/* --- FONDO ANIMADO --- */
.fixed-bg {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: -1;
}

.bg-grid {
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

.glow-orb {
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.2;
    animation: float 10s infinite ease-in-out;
}

.purple { background: var(--primary-purple); top: -200px; left: -100px; }
.cyan { background: var(--primary-cyan); bottom: -200px; right: -100px; animation-delay: 5s; }

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, 50px); }
}

/* --- NAVBAR --- */
.navbar {
    position: fixed;
    top: 0; width: 100%;
    z-index: 100;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

.nav-content {
    height: 70px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
}
.dot { color: var(--primary-cyan); }

/* --- HERO SECTION --- */
.hero {
    min-height: 90vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding-top: 80px;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 4.5rem); /* Responsivo */
    line-height: 1.1;
    margin-bottom: 1rem;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
    max-width: 600px;
}

/* Input Claimer (Estilo Linktree Futurista) */
.username-claimer {
    display: flex;
    align-items: center;
    padding: 8px;
    border-radius: 100px;
    width: 100%;
    max-width: 500px;
    transition: border-color 0.3s;
}

.username-claimer:focus-within {
    border-color: var(--primary-cyan);
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.15);
}

.prefix {
    padding-left: 20px;
    color: var(--text-muted);
    font-weight: 600;
}

#usernameInput {
    background: transparent;
    border: none;
    color: white;
    flex: 1;
    padding: 15px 10px;
    font-size: 1rem;
    outline: none;
    font-family: var(--font-body);
}

.input-feedback {
    height: 20px;
    margin-top: 10px;
    font-size: 0.9rem;
    color: #ff4444;
}

/* --- FEATURES GRID --- */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 100px;
}

.feature-card {
    padding: 30px;
    border-radius: 20px;
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-cyan);
}

.feature-card .icon {
    font-size: 2rem;
    margin-bottom: 15px;
}

/* Animaciones de entrada */
.animate-up {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s forwards ease-out;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }

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