/* ===============================================
   Web2P - Free WebP Converter Tool
   Global Styles and Variables
   =============================================== */

:root {
    --primary-yellow: #ebd234;
    --primary-green: #0bb029;
    --dark-bg: #1a1a1a;
    --darker-bg: #0f0f0f;
    --light-text: #ffffff;
    --gray-text: #cccccc;
    --card-bg: #2a2a2a;
    --border-color: #3a3a3a;
    --error-color: #ff4444;
    --success-color: #0bb029;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--darker-bg);
    color: var(--light-text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ===============================================
   Header Styles
   =============================================== */

.header {
    background: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 0;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
    color: var(--light-text);
    cursor: pointer;
    transition: var(--transition);
}

.logo span {
    color: var(--primary-yellow);
}

.logo:hover {
    transform: scale(1.05);
}

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

.nav a {
    color: var(--gray-text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

.nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-yellow), var(--primary-green));
    transition: width 0.3s ease;
}

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

.nav a:hover::after,
.nav a.active::after {
    width: 100%;
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--light-text);
    transition: var(--transition);
}

/* ===============================================
   Hero Section
   =============================================== */

.hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background: linear-gradient(135deg, #1a1a1a 0%, #0f0f0f 100%);
}

.particle-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.particle {
    position: absolute;
    font-size: 2rem;
    opacity: 0.15;
    animation: float 15s infinite ease-in-out;
    pointer-events: none;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    25% {
        transform: translateY(-30px) rotate(90deg);
    }
    50% {
        transform: translateY(-60px) rotate(180deg);
    }
    75% {
        transform: translateY(-30px) rotate(270deg);
    }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 2rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-yellow) 0%, var(--primary-green) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--gray-text);
    margin-bottom: 2rem;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--primary-yellow) 0%, var(--primary-green) 100%);
    color: var(--dark-bg);
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 50px;
    transition: var(--transition);
    box-shadow: 0 10px 30px rgba(235, 210, 52, 0.3);
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(235, 210, 52, 0.5);
}

/* Animations */
.animate-in {
    opacity: 0;
    animation: fadeInUp 1s ease forwards;
}

.delay-1 {
    animation-delay: 0.3s;
}

.delay-2 {
    animation-delay: 0.6s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===============================================
   Converter Section
   =============================================== */

.converter-section {
    padding: 4rem 0;
    background: var(--darker-bg);
}

.converter-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.converter-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-yellow), var(--primary-green));
}

.converter-card h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--light-text);
}

.converter-subtitle {
    text-align: center;
    color: var(--gray-text);
    margin-bottom: 2rem;
}

.upload-area {
    border: 3px dashed var(--border-color);
    border-radius: 15px;
    padding: 3rem;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--primary-yellow);
    background: rgba(235, 210, 52, 0.05);
}

.upload-area.drag-over {
    border-color: var(--primary-green);
    background: rgba(11, 176, 41, 0.1);
    transform: scale(1.02);
}

.upload-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.upload-text {
    font-size: 1.3rem;
    color: var(--light-text);
    margin-bottom: 0.5rem;
}

.upload-subtext {
    color: var(--gray-text);
    margin: 1rem 0;
}

.file-label {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: var(--primary-yellow);
    color: var(--dark-bg);
    border-radius: 50px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.file-label:hover {
    background: var(--primary-green);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(11, 176, 41, 0.4);
}

.supported-formats {
    margin-top: 1rem;
    color: var(--gray-text);
    font-size: 0.9rem;
}

/* Conversion Options */
.conversion-options {
    margin-top: 2rem;
}

.file-info {
    background: rgba(235, 210, 52, 0.1);
    border: 1px solid var(--primary-yellow);
    border-radius: 10px;
    padding: 1rem;
    margin-bottom: 1.5rem;
    color: var(--light-text);
}

.format-selector {
    margin-bottom: 1.5rem;
}

.format-selector label {
    display: block;
    margin-bottom: 0.8rem;
    font-weight: 600;
    color: var(--light-text);
}

.format-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.format-btn {
    flex: 1;
    min-width: 100px;
    padding: 0.8rem 1.5rem;
    background: var(--dark-bg);
    color: var(--gray-text);
    border: 2px solid var(--border-color);
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

.format-btn:hover {
    border-color: var(--primary-yellow);
    color: var(--primary-yellow);
}

.format-btn.active {
    background: linear-gradient(135deg, var(--primary-yellow), var(--primary-green));
    color: var(--dark-bg);
    border-color: transparent;
}

.quality-slider {
    margin-bottom: 1.5rem;
}

.quality-slider label {
    display: block;
    margin-bottom: 0.8rem;
    font-weight: 600;
    color: var(--light-text);
}

#qualitySlider {
    width: 100%;
    height: 8px;
    border-radius: 5px;
    background: var(--border-color);
    outline: none;
    cursor: pointer;
}

#qualitySlider::-webkit-slider-thumb {
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-yellow);
    cursor: pointer;
    transition: var(--transition);
}

#qualitySlider::-webkit-slider-thumb:hover {
    background: var(--primary-green);
    transform: scale(1.2);
}

.convert-button {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-yellow), var(--primary-green));
    color: var(--dark-bg);
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 1rem;
}

.convert-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(235, 210, 52, 0.4);
}

.reset-button {
    width: 100%;
    padding: 0.8rem;
    background: transparent;
    color: var(--gray-text);
    border: 2px solid var(--border-color);
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.reset-button:hover {
    border-color: var(--primary-yellow);
    color: var(--primary-yellow);
}

/* Preview Section */
.preview-section {
    margin-top: 2rem;
}

.preview-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 2rem;
    align-items: center;
    margin-bottom: 2rem;
}

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

.preview-box h3 {
    margin-bottom: 1rem;
    color: var(--primary-yellow);
}

.preview-box img {
    max-width: 100%;
    max-height: 300px;
    border-radius: 10px;
    border: 2px solid var(--border-color);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.preview-info {
    margin-top: 0.8rem;
    color: var(--gray-text);
    font-size: 0.9rem;
}

.preview-arrow {
    font-size: 2rem;
    color: var(--primary-green);
}

.download-button {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-green), var(--primary-yellow));
    color: var(--dark-bg);
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

.download-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(11, 176, 41, 0.4);
}

/* Loading Overlay */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26, 26, 26, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    z-index: 10;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-yellow);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-overlay p {
    margin-top: 1rem;
    color: var(--gray-text);
}

/* Error Message */
.error-message {
    background: rgba(255, 68, 68, 0.1);
    border: 2px solid var(--error-color);
    border-radius: 10px;
    padding: 1rem;
    margin-top: 1rem;
    color: var(--error-color);
    text-align: center;
}

/* ===============================================
   Features Section
   =============================================== */

.features-section {
    padding: 5rem 0;
    background: var(--dark-bg);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--light-text);
}

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

.feature-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-yellow);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

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

.feature-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-yellow);
    font-size: 1.5rem;
}

.feature-card p {
    color: var(--gray-text);
    line-height: 1.8;
}

/* ===============================================
   How It Works Section
   =============================================== */

.how-it-works {
    padding: 5rem 0;
    background: var(--darker-bg);
}

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

.step {
    text-align: center;
    padding: 2rem;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-yellow), var(--primary-green));
    color: var(--dark-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0 auto 1.5rem;
    box-shadow: 0 5px 20px rgba(235, 210, 52, 0.3);
}

.step h3 {
    margin-bottom: 1rem;
    color: var(--light-text);
}

.step p {
    color: var(--gray-text);
    line-height: 1.8;
}

/* ===============================================
   SEO Content Section
   =============================================== */

.seo-content {
    padding: 5rem 0;
    background: var(--dark-bg);
}

.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.content-wrapper h2 {
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-yellow);
}

.content-wrapper h3 {
    font-size: 1.8rem;
    margin: 2rem 0 1rem;
    color: var(--primary-green);
}

.content-wrapper p {
    margin-bottom: 1.5rem;
    color: var(--gray-text);
    line-height: 1.9;
    font-size: 1.05rem;
}

.content-wrapper strong {
    color: var(--light-text);
}

/* ===============================================
   FAQ Section
   =============================================== */

.faq-section {
    padding: 5rem 0;
    background: var(--darker-bg);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--card-bg);
    border-radius: 10px;
    margin-bottom: 1rem;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.faq-question {
    padding: 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(235, 210, 52, 0.05);
}

.faq-question h3 {
    color: var(--light-text);
    font-size: 1.1rem;
    margin: 0;
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--primary-yellow);
    transition: var(--transition);
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 1.5rem 1.5rem;
    color: var(--gray-text);
    line-height: 1.8;
}

/* ===============================================
   Footer
   =============================================== */

.footer {
    background: var(--darker-bg);
    border-top: 1px solid var(--border-color);
    padding: 3rem 0 1rem;
}

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

.footer-column h4 {
    color: var(--primary-yellow);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.footer-logo {
    font-size: 2rem;
    font-weight: 700;
    color: var(--light-text);
    margin-bottom: 1rem;
}

.footer-logo span {
    color: var(--primary-yellow);
}

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

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

.social-icons a {
    width: 40px;
    height: 40px;
    background: var(--card-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-text);
    transition: var(--transition);
}

.social-icons a:hover {
    background: var(--primary-yellow);
    color: var(--dark-bg);
    transform: translateY(-5px);
}

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

.footer-column ul li {
    margin-bottom: 0.8rem;
}

.footer-column ul li a,
.footer-column ul li span {
    color: var(--gray-text);
    text-decoration: none;
    transition: var(--transition);
}

.footer-column ul li a:hover {
    color: var(--primary-yellow);
    padding-left: 5px;
}

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

/* ===============================================
   Page Header (for other pages)
   =============================================== */

.page-header {
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--darker-bg) 100%);
    padding: 4rem 0;
    text-align: center;
    border-bottom: 3px solid;
    border-image: linear-gradient(90deg, var(--primary-yellow), var(--primary-green)) 1;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--light-text);
}

.page-header p {
    font-size: 1.2rem;
    color: var(--gray-text);
}

/* ===============================================
   About Content
   =============================================== */

.about-content,
.contact-content,
.policy-content {
    padding: 4rem 0;
}

.about-content .content-wrapper,
.policy-content .content-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.about-content h2,
.policy-content h2 {
    font-size: 2rem;
    margin: 2.5rem 0 1.5rem;
    color: var(--primary-yellow);
}

.about-content p,
.policy-content p {
    margin-bottom: 1.5rem;
    color: var(--gray-text);
    line-height: 1.9;
}

.policy-content ul,
.policy-content ol {
    margin: 1.5rem 0 1.5rem 2rem;
    color: var(--gray-text);
    line-height: 1.9;
}

.policy-content li {
    margin-bottom: 0.8rem;
}

.policy-content a {
    color: var(--primary-yellow);
    text-decoration: none;
    transition: var(--transition);
}

.policy-content a:hover {
    color: var(--primary-green);
}

/* ===============================================
   Contact Page
   =============================================== */

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

.contact-info h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-yellow);
}

.contact-info p {
    color: var(--gray-text);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.contact-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.contact-item h3 {
    color: var(--light-text);
    margin-bottom: 0.5rem;
}

.contact-item p,
.contact-item a {
    color: var(--gray-text);
    text-decoration: none;
    transition: var(--transition);
}

.contact-item a:hover {
    color: var(--primary-yellow);
}

/* Contact Form */
.contact-form-container {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--light-text);
    font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    background: var(--dark-bg);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--light-text);
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-yellow);
}

.submit-button {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary-yellow), var(--primary-green));
    color: var(--dark-bg);
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(235, 210, 52, 0.4);
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 8px;
    display: none;
}

.form-message.success {
    background: rgba(11, 176, 41, 0.1);
    border: 2px solid var(--success-color);
    color: var(--success-color);
    display: block;
}

.form-message.error {
    background: rgba(255, 68, 68, 0.1);
    border: 2px solid var(--error-color);
    color: var(--error-color);
    display: block;
}

.contact-note {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--border-color);
}

.contact-note h3 {
    color: var(--primary-yellow);
    margin-bottom: 1rem;
}

.contact-note p {
    color: var(--gray-text);
    line-height: 1.8;
    margin-bottom: 1rem;
}

/* ===============================================
   Responsive Design
   =============================================== */

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: var(--dark-bg);
        transition: var(--transition);
        border-top: 1px solid var(--border-color);
    }

    .nav.active {
        left: 0;
    }

    .nav ul {
        flex-direction: column;
        padding: 2rem;
        gap: 0;
    }

    .nav ul li {
        margin-bottom: 1rem;
    }

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

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .converter-card {
        padding: 2rem 1.5rem;
    }

    .preview-container {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .preview-arrow {
        transform: rotate(90deg);
    }

    .contact-wrapper {
        grid-template-columns: 1fr;
    }

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

    .page-header h1 {
        font-size: 2rem;
    }
}