:root {
    --accent-color: #010101;
    --background: #F7F6F9;
    --gray: #706F6C;
    --pure-white: #FFFFFF;
    --font-title: 'IBM Plex Serif', serif;
    --font-body: 'Inter', sans-serif;
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--background);
    color: var(--accent-color);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-title);
    color: var(--accent-color);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--gray);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    padding: 0 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(247, 246, 249, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid rgba(112, 111, 108, 0.1);
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.app-icon {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    object-fit: cover;
}

.app-name {
    font-family: var(--font-title);
    font-size: 1.25rem;
    font-weight: 600;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 20px;
}

.store-buttons-nav {
    display: flex;
    gap: 12px;
}

.nav-store-btn {
    height: 36px;
    display: block;
}

.nav-store-btn img {
    height: 100%;
    width: auto;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 24px;
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: #222;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(1, 1, 1, 0.2);
}

.btn-block {
    width: 100%;
}

/* Sections */
.vh-section {
    min-height: 100vh;
    width: 100vw;
    display: flex;
    align-items: center;
    padding: 100px 5% 40px; /* Offset for navbar */
}

/* Hero Section */
.hero-section {
    justify-content: space-between;
    gap: 40px;
    position: relative;
    overflow: hidden;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.hero-desc {
    color: var(--gray);
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
}

.store-buttons {
    display: flex;
    gap: 16px;
}

.hero-stores .store-btn img {
    height: 50px;
}

.hero-images {
    flex: 1;
    position: relative;
    height: 600px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.mockup {
    position: absolute;
    transition: var(--transition);
}

.mockup img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
}

.mockup-center {
    width: 280px;
    height: 570px;
    z-index: 3;
}

.mockup-left {
    width: 240px;
    height: 490px;
    left: 0;
    transform: translateX(10%) rotate(-5deg);
    z-index: 2;
    opacity: 0.85;
}

.mockup-right {
    width: 240px;
    height: 490px;
    right: 0;
    transform: translateX(-10%) rotate(5deg);
    z-index: 1;
    opacity: 0.85;
}

/* Interactive Hover for Mockups */
.hero-images:hover .mockup-left {
    transform: translateX(-10%) rotate(-8deg);
}
.hero-images:hover .mockup-right {
    transform: translateX(10%) rotate(8deg);
}
.hero-images:hover .mockup-center {
    transform: scale(1.05);
}

/* Contact Section */
.contact-section {
    background-color: var(--pure-white);
    justify-content: center;
    align-items: center;
}

.contact-container {
    display: flex;
    width: 100%;
    max-width: 1100px;
    background: var(--background);
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
}

.contact-text {
    flex: 1;
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-form-wrapper {
    flex: 1;
    padding: 60px;
    background: var(--pure-white);
}

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

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--accent-color);
}

.input-group input,
.input-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid rgba(112, 111, 108, 0.3);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--background);
}

.input-group input:focus,
.input-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    background-color: var(--pure-white);
    box-shadow: 0 0 0 3px rgba(1, 1, 1, 0.1);
}

.form-status {
    margin-top: 1rem;
    font-weight: 500;
    text-align: center;
}
.status-success { color: #2e7d32; }
.status-error { color: #d32f2f; }

/* Footer */
.footer {
    padding: 40px 5%;
    background-color: var(--background);
    border-top: 1px solid rgba(112, 111, 108, 0.1);
}

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

.footer-left {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--gray);
    font-size: 0.9rem;
}

.footer-logo {
    width: 24px;
    height: 24px;
    border-radius: 4px;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: var(--gray);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-color);
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in-up.visible,
.fade-in-right.visible {
    opacity: 1;
    transform: translate(0);
}



/* Responsive Design */
@media (max-width: 992px) {
    .hero-section {
        flex-direction: column;
        justify-content: flex-start;
        text-align: center;
        padding-top: 120px;
    }
    
    .hero-content {
        flex: none;
        max-width: 100%;
        margin-bottom: 40px;
    }
    
    .store-buttons {
        justify-content: center;
    }
    
    .hero-images {
        flex: none;
        height: 400px;
        width: 100%;
    }
    
    .mockup-center {
        width: 200px;
        height: 410px;
    }
    
    .mockup-left {
        width: 170px;
        height: 350px;
        transform: translateX(20%) rotate(-5deg);
    }
    
    .mockup-right {
        width: 170px;
        height: 350px;
        transform: translateX(-20%) rotate(5deg);
    }
    
    .contact-container {
        flex-direction: column;
    }
    
    .contact-text, .contact-form-wrapper {
        padding: 40px;
    }
}

@media (max-width: 768px) {
    .store-buttons-nav {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .store-buttons.hero-stores {
        flex-direction: column;
        align-items: center;
    }
}