:root {
    --primary: #00E5FF;
    --primary-dark: #00B8D4;
    --bg-dark: #0b0f14;
    --bg-surface: #111821;
    --text-primary: #f5f7fb;
    --text-secondary: #b7c0cc;
    --border: rgba(255, 255, 255, 0.08);
}

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

body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
    line-height: 1.6;
}

.gradient-bg {
    position: fixed;
    inset: 0;
    background: radial-gradient(circle at top, rgba(0, 229, 255, 0.15), transparent 55%), linear-gradient(180deg, #0b0f14 0%, #0a0c10 100%);
    z-index: -1;
}

.home-btn {
    position: fixed;
    top: 20px;
    left: 20px;
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    text-decoration: none;
    z-index: 1000;
    transition: all 0.3s;
}

.home-btn:hover {
    background: rgba(255,255,255,0.16);
    transform: scale(1.06);
}

.nav-links {
    position: fixed;
    top: 20px;
    left: 80px;
    display: flex;
    gap: 8px;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(10px);
    padding: 8px 15px;
    border-radius: 25px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-size: 13px;
    padding: 6px 12px;
    border-radius: 15px;
    transition: all 0.3s;
    opacity: 0.85;
}

.nav-links a:hover {
    opacity: 1;
    background: rgba(255, 255, 255, 0.15);
}

.lang-selector {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    max-width: 260px;
    justify-content: flex-end;
    z-index: 1000;
}

.lang-btn {
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.18);
    color: white;
    padding: 6px 10px;
    border-radius: 15px;
    cursor: pointer;
    font-size: 11px;
    transition: all 0.3s;
}

.lang-btn:hover, .lang-btn.active {
    background: white;
    color: #0b0f14;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 20px;
}

.hero-content { max-width: 860px; }

.logo-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 20px;
}

img.app-icon {
    width: 80px;
    height: 80px;
    border-radius: 18px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.title {
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 700;
    color: white;
    text-shadow: 0 4px 20px rgba(0,0,0,0.35);
}

.tagline {
    font-size: clamp(1.2rem, 3vw, 1.6rem);
    color: rgba(255,255,255,0.95);
    margin-bottom: 10px;
    font-weight: 500;
}

.subtitle {
    font-size: 1rem;
    color: rgba(255,255,255,0.8);
    max-width: 520px;
    margin: 0 auto 20px;
}

.steps-preview {
    font-size: 1.1rem;
    color: white;
    background: rgba(255,255,255,0.12);
    padding: 12px 28px;
    border-radius: 30px;
    display: inline-block;
    margin-bottom: 36px;
    backdrop-filter: blur(10px);
}

.cta-buttons { display: flex; gap: 15px; justify-content: center; flex-wrap: wrap; }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 30px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    font-size: 1rem;
}

.btn-primary {
    background: white;
    color: #0b0f14;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.3);
}

.btn-secondary {
    background: transparent;
    border: 2px solid white;
    color: white;
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.15);
}

.btn-large {
    padding: 16px 36px;
    font-size: 1.05rem;
}

.btn-icon { font-size: 18px; }

.features {
    padding: 80px 20px;
    text-align: center;
    background: var(--bg-surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.section-title {
    font-size: clamp(2rem, 5vw, 2.8rem);
    margin-bottom: 40px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    max-width: 1100px;
    margin: 0 auto;
}

.feature-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 18px;
    padding: 26px 22px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.25);
}

.feature-icon {
    font-size: 28px;
    margin-bottom: 10px;
}

.feature-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.showcase {
    padding: 80px 20px;
    text-align: center;
}

.showcase-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.showcase-step {
    background: rgba(255,255,255,0.04);
    border-radius: 18px;
    padding: 24px 20px;
    border: 1px solid rgba(255,255,255,0.06);
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(0,229,255,0.2);
    color: white;
    font-weight: 700;
    margin-bottom: 12px;
}

.final-cta {
    padding: 80px 20px 100px;
    text-align: center;
}

footer {
    padding: 30px 20px 50px;
    text-align: center;
    border-top: 1px solid var(--border);
    background: #0a0c10;
}

.footer-content {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-logo {
    display: inline-flex;
    gap: 10px;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.footer-links {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
}

.footer-links a:hover {
    color: white;
}

.copyright {
    color: #6e7681;
    font-size: 12px;
}

@media (max-width: 720px) {
    .nav-links {
        position: static;
        margin: 14px auto 0;
        width: fit-content;
    }
    .home-btn {
        position: static;
        margin: 20px auto 0;
    }
    .lang-selector {
        position: static;
        margin: 12px auto 0;
        justify-content: center;
    }
}