:root {
    --bg: #ffffff;
    --text: #111111;
    --text-sec: #666666;
    --accent: #007aff;
    --card-bg: #f5f5f7;
    --card-border: transparent;
    --container-width: 900px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #000000;
        --text: #ffffff;
        --text-sec: #888888;
        --accent: #0a84ff;
        --card-bg: #1c1c1e;
        --card-border: rgba(255,255,255,0.06);
    }
}

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

::selection {
    background: var(--accent);
    color: #ffffff;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header & Nav ===== */
header {
    padding: 28px 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 800;
    font-size: 24px;
    letter-spacing: -0.5px;
}

.brand-mark {
    display: flex;
    align-items: center;
    gap: 0;
}

.brand-mark a {
    display: flex;
    align-items: center;
}

.brand-mark img {
    width: 72px;
    height: 72px;
    object-fit: contain;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

.nav-links a {
    color: var(--text-sec);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* ===== Hero ===== */
.hero {
    padding: 48px 0;
}

h1 {
    font-size: 42px;
    font-weight: 800;
    letter-spacing: -1.5px;
    line-height: 1.1;
    margin-bottom: 20px;
}

.highlight {
    color: var(--accent);
}

.eyebrow {
    color: var(--accent);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 14px;
}

.subtitle {
    font-size: 19px;
    color: var(--text-sec);
    max-width: 600px;
    line-height: 1.6;
}

/* ===== Apps Grid ===== */
.apps {
    padding-bottom: 56px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
    gap: 20px;
}

.app-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 32px 20px;
    text-decoration: none;
    color: inherit;
    transition: transform 0.22s cubic-bezier(0.2, 0, 0.2, 1), box-shadow 0.22s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.app-card:hover {
    transform: scale(1.04) translateY(-2px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
}

.app-card img {
    width: 72px;
    height: 72px;
    border-radius: 16px;
    margin-bottom: 16px;
    box-shadow: 0 6px 16px rgba(0,0,0,0.08);
}

.app-card h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 10px;
}

.badge {
    background: var(--bg);
    color: var(--accent);
    padding: 3px 10px;
    border-radius: 100px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ===== Social Links ===== */
.social-section {
    padding: 36px 0;
    border-top: 1px solid var(--card-bg);
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 28px;
}

.social-links a {
    color: var(--text-sec);
    font-size: 22px;
    transition: color 0.2s, transform 0.2s;
}

.social-links a:hover {
    color: var(--accent);
    transform: translateY(-2px);
}

/* ===== App Detail ===== */
.app-detail {
    padding: 48px 0;
}

.detail-header {
    display: flex;
    align-items: center;
    gap: 28px;
    margin-bottom: 40px;
}

.detail-header img {
    width: 110px;
    height: 110px;
    border-radius: 24px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.detail-info h1 {
    font-size: 36px;
    margin-bottom: 6px;
}

.app-screenshot-container {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 28px;
    padding: 32px;
    text-align: center;
    margin-bottom: 40px;
}

.app-screenshot-container img {
    max-width: 100%;
    max-height: 560px;
    border-radius: 16px;
}

.features-list {
    margin-bottom: 40px;
}

.features-list h2 {
    font-size: 22px;
    margin-bottom: 18px;
}

.features-list ul {
    list-style: none;
}

.features-list li {
    font-size: 17px;
    margin-bottom: 10px;
    padding-left: 24px;
    position: relative;
    color: var(--text-sec);
}

.features-list li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

.download-btn {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 14px 28px;
    border-radius: 100px;
    text-decoration: none;
    font-weight: 700;
    font-size: 17px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.download-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,122,255,0.25);
}

.app-store-badge {
    display: inline-block;
}

.app-store-badge img {
    width: 220px;
    height: 73px;
    vertical-align: middle;
    object-fit: contain;
}

.secondary-links {
    margin-top: 32px;
    display: flex;
    gap: 20px;
}

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

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

/* ===== Blog ===== */
.blog-hero {
    padding-top: 40px;
}

.blog-listing {
    padding-top: 0;
}

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

.blog-card {
    display: block;
    text-decoration: none;
    color: inherit;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 28px;
    transition: transform 0.22s cubic-bezier(0.2, 0, 0.2, 1), box-shadow 0.22s ease;
}

.blog-card:hover {
    transform: scale(1.01);
    box-shadow: 0 6px 24px rgba(0,0,0,0.06);
}

.blog-card h2 {
    font-size: 26px;
    line-height: 1.2;
    margin: 14px 0 12px;
}

.blog-card p {
    color: var(--text-sec);
    font-size: 16px;
    margin-bottom: 14px;
}

.blog-meta {
    color: var(--text-sec);
    font-size: 13px;
}

.blog-post-page {
    padding-bottom: 40px;
}

.blog-post {
    padding: 20px 0 40px;
}

.blog-post-header {
    margin-bottom: 36px;
}

.back-link {
    text-decoration: none;
    color: var(--text-sec);
    font-size: 14px;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--accent);
}

.blog-content {
    max-width: 760px;
}

.blog-content h2 {
    font-size: 28px;
    line-height: 1.2;
    margin: 36px 0 14px;
}

.blog-content h3 {
    font-size: 22px;
    line-height: 1.3;
    margin: 24px 0 10px;
}

.blog-content h4 {
    font-size: 17px;
    line-height: 1.4;
    margin: 18px 0 10px;
}

.blog-content p,
.blog-content li {
    font-size: 17px;
    color: var(--text);
    line-height: 1.8;
}

.blog-content p {
    margin-bottom: 16px;
}

.blog-content ul {
    padding-left: 22px;
    margin: 0 0 18px;
}

.blog-content li {
    margin-bottom: 8px;
}

.blog-content a {
    color: var(--accent);
}

.blog-cta {
    margin-top: 40px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 28px;
    text-align: center;
}

.blog-cta h2 {
    margin-top: 0;
}

.blog-cta-text {
    color: var(--text-sec) !important;
    margin-top: 14px;
}

/* ===== Values / Info Cards ===== */
.value-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 24px;
}

.value-card h3 {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
}

.value-card p {
    color: var(--text-sec);
    font-size: 15px;
    line-height: 1.5;
}

/* ===== Contact Section ===== */
.contact-section {
    padding-bottom: 48px;
}

.contact-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 20px;
    padding: 32px;
    text-align: center;
    max-width: 520px;
    margin: 0 auto;
}

.contact-card h2 {
    font-size: 22px;
    margin-bottom: 10px;
}

.contact-card p {
    color: var(--text-sec);
    font-size: 15px;
    margin-bottom: 20px;
    line-height: 1.5;
}

.contact-card a.email-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
}

.contact-card a.email-link:hover {
    text-decoration: underline;
}

/* ===== Footer ===== */
footer {
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid var(--card-border);
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 20px;
}

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

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

.footer-social {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.footer-social a {
    color: var(--text-sec);
    font-size: 18px;
    transition: color 0.2s, transform 0.2s;
}

.footer-social a:hover {
    color: var(--accent);
    transform: translateY(-2px);
}

footer p {
    font-size: 13px;
    color: var(--text-sec);
}

/* ===== Fade-in Animation ===== */
.fade-in {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 600px) {
    h1 {
        font-size: 32px;
    }
    .hero {
        padding: 36px 0;
    }
    .detail-header {
        flex-direction: column;
        text-align: center;
        gap: 16px;
    }
    .detail-header img {
        width: 88px;
        height: 88px;
    }
    .detail-info h1 {
        font-size: 28px;
    }
    .brand-mark img {
        width: 56px;
        height: 56px;
    }
    .nav-links {
        gap: 16px;
    }
    .nav-links a {
        font-size: 14px;
    }
    .grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 14px;
    }
    .app-card {
        padding: 24px 16px;
        border-radius: 16px;
    }
    .app-card img {
        width: 56px;
        height: 56px;
        border-radius: 14px;
    }
    .app-card h3 {
        font-size: 14px;
    }
    .blog-card {
        padding: 20px;
    }
    .blog-card h2 {
        font-size: 22px;
    }
    .blog-content h2 {
        font-size: 24px;
    }
    .blog-content h3 {
        font-size: 20px;
    }
    .blog-content p,
    .blog-content li {
        font-size: 16px;
    }
    .blog-cta {
        padding: 20px;
    }
    .footer-links {
        gap: 14px;
    }
}