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

:root {
    /* Color Palette */
    --primary: #3B82F6;
    --primary-dark: #2563EB;
    --secondary: #10B981;
    --secondary-dark: #059669;
    --accent: #F59E0B;
    --danger: #EF4444;

    /* Neutral */
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;

    /* Background */
    --bg-primary: #ffffff;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;

    /* Text */
    --text-primary: #111827;
    --text-secondary: #4B5563;
    --text-tertiary: #6B7280;

    /* Border */
    --border-color: #E5E7EB;
    --border-radius: 8px;
    --border-radius-lg: 12px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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);

    /* 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;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #111827;
    --bg-secondary: #1F2937;
    --bg-tertiary: #374151;
    --text-primary: #F9FAFB;
    --text-secondary: #E5E7EB;
    --text-tertiary: #D1D5DB;
    --border-color: #374151;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    transition: background-color 0.3s ease;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: all 0.2s ease;
}

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

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

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

.btn-outline:hover {
    border-color: var(--primary);
    background-color: rgba(59, 130, 246, 0.05);
}

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

/* Navigation */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--bg-primary);
    box-shadow: var(--shadow);
    padding: 1rem 0;
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand .logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-primary);
}

.nav-brand .logo i {
    color: var(--primary);
    font-size: 1.5em;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--primary);
    border-radius: 1px;
}

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: -1rem;
    background-color: var(--bg-primary);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    color: var(--text-secondary);
    white-space: nowrap;
}

.dropdown-menu a:hover {
    background-color: var(--bg-secondary);
    color: var(--primary);
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
}

/* Hero Section */
.hero {
    padding: 6rem 0 4rem;
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    align-items: center;
}

@media (min-width: 992px) {
    .hero .container {
        grid-template-columns: 1fr 1fr;
    }
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: #1e3a8a;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #3b82f6;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.hero-illustration {
    display: flex;
    justify-content: center;
    align-items: center;
}

.illustration-box {
    position: relative;
    background: white;
    padding: 3rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-xl);
    text-align: center;
}

.illustration-box i.fa-file-pdf {
    font-size: 4rem;
    color: #3b82f6;
    margin-bottom: 2rem;
    display: block;
}

.arrow-down {
    font-size: 2rem;
    color: #10b981;
    margin: 1.5rem 0;
    animation: bounce 2s infinite;
}

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

.compressed-file {
    position: relative;
    display: inline-block;
}

.compressed-file i {
    font-size: 3rem;
    color: #10b981;
}

.size-badge {
    position: absolute;
    top: -10px;
    right: -10px;
    background: #ef4444;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 600;
}

/* Section Styles */
.section {
    padding: 4rem 0;
}

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

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.section-subtitle {
    color: var(--text-tertiary);
    font-size: var(--font-size-lg);
    max-width: 600px;
    margin: 0 auto;
}

/* Kompress Section */
.compress-section {
    background: var(--bg-secondary);
    border-radius: 1rem;
    margin: 2rem auto;
}

.upload-area {
    background-color: white;
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 3rem 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--primary);
    background-color: rgba(59, 130, 246, 0.02);
}

.upload-icon {
    font-size: 3rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.upload-area h3 {
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.upload-hint {
    color: var(--text-tertiary);
    margin-bottom: 2rem;
}

.upload-stats {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 2rem;
}

.stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-tertiary);
    font-weight: 500;
}

.stat i {
    color: var(--secondary);
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.tool-card {
    background-color: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
    cursor: pointer;
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.tool-card:hover .tool-icon {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    transform: scale(1.1);
}

.tool-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--primary));
    color: white;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.tool-card h3 {
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    font-size: var(--font-size-xl);
}

.tool-card p {
    flex: 1;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.tool-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background-color: var(--bg-tertiary);
    color: var(--text-tertiary);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: var(--font-size-xs);
    font-weight: 500;
}

.tool-more {
    border: 2px dashed var(--border-color);
    background-color: transparent;
}

.tool-more:hover {
    border-color: var(--primary);
    background-color: rgba(59, 130, 246, 0.05);
}

.tool-more .tool-icon {
    background-color: var(--bg-tertiary);
    color: var(--primary);
}

.view-all-container {
    text-align: center;
    margin-top: 2rem;
}

.view-all-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: var(--primary);
    color: white;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.view-all-btn:hover {
    background: var(--primary-dark);
    transform: translateX(5px);
    gap: 1rem;
}

/* Benefits Section */
.benefits-section {
    background: var(--bg-secondary);
}

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

.benefit-card {
    background: var(--bg-primary);
    padding: 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

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

.benefit-icon {
    width: 4rem;
    height: 4rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.benefit-card h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.benefit-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.benefit-list {
    list-style: none;
}

.benefit-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.benefit-list i {
    color: var(--secondary);
}

/* Blog Section */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.blog-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

.blog-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.blog-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.blog-card:hover .blog-image img {
    transform: scale(1.05);
}

.blog-category {
    position: absolute;
    top: 1rem;
    left: 1rem;
    background: var(--primary);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.blog-content {
    padding: 1.5rem;
}

.blog-content h3 {
    margin-bottom: 0.75rem;
}

.blog-content h3 a {
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    font-weight: 600;
    text-decoration: none;
    transition: color 0.2s ease;
}

.blog-content h3 a:hover {
    color: var(--primary);
}

.blog-excerpt {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-meta {
    display: flex;
    justify-content: space-between;
    color: var(--text-tertiary);
    font-size: var(--font-size-sm);
    margin-bottom: 1rem;
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    font-weight: 600;
    text-decoration: none;
    transition: gap 0.3s ease;
}

.read-more:hover {
    gap: 1rem;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    text-align: center;
    border-radius: var(--border-radius-lg);
    margin: 4rem auto;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

.cta-section h2 {
    color: white;
    font-size: var(--font-size-3xl);
    margin-bottom: 1rem;
}

.cta-section p {
    color: #dbeafe;
    font-size: var(--font-size-lg);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-section .btn-primary {
    background: white;
    color: var(--primary);
    font-weight: 600;
    padding: 1rem 2.5rem;
    font-size: var(--font-size-lg);
}

.cta-section .btn-primary:hover {
    background: var(--gray-100);
}

/* Footer */
.footer {
    background: var(--gray-900);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: white;
    text-decoration: none;
    margin-bottom: 1rem;
}

.footer-description {
    color: var(--gray-400);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--gray-800);
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: background-color 0.2s ease;
}

.social-links a:hover {
    background-color: var(--primary);
}

.footer-col h4 {
    color: white;
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col ul li a {
    color: var(--gray-400);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-col ul li a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: 2rem;
    margin-top: 3rem;
    text-align: center;
    color: var(--gray-400);
}

.footer-bottom p {
    margin-bottom: 0.5rem;
}

.footer-bottom a {
    color: var(--gray-400);
}

.footer-bottom a:hover {
    color: white;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background-color: var(--bg-primary);
        box-shadow: var(--shadow-lg);
        padding: 1.5rem;
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-links {
        flex-direction: column;
        gap: 1rem;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        background-color: transparent;
        padding-left: 1rem;
        margin-top: 0.5rem;
    }

    .menu-toggle {
        display: block;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

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

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

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

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

    .upload-stats {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

/* Processing States */
.processing-state {
    text-align: center;
    padding: 2rem;
}

.processing-icon {
    font-size: 3rem;
    color: #3b82f6;
    margin-bottom: 1.5rem;
}

.processing-icon .fa-spin {
    animation: fa-spin 2s infinite linear;
}

.progress-container {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: #e5e7eb;
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #3b82f6, #10b981);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 4px;
}

.progress-text {
    font-weight: 600;
    color: #3b82f6;
    min-width: 40px;
}

.processing-info {
    color: #6b7280;
    font-size: 0.875rem;
    margin-top: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* Result State */
.result-state {
    text-align: center;
    padding: 2rem;
}

.result-icon {
    font-size: 3rem;
    color: #10b981;
    margin-bottom: 1.5rem;
}

.result-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin: 2rem 0;
}

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

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: #3b82f6;
    margin-bottom: 0.25rem;
}

.stat-label {
    font-size: 0.875rem;
    color: #6b7280;
}

.result-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

.drag-over {
    border-color: #3b82f6 !important;
    background-color: rgba(59, 130, 246, 0.05) !important;
}