lg);
}

.competitors-comparison .comparison-table th.highlight,
.competitors-comparison .comparison-table td.highlight {
    background: rgba(94, 145, 208, 0.1);
    color: var(--primary-color);
    font-weight: 600;
}

.why-us-summary {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.why-us-summary p {
    font-size: var(--fs-base);
    color: var(--text-color);
}

/* ====================
   BEST PRACTICES SECTION (NEW)
   ==================== */
.best-practices-section {
    padding: var(--spacing-xxl) 0;
    background: var(--white);
}

.practices-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.practice-card {
    background: var(--light-gray);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.practice-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.practice-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    background: var(--white);
}

.practice-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    display: block;
    text-align: center;
}

.practice-card h3 {
    color: var(--secondary-color);
    font-size: var(--fs-lg);
    margin-bottom: var(--spacing-sm);
}

.practice-card p {
    font-size: var(--fs-sm);
    color: var(--dark-gray);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.practice-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.practice-card li {
    font-size: var(--fs-sm);
    color: var(--text-color);
    padding: var(--spacing-xs) 0;
    padding-left: 1.5rem;
    position: relative;
}

.practice-card li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

/* ====================
   TROUBLESHOOTING SECTION
   ==================== */
.troubleshooting-section {
    padding: var(--spacing-xxl) 0;
    background: var(--light-gray);
}

.problems-accordion {
    max-width: 800px;
    margin: 0 auto;
}

.problem-item {
    background: var(--white);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.problem-item[open] {
    box-shadow: var(--shadow-md);
}

.problem-item summary {
    padding: var(--spacing-md);
    cursor: pointer;
    font-weight: 600;
    color: var(--secondary-color);
    background: var(--light-gray);
    transition: all var(--transition-fast);
    user-select: none;
    list-style: none;
    position: relative;
    padding-right: calc(var(--spacing-md) * 2);
}

.problem-item summary::after {
    content: '+';
    position: absolute;
    right: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--fs-xl);
    color: var(--primary-color);
    transition: transform var(--transition-fast);
}

.problem-item[open] summary::after {
    transform: translateY(-50%) rotate(45deg);
}

.problem-item summary:hover {
    background: var(--medium-gray);
}

.problem-solution {
    padding: var(--spacing-md);
    color: var(--dark-gray);
    font-size: var(--fs-sm);
    line-height: 1.7;
}

.problem-solution strong {
    color: var(--secondary-color);
}

.problem-solution ul {
    margin-top: var(--spacing-sm);
    padding-left: var(--spacing-md);
}

.problem-solution li {
    margin-bottom: var(--spacing-xs);
}

/* ====================
   FAQ SECTION
   ==================== */
.faq {
    padding: var(--spacing-xxl) 0;
    background: var(--white);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: var(--spacing-md);
}

.faq-item {
    background: var(--light-gray);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--primary-color);
    transition: all var(--transition-normal);
}

.faq-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-md);
    background: var(--white);
}

.faq-item h3 {
    font-size: var(--fs-lg);
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

.faq-item p {
    font-size: var(--fs-sm);
    color: var(--dark-gray);
    line-height: 1.7;
}

/* ====================
   NEWSLETTER SECTION
   ==================== */
.newsletter-section {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--light-gray), rgba(94, 145, 208, 0.05));
}

.newsletter-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-lg);
}

.newsletter-subtitle {
    text-align: center;
    font-size: var(--fs-base);
    color: var(--dark-gray);
    margin-bottom: var(--spacing-lg);
}

.newsletter-form {
    margin-bottom: var(--spacing-lg);
}

.form-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.email-input {
    flex: 1;
    padding: var(--spacing-md);
    border: 2px solid var(--medium-gray);
    border-radius: var(--radius-md);
    font-size: var(--fs-base);
    font-family: inherit;
    transition: all var(--transition-fast);
}

.email-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.submit-button {
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--fs-base);
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-normal);
    font-family: inherit;
}

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

.form-footer {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.form-footer p {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--fs-sm);
    color: var(--dark-gray);
    margin: 0;
}

.form-footer svg {
    color: var(--success);
}

.newsletter-benefits {
    background: var(--light-gray);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.newsletter-benefits h3 {
    font-size: var(--fs-lg);
    color: var(--secondary-color);
    margin-bottom: var(--spacing-sm);
}

.newsletter-benefits ul {
    list-style: none;
    padding: 0;
}

.newsletter-benefits li {
    padding: var(--spacing-xs) 0;
    font-size: var(--fs-sm);
    color: var(--dark-gray);
}

.success-message {
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--success);
    font-size: var(--fs-lg);
    font-weight: 600;
}

/* ====================
   CTA SECTION
   ==================== */
.cta-section {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    text-align: center;
}

.cta-section .section-title {
    color: var(--white);
}

.cta-text {
    font-size: var(--fs-lg);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.95;
}

.cta-text strong {
    color: var(--white);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--white);
    color: var(--primary-color);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    font-size: var(--fs-lg);
    font-weight: 600;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-lg);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
    color: var(--secondary-color);
}

.trust-indicators {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

.trust-item {
    text-align: center;
}

.trust-item strong {
    display: block;
    font-size: var(--fs-2xl);
    color: var(--white);
    font-weight: 700;
}

.trust-item span {
    font-size: var(--fs-sm);
    opacity: 0.9;
}

/* ====================
   FOOTER
   ==================== */
.site-footer {
    background: linear-gradient(135deg, var(--secondary-color) 0%, #1a3a5f 100%);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    margin-top: auto;
}

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

.footer-info,
.footer-links,
.footer-tools,
.footer-resources {
    padding: var(--spacing-sm);
}

.footer-logo {
    height: 40px;
    margin-bottom: var(--spacing-sm);
    filter: brightness(0) invert(1);
    opacity: 0.9;
}

.footer-desc {
    font-size: var(--fs-sm);
    opacity: 0.9;
    margin-top: var(--spacing-sm);
    line-height: 1.8;
}

.footer-desc strong {
    color: var(--white);
    font-weight: 600;
}

.footer-links h4,
.footer-tools h4,
.footer-resources h4 {
    font-size: var(--fs-base);
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.footer-links ul,
.footer-tools ul,
.footer-resources ul {
    list-style: none;
    padding: 0;
}

.footer-links a,
.footer-tools a,
.footer-resources a {
    display: block;
    color: var(--white);
    opacity: 0.8;
    padding: var(--spacing-xs) 0;
    font-size: var(--fs-sm);
    transition: all var(--transition-normal);
}

.footer-links a:hover,
.footer-tools a:hover,
.footer-resources a:hover {
    opacity: 1;
    transform: translateX(5px);
    color: var(--white);
}

.footer-bottom {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
}

.footer-disclaimer {
    font-size: var(--fs-xs);
    opacity: 0.7;
    max-width: 800px;
    margin: 0 auto;
}

/* ====================
   NOTIFICATIONS / TOASTS
   ==================== */
.notification {
    position: fixed;
    bottom: -100px;
    right: var(--spacing-lg);
    min-width: 300px;
    max-width: 500px;
    background: var(--white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-md);
    z-index: var(--z-notification);
    transition: all var(--transition-bounce);
    border-left: 4px solid var(--info);
}

.notification.show {
    bottom: var(--spacing-lg);
}

.notification-success {
    border-left-color: var(--success);
}

.notification-error {
    border-left-color: var(--danger);
}

.notification-warning {
    border-left-color: var(--warning);
}

.notification-info {
    border-left-color: var(--info);
}

.notification-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
}

.notification-message {
    font-size: var(--fs-sm);
    color: var(--text-color);
}

.notification-close {
    background: none;
    border: none;
    color: var(--dark-gray);
    font-size: var(--fs-xl);
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: grid;
    place-items: center;
    transition: all var(--transition-fast);
}

.notification-close:hover {
    color: var(--danger);
    transform: scale(1.2);
}

/* ====================
   UTILITY CLASSES
   ==================== */
[hidden] {
    display: none !important;
}

.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

/* ====================
   ANIMATIONS
   ==================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

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

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

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* ====================
   MEDIA QUERIES
   ==================== */
@media (max-width: 992px) {
    /* Tablet adjustments */
    .comparison-wrapper,
    .competitors-comparison {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
}

@media (max-width: 768px) {
    /* Mobile Menu Toggle */
    .mobile-menu-toggle {
        display: block;
    }
    
    /* Navigation Mobile */
    .main-nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--white);
        box-shadow: var(--shadow-xl);
        transition: right var(--transition-normal);
        z-index: 99;
        overflow-y: auto;
    }
    
    .main-nav.active {
        right: 0;
    }
    
    .main-nav ul {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 80px var(--spacing-md) var(--spacing-md);
    }
    
    .main-nav a {
        display: block;
        padding: var(--spacing-md);
        border-bottom: 1px solid var(--light-gray);
        font-size: var(--fs-base);
    }
    
    .main-nav a::after {
        display: none;
    }
    
    /* Mobile Menu Overlay */
    .mobile-menu-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        z-index: 98;
    }
    
    .mobile-menu-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    
    /* Hero Mobile */
    .hero {
        padding: var(--spacing-xl) 0;
    }
    
    .hero-features {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    /* Converter Mobile */
    .upload-area {
        padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .compression-options {
        grid-template-columns: 1fr;
    }
    
    .option-card {
        flex-direction: row;
        justify-content: flex-start;
        min-height: auto;
        padding: var(--spacing-sm);
    }
    
    .option-icon {
        margin-bottom: 0;
        margin-right: var(--spacing-sm);
    }
    
    /* Results Mobile */
    .conversion-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .batch-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .batch-actions button {
        width: 100%;
    }
    
    .result-item {
        flex-direction: column;
        text-align: center;
    }
    
    .result-preview {
        margin-bottom: var(--spacing-sm);
    }
    
    .result-actions {
        flex-direction: row;
        width: 100%;
    }
    
    .result-actions button {
        flex: 1;
    }
    
    /* Comparison Mode Mobile */
    .comparison-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .comparison-divider {
        transform: rotate(90deg);
        margin: var(--spacing-md) 0;
    }
    
    /* Tables Mobile */
    .comparison-table {
        font-size: var(--fs-xs);
    }
    
    .comparison-table th,
    .comparison-table td {
        padding: var(--spacing-xs);
    }
    
    /* Grids Mobile */
    .info-grid,
    .features-grid,
    .formats-grid,
    .steps-grid,
    .use-cases-grid,
    .faq-grid,
    .guarantee-badges,
    .practices-grid {
        grid-template-columns: 1fr;
    }
    
    /* Newsletter Mobile */
    .form-group {
        flex-direction: column;
    }
    
    .email-input,
    .submit-button {
        width: 100%;
    }
    
    /* Footer Mobile */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links a,
    .footer-tools a,
    .footer-resources a {
        display: inline-block;
        margin: 0 var(--spacing-sm);
    }
    
    /* Trust Indicators Mobile */
    .trust-indicators {
        gap: var(--spacing-md);
    }
    
    /* Notifications Mobile */
    .notification {
        left: var(--spacing-md);
        right: var(--spacing-md);
        min-width: auto;
    }
}

@media (max-width: 480px) {
    /* Extra small devices */
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .converter-wrapper {
        padding: var(--spacing-md);
    }
    
    .upload-title {
        font-size: var(--fs-lg);
    }
    
    .section-title {
        font-size: var(--fs-2xl);
    }
    
    .hero-title {
        font-size: var(--fs-2xl);
    }
    
    .hero-subtitle {
        font-size: var(--fs-base);
    }
}

/* ====================
   PRINT STYLES
   ==================== */
@media print {
    .site-header,
    .site-footer,
    .upload-area,
    .compression-settings,
    .download-button,
    .cta-section,
    .notification {
        display: none !important;
    }
    
    body {
        font-size: 12pt;
        color: #000;
        background: #fff;
    }
    
    .container {
        max-width: 100%;
    }
}

/* ====================
   ACCESSIBILITY
   ==================== */
*:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

*:focus:not(:focus-visible) {
    outline: none;
}

*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0056b3;
        --secondary-color: #1a3a5f;
        --text-color: #000;
        --light-gray: #f0f0f0;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ====================
   CHAT WIDGET
   ==================== */
#chat-widget {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: var(--z-fixed);
}