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

/* CSS Custom Properties - Light Theme */
:root {
    /* Primary Colors */
    --primary-red: #DC2626;
    --dark-red: #B91C1C;
    --light-red: #FEE2E2;
    --red-50: #FEF2F2;

    /* Background Colors - Light Theme */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;
    --bg-accent: #FEF2F2;

    /* Text Colors */
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-tertiary: #9CA3AF;
    --text-light: #D1D5DB;

    /* Border Colors */
    --border-light: #F3F4F6;
    --border-medium: #E5E7EB;
    --border-dark: #D1D5DB;

    /* Success/Error Colors */
    --success: #10B981;
    --success-light: #D1FAE5;
    --error: #EF4444;
    --error-light: #FEE2E2;
    --warning: #F59E0B;
    --warning-light: #FEF3C7;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;

    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;

    /* Premium SaaS Style for Smarter PDF Homepage */
    --brand-red: #E53935;
    --brand-blue: #1976D2;
    --neutral-dark: #222;
    --neutral-body: #444;
    --neutral-bg: #F7F7F9;
    --card-bg: #fff;
    --card-radius: 16px;
    --card-shadow: 0 4px 24px rgba(34, 34, 34, 0.08);
    --card-shadow-hover: 0 8px 32px rgba(229, 57, 53, 0.12);
    --section-padding: 64px;
    --grid-gap: 32px;
    --button-radius: 8px;
    --button-padding: 12px 32px;
    --button-font: 600 1rem Inter, sans-serif;
}


/* Base Styles */
html {
    scroll-behavior: smooth;
    font-size: 16px;
    min-width: 320px;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', sans-serif;
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--neutral-body);
    background: transparent;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    margin: 0;
    position: relative;
    min-width: 320px;
    overflow-x: hidden;
}

/* Container */
.container {
    display: flex;
    flex-direction: column;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

@media (min-width: 768px) {
    .container {
        padding: 0 2rem;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 3rem;
    }
}

/* Header */
.header {
    background: linear-gradient(90deg,
            #ffd6dc 0%,
            #ffeef1 50%,
            #ffffff 100%);
    backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid rgba(229, 57, 53, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
    padding: 0;
    transition: all 0.3s ease;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) 0;
    padding: 16px 0;
}

.logo h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-red);
    transition: color var(--transition-fast);
    font-size: 2rem;
    font-weight: 700;
    color: var(--brand-red);
    margin: 0;
}

.logo a:hover h1 {
    color: var(--dark-red);
}

.nav {
    display: flex;
    gap: var(--spacing-8);
    gap: 32px;
}

@media screen and (max-width: 900px) {

    /* Hide menu by default */
    .nav {
        display: none;
        flex-direction: column;
        background: var(--bg-secondary);
        position: absolute;
        top: 60px;
        right: 30px;
        width: 50%;
        gap: 10px;
        padding: 10px;
        z-index: 999;
    }

    .nav.mobile-open {
        display: flex;
    }
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
    color: var(--neutral-dark);
    font-weight: 500;
    text-decoration: none;
    font-size: 1rem;
    padding: 8px 16px;
    border-radius: 6px;
    transition: background-color 0.2s, color 0.2s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-red);
    background-color: var(--light-red);
}

.nav-link:hover {
    background: var(--brand-red);
    color: #fff;
}

.auth-buttons {
    display: flex;
    gap: var(--spacing-3);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-2);
    gap: 4px;
}

.mobile-menu-toggle span {
    width: 20px;
    height: 2px;
    background-color: var(--text-secondary);
    transition: all var(--transition-fast);
}

@media (max-width: 900px) {
    .mobile-menu-toggle {
        display: flex;

    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn svg {
    flex-shrink: 0;
}

.btn-primary {
    background-color: var(--primary-red);
    color: var(--bg-primary);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background-color: var(--dark-red);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* ✅ Mobile Fix */
@media (max-width: 480px) {
    .btn {
        white-space: normal;
        width: 100%;
        justify-content: center;
        text-align: center;
    }
}


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

.btn-secondary:hover {
    background-color: var(--light-red);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-large {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
}

.btn-full {
    width: 100%;
}

.btn-social {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-medium);
    color: var(--text-primary);
    justify-content: flex-start;
    gap: var(--spacing-3);
}

.btn-social:hover {
    background-color: var(--bg-secondary);
    border-color: var(--border-dark);
}

.btn-google:hover {
    background-color: #4285F4;
    color: white;
    border-color: #4285F4;
}

.btn-facebook:hover {
    background-color: #1877F2;
    color: white;
    border-color: #1877F2;
}

/* Hero Section */
.hero {
    /* background: linear-gradient(90deg, #fff 60%, #F7F7F9 100%); */
    padding: var(--section-padding) 0 32px 0;

}

.hero-title {
    font-size: clamp(2.2rem, 6vw, 3.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
    text-align: center;
    flex-wrap: wrap;
    gap: 0.4ch;
}

/* Gradient text */
.hero-title span {
    background: linear-gradient(135deg, #dc8d26 0%, #4435e5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;

    display: inline-block;

    /* Animation base */
    opacity: 0;
    transform: translateY(20px);
    animation: wordReveal 0.6s ease-out forwards;
}

/* Stagger */
.hero-title span:nth-child(1) {
    animation-delay: 0.1s;
}

.hero-title span:nth-child(2) {
    animation-delay: 0.2s;
}

.hero-title span:nth-child(3) {
    animation-delay: 0.3s;
}

.hero-title span:nth-child(4) {
    animation-delay: 0.4s;
}

.hero-title span:nth-child(5) {
    animation-delay: 0.5s;
}

@keyframes wordReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


.hero-subtitle {
    font-size: 1.25rem;
    color: var(--neutral-body);
    margin-bottom: 32px;
}

/* Tools Section */
.tools {
    padding: 3rem 0;
    background: linear-gradient(180deg,
            #ffe4e6 0%,
            #fff1f2 35%,
            #fff7f8 100%);
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-12);
    margin-bottom: 32px;
}

.section-header h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: #1F2937;
    margin-bottom: var(--spacing-4);
    font-size: 2rem;
    font-weight: 700;
    color: var(--neutral-dark);
    margin-bottom: 8px;
}

.section-header p {
    font-size: var(--font-size-lg);
    color: #6B7280;
    font-size: 1.1rem;
    color: var(--neutral-body);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

@media (min-width: 640px) {
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .tools-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .tools-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* Tool Cards */
.tool-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(229, 57, 53, 0.1);
    border-radius: 20px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
}

.tool-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(135deg, rgba(229, 57, 53, 0.05), rgba(220, 38, 38, 0.05));
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 0;
}

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

.tool-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 20px 60px rgba(229, 57, 53, 0.15);
    border-color: rgba(229, 57, 53, 0.3);
}

.tool-card>* {
    position: relative;
    z-index: 1;
}

/* Tool Icon Backgrounds - Unique per tool */
.tool-card[data-tool="image-to-pdf"] .tool-icon {
    background: #1976D2;
}

.tool-card[data-tool="text-to-pdf"] .tool-icon {
    background: #E53935;
}

.tool-card[data-tool="merge-pdf"] .tool-icon {
    background: #FFB300;
}

.tool-card[data-tool="split-pdf"] .tool-icon {
    background: #8E24AA;
}

.tool-card[data-tool="compress-pdf"] .tool-icon {
    background: #43A047;
}

.tool-card[data-tool="add-watermark"] .tool-icon {
    background: #00897B;
}

.tool-card[data-tool="pdf-to-jpg"] .tool-icon {
    background: #F4511E;
}

.tool-card[data-tool="pdf-to-word"] .tool-icon {
    background: #3949AB;
}

.tool-card[data-tool="word-to-pdf"] .tool-icon {
    background: #039BE5;
}

.tool-card[data-tool="jpg-to-pdf"] .tool-icon {
    background: #D81B60;
}

.tool-card[data-tool="scan-to-pdf"] .tool-icon {
    background: #C0CA33;
}

.tool-card[data-tool="pdf-to-long-image"] .tool-icon {
    background: #6D4C41;
}

/* All tool icons use simple white SVGs */
.tool-icon svg {
    width: 48px;
    height: 48px;
    fill: #fff !important;
    color: #fff !important;
    background: none !important;
}

/* Remove previous SVG color overrides */
.tool-card[data-tool="image-to-pdf"] .tool-icon svg,
.tool-card[data-tool="text-to-pdf"] .tool-icon svg,
.tool-card[data-tool="merge-pdf"] .tool-icon svg,
.tool-card[data-tool="split-pdf"] .tool-icon svg,
.tool-card[data-tool="compress-pdf"] .tool-icon svg {
    color: inherit !important;
    fill: inherit !important;
    background: none !important;
}

.tool-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem auto;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    background: none;
    color: inherit;
}

.tool-card:hover .tool-icon {
    transform: scale(1.15) rotate(-5deg);
    filter: drop-shadow(0 8px 16px rgba(229, 57, 53, 0.3));
}

.tool-icon span {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.tool-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--neutral-dark);
}

.tool-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-6);
    line-height: 1.5;
    flex-grow: 1;
    font-size: 1rem;
    color: var(--neutral-body);
    margin-bottom: 16px;
    text-align: center;
}

.tool-button {
    background: linear-gradient(135deg, #E53935 0%, #DC2626 100%);
    color: #fff;
    border: none;
    padding: 0.875rem 2rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(229, 57, 53, 0.2);
    letter-spacing: 0.3px;
}

.tool-button:hover {
    background: linear-gradient(135deg, #DC2626 0%, #B91C1C 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(229, 57, 53, 0.35);
}

/* Features Section */
.features {
    padding: var(--spacing-20) 0;
    background-color: var(--bg-secondary);
    background: #fff;
    padding: 48px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    display: flex;
    gap: 32px;
    justify-content: center;
    flex-wrap: wrap;
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    text-align: center;
    padding: var(--spacing-6);
    background-color: var(--bg-primary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-light);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-4);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-red);
    border-radius: var(--radius-xl);
    color: var(--primary-red);
}

.feature-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.feature-item {
    background: var(--neutral-bg);
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(34, 34, 34, 0.04);
    padding: 32px 24px;
    min-width: 220px;
    text-align: center;
}

.feature-item h3 {
    color: var(--brand-red);
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.feature-item p {
    color: var(--neutral-body);
    font-size: 1rem;
}

/* Tool Section */
.tool-section {
    padding: var(--spacing-16) 0;
    background-color: var(--bg-primary);
}

.tool-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-12);
    padding-bottom: var(--spacing-8);
    border-bottom: 1px solid var(--border-medium);
}

.tool-icon-large {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--light-red), var(--red-50));
    border-radius: var(--radius-2xl);
    color: var(--primary-red);
    flex-shrink: 0;
}

.tool-info h1 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
    margin-top: 5rem;
}

@media (max-width:770px) {
    .tool-info h1 {
        margin-top: 0rem;
    }

}

.tool-info p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: 1.6;
}

.tool-workspace {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
}

@media (min-width: 1024px) {
    .tool-workspace {
        grid-template-columns: 2fr 1fr;
    }
}

/* Upload Section */
.upload-section {
    margin-bottom: calc(var(--spacing-8) * 1.5);
}

/* Upload Area */
.upload-section .upload-area {
    border: 2px dashed var(--border-dark);
    border-radius: var(--radius-xl);
    padding: clamp(3rem, 6vw, 4rem);
    text-align: center;
    background: linear-gradient(180deg,
            var(--bg-secondary),
            var(--bg-primary));
    cursor: pointer;
    transition:
        border-color var(--transition-normal),
        background-color var(--transition-normal),
        transform 0.25s ease,
        box-shadow 0.25s ease;
}

.upload-section .upload-area:hover,
.upload-section .upload-area.dragover {
    border-color: var(--primary-red);
    background: linear-gradient(180deg,
            var(--light-red),
            var(--bg-primary));
    transform: translateY(-3px);
    box-shadow: 0 18px 40px rgba(220, 38, 38, 0.14);
}

.upload-section .upload-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-6);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: calc(var(--radius-xl) + 4px);
    background: linear-gradient(135deg,
            rgba(220, 38, 38, 0.14),
            rgba(220, 38, 38, 0.04));
    color: var(--primary-red);
    box-shadow:
        0 10px 24px rgba(0, 0, 0, 0.06);
    transition: transform 0.25s ease;
}

.upload-section .upload-area:hover .upload-icon {
    transform: scale(1.08);
}

/* Upload Content */
.upload-section .upload-content h3 {
    font-size: clamp(1.4rem, 2.4vw, 1.6rem);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
    letter-spacing: -0.01em;
}

.upload-section .upload-content p {
    max-width: 560px;
    margin: 0 auto var(--spacing-7);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--text-secondary);
}

/* Input Section */
.input-section {
    margin-bottom: var(--spacing-8);
}

.input-section h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

.text-input-container {
    position: relative;
}

.text-input {
    width: 100%;
    min-height: 300px;
    padding: var(--spacing-4);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-lg);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    resize: vertical;
    transition: border-color var(--transition-fast);
}

.text-input:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.text-stats {
    display: flex;
    justify-content: space-between;
    margin-top: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var (--text-secondary);
}

/* Action Section */
.action-section {
    display: flex;
    gap: var(--spacing-4);
    justify-content: flex-end;
    align-items: center;
}

@media (max-width: 767px) {
    .action-section {
        flex-direction: column;
        align-items: stretch;
    }
}

/* Options Panel */
.options-panel,
.preview-panel {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
    height: fit-content;
}

.options-panel h3,
.preview-panel h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

.option-group {
    margin-bottom: var(--spacing-4);
}

.option-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.form-select,
.form-input {
    width: 100%;
    padding: var(--spacing-3);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    background-color: var(--bg-primary);
    transition: border-color var(--transition-fast);
}

.form-select:focus,
.form-input:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.checkbox-group {
    margin-bottom: var(--spacing-4);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
}

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

.checkmark {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-dark);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.checkbox-label input[type="checkbox"]:checked+.checkmark {
    background-color: var(--primary-red);
    border-color: var(--primary-red);
}

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

/* Preview Panel */
.preview-container {
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    overflow: hidden;

}

.preview-page {
    aspect-ratio: 210/297;
    /* A4 ratio */
    background-color: white;
    padding: var(--spacing-4);
    font-size: 10px;
    line-height: 1.4;
    box-shadow: var(--shadow-sm);
}

.preview-content {
    height: 80%;
    overflow: hidden;
    white-space: pre-wrap;
}

.preview-placeholder {
    color: var(--text-tertiary);
    font-style: italic;
    text-align: center;
    margin-top: 50%;
}
/* File List Section */
.file-list-section {
    width: 100%;
    max-width: 1100px;
    /* ✅ same as options */
    margin-left: auto;
    margin-right: auto;
    padding-left: 16px;
    padding-right: 16px;
    margin-bottom: var(--spacing-8);
}

@media (max-width: 1200px) {

    .file-list-section,
    .options-section {
        max-width: 100%;
    }
}

.file-list {
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-lg);
    background-color: var(--bg-secondary);
    padding: var(--spacing-4);
    min-height: 200px;

}

.file-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
    background-color: var(--bg-primary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-3);
    border: 1px solid var(--border-light);
    cursor: move;
    transition: all var(--transition-fast);
}

.file-item:hover {
    box-shadow: var(--shadow-md);
}

.file-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-red);
    border-radius: var(--radius-md);
    color: var(--primary-red);
}

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

.file-name {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-1);
    word-break: break-word;
    overflow-wrap: anywhere;
}

.file-order,
.file-remove {
    flex-shrink: 0;
}

@media (max-width: 480px) {
    .file-name {
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
}

.file-size {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.file-actions {
    display: flex;
    gap: var(--spacing-3);
    margin-top: var(--spacing-6);
    justify-content: space-between;
    align-items: center;
}

@media (max-width: 767px) {
    .file-actions {
        flex-direction: column;
        align-items: stretch;
    }
}

.image-preview {
    width: 64px;
    height: 64px;
    flex-shrink: 0;
    overflow: hidden;
    border-radius: var(--radius-md);
    background-color: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
}

.image-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Options Section */

.options-section {
    background: linear-gradient(180deg,
            var(--bg-secondary),
            var(--bg-primary));
    border-radius: var(--radius-xl);
    width: min(1100px, 92vw);
    margin: auto;
    padding: clamp(20px, 4vw, 32px);
    margin-bottom: var(--spacing-8);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-light);
}

.options-section h3 {
    font-size: clamp(1.2rem, 2vw, 1.4rem);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-5);
    display: flex;
    align-items: center;
    gap: 8px;
}


.options-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    position: relative;
}

@media (min-width: 768px) {
    .options-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
}

.options-grid::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 1px;
    height: 70%;
    background: var(--border-light);
    transform: translate(-50%, -50%);
}

@media (max-width: 767px) {
    .options-grid::before {
        display: none;
    }
}


.options-grid>div {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.options-section label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}


.options-section select {
    width: 100%;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-medium);
    background-color: var(--bg-primary);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.options-section select:hover {
    border-color: var(--primary-red);
}

.options-section select:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}


.options-section input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--primary-red);
    cursor: pointer;
}


.options-section .btn-primary {
    margin-top: 28px;
    align-self: flex-start;
    padding: 12px 26px;
    font-size: 1rem;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg,
            #dc2626,
            #ef4444);
    color: #fff;
    border: none;
    box-shadow: 0 10px 20px rgba(220, 38, 38, 0.3);
    cursor: pointer;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.options-section .btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 14px 28px rgba(220, 38, 38, 0.4);
}

.options-section .btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 8px 16px rgba(220, 38, 38, 0.25);
}


@media (max-width: 480px) {
    .options-section {
        padding: 20px;
    }

    .options-section .btn-primary {
        width: 100%;
        justify-content: center;
        text-align: center;
    }
}

/* Progress Section */
.progress-section {
    margin-bottom: var(--spacing-8);
}

.progress-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-6);
    padding: var(--spacing-8);
    background-color: var(--bg-secondary);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-medium);
}

.progress-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-light);
    border-top: 3px solid var(--primary-red);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

    100% {
        transform: rotate(360deg);
    }
}

.progress-content {
    flex-grow: 1;
}

.progress-content h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.progress-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-4);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--border-light);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-red), var(--dark-red));
    border-radius: var(--radius-sm);
    transition: width var(--transition-normal);
    width: 0%;
}

/* Result Section */
.result-section {
    margin-bottom: var(--spacing-8);
}

.result-card {
    text-align: center;
    padding: var(--spacing-12);
    background: linear-gradient(135deg, var(--success-light), var(--bg-primary));
    border-radius: var(--radius-2xl);
    border: 1px solid var(--success);
}

.result-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-6);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--success);
    border-radius: 50%;
    color: white;
}

.result-content h3 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
}

.result-content p {
    font-size: var(--font-size-lg);
    color: var (--text-secondary);
    margin-bottom: var(--spacing-6);
}

.result-stats {
    display: flex;
    justify-content: center;
    gap: var (--spacing-8);
    margin-bottom: var(--spacing-8);
    flex-wrap: wrap;
}

.result-stats .stat {
    text-align: center;
}

.result-stats .stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-1);
}

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

.result-actions {
    display: flex;
    gap: var(--spacing-4);
    justify-content: center;
    flex-wrap: wrap;
}

/* Auth Section */
.auth-section {
    padding: var(--spacing-16) 0;
    background: linear-gradient(135deg, var(--red-50) 0%, var(--bg-secondary) 100%);
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
}

.auth-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-12);
    align-items: start;
}

@media (min-width: 1024px) {
    .auth-container {
        grid-template-columns: 1fr 1fr;
    }
}

.auth-card {
    background-color: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border-light);
}

.auth-header {
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.auth-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-4);
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--light-red), var(--red-50));
    border-radius: var(--radius-2xl);
    color: var(--primary-red);
}

.auth-header h1 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.auth-header p {
    color: var(--text-secondary);
}

.auth-form {
    margin-bottom: var(--spacing-6);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-4);
}

@media (min-width: 640px) {
    .form-row {
        grid-template-columns: 1fr 1fr;
    }
}

.form-group {
    margin-bottom: var(--spacing-4);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.password-input-container {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: var(--spacing-3);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-1);
}

.password-strength {
    margin-top: var(--spacing-2);
}

.strength-bar {
    width: 100%;
    height: 4px;
    background-color: var(--border-light);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-1);
}

.strength-fill {
    height: 100%;
    border-radius: var(--radius-sm);
    transition: all var(--transition-normal);
    width: 0%;
}

.strength-text {
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.form-options {
    margin-bottom: var(--spacing-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

.forgot-password {
    color: var(--primary-red);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.forgot-password:hover {
    color: var(--dark-red);
}

.form-divider {
    text-align: center;
    margin: var(--spacing-6) 0;
    position: relative;
}

.form-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background-color: var(--border-medium);
}

.form-divider span {
    background-color: var(--bg-primary);
    padding: 0 var(--spacing-4);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.social-login {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.auth-footer {
    text-align: center;
    padding-top: var(--spacing-6);
    border-top: 1px solid var(--border-light);
}

.auth-footer a {
    color: var(--primary-red);
    text-decoration: none;
    font-weight: 500;
}

.auth-footer a:hover {
    color: var(--dark-red);
}

.auth-benefits {
    background-color: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-8);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-light);
}

.auth-benefits h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-6);
    text-align: center;
}

.benefits-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-4);
}

.benefit-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-red);
    border-radius: var(--radius-lg);
    color: var(--primary-red);
    flex-shrink: 0;
}

.benefit-content h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-1);
}

.benefit-content p {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.5;
}

.form-error {
    color: var(--error);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-1);
    display: none;
}

.form-error.show {
    display: block;
}

.button-spinner {
    display: none;
}

.button-spinner .spinner {
    width: 16px;
    height: 16px;
    border-width: 2px;
}

/* About Content */
.about-content {
    padding: var(--spacing-16) 0;
}

.content-section {
    margin-bottom: var(--spacing-16);
}

.content-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
    align-items: center;
}

@media (min-width: 768px) {
    .content-grid {
        grid-template-columns: 2fr 1fr;
    }
}

.content-text h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

.content-text p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-4);
}

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

.content-image {
    display: flex;
    justify-content: center;
}

.image-placeholder {
    width: 100%;
    max-width: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    margin-bottom: var(--spacing-8);
}

.feature-item {
    text-align: center;
    padding: var(--spacing-6);
}

.feature-item .feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-4);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-red);
    border-radius: var(--radius-xl);
    color: var(--primary-red);
}

.feature-item h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-3);
}

.feature-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.tools-overview {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-8);
}

@media (min-width: 768px) {
    .tools-overview {
        grid-template-columns: repeat(3, 1fr);
    }
}

.tools-category {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-6);
}

.tools-category h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

.tools-category ul {
    list-style: none;
}

.tools-category li {
    padding: var(--spacing-2) 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-light);
}

.tools-category li:last-child {
    border-bottom: none;
}

.contact-section {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-8);
    text-align: center;
}

.contact-section h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-4);
}

.contact-section p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-8);
}

.contact-info {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-6);
}

@media (min-width: 768px) {
    .contact-info {
        grid-template-columns: repeat(2, 1fr);
    }
}

.contact-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    text-align: left;
    padding: 1rem;
    width: auto;
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--light-red);
    border-radius: var(--radius-lg);
    color: var(--primary-red);
    flex-shrink: 0;
}

.contact-details h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-1);
}

.contact-details p {
    color: var(--text-secondary);
    margin: 0;
}

/* Footer */
.footer {
    background-color: var(--text-primary);
    color: var(--bg-primary);
    padding: var(--spacing-16) 0 var(--spacing-8);
    /* background: var(--neutral-dark); */
    color: #fff;
    padding: 48px 0 16px 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32;
    margin-bottom: var(--spacing-8);
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: 2fr 1fr 1fr;
        gap: 32px;
        align-items: start;
    }
}

.footer-content>.footer-section {
    justify-self: center;
    max-width: 320px;
}

.footer-section h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--brand-red);
    margin-bottom: 12px;
}

.footer-section h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--brand-red);
    margin-bottom: 12px;
}

.footer-section p {
    color: var(--text-tertiary);
    line-height: 1.6;
    margin-bottom: var(--spacing-4);
}


.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section ul li {
    margin-bottom: var(--spacing-2);
}

.footer-section ul li a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.footer-section ul li a:hover {
    color: var(--brand-red);
}


.social-links {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

.social-links a {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--text-primary);
    border-radius: var(--radius-md);
    color: #fff;
    transition: transform 0.2s ease, background-color 0.2s ease;
}

.social-links a:hover {
    background-color: var(--text-secondary);
    transform: scale(1.1);
}

@media (max-width: 767px) {
    .footer-section {
        text-align: center;
    }

    .footer-section ul {
        padding: 0;
    }

    .footer-section ul li {
        margin-bottom: 10px;
    }

    .social-links {
        justify-content: center;
    }
}

.footer-bottom {
    border-top: 1px solid var(--text-secondary);
    padding-top: var(--spacing-8);
    text-align: center;
    margin-top: 32px;
    color: #bbb;
    font-size: 0.95rem;
}

.footer-bottom p {
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    margin: 0;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.tool-card {
    animation: fadeInUp 0.8s ease-out backwards;
}

.tool-card:nth-child(1) {
    animation-delay: 0.1s;
}

.tool-card:nth-child(2) {
    animation-delay: 0.2s;
}

.tool-card:nth-child(3) {
    animation-delay: 0.3s;
}

.tool-card:nth-child(4) {
    animation-delay: 0.4s;
}

.tool-card:nth-child(5) {
    animation-delay: 0.5s;
}

.tool-card:nth-child(6) {
    animation-delay: 0.6s;
}

.tool-card:nth-child(7) {
    animation-delay: 0.7s;
}

.tool-card:nth-child(8) {
    animation-delay: 0.8s;
}

.tool-card:nth-child(9) {
    animation-delay: 0.9s;
}

.tool-card:nth-child(10) {
    animation-delay: 1.0s;
}

.tool-card:nth-child(11) {
    animation-delay: 1.1s;
}

.tool-card:nth-child(12) {
    animation-delay: 1.2s;
}

/* Responsive Design */
@media (max-width: 767px) {
    .hero {
        padding: var(--spacing-16) 0;
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .tools {
        padding: var(--spacing-16) 0;
    }

    .tool-card {
        padding: var(--spacing-5);
    }

    .auth-buttons .btn {
        padding: var(--spacing-2) var(--spacing-4);
        font-size: var(--font-size-xs);
    }

    .tool-header {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-4);
    }

    .tool-icon-large {
        width: 64px;
        height: 64px;
        margin: 2rem;
    }
}

@media (max-width: 900px) {
    .header-content {
        flex-direction: row;
        align-items: flex-start;
        gap: 16px;
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }

    .tools-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .features-grid {
        flex-direction: column;
        gap: 16px;
        align-items: center;
    }
}

@media (max-width: 600px) {
    .header-content {
        flex-direction: row;
        align-items: flex-start;
        gap: 8px;
    }

    .footer-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .tools-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .tool-card,
    .feature-item {
        padding: 20px 12px;
    }

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

    .section-header h2 {
        font-size: 1.3rem;
    }
}

/* Focus States for Accessibility */
.btn:focus,
.tool-card:focus,
.nav-link:focus,
.form-input:focus,
.form-select:focus {
    outline: 2px solid var(--primary-red);
    outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {

    .tool-card,
    .feature-card,
    .auth-card {
        border-width: 2px;
    }

    .btn {
        border-width: 2px;
    }
}

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

    .tool-card {
        animation: none;
    }

    .spinner {
        animation: none;
    }
}

/* Ripple Effect */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.6);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out;
    pointer-events: none;
    z-index: 1;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Tool Button Loading State */
.tool-button.loading {
    min-width: 150px;
    pointer-events: none;
}

/* Print Styles */
@media print {

    .header,
    .footer,
    .auth-buttons,
    .mobile-menu-toggle {
        display: none;
    }

    .hero,
    .tools,
    .auth-section {
        padding: var(--spacing-4) 0;
    }

    .tool-card,
    .feature-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--border-medium);
    }

    body {
        background: white;
        color: black;
    }
}


@media screen and (min-width:900px) {
    .scan-methods {
        display: flex;
        flex-direction: row;
        justify-content: center;
        align-items: center;
        gap: 30rem;
    }

    .camera-scan-section,
    .upload-scan-section {

        margin-bottom: var(--spacing-5);
        margin-top: var(--spacing-5);
    }
}

@media screen and (min-width:400px) {
    .scan-methods {
        display: flex;
        gap: 15rem;
    }
}

.scan-method-section h2 {
    text-align: center;
    font-weight: bolder;
    margin-bottom: var(--spacing-8);
    color: black;
}

/* Notification System */
.notification-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 10px;
    pointer-events: none;
}

.notification {
    background: white;
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    max-width: 400px;
    transform: translateX(120%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: auto;
    border-left: 4px solid var(--primary-red);
}

.notification.show {
    transform: translateX(0);
}

.notification-success {
    border-left-color: #10B981;
}

.notification-error {
    border-left-color: #EF4444;
}

.notification-warning {
    border-left-color: #F59E0B;
}

.notification-info {
    border-left-color: #3B82F6;
}

.notification-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
}

.notification-content {
    flex: 1;
}

.notification-content p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-primary);
    font-weight: 500;
}

.notification-close {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-tertiary);
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
}

.notification-close:hover {
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .notification-container {
        bottom: 20px;
        left: 20px;
        right: 20px;
        align-items: center;
    }

    .notification {
        width: 100%;
        min-width: auto;
        max-width: 100%;
    }
}




/* ===== Split Options Section ===== */

.split-options-section {
    max-width: 1100px;
    width: 100%;
    box-sizing: border-box;
}

@media (max-width: 768px) {
    .split-options-section {
        padding: 1.25rem;
        margin-left: auto;
        margin-right: auto;
    }
}



.split-methods {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    width: 100%;
    box-sizing: border-box;
}

@media (min-width: 768px) {
    .split-methods {
        grid-template-columns: repeat(3, 1fr);
    }
}

.split-method {
    position: relative;
}

.split-method input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.split-method label {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem;
    background: #ffffff;
    border-radius: 16px;
    border: 2px solid #E5E7EB;
    cursor: pointer;
    transition: all 0.25s ease;
    height: 100%;
    width: 100%;
    box-sizing: border-box;
}

.split-method label:hover {
    border-color: #EF4444;
    box-shadow: 0 10px 24px rgba(239, 68, 68, 0.15);
    transform: translateY(-2px);
}

.split-method input[type="radio"]:checked+label {
    border-color: #EF4444;
    background: linear-gradient(180deg, #FFF5F5, #FFFFFF);
    box-shadow: 0 12px 28px rgba(239, 68, 68, 0.2);
}

.method-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: #FEE2E2;
    color: #EF4444;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.split-method input[type="radio"]:checked+label .method-icon {
    background: #EF4444;
    color: #ffffff;
}

.method-info h4 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: #111827;
}

.method-info p {
    margin: 0.25rem 0 0;
    font-size: 0.875rem;
    color: #6B7280;
    line-height: 1.4;
}

@media (max-width: 480px) {
    .split-method label {
        padding: 1rem;
    }

    .method-icon {
        width: 40px;
        height: 40px;
    }
}

.split-config {
    margin-top: 1.5rem;
}

.config-section {
    background: #ffffff;
    border-radius: 18px;
    padding: 1.75rem;
    margin-bottom: 1.5rem;
    border: 1px solid #E5E7EB;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
}

.config-section h3 {
    margin: 0 0 1rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: #111827;
}

.page-input-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.page-input-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #374151;
}

.page-input-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: 12px;
    border: 1.5px solid #D1D5DB;
    font-size: 0.95rem;
    outline: none;
    transition: all 0.2s ease;
}

.page-input-group input::placeholder {
    color: #9CA3AF;
}

.page-input-group input:focus {
    border-color: #EF4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.page-input-group small {
    font-size: 0.78rem;
    color: #6B7280;
}

.page-preview {
    margin-top: 1.25rem;
    padding: 1rem;
    background: #F9FAFB;
    border-radius: 14px;
    border: 1px dashed #D1D5DB;
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #9CA3AF;
    font-size: 0.85rem;
}

@media (max-width: 480px) {
    .config-section {
        padding: 1.25rem;
    }

    .config-section h3 {
        font-size: 1rem;
    }
}

.ranges-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.range-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.range-item label {
    font-size: 0.85rem;
    font-weight: 600;
    color: #374151;
    min-width: 70px;
}

.range-input {
    flex: 1;
    padding: 0.65rem 0.9rem;
    border-radius: 12px;
    border: 1.5px solid #D1D5DB;
    font-size: 0.9rem;
    outline: none;
    transition: all 0.2s ease;
}

.range-input:focus {
    border-color: #EF4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.btn-icon.remove-range {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: none;
    background: #FEE2E2;
    color: #EF4444;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.btn-icon.remove-range:hover {
    background: #EF4444;
    color: #ffffff;
}

#addRange {
    margin-top: 1rem;
}

.equal-options {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

@media (min-width: 640px) {
    .equal-options {
        grid-template-columns: repeat(2, 1fr);
    }
}

.equal-options .option-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.equal-options label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #374151;
}

.equal-options input {
    padding: 0.7rem 0.9rem;
    border-radius: 12px;
    border: 1.5px solid #D1D5DB;
    font-size: 0.95rem;
    outline: none;
    transition: all 0.2s ease;
}

.equal-options input:focus {
    border-color: #EF4444;
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

/* Split button area */
.split-actions {
    margin-top: 2rem;
    padding-top: 1.5rem;
    display: flex;
    justify-content: center;

}

@media (max-width: 640px) {
    .split-actions {
        margin-top: 2.5rem;
    }
}


@media (max-width: 280px) {

    .split-options-section {
        padding: 0.75rem !important;
    }

    .split-method label {
        padding: 0.75rem !important;
        gap: 0.5rem;
    }

    .config-section {
        padding: 0.75rem !important;
    }

    .split-config {
        margin-top: 1rem;
        gap: 1rem;
    }

    .split-actions {
        padding-top: 1rem;
        margin-top: 1.25rem;
    }
}

/* Result Section Layout */

.result-section {
    width: 100%;
    max-width: 1100px;
    margin: 2.5rem auto;
    display: flex;
    justify-content: center;
    box-sizing: border-box;
}

.result-content {
    width: 100%;
    background: #ffffff;
    border-radius: 24px;
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
    box-sizing: border-box;
}

.result-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.25rem;
    border-radius: 50%;
    background: #FEE2E2;
    color: #EF4444;
    display: flex;
    align-items: center;
    justify-content: center;
}

.result-content h3 {
    margin: 0 0 0.5rem;
    font-size: 1.4rem;
    font-weight: 700;
    color: #111827;
}

.result-content p {
    margin: 0 0 1.75rem;
    font-size: 0.95rem;
    color: #6B7280;
}

.result-title {
    margin-bottom: 1.25rem;
    font-size: 1.1rem;
    font-weight: 600;
    color: #374151;
}

.result-files {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
    align-items: center;
}

.result-file {
    max-width: 520px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1rem;
    justify-content: flex-start;
}

.result-file .file-icon {
    flex-shrink: 0;
}

.result-file .file-info {
    min-width: 0;
}

.result-file .file-name {
    white-space: normal;
    word-break: break-word;
}

.result-file .file-meta {
    font-size: 0.85rem;
    color: #6B7280;
}


.result-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.result-actions .btn-large {
    padding: 0.9rem 2.25rem;
    font-size: 1rem;
    border-radius: 14px;
}


@media (max-width: 768px) {
    .result-content {
        padding: 1.75rem 1.25rem;
    }
}

@media (max-width: 480px) {
    .result-file {
        justify-content: flex-start;
    }

    .result-actions {
        flex-direction: column;
    }

    .result-actions .btn {
        width: 100%;
        justify-content: center;
    }

    .result-icon {
        width: 64px;
        height: 64px;
    }

    .result-content h3 {
        font-size: 1.2rem;
    }
}

/* split pdf page preview */
.page-numbers {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-top: 8px;
}

.page-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 10px;
    border-radius: 8px;
    background-color: #fee2e2;
    color: #b91c1c;
    font-weight: 600;
    font-size: 14px;
}

/* 
 ===================  Feedback section   ================ */


.feedback-section {
    padding: 96px 16px;
    background: linear-gradient(
        180deg,
        #fff1f2 0%,
        #ffffff 100%
    );
}

.feedback-container {
    max-width: 720px;
    margin: 0 auto;
    background: var(--bg-primary);
    padding: 48px;
    border-radius: 24px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.06);
    text-align: center;
}

.feedback-title {
    font-size: clamp(1.8rem, 3vw, 2.2rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feedback-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

/* Form */
.feedback-form {
    text-align: left;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border-radius: 14px;
    border: 1px solid var(--border-medium);
    font-size: 0.95rem;
    font-family: inherit;
    background: var(--bg-secondary);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.12);
}

.feedback-form button {
    width: 100%;
    margin-top: 12px;
}

/* Mobile */
@media (max-width: 640px) {
    .feedback-container {
        padding: 32px 20px;
    }
}

.feedback-success {
    margin-top: 20px;
    color: #16a34a;
    font-weight: 600;
    text-align: center;
}

.feedback-status {
    margin-top: 16px;
    font-size: 0.95rem;
    font-weight: 600;
    text-align: center;
}

.feedback-status.success {
    color: #16a34a;
}

.feedback-status.error {
    color: #dc2626;
}


/* ============= Desktop Popup ==============*/

.desktop-popup {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.desktop-popup.show {
    opacity: 1;
    pointer-events: auto;
}

.desktop-popup-card {
    background: #ffffff;
    border-radius: 16px;
    padding: 24px;
    width: 90%;
    max-width: 360px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    animation: popupScale 0.35s ease;
}

.desktop-popup-card h3 {
    margin-bottom: 12px;
    font-size: 1.25rem;
    color: #dc2626;
}

.desktop-popup-card p {
    font-size: 0.95rem;
    line-height: 1.5;
    color: #444;
    margin-bottom: 20px;
}

.desktop-popup-card button {
    background: #dc2626;
    color: #fff;
    border: none;
    padding: 10px 18px;
    border-radius: 10px;
    font-size: 0.9rem;
    cursor: pointer;
}

@keyframes popupScale {
    from {
        transform: scale(0.9);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}