body {
    font-family: 'Arial', sans-serif;
    background-color: #ffffff;
    color: #343a40;
}

#demo-text {
    font-size: 2rem;
    font-weight: bold;
    color: #e10d0d;
    text-align: center;
    margin-top: 20px;
}

.text-select-accuont {
    font-size: 1.5rem;
    font-weight: bold;
    color: #0d6efd;
    text-align: center;
    margin-top: 20px;

}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

html {
    overflow-y: scroll;
}

.dropdown-menu.show {
    display: block !important;
}

#dropdown-menu {
    position: fixed;
    top: 30;
    right: 0;
    margin-right: 10px;
    width: 150px;
    height: auto;
    overflow: hidden;
    z-index: 999;
    background-color: rgba(0, 0, 0, 0.9);
}


#gallery img {
    width: 100%;
    height: 200px;
    /* cố định chiều cao */
    object-fit: cover;
    /* crop ảnh cho đẹp */
    border-radius: 10px;
    /* bo góc */
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    /* đổ bóng */
    transition: transform 0.3s ease;
}

#gallery img:hover {
    transform: scale(1.05);
    /* phóng to nhẹ khi hover */
}

#dropdown-menu ul {
    padding: 2rem 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.love-canvas-wrapper {
    position: relative;
    width: min(640px, 100%);
    aspect-ratio: 1 / 1;
    height: clamp(360px, 60vw, 640px);
    margin: 0 auto;
    border-radius: 36px;
    overflow: hidden;
    box-shadow: 0 32px 80px rgba(236, 72, 153, 0.35);
    border: 1px solid rgba(248, 113, 155, 0.16);
    background: radial-gradient(circle at 20% 20%, rgba(244, 114, 182, 0.35), transparent 55%),
        radial-gradient(circle at 80% 80%, rgba(59, 130, 246, 0.25), transparent 60%),
        linear-gradient(160deg, rgba(12, 18, 46, 0.95), rgba(31, 7, 31, 0.95));
}

.love-canvas-wrapper canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(5, 6, 20, 0.85);
    z-index: 0;
}

.love-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: clamp(1.5rem, 5vw, 3rem);
    background: linear-gradient(180deg, rgba(10, 10, 35, 0) 55%, rgba(23, 8, 26, 0.75));
    pointer-events: none;
    z-index: 1;
}

.love-overlay-note {
    font-size: clamp(2.8rem, 6vw, 4.2rem);
    font-weight: 700;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: #fecdd3;
    text-shadow: 0 18px 36px rgba(236, 72, 153, 0.6);
}