/* PDFMody - Professional Purple Theme */

/* ============================================
   CSS Variables - Purple Office Theme
   ============================================ */
:root {
    /* Primary Colors */
    --primary-50: #F5F3FF;
    --primary-100: #EDE9FE;
    --primary-200: #DDD6FE;
    --primary-300: #C4B5FD;
    --primary-400: #A78BFA;
    --primary-500: #8B5CF6;
    --primary-600: #7C3AED;
    --primary-700: #6D28D9;
    --primary-800: #5B21B6;
    --primary-900: #4C1D95;

    /* Accent Colors */
    --accent-violet: #8B5CF6;
    --accent-purple: #7C3AED;
    --accent-indigo: #6366F1;

    /* Semantic Colors */
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --info: #3B82F6;

    /* Backgrounds */
    --bg-primary: #FAFBFC;
    --bg-secondary: #F3F4F6;
    --bg-card: #FFFFFF;
    --bg-hover: #F9FAFB;

    /* Text Colors */
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --text-inverse: #FFFFFF;

    /* Borders */
    --border-light: #E5E7EB;
    --border-medium: #D1D5DB;
    --border-focus: var(--primary-500);

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-purple: 0 4px 14px 0 rgba(124, 58, 237, 0.25);

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

    /* Spacing */
    --container-max: 1280px;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 200ms ease;
    --transition-slow: 300ms ease;
}

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

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--primary-600);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-700);
}

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

/* ============================================
   Layout Utilities
   ============================================ */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

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

.justify-between {
    justify-content: space-between;
}

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

.gap-1 {
    gap: 0.25rem;
}

.gap-2 {
    gap: 0.5rem;
}

.gap-3 {
    gap: 0.75rem;
}

.gap-4 {
    gap: 1rem;
}

.gap-6 {
    gap: 1.5rem;
}

.gap-8 {
    gap: 2rem;
}

.grid {
    display: grid;
}

.grid-cols-1 {
    grid-template-columns: repeat(1, 1fr);
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

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

.grid-cols-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-cols-5 {
    grid-template-columns: repeat(5, 1fr);
}

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

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

    .md\:grid-cols-4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

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

    .lg\:grid-cols-5 {
        grid-template-columns: repeat(5, 1fr);
    }
}

/* ============================================
   Typography
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.125rem;
}

h6 {
    font-size: 1rem;
}

.text-muted {
    color: var(--text-muted);
}

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

.text-primary-color {
    color: var(--primary-600);
}

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

.text-sm {
    font-size: 0.875rem;
}

.text-lg {
    font-size: 1.125rem;
}

.text-xl {
    font-size: 1.25rem;
}

.text-2xl {
    font-size: 1.5rem;
}

.text-3xl {
    font-size: 1.875rem;
}

.text-4xl {
    font-size: 2.25rem;
}

.font-medium {
    font-weight: 500;
}

.font-semibold {
    font-weight: 600;
}

.font-bold {
    font-weight: 700;
}

/* ============================================
   Header & Navigation
   ============================================ */
.header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-light);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 4rem;
    padding: 0 1.5rem;
    max-width: var(--container-max);
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-600);
}

.logo svg {
    width: 2rem;
    height: 2rem;
}

.logo span {
    background: linear-gradient(135deg, var(--primary-600), var(--accent-violet));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary-600);
}

.nav-dropdown {
    position: relative;
}

.nav-dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    cursor: pointer;
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem;
}

.nav-dropdown-trigger:hover {
    color: var(--primary-600);
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 1rem;
    min-width: 600px;
    display: none;
    z-index: 50;
}

.nav-dropdown:hover .nav-dropdown-menu {
    display: block;
}

.nav-dropdown-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.5rem;
}

.nav-dropdown-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.nav-dropdown-item:hover {
    background: var(--primary-50);
}

.nav-dropdown-item .icon {
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-100);
    color: var(--primary-600);
}

.nav-dropdown-item-text {
    font-weight: 500;
    font-size: 0.875rem;
    color: var(--text-primary);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-600), var(--primary-700));
    color: var(--text-inverse);
    box-shadow: var(--shadow-purple);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-700), var(--primary-800));
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.35);
}

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

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-300);
}

.btn-outline {
    background: transparent;
    color: var(--primary-600);
    border: 2px solid var(--primary-600);
}

.btn-outline:hover {
    background: var(--primary-600);
    color: var(--text-inverse);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
}

.btn-icon {
    padding: 0.75rem;
}

/* ============================================
   Cards
   ============================================ */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--primary-300);
    box-shadow: var(--shadow-lg);
}

.card-featured {
    border-color: var(--primary-200);
    background: linear-gradient(135deg, var(--bg-card), var(--primary-50));
}

.card-featured:hover {
    border-color: var(--primary-400);
    box-shadow: var(--shadow-purple);
}

/* Tool Cards */
.tool-card {
    display: block;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-xl);
    padding: 1.5rem;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.tool-card:hover {
    border-color: var(--primary-400);
    box-shadow: var(--shadow-purple);
    transform: translateY(-4px);
}

.tool-card-icon {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.tool-card-icon.purple {
    background: var(--primary-100);
    color: var(--primary-600);
}

.tool-card-icon.blue {
    background: #DBEAFE;
    color: #2563EB;
}

.tool-card-icon.green {
    background: #D1FAE5;
    color: #059669;
}

.tool-card-icon.orange {
    background: #FED7AA;
    color: #EA580C;
}

.tool-card-icon.pink {
    background: #FCE7F3;
    color: #DB2777;
}

.tool-card-icon.cyan {
    background: #CFFAFE;
    color: #0891B2;
}

.tool-card-icon.red {
    background: #FEE2E2;
    color: #DC2626;
}

.tool-card-icon.yellow {
    background: #FEF3C7;
    color: #D97706;
}

.tool-card-icon.indigo {
    background: #E0E7FF;
    color: #4F46E5;
}

.tool-card-icon.gray {
    background: #F3F4F6;
    color: #6B7280;
}

.tool-card-icon.violet {
    background: #EDE9FE;
    color: #7C3AED;
}

.tool-card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.tool-card:hover .tool-card-title {
    color: var(--primary-600);
}

.tool-card-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--accent-violet) 50%, var(--accent-indigo) 100%);
    color: var(--text-inverse);
    padding: 5rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--text-inverse);
}

.hero p {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

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

.btn-white {
    background: var(--text-inverse);
    color: var(--primary-600);
}

.btn-white:hover {
    background: var(--primary-50);
    transform: translateY(-1px);
}

.btn-glass {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    color: var(--text-inverse);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.25);
}

/* ============================================
   Sections
   ============================================ */
.section {
    padding: 4rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

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

.category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.category-icon {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.category-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.category-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ============================================
   Upload Zone
   ============================================ */
.upload-zone {
    border: 2px dashed var(--border-medium);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    background: var(--bg-secondary);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--primary-500);
    background: var(--primary-50);
}

.upload-zone-icon {
    width: 4rem;
    height: 4rem;
    margin: 0 auto 1rem;
    background: var(--primary-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-600);
    font-size: 1.5rem;
}

.upload-zone-text {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.upload-zone-hint {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* ============================================
   FAQ Section
   ============================================ */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.faq-item:hover {
    border-color: var(--primary-300);
}

.faq-item[open] {
    border-color: var(--primary-400);
    box-shadow: var(--shadow-md);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    list-style: none;
    font-weight: 600;
    color: var(--text-primary);
}

.faq-question::-webkit-details-marker {
    display: none;
}

.faq-question::after {
    content: '▼';
    font-size: 0.75rem;
    color: var(--text-muted);
    transition: transform var(--transition-normal);
}

.faq-item[open] .faq-question::after {
    transform: rotate(180deg);
    color: var(--primary-600);
}

.faq-answer {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-secondary);
    line-height: 1.7;
    border-top: 1px solid var(--border-light);
    padding-top: 1rem;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--text-primary);
    color: var(--text-inverse);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

.footer-brand .logo {
    color: var(--text-inverse);
    margin-bottom: 1rem;
}

.footer-brand .logo span {
    background: linear-gradient(135deg, var(--primary-400), var(--accent-violet));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.footer-desc {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    line-height: 1.6;
}

.footer-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
    color: rgba(255, 255, 255, 0.5);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--text-inverse);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   Forms & Inputs
   ============================================ */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-input,
.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-lg);
    background: var(--bg-card);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.1);
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3E%3Cpath stroke='%236B7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3E%3C/svg%3E");
    background-position: right 0.75rem center;
    background-repeat: no-repeat;
    background-size: 1.25rem;
    padding-right: 2.5rem;
}

/* ============================================
   Progress & Status
   ============================================ */
.progress-bar {
    height: 0.5rem;
    background: var(--bg-secondary);
    border-radius: 1rem;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-500), var(--accent-violet));
    border-radius: 1rem;
    transition: width var(--transition-slow);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 1rem;
}

.status-pending {
    background: #FEF3C7;
    color: #92400E;
}

.status-processing {
    background: #DBEAFE;
    color: #1E40AF;
}

.status-completed {
    background: #D1FAE5;
    color: #065F46;
}

.status-failed {
    background: #FEE2E2;
    color: #991B1B;
}

/* ============================================
   Language Selector
   ============================================ */
.lang-selector {
    position: relative;
}

.lang-selector select {
    appearance: none;
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    padding: 0.5rem 2rem 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    cursor: pointer;
    color: var(--text-primary);
}

.lang-selector select:focus {
    outline: none;
    border-color: var(--primary-500);
}

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .section {
        padding: 2.5rem 0;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .nav {
        display: none;
    }

    .mobile-menu-btn {
        display: block;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}

/* ============================================
   Utilities
   ============================================ */
.hidden {
    display: none !important;
}

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

.mt-4 {
    margin-top: 1rem;
}

.mt-6 {
    margin-top: 1.5rem;
}

.mt-8 {
    margin-top: 2rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

.mb-6 {
    margin-bottom: 1.5rem;
}

.mb-8 {
    margin-bottom: 2rem;
}

.py-8 {
    padding-top: 2rem;
    padding-bottom: 2rem;
}

.px-4 {
    padding-left: 1rem;
    padding-right: 1rem;
}

/* Animation Classes */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

.animate-fadeIn {
    animation: fadeIn 0.3s ease forwards;
}

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

.animate-spin {
    animation: spin 1s linear infinite;
}

.loading-spinner {
    width: 1.5rem;
    height: 1.5rem;
    border: 2px solid var(--border-light);
    border-top-color: var(--primary-600);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}