/* Bosh sahifa uchun uchib yuradigan geometrik shakllar */
.hero {
    position: relative;
    overflow: hidden;
}

.bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0; /* Hero text orqasida bo'lishi uchun */
    pointer-events: none;
}

.bg-shapes .shape {
    position: absolute;
    display: block;
    list-style: none;
    width: 20px;
    height: 20px;
    background: rgba(139, 92, 246, 0.2);
    animation: animate-shapes 25s linear infinite;
    bottom: -150px;
    border-radius: 4px;
}

.bg-shapes .shape:nth-child(1) {
    left: 25%;
    width: 80px;
    height: 80px;
    animation-delay: 0s;
}

.bg-shapes .shape:nth-child(2) {
    left: 10%;
    width: 20px;
    height: 20px;
    animation-delay: 2s;
    animation-duration: 12s;
    border-radius: 50%;
}

.bg-shapes .shape:nth-child(3) {
    left: 70%;
    width: 20px;
    height: 20px;
    animation-delay: 4s;
}

.bg-shapes .shape:nth-child(4) {
    left: 40%;
    width: 60px;
    height: 60px;
    animation-delay: 0s;
    animation-duration: 18s;
    border-radius: 50%;
}

.bg-shapes .shape:nth-child(5) {
    left: 65%;
    width: 20px;
    height: 20px;
    animation-delay: 0s;
}

.bg-shapes .shape:nth-child(6) {
    left: 75%;
    width: 110px;
    height: 110px;
    animation-delay: 3s;
    background: rgba(236, 72, 153, 0.15); /* Pinkish */
}

.bg-shapes .shape:nth-child(7) {
    left: 35%;
    width: 150px;
    height: 150px;
    animation-delay: 7s;
    border-radius: 50%;
}

.bg-shapes .shape:nth-child(8) {
    left: 50%;
    width: 25px;
    height: 25px;
    animation-delay: 15s;
    animation-duration: 45s;
}

.bg-shapes .shape:nth-child(9) {
    left: 20%;
    width: 15px;
    height: 15px;
    animation-delay: 2s;
    animation-duration: 35s;
    border-radius: 50%;
}

.bg-shapes .shape:nth-child(10) {
    left: 85%;
    width: 150px;
    height: 150px;
    animation-delay: 0s;
    animation-duration: 11s;
    background: rgba(14, 165, 233, 0.15); /* Blueish */
}

@keyframes animate-shapes {
    0% {
        transform: translateY(0) rotate(0deg);
        opacity: 1;
        border-radius: 0;
    }
    100% {
        transform: translateY(-1000px) rotate(720deg);
        opacity: 0;
        border-radius: 50%;
    }
}

/* Flashcards Audio Button */
.fc-audio-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--tag-bg, rgba(255, 255, 255, 0.1));
    border: 1px solid var(--border-color, rgba(255, 255, 255, 0.2));
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease;
    z-index: 10;
}

.fc-audio-btn:hover {
    transform: scale(1.15);
    background: var(--accent-color, #8B5CF6);
    color: #fff;
}

.fc-audio-btn:active {
    transform: scale(0.95);
}