@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;700;900&display=swap');

:root {
    --brand-dark: #0A0A0A;
    --brand-light: #EAEAEA;
    --brand-accent: #00BFFF; /* Deep Sky Blue */
    --brand-gray: #888888;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--brand-dark);
    color: var(--brand-light);
    font-family: 'Inter', sans-serif;
}

.video-segment {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
}

.video-segment.active {
    opacity: 1;
}

.section-heading {
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: -0.05em;
    color: white;
    background: linear-gradient(90deg, var(--brand-accent), white);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
    margin-bottom: 1rem;
}

.section-subheading {
    font-size: 1.25rem;
    line-height: 1.75;
    color: var(--brand-gray);
    max-width: 70ch;
    margin-left: auto;
    margin-right: auto;
}

.content-section {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.content-section.visible {
    opacity: 1;
    transform: translateY(0);
}

.cta-button {
    display: inline-block;
    margin-top: 2rem;
    padding: 1rem 2.5rem;
    background-color: var(--brand-accent);
    color: var(--brand-dark);
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 9999px;
    border: 2px solid var(--brand-accent);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    transform-origin: center;
}

.cta-button:hover {
    background-color: transparent;
    color: var(--brand-accent);
    transform: scale(1.05);
    box-shadow: 0 0 25px rgba(0, 191, 255, 0.4);
}

/* Preloader styles */
.loader {
    border: 4px solid #f3f3f330;
    border-top: 4px solid var(--brand-accent);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1.5s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@media (min-width: 768px) {
    .section-heading {
        font-size: 3.5rem;
    }
}