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

:root {
    --pinterest-red: #E60023;
    --pinterest-red-dark: #C0001E;
    --dark-bg: #0F0F0F;
    --card-bg: #1A1A1A;
    --text-primary: #FFFFFF;
    --text-secondary: #A0A0A0;
    --border-color: #2A2A2A;
    --hover-bg: #252525;
    --success-green: #00A36C;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1A1A1A 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

/* Navbar Styles */
.navbar {
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 2rem;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: var(--pinterest-red);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: rotate(0deg);
    transition: transform 0.3s ease;
}

.logo-icon:hover {
    transform: rotate(180deg);
}

.logo-icon svg {
    width: 20px;
    height: 20px;
    fill: white;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--pinterest-red);
}

/* Dropdown Menu */
.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    transition: all 0.3s;
}

.dropdown-btn:hover {
    border-color: var(--pinterest-red);
    background: var(--hover-bg);
}

.dropdown-content {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.5rem;
    min-width: 280px;
    max-height: 400px;
    overflow-y: auto;
    display: none;
    z-index: 1000;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s;
    font-size: 0.9rem;
}

.dropdown-content a:hover {
    background: var(--hover-bg);
    color: var(--pinterest-red);
}

.dropdown-content a svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem;
    z-index: 999;
}

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

.mobile-menu a {
    display: block;
    padding: 0.75rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: 8px;
    margin-bottom: 0.25rem;
}

.mobile-menu a:hover {
    background: var(--hover-bg);
    color: var(--pinterest-red);
}

/* Main Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* Hero Section */
.hero {
    text-align: center;
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #fff 0%, var(--pinterest-red) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    color: var(--text-secondary);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Tool Card */
.tool-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2.5rem;
    margin-bottom: 3rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    margin-bottom: 1.5rem;
    transition: all 0.3s;
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--pinterest-red);
    background: var(--hover-bg);
}

.upload-area svg {
    width: 48px;
    height: 48px;
    fill: var(--pinterest-red);
    margin-bottom: 1rem;
}

.file-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.button {
    background: var(--pinterest-red);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
    display: block;
}

.button:hover {
    background: var(--pinterest-red-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(230, 0, 35, 0.3);
}

.button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    margin: 1rem 0;
    overflow: hidden;
    display: none;
}

.progress-fill {
    height: 100%;
    background: var(--pinterest-red);
    width: 0%;
    transition: width 0.3s;
}

.result-area {
    margin-top: 2rem;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.result-header h3 {
    color: var(--text-primary);
}

.copy-btn {
    background: var(--hover-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
}

.copy-btn:hover {
    background: var(--pinterest-red);
    border-color: var(--pinterest-red);
}

.copy-btn.copied {
    background: var(--success-green);
    border-color: var(--success-green);
}

.output-text {
    width: 100%;
    min-height: 200px;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem;
    color: var(--text-primary);
    font-family: monospace;
    resize: vertical;
}

/* New file info display */
.file-info-details {
    margin-top: 10px;
    color: var(--pinterest-red);
    font-size: 0.9rem;
    text-align: center;
    word-break: break-word;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    text-align: center;
}

.feature-card svg {
    width: 40px;
    height: 40px;
    fill: var(--pinterest-red);
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.5rem;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Install Popup */
.install-popup {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    max-width: 320px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    display: none;
    animation: slideIn 0.3s ease;
    z-index: 1000;
}

.install-popup.show {
    display: block;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

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

.popup-header svg {
    width: 32px;
    height: 32px;
    fill: var(--pinterest-red);
}

.popup-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.popup-btn {
    flex: 1;
    padding: 0.75rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s;
}

.popup-btn.primary {
    background: var(--pinterest-red);
    color: white;
}

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

.popup-btn:hover {
    transform: translateY(-2px);
}

/* FAQ Section */
.faq-section {
    margin: 3rem 0;
}

.faq-grid {
    display: grid;
    gap: 1rem;
    margin-top: 2rem;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    cursor: pointer;
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
}

.faq-answer {
    color: var(--text-secondary);
    margin-top: 1rem;
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

/* ========== NEW SEO CONTENT SECTION ========== */
.seo-content-section {
    margin: 4rem 0 2rem;
}

.seo-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2rem;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    color: var(--text-secondary);
}

.seo-card h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    background: linear-gradient(135deg, #fff 0%, var(--pinterest-red) 80%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.seo-card h3 {
    font-size: 1.5rem;
    margin: 1.75rem 0 1rem;
    color: var(--text-primary);
    border-left: 4px solid var(--pinterest-red);
    padding-left: 1rem;
}

.seo-card p {
    margin-bottom: 1.25rem;
    line-height: 1.7;
}

.seo-card ul {
    margin: 1rem 0 1.5rem 2rem;
    list-style: disc;
}

.seo-card li {
    margin-bottom: 0.5rem;
}

.seo-card .seo-feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
    margin: 1.5rem 0;
}

.seo-feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--hover-bg);
    padding: 0.75rem 1rem;
    border-radius: 12px;
    transition: all 0.3s;
}

.seo-feature-item svg {
    width: 24px;
    height: 24px;
    fill: var(--pinterest-red);
    flex-shrink: 0;
}

.seo-feature-item span {
    font-size: 0.95rem;
    color: var(--text-primary);
}

.seo-faq-compact {
    display: grid;
    gap: 1rem;
    margin: 1.5rem 0;
}

.seo-faq-compact-item {
    background: var(--hover-bg);
    padding: 1rem;
    border-radius: 12px;
    border-left: 3px solid var(--pinterest-red);
}

.seo-faq-compact-item strong {
    color: var(--text-primary);
}

.seo-card em {
    display: block;
    margin-top: 2rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-align: center;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

/* Responsive adjustments for new section */
@media (max-width: 768px) {
    .seo-card {
        padding: 1.5rem;
    }
    .seo-card h2 {
        font-size: 1.6rem;
    }
    .seo-card h3 {
        font-size: 1.3rem;
    }
    .seo-feature-list {
        grid-template-columns: 1fr;
    }
}

/* Footer */
.footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 3rem 2rem 1rem;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-section a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}

.footer-section a:hover {
    color: var(--pinterest-red);
}

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

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--hover-bg);
    border-radius: 50%;
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--pinterest-red);
    transform: translateY(-3px);
}

.social-links svg {
    width: 20px;
    height: 20px;
    fill: var(--text-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

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

    .hero h1 {
        font-size: 2rem;
    }

    .tool-card {
        padding: 1.5rem;
    }

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

    .install-popup {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
        max-width: none;
    }
}