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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header Styles */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.logo h1 {
    color: #2563eb;
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #2563eb;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Main Content */
.main {
    margin-top: 80px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

/* Converter Tool */
.converter-tool {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    max-width: 600px;
    margin: 0 auto;
    color: #333;
}

.upload-area {
    border: 3px dashed #e5e7eb;
    border-radius: 10px;
    padding: 3rem 2rem;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover {
    border-color: #2563eb;
    background-color: #f8faff;
}

.upload-area.dragover {
    border-color: #2563eb;
    background-color: #f0f7ff;
}

.upload-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.upload-area h3 {
    margin-bottom: 0.5rem;
    color: #374151;
}

.upload-area p {
    color: #6b7280;
    margin-bottom: 1.5rem;
}

.file-input {
    display: none;
}

.upload-btn {
    background: #2563eb;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.upload-btn:hover {
    background: #1d4ed8;
}

/* Preview Area */
.preview-area {
    text-align: left;
}

.preview-area h3 {
    margin-bottom: 1rem;
    color: #374151;
}

.preview-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
    max-height: 300px;
    overflow-y: auto;
    padding: 1rem;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    background: #f9fafb;
}

.preview-item {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    background: white;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.preview-image {
    width: 100%;
    height: 120px;
    object-fit: cover;
}

.preview-controls {
    position: absolute;
    top: 5px;
    right: 5px;
    display: flex;
    gap: 5px;
}

.control-btn {
    background: rgba(0,0,0,0.7);
    color: white;
    border: none;
    width: 25px;
    height: 25px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.control-btn:hover {
    background: rgba(0,0,0,0.9);
}

.preview-filename {
    padding: 8px;
    font-size: 0.8rem;
    color: #6b7280;
    text-align: center;
    word-break: break-word;
}

/* Options */
.options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1rem;
    background: #f9fafb;
    border-radius: 8px;
}

.option-group {
    display: flex;
    flex-direction: column;
}

.option-group label {
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #374151;
}

.option-group select {
    padding: 8px 12px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 1rem;
    background: white;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: #2563eb;
    color: white;
}

.btn-primary:hover {
    background: #1d4ed8;
    transform: translateY(-2px);
}

.btn-secondary {
    background: #6b7280;
    color: white;
}

.btn-secondary:hover {
    background: #4b5563;
}

/* Loading */
.loading {
    text-align: center;
    padding: 2rem;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #e5e7eb;
    border-top: 4px solid #2563eb;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Success */
.success {
    text-align: center;
    padding: 2rem;
}

.success-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.success h3 {
    color: #059669;
    margin-bottom: 0.5rem;
}

.success p {
    color: #6b7280;
    margin-bottom: 2rem;
}

/* Features Section */
.features {
    padding: 4rem 0;
    background: white;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #374151;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature {
    text-align: center;
    padding: 2rem;
    border-radius: 10px;
    background: #f9fafb;
    transition: transform 0.3s ease;
}

.feature:hover {
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature h3 {
    margin-bottom: 1rem;
    color: #374151;
}

.feature p {
    color: #6b7280;
    line-height: 1.6;
}

/* How to Use Section */
.how-to-use {
    padding: 4rem 0;
    background: #f8f9fa;
}

.how-to-use h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #374151;
}

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

.step {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.step-number {
    width: 60px;
    height: 60px;
    background: #2563eb;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.step h3 {
    margin-bottom: 1rem;
    color: #374151;
}

.step p {
    color: #6b7280;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: #1f2937;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #f9fafb;
}

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

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

.footer-section ul li a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #2563eb;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 1rem;
    text-align: center;
    color: #9ca3af;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.05);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .converter-tool {
        margin: 0 1rem;
        padding: 1.5rem;
    }
    
    .upload-area {
        padding: 2rem 1rem;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .features h2,
    .how-to-use h2 {
        font-size: 2rem;
    }
    
    .options {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 2rem 0;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .converter-tool {
        padding: 1rem;
    }
    
    .upload-area {
        padding: 1.5rem 1rem;
    }
    
    .upload-icon {
        font-size: 2rem;
    }
    
    .preview-container {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
    
    .preview-image {
        height: 100px;
    }
}


/* Page Content Styles */
.page-content {
    padding: 2rem 0 4rem;
    background: white;
    min-height: calc(100vh - 160px);
}

.content-wrapper {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.content-wrapper h1 {
    font-size: 2.5rem;
    color: #2563eb;
    margin-bottom: 2rem;
    text-align: center;
}

.content-wrapper h2 {
    font-size: 1.8rem;
    color: #374151;
    margin: 2.5rem 0 1rem;
    border-bottom: 2px solid #e5e7eb;
    padding-bottom: 0.5rem;
}

.content-wrapper h3 {
    font-size: 1.4rem;
    color: #4b5563;
    margin: 2rem 0 1rem;
}

.content-wrapper h4 {
    font-size: 1.2rem;
    color: #6b7280;
    margin: 1.5rem 0 0.5rem;
}

.content-section {
    margin-bottom: 2rem;
}

.content-section p {
    margin-bottom: 1rem;
    color: #374151;
}

.content-section ul,
.content-section ol {
    margin: 1rem 0 1rem 2rem;
    color: #374151;
}

.content-section li {
    margin-bottom: 0.5rem;
}

.content-section a {
    color: #2563eb;
    text-decoration: none;
}

.content-section a:hover {
    text-decoration: underline;
}

.last-updated {
    background: #f3f4f6;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    text-align: center;
}

.acknowledgment {
    background: #fef3c7;
    border: 1px solid #f59e0b;
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 2rem;
    text-align: center;
}

/* Contact Page Specific Styles */
.contact-intro {
    background: #f8faff;
    padding: 2rem;
    border-radius: 10px;
    margin-bottom: 3rem;
    text-align: center;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.contact-form {
    background: #f9fafb;
    padding: 2rem;
    border-radius: 10px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #374151;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 1rem;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.contact-info-section {
    background: #f9fafb;
    padding: 2rem;
    border-radius: 10px;
}

.contact-method {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
}

.contact-method:last-child {
    border-bottom: none;
}

.contact-method h3 {
    color: #2563eb;
    margin-bottom: 1rem;
}

.contact-method a {
    color: #2563eb;
    text-decoration: none;
    font-weight: 600;
}

.contact-method a:hover {
    text-decoration: underline;
}

.faq-section {
    background: #f8faff;
    padding: 2rem;
    border-radius: 10px;
    margin-bottom: 3rem;
}

.faq-item {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-item h3 {
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.feedback-section {
    background: #f0fdf4;
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid #bbf7d0;
}

/* Navigation active state */
.nav-link.active {
    color: #2563eb;
    font-weight: 600;
}

/* Responsive adjustments for content pages */
@media (max-width: 768px) {
    .content-wrapper h1 {
        font-size: 2rem;
    }
    
    .content-wrapper h2 {
        font-size: 1.5rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .contact-form,
    .contact-info-section {
        padding: 1.5rem;
    }
    
    .content-section ul,
    .content-section ol {
        margin-left: 1rem;
    }
}

@media (max-width: 480px) {
    .page-content {
        padding: 1rem 0 2rem;
    }
    
    .content-wrapper h1 {
        font-size: 1.8rem;
    }
    
    .contact-form,
    .contact-info-section,
    .faq-section,
    .feedback-section {
        padding: 1rem;
    }
}


/* Blog Styles */
.blog-hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 3rem 0;
    text-align: center;
}

.blog-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.blog-hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.blog-content {
    padding: 4rem 0;
    background: #f8f9fa;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.blog-post {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.blog-post:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.post-image {
    height: 200px;
    background: linear-gradient(45deg, #f3f4f6, #e5e7eb);
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-image {
    font-size: 3rem;
    color: #6b7280;
}

.post-content {
    padding: 1.5rem;
}

.post-content h2 {
    margin-bottom: 0.5rem;
}

.post-content h2 a {
    color: #374151;
    text-decoration: none;
    font-size: 1.3rem;
    line-height: 1.4;
}

.post-content h2 a:hover {
    color: #2563eb;
}

.post-meta {
    color: #6b7280;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.post-content p {
    color: #4b5563;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.read-more {
    color: #2563eb;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.read-more:hover {
    color: #1d4ed8;
}

/* Full Articles */
.full-articles {
    margin-top: 4rem;
}

.full-article {
    background: white;
    padding: 3rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.full-article h1 {
    color: #2563eb;
    font-size: 2.2rem;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.article-meta {
    color: #6b7280;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e5e7eb;
}

.article-content {
    line-height: 1.8;
}

.article-content h2 {
    color: #374151;
    font-size: 1.6rem;
    margin: 2rem 0 1rem;
    border-bottom: 2px solid #e5e7eb;
    padding-bottom: 0.5rem;
}

.article-content h3 {
    color: #4b5563;
    font-size: 1.3rem;
    margin: 1.5rem 0 0.5rem;
}

.article-content p {
    color: #374151;
    margin-bottom: 1rem;
}

.article-content ul,
.article-content ol {
    margin: 1rem 0 1rem 2rem;
    color: #374151;
}

.article-content li {
    margin-bottom: 0.5rem;
}

.article-content strong {
    color: #2563eb;
}

.more-articles {
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

/* Responsive Blog Styles */
@media (max-width: 768px) {
    .blog-hero h1 {
        font-size: 2rem;
    }
    
    .blog-hero p {
        font-size: 1rem;
    }
    
    .blog-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .full-article {
        padding: 2rem 1.5rem;
        margin-bottom: 2rem;
    }
    
    .full-article h1 {
        font-size: 1.8rem;
    }
    
    .article-content h2 {
        font-size: 1.4rem;
    }
    
    .article-content h3 {
        font-size: 1.2rem;
    }
}

@media (max-width: 480px) {
    .blog-hero {
        padding: 2rem 0;
    }
    
    .blog-content {
        padding: 2rem 0;
    }
    
    .post-content {
        padding: 1rem;
    }
    
    .full-article {
        padding: 1.5rem 1rem;
    }
    
    .article-content ul,
    .article-content ol {
        margin-left: 1rem;
    }
}
/* Cookie Banner Styles */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: #1f2937;
    color: white;
    padding: 1rem;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.2);
    z-index: 1001;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.cookie-banner-content {
    flex-grow: 1;
}

.cookie-banner-content p {
    margin: 0;
    font-size: 0.9rem;
}

.cookie-banner-content a {
    color: #60a5fa;
    text-decoration: underline;
}

.cookie-banner-buttons button {
    background: #2563eb;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
}

.cookie-banner-buttons button:hover {
    background: #1d4ed8;
}