/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Custom Font */
@font-face {
    font-family: "Doto";
    src: url("../fonts/Doto-Black.ttf") format("truetype");
    font-weight: 900;
    font-display: swap;
}

:root {
    --primary-color: #ff6699;
    --primary-hover: #e6478a;
    --secondary-color: #8e8e93;
    --background: #ffffff;
    --surface: #f2f2f7;
    --text-primary: #1c1c1e;
    --text-secondary: #8e8e93;
    --border: #e5e5ea;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-strong: rgba(0, 0, 0, 0.15);
    --border-radius: 12px;
    --border-radius-small: 8px;
    --spacing-xs: 8px;
    --spacing-sm: 16px;
    --spacing-md: 24px;
    --spacing-lg: 32px;
    --spacing-xl: 48px;
    --spacing-xxl: 64px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --background: #000000;
        --surface: #1c1c1e;
        --text-primary: #ffffff;
        --text-secondary: #8e8e93;
        --border: #38383a;
        --shadow: rgba(255, 255, 255, 0.1);
        --shadow-strong: rgba(255, 255, 255, 0.15);
    }
}

body {
    font-family:
        -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto,
        sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

/* Header and Navigation */
.header {
    background-color: var(--background);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
    position: relative;
}

@media (min-width: 768px) {
    .nav {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
}

.nav-brand h2 {
    font-family:
        "Doto",
        -apple-system,
        BlinkMacSystemFont,
        "SF Pro Display",
        sans-serif;
    font-size: 28px;
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.nav-links {
    display: none;
    gap: var(--spacing-md);
}

.mobile-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-primary);
    cursor: pointer;
    padding: 0;
    margin: -4px;
    border-radius: 50%;
    transition: all 0.2s ease;
    position: relative;
    width: 48px;
    height: 48px;
    -webkit-tap-highlight-color: transparent;
}

.mobile-menu-toggle::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: 50%;
    background: transparent;
    transition: background-color 0.2s ease;
    pointer-events: none;
}

.mobile-menu-toggle:active::before {
    background-color: rgba(255, 102, 153, 0.15);
}

.mobile-menu-toggle:active {
    color: var(--primary-color);
    transform: scale(0.95);
}

.mobile-menu-toggle:focus {
    outline: none;
}

.mobile-menu-toggle:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--background);
    border-top: 1px solid var(--border);
    padding: var(--spacing-md);
    box-shadow: 0 4px 12px var(--shadow);
    z-index: 10;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex !important;
        flex-direction: row;
        position: static;
        background-color: transparent;
        border-top: none;
        padding: 0;
        box-shadow: none;
    }

    .mobile-menu-toggle {
        display: none;
    }
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: color 0.2s ease;
    padding: 12px 16px;
    margin: -8px -12px;
    border-radius: 8px;
    position: relative;
    display: block;
    -webkit-tap-highlight-color: transparent;
}

.nav-links a::before {
    content: "";
    position: absolute;
    top: -6px;
    left: -6px;
    right: -6px;
    bottom: -6px;
    border-radius: 12px;
    background: transparent;
    transition: background-color 0.2s ease;
    pointer-events: none;
}

.nav-links a:active::before {
    background-color: rgba(255, 102, 153, 0.15);
}

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

/* Hero Section */
.hero {
    text-align: center;
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(
        135deg,
        var(--surface) 0%,
        var(--background) 100%
    );
}

.hero h1 {
    font-size: 48px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(
        135deg,
        var(--text-primary) 0%,
        var(--secondary-color) 100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-icon {
    width: 120px;
    height: 120px;
    border-radius: 26px;
    margin: 0 auto var(--spacing-md);
    display: block;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
}

.hero-icon:hover {
    transform: translateY(-2px);
}

.hero-subtitle {
    font-size: 28px;
    font-weight: 600;
    color: var(--text-primary);
    max-width: 800px;
    margin: 0 auto var(--spacing-md);
    line-height: 1.3;
    text-align: center;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 32px;
    }

    .hero-icon {
        width: 100px;
        height: 100px;
        border-radius: 22px;
    }

    .hero-subtitle {
        font-size: 22px;
        max-width: 90%;
    }

    .hero-description {
        max-width: 95%;
        text-align: left;
    }

    .hero-description p {
        font-size: 15px;
        margin: 0;
    }
}

.download-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.download-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.play-store-button {
    display: inline-block;
    transition: transform 0.2s ease;
    overflow: hidden;
}

.play-store-button:hover {
    transform: translateY(-2px);
}

.play-store-button img {
    height: 60px;
    width: auto;
    display: block;
}

.version-label {
    font-size: 15px;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
    margin-top: 2px;
}

.hero-description {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.hero-description p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.6;
    margin: 0 0 8px 0;
}

.hero-description p:last-child {
    margin-bottom: 0;
}

@media (max-width: 768px) {
    .hero-description {
        font-size: 16px;
    }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Contact Button */
.support .btn-outline {
    background-color: transparent;
    color: #ff6699;
    border: 2px solid #ff6699;
    padding: 12px 24px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.support .btn-outline:hover {
    background-color: #ff6699;
    color: white;
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 102, 153, 0.25);
}

/* Device Gallery */
.devices {
    padding: var(--spacing-lg) 0;
    background-color: #2c2c2e;
}

.device-gallery {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.device-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 0 0 auto;
}

.device-image {
    height: 300px;
    width: auto;
    object-fit: contain;
}

.device-item span {
    font-weight: 600;
    color: #e5e5ea;
    margin-top: var(--spacing-xs);
}

/* Responsive adjustments for device gallery */
@media (max-width: 768px) {
    .device-gallery {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }

    .device-image {
        width: auto;
        height: auto;
        max-width: min(300px, calc(100vw - 64px));
        max-height: 400px;
        object-fit: contain;
    }
}

@media (max-width: 480px) {
    .device-image {
        max-width: min(250px, calc(100vw - 48px));
        max-height: 350px;
    }
}

/* Features Section */
.features {
    padding: var(--spacing-xxl) 0;
}

.features h2 {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

.feature {
    margin-bottom: var(--spacing-lg);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.feature:last-child {
    margin-bottom: 0;
}

.feature h3 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.feature p {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Services Section */
.partners {
    padding: var(--spacing-xxl) 0;
    text-align: center;
    background-color: var(--surface);
}

.partners h2 {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

.services-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    justify-content: center;
    max-width: 800px;
    margin: 0 auto;
}

.services-grid span {
    background-color: var(--surface);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--border-radius-small);
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--border);
}

.partners-grid {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    max-width: 700px;
    margin: 0 auto;
}

.partner-card {
    flex: 1;
    text-decoration: none;
    background-color: var(--background);
    border: 2px solid var(--border);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    color: inherit;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.partner-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    border-radius: var(--border-radius);
    background: linear-gradient(
        135deg,
        transparent 0%,
        rgba(255, 255, 255, 0.1) 100%
    );
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.partner-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 35px var(--shadow);
}

.partner-card:hover::before {
    opacity: 1;
}

.partner-logo {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: 2px;
    margin-bottom: 6px;
    line-height: 1.1;
    transition: transform 0.3s ease;
}

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

.partner-tagline {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-bottom: 10px;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.partner-card:hover .partner-tagline {
    opacity: 0.9;
}

.partner-description {
    font-size: 13px;
    color: var(--text-secondary);
    font-style: italic;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.partner-card:hover .partner-description {
    opacity: 1;
}

.genki-brand .partner-logo {
    color: #ff4444;
    text-shadow: 0 2px 8px rgba(255, 68, 68, 0.3);
}

.genki-brand .partner-tagline {
    color: var(--text-secondary);
}

.genki-brand:hover {
    border-color: #ff4444;
    box-shadow: 0 12px 35px rgba(255, 68, 68, 0.2);
}

.genki-brand::before {
    background: linear-gradient(
        135deg,
        rgba(255, 68, 68, 0.05) 0%,
        rgba(255, 68, 68, 0.1) 100%
    );
}

.hagibis-brand .partner-logo {
    color: #0066cc;
    text-shadow: 0 2px 8px rgba(0, 102, 204, 0.3);
}

.hagibis-brand .partner-tagline {
    color: var(--text-secondary);
}

.hagibis-brand:hover {
    border-color: #0066cc;
    box-shadow: 0 12px 35px rgba(0, 102, 204, 0.2);
}

.hagibis-brand::before {
    background: linear-gradient(
        135deg,
        rgba(0, 102, 204, 0.05) 0%,
        rgba(0, 102, 204, 0.1) 100%
    );
}

@media (max-width: 768px) {
    .partners-grid {
        flex-direction: column;
        align-items: center;
    }

    .partner-card {
        width: 100%;
        max-width: 320px;
    }

    .partner-logo {
        font-size: 22px;
        letter-spacing: 2px;
    }
}

/* Support Section */
.support {
    padding: var(--spacing-lg) 0;
}

.support h2 {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.support-grid {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}

.support-grid .support-item {
    flex: 0 0 calc(33.333% - var(--spacing-lg));
    max-width: 350px;
}

@media (max-width: 768px) {
    .support-grid {
        flex-direction: column;
        align-items: center;
    }

    .support-grid .support-item {
        flex: none;
        width: 100%;
        max-width: 400px;
    }
}

.support-item {
    text-align: center;
}

/* FAQ Section */
.faq {
    padding: var(--spacing-xxl) 0;
}

.faq h2 {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

.faq-item {
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
}

.faq-item h4 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.faq-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Privacy Section */
.privacy {
    padding: var(--spacing-xxl) 0;
    background-color: var(--surface);
}

.privacy h2 {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

.privacy-content {
    max-width: 800px;
    margin: 0 auto;
}

.privacy-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    color: var(--text-primary);
}

.privacy-content h3:first-child {
    margin-top: 0;
}

.privacy-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

/* Social Section */
.social {
    padding: var(--spacing-xxl) 0;
}

.social h2 {
    font-size: 32px;
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

.social-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    max-width: 600px;
    margin: 0 auto;
}

.social-item {
    text-align: center;
}

.social-item h4 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.social-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
}

.social-link:hover {
    color: var(--primary-hover);
}

/* Footer */
.footer {
    background-color: var(--surface);
    border-top: 1px solid var(--border);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer p {
    color: var(--text-secondary);
    margin: 0;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s ease;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        padding: var(--spacing-xl) 0;
    }

    .play-store-button img {
        height: 50px;
    }

    .download-buttons {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-md);
    }

    .devices {
        padding: var(--spacing-md) 0;
    }

    .features,
    .partners,
    .support,
    .faq,
    .privacy,
    .social {
        padding: var(--spacing-xl) 0;
    }

    .features h2,
    .partners h2,
    .support h2,
    .faq h2,
    .privacy h2 {
        font-size: 28px;
    }
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Focus styles for accessibility */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}