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

:root {
    --primary-color: #FF6B35;
    --secondary-color: #F7931E;
    --text-color: #2C3E50;
    --text-light: #7F8C8D;
    --bg-color: #FFFFFF;
    --bg-light: #F8F9FA;
    --border-color: #E1E8ED;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 16px rgba(0, 0, 0, 0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* Language Switcher */
.language-switcher {
    position: relative;
    display: flex;
    gap: 8px;
    justify-content: center;
    background: rgba(255, 255, 255, 0.95);
    padding: 8px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
    margin: 0 auto 40px auto;
    width: fit-content;
}

.lang-btn {
    padding: 8px 16px;
    border: 2px solid var(--border-color);
    background: transparent;
    color: var(--text-color);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
}

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

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

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #FFF5F0 0%, #FFFFFF 100%);
    padding: 80px 20px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(255, 107, 53, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 20s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }
    50% {
        transform: translate(-30px, -30px) rotate(180deg);
    }
}

.hero-content {
    display: flex;
    align-items: center;
    gap: 60px;
    max-width: 1200px;
    position: relative;
    z-index: 1;
}

.hero-logo {
    flex-shrink: 0;
    animation: fadeInUp 0.8s ease;
}

.app-logo {
    width: 280px;
    height: auto;
    display: block;
    object-fit: contain;
    cursor: pointer;
    transition: transform 0.3s ease;
}

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

.hero-text {
    flex: 1;
    text-align: left;
}

.logo {
    margin-bottom: 20px;
    text-align: left;
}

.app-name {
    font-size: 4rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -2px;
    margin-bottom: 10px;
    animation: fadeInUp 0.8s ease;
}

.tagline {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 30px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.description {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.sub-description {
    font-size: 1.1rem;
    color: var(--text-color);
    font-weight: 500;
    margin-bottom: 40px;
    animation: fadeInUp 0.8s ease 0.6s both;
}

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

/* Download Buttons */
.download-buttons {
    display: flex;
    gap: 20px;
    justify-content: flex-start;
    flex-wrap: wrap;
    margin-top: 40px;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    background: var(--text-color);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
    min-width: 220px;
    justify-content: center;
}

.download-btn:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.download-btn.app-store {
    background: #F5F5F7;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.download-btn.app-store:hover {
    background: #E8E8ED;
    border-color: var(--primary-color);
}

.download-btn.google-play {
    background: #F5F5F7;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.download-btn.google-play:hover {
    background: #E8E8ED;
    border-color: var(--primary-color);
}

.download-btn svg {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

/* Screenshots Section */
.screenshots {
    padding: 100px 20px;
    background: var(--bg-light);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: var(--text-color);
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.screenshot-placeholder {
    background: white;
    border-radius: 20px;
    padding: 60px 40px;
    text-align: center;
    box-shadow: var(--shadow);
    border: 2px dashed var(--border-color);
    min-height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.screenshot-placeholder p {
    color: var(--text-light);
    font-size: 1.2rem;
}

.screenshot-item {
    background: transparent;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
}

.screenshot-item:hover {
    transform: translateY(-4px);
    opacity: 0.9;
}

.screenshot-item img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
}

/* Contact Section */
.contact {
    padding: 100px 20px;
    background: var(--bg-color);
    text-align: center;
}

.contact-description {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.whatsapp-btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 40px;
    background: #25D366;
    color: white;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.whatsapp-btn:hover {
    background: #20BA5A;
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.whatsapp-btn svg {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
}

/* Lightbox Modal */
.lightbox {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    animation: fadeIn 0.3s ease;
}

.lightbox.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    animation: zoomIn 0.3s ease;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 90vh;
    width: auto;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: white;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10000;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
}

.lightbox-close:hover {
    background: rgba(0, 0, 0, 0.8);
    transform: rotate(90deg);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes zoomIn {
    from {
        transform: scale(0.8);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

/* Footer */
.footer {
    background: var(--text-color);
    color: white;
    padding: 40px 20px;
    text-align: center;
}

.footer-text {
    font-size: 1rem;
    margin-bottom: 10px;
    opacity: 0.9;
}

.footer-developer {
    font-size: 0.9rem;
    opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 768px) {
    .language-switcher {
        margin: 0 auto 30px auto;
        padding: 6px;
    }

    .lang-btn {
        padding: 6px 12px;
        font-size: 12px;
    }

    .hero-content {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }

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

    .logo {
        text-align: center;
    }

    .app-logo {
        width: 200px;
        height: auto;
    }

    .app-name {
        font-size: 2.5rem;
    }

    .tagline {
        font-size: 1.8rem;
    }

    .description {
        font-size: 1.1rem;
    }

    .sub-description {
        font-size: 1rem;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }

    .download-btn {
        width: 100%;
        max-width: 280px;
    }

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

    .screenshots-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .contact-description {
        font-size: 1.1rem;
    }

    .whatsapp-btn {
        padding: 16px 32px;
        font-size: 1rem;
    }

    .lightbox-close {
        top: 10px;
        right: 15px;
        width: 40px;
        height: 40px;
        font-size: 30px;
    }

    .lightbox-content {
        max-width: 95%;
        max-height: 85%;
    }
}

@media (max-width: 480px) {
    .app-name {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1.5rem;
    }

    .hero {
        padding: 60px 20px;
    }
}