.preview-section {
    position: relative;
    padding: 140px 24px;
    background: #EEF1F6;
    overflow: hidden;
}

.preview-container {
    position: relative;
    z-index: 10;
    max-width: 1300px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    align-items: center;
}

.preview-text h2 {
    font-family: 'DM Sans', sans-serif;
    font-size: clamp(32px, 4vw, 42px);
    font-weight: 800;
    color: var(--h-dark);
    margin-bottom: 24px;
    letter-spacing: -1.5px;
}

.preview-text p {
    color: var(--h-muted);
    font-size: 18px;
    line-height: 1.6;
    max-width: 480px;
}

.preview-visual {
    position: relative;
    height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
    perspective: 2000px;
}

.preview-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    box-shadow: 0 40px 80px -15px rgba(0, 0, 0, 0.12);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Main Video Card */
.preview-card.main {
    width: 460px;
    height: 300px;
    z-index: 2;
    overflow: hidden;
    transform: rotateY(-15deg) rotateX(5deg);
}

.v-header-mini {
    padding: 14px 20px;
    font-size: 12px;
    font-weight: 800;
    color: var(--h-dark);
    letter-spacing: 1px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.v-player-mini {
    background: #111;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.play-btn-mini {
    width: 64px;
    height: 64px;
    background: var(--h-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 30px rgba(93, 138, 254, 0.4);
}

.v-footer-mini {
    padding: 12px 20px;
    font-size: 11px;
    font-weight: 600;
    color: var(--h-muted);
    background: white;
}

/* NEW FLOATING CARD (TOP RIGHT) */
.preview-card.progress {
    width: 220px;
    height: 160px;
    top: -40px;
    right: -40px;
    z-index: 3;
    padding: 20px;
    text-align: center;
    transform: translateZ(80px) rotateY(-15deg) rotateX(5deg);
}

.progress-title {
    font-size: 11px;
    font-weight: 700;
    color: var(--h-muted);
    margin-bottom: 10px;
}

.progress-circle {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    border: 6px solid #EEF2FF;
    border-top-color: var(--h-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 10px;
    font-weight: 800;
    font-size: 16px;
}

.progress-label {
    font-size: 12px;
    color: var(--h-muted);
}

/* Side Notes Card */
.preview-card.side {
    width: 280px;
    height: 220px;
    bottom: -80px;
    left: -50px;
    z-index: 1;
    padding: 24px;
    transform: translateZ(-50px) rotateY(10deg) rotateY(-15deg) rotateX(5deg);
}

.note-title-mini {
    font-family: 'DM Sans', sans-serif;
    font-size: 18px;
    font-weight: 700;
    color: var(--h-dark);
    margin-bottom: 16px;
}

.preview-card ul {
    list-style: none;
    padding: 0;
}

.preview-card ul li {
    font-size: 14px;
    color: var(--h-muted);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
}

.preview-card ul li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--h-blue);
    border-radius: 50%;
    flex-shrink: 0;
}

/* Hover Interaction */
.preview-visual:hover .preview-card.main {
    transform: rotateY(-5deg) rotateX(2deg) scale(1.02);
}

.preview-visual:hover .preview-card.side {
    transform: translateZ(50px) rotateY(5deg);
}

.preview-visual:hover .preview-card.progress {
    transform: translateZ(120px) rotateY(-5deg) scale(1.05);
}

@media (max-width: 1024px) {
    .preview-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 60px;
    }

    .preview-text p {
        margin: 0 auto;
    }

    .preview-visual {
        height: 400px;
        transform: scale(0.8);
    }
}

@media (max-width: 600px) {
    .preview-section {
        padding: 80px 20px;
        scroll-margin-top: 80px;
    }

    .preview-visual {
        height: 320px;
        transform: scale(0.65) translateY(-50px);
    }

    /* Mobile fix for side card cutoff */
    .preview-card.side {
        right: -120px;
        left: -40%;
        top: 220px;
        bottom: 50px;
        transform: translateX(50%) translateY(-10px) translateZ(0) rotateY(-10deg) rotateX(10deg) scale(0.95);
        transition: transform 0.3s ease;
        z-index: -1;
        opacity: 0.8;
    }

    .preview-card.side:hover {
        z-index: 4;
        opacity: 1;
        transform: translateX(50%) translateY(0) translateZ(0) rotateY(-5deg) rotateX(5deg) scale(1);
    }

    .preview-card.main:hover {
        z-index: -1;
        opacity: 1;
        transform: translateX(50%) translateY(-20px) translateZ(0) rotateY(-5deg) rotateX(5deg) scale(1);
    }

    .preview-card.progress {
        right: -120px;
        top: -20px;
        transform: scale(0.8) translateZ(30px);
        z-index: -1;
    }

    .preview-card.progress:hover {
        z-index: 4;
        opacity: 1;
        transform: translateX(50%) translateY(-20px) translateZ(0) rotateY(-5deg) rotateX(5deg) scale(1);
    }
}