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

html, body {
    width: 100%;
    height: 100%;
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

/* Background Video */
.background-video {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    object-fit: cover;
    object-position: center;
    z-index: -2;
    pointer-events: none;
}

/* Dark Overlay */
.overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    background: rgba(0, 0, 0, 0.45);
    z-index: -1;
    pointer-events: none;
}

/* Content */
.content {
    position: relative;
    min-height: 100vh;
    min-height: 100dvh;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: white;
    padding: clamp(20px, 5vw, 40px);
}

.content h1 {
    font-size: clamp(2rem, 8vw, 3.75rem);
    line-height: 1.2;
    margin-bottom: 16px;
    font-weight: 700;
}

.content p {
    font-size: clamp(1rem, 4vw, 1.375rem);
    line-height: 1.5;
    margin-bottom: 25px;
    max-width: 600px;
    opacity: 0.95;
}

.content button {
    padding: 14px 32px;
    border: none;
    border-radius: 8px;
    background: #007bff;
    color: white;
    font-size: clamp(0.95rem, 3.5vw, 1.125rem);
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.2s ease;
    touch-action: manipulation;
}

.content button:hover,
.content button:active {
    background: #0056b3;
    transform: scale(1.02);
}