:root {
    /* Define base variables that don't change or default light theme */
    --bg-color: #FAFAFA;
    --text-color: #1A1A1A;
    --accent-color: #6B9AE8;
    /* Soft baby blue */
    --accent-soft: #E6F0FF;
    --card-bg: #FFFFFF;
    --border-color: #E5E5E5;
    --font-main: 'Outfit', sans-serif;
    --max-width: 900px;
}

/* System Dark Mode */
@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #111111;
        --text-color: #F0F0F0;
        --card-bg: #1C1C1E;
        --border-color: #333333;
        --accent-soft: #1E2A3B;
    }
}

/* Hard-coded Light Mode Override */
[data-theme="light"] {
    --bg-color: #FAFAFA;
    --text-color: #1A1A1A;
    --card-bg: #FFFFFF;
    --border-color: #E5E5E5;
    --accent-soft: #E6F0FF;
}

/* Hard-coded Dark Mode Override */
[data-theme="dark"] {
    --bg-color: #111111;
    --text-color: #F0F0F0;
    --card-bg: #1C1C1E;
    --border-color: #333333;
    --accent-soft: #1E2A3B;
}

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

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: opacity 0.2s;
}

a:hover {
    opacity: 0.8;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.logo {
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: -0.02em;
}

/* Navbar & Menu */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-item {
    font-size: 0.95rem;
    font-weight: 500;
}

/* Icons & Buttons */
.nav-icons {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-left: 1rem;
    padding-right: 1rem;
    border-left: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    border-radius: 8px;
    transition: background 0.2s;
    font-family: inherit;
    font-weight: 600;
    font-size: 0.9rem;
}

.icon-btn:hover {
    background: var(--accent-soft);
}

/* Theme Toggle Icons */
.sun-icon {
    display: none;
}

.moon-icon {
    display: block;
}

/* If dark mode is active (system or manual), swap icons */
@media (prefers-color-scheme: dark) {
    .sun-icon {
        display: block;
    }

    .moon-icon {
        display: none;
    }
}

[data-theme="dark"] .sun-icon {
    display: block;
}

[data-theme="dark"] .moon-icon {
    display: none;
}

[data-theme="light"] .sun-icon {
    display: none;
}

[data-theme="light"] .moon-icon {
    display: block;
}


/* Language Dropdown */
.lang-dropdown {
    position: relative;
}

.lang-menu {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 0.5rem;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.5rem;
    display: flex;
    flex-direction: column;
    width: 120px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s ease;
    z-index: 100;
}

.lang-dropdown:hover .lang-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-menu a {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    border-radius: 8px;
    display: block;
}

.lang-menu a:hover {
    background: var(--accent-soft);
    opacity: 1;
}

.nav-cta {
    font-weight: 600;
    color: var(--accent-color);
}

.hero {
    text-align: center;
    padding: 6rem 1rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.hero-label {
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.hero-title {
    font-size: 4rem;
    line-height: 1.1;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: #888;
    margin-bottom: 3rem;
    font-weight: 300;
}

.app-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 4rem;
}

.app-store-btn {
    display: flex;
    align-items: center;
    background-color: var(--text-color);
    color: var(--bg-color);
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    gap: 0.75rem;
    transition: transform 0.2s;
}

.app-store-btn:hover {
    transform: translateY(-2px);
    opacity: 1;
    /* Reset hover opacity slightly */
}

.btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1.2;
}

.btn-text span:first-child {
    font-size: 0.7rem;
    opacity: 0.8;
}

.btn-store-name {
    font-size: 1.1rem;
    font-weight: 600;
}

.hero-visual {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 3rem;
    perspective: 1000px;
}

.app-screenshot {
    width: 220px;
    /* Adjust based on desired size */
    height: auto;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 4px solid var(--card-bg);
    transition: all 0.3s ease;
    opacity: 0.9;
    /* Slight opacity to make hover pop more, or keep 1 */
    transform: scale(1);
}

/* Make all images stand equally by default */
.app-screenshot:nth-child(1),
.app-screenshot:nth-child(2),
.app-screenshot:nth-child(3) {
    transform: none;
    opacity: 1;
}

/* Hover effect: Scale up the hovered image */
.app-screenshot:hover {
    transform: translateY(-10px) scale(1.1);
    z-index: 10;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

@media (max-width: 768px) {
    .app-screenshot {
        width: 140px;
    }
}

/* Sections */
section {
    padding: 5rem 1rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.section-header {
    margin-bottom: 3rem;
    text-align: center;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Features Grid */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem;
    background: var(--card-bg);
    border-radius: 24px;
    border: 1px solid var(--border-color);
}

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

.feature-card p {
    color: #666;
    line-height: 1.7;
}

/* How It Works */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    text-align: center;
}

.step-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--border-color);
    margin-bottom: 1rem;
    font-family: monospace;
}

.step h3 {
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
}

.step p {
    color: #666;
    font-size: 0.95rem;
}

/* Testimonials */
.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.testimonial {
    background: var(--accent-soft);
    padding: 2rem;
    border-radius: 20px;
}

.testimonial p {
    font-style: italic;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.testimonial cite {
    font-weight: 600;
    font-style: normal;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* FAQ */
.faq-grid {
    display: grid;
    gap: 1.5rem;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.5rem;
}

.faq-item h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.faq-item p {
    color: #666;
}

/* Bottom CTA */
.bottom-cta {
    text-align: center;
    padding: 8rem 1rem;
}

.bottom-cta h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    letter-spacing: -0.03em;
}

.bottom-cta p {
    margin-bottom: 3rem;
    color: #888;
    font-size: 1.2rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem;
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    color: #888;
    font-size: 0.9rem;
}

.separator {
    color: var(--border-color);
}

/* Responsive */
/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-color);
    cursor: pointer;
    padding: 0.5rem;
}

/* Responsive Styles */
@media (max-width: 768px) {
    :root {
        --spacing-unit: 1rem;
    }

    .navbar {
        padding: 1rem 1.5rem;
    }

    .mobile-menu-btn {
        display: block;
        z-index: 1001;
        /* Above menu */
    }

    /* Mobile Navigation Overlay */
    .nav-links {
        position: fixed;
        top: 0;
        right: 0;
        height: 100vh;
        width: 70%;
        max-width: 300px;
        background: var(--card-bg);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        box-shadow: -5px 0 30px rgba(0, 0, 0, 0.1);
        transform: translateX(100%);
        /* Hidden by default */
        transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 1000;
        padding: 2rem;
    }

    .nav-links.open {
        transform: translateX(0);
    }

    .nav-icons {
        border: none;
        padding: 0;
        margin-top: 1rem;
        width: 100%;
        justify-content: center;
    }

    /* .lang-dropdown { } */

    .lang-menu {
        /* Adjust for mobile if needed, usually centering helps */
        left: 50%;
        right: auto;
        transform: translateX(-50%) translateY(-10px);
    }

    .lang-dropdown:hover .lang-menu {
        transform: translateX(-50%) translateY(0);
    }

    /* Hero Tuning */
    .hero {
        padding-top: 3rem;
        padding-bottom: 3rem;
        overflow: hidden;
        /* Hide overflow from horizontal graphics */
    }

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

    .hero-subtitle {
        font-size: 1.1rem;
        padding: 0 1rem;
    }

    /* Hero Images: Simple Horizontal Scroll on Mobile */
    .hero-visual {
        display: flex;
        flex-direction: row;
        /* Keep row for scroll */
        justify-content: flex-start;
        overflow-x: auto;
        scroll-snap-type: x mandatory;
        padding: 2rem 1.5rem;
        margin-top: 2rem;
        gap: 2rem;
        /* Hide scrollbar */
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .hero-visual::-webkit-scrollbar {
        display: none;
    }

    .app-screenshot {
        width: 240px;
        /* Bigger visual on mobile */
        min-width: 240px;
        scroll-snap-align: center;
    }

    /* Sections Padding */
    section {
        padding: 4rem 1.5rem;
    }

    .feature-grid,
    .testimonial-grid {
        grid-template-columns: 1fr;
        /* Single column */
        gap: 1.5rem;
    }
}

/* Language Switcher */
.lang-switch {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.9rem;
    margin-left: 0.5rem;
    margin-right: 0.5rem;
}

.lang-switch a {
    opacity: 0.5;
    font-weight: 400;
}

.lang-switch a:hover {
    opacity: 1;
}

.lang-switch .active {
    font-weight: 700;
    opacity: 1;
    cursor: default;
}

.lang-switch .sep {
    opacity: 0.3;
}

@media (max-width: 768px) {
    .lang-switch {
        /* Keep visible on mobile if space permits, or adjust */
        margin: 0;
    }
}