:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --bg: #0f0f14;
    --bg-card: #1a1a24;
    --bg-elevated: #22222f;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --border: rgba(255, 255, 255, 0.08);
    --success: #22c55e;
    --radius: 16px;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100dvh;
    overflow-x: hidden;
}

/* Arka plan efekti */
.bg-gradient {
    position: fixed;
    inset: 0;
    z-index: -1;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99, 102, 241, 0.25), transparent),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(139, 92, 246, 0.15), transparent),
        var(--bg);
}

.container {
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    padding: 0 1.25rem 3rem;
}

/* Header / Hero */
.hero {
    text-align: center;
    padding: 2.5rem 0 2rem;
}

.app-icon {
    width: 96px;
    height: 96px;
    border-radius: 22px;
    box-shadow: var(--shadow), 0 0 0 1px var(--border);
    object-fit: cover;
    margin-bottom: 1.25rem;
}

.app-icon-placeholder {
    width: 96px;
    height: 96px;
    border-radius: 22px;
    background: linear-gradient(135deg, var(--primary), #a855f7);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0 auto 1.25rem;
    box-shadow: var(--shadow);
}

.hero h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 0.35rem;
}

.tagline {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 1rem;
}

.meta-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.badge {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 0.3rem 0.75rem;
    font-size: 0.78rem;
    color: var(--text-muted);
}

/* İndir butonu */
.download-section {
    margin-bottom: 2rem;
}

.btn-download {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    width: 100%;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 14px;
    cursor: pointer;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.45);
    transition: transform 0.15s, box-shadow 0.15s;
    -webkit-tap-highlight-color: transparent;
}

.btn-download:hover,
.btn-download:active {
    transform: translateY(-1px);
    box-shadow: 0 6px 28px rgba(99, 102, 241, 0.55);
}

.btn-download:active {
    transform: scale(0.98);
}

.btn-download svg {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
}

.download-note {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.75rem;
}

.download-note.warning {
    color: #fbbf24;
}

/* Kartlar */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}

.card h2 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.description {
    color: var(--text-muted);
    font-size: 0.925rem;
    line-height: 1.7;
}

/* Özellikler */
.features-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.features-list li {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.features-list li::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--success);
    flex-shrink: 0;
}

/* Ekran görüntüleri */
.screenshots {
    display: flex;
    gap: 0.75rem;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.5rem;
    scrollbar-width: none;
}

.screenshots::-webkit-scrollbar {
    display: none;
}

.screenshot {
    flex: 0 0 160px;
    scroll-snap-align: start;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
    aspect-ratio: 9 / 19.5;
    background: var(--bg-elevated);
}

.screenshot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.screenshot-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.75rem;
    text-align: center;
    padding: 0.5rem;
}

/* Kurulum adımları */
.steps {
    counter-reset: step;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.steps li {
    counter-increment: step;
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.steps li::before {
    content: counter(step);
    background: var(--primary);
    color: #fff;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

/* Footer */
.footer {
    text-align: center;
    padding: 1.5rem 0 0;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.footer a {
    color: var(--primary-light);
    text-decoration: none;
}

/* iOS banner */
.ios-banner {
    background: rgba(251, 191, 36, 0.1);
    border: 1px solid rgba(251, 191, 36, 0.3);
    border-radius: 12px;
    padding: 0.875rem 1rem;
    margin-bottom: 1.25rem;
    font-size: 0.85rem;
    color: #fbbf24;
    display: none;
}

.ios-banner.show {
    display: block;
}

.ios-banner a {
    color: #fde68a;
    font-weight: 600;
}

/* Tablet / Desktop */
@media (min-width: 640px) {
    .container {
        max-width: 560px;
        padding: 0 2rem 4rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .app-icon,
    .app-icon-placeholder {
        width: 112px;
        height: 112px;
        border-radius: 26px;
    }

    .screenshot {
        flex: 0 0 180px;
    }
}