/* Banner Section Styles */
.banner-section {
    position: relative;
    width: 100%;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    overflow: hidden;
}

/* Banner Background */
.banner-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-content);
}

.banner-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg,
            rgba(17, 17, 17, 0.75) 0%,
            rgba(17, 17, 17, 0.5) 40%,
            rgba(17, 17, 17, 0.1) 70%,
            rgba(17, 17, 17, 0) 100%);
}

/* Banner Content */
.banner-content {
    position: relative;
    z-index: calc(var(--z-content) + 1);
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    padding-top: calc(var(--header-height) + 40px);
}

.banner-text {
    max-width: 700px;
}

/* Banner Title - "Q Academy" */
.banner-title {
    font-size: 72px;
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    line-height: 1.1;
    margin-bottom: 8px;
    animation: fadeInUp 0.8s ease-out;
    letter-spacing: -1px;
}

/* Banner Subtitle - "HỌC VIỆN ĐÀO TẠO SPA CAO CẤP" */
.banner-subtitle {
    font-size: 24px;
    font-weight: var(--font-weight-medium);
    color: var(--color-white);
    letter-spacing: 2px;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease-out 0.1s backwards;
}

.banner-description {
    font-size: 16px;
    font-weight: var(--font-weight-regular);
    color: var(--color-white);
    line-height: 1.7;
    margin-bottom: 32px;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

/* Course Tags */
.course-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease-out 0.3s backwards;
}

.course-tag {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    backdrop-filter: blur(4px);
    text-decoration: none;
    cursor: pointer;
    transition: background-color var(--transition-fast),
        border-color var(--transition-fast),
        transform var(--transition-fast);
}

.course-tag:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.tag-name {
    font-size: 14px;
    font-weight: var(--font-weight-medium);
    color: var(--color-white);
}

.tag-duration {
    font-size: 14px;
    font-weight: var(--font-weight-semibold);
    color: #dad49d;
}

/* CTA Button */
.banner-cta {
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

.btn-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 40px;
    background-color: #8B9A5B;
    color: var(--color-white);
    border: none;
    border-radius: var(--radius-full);
    font-size: 16px;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: transform var(--transition-fast),
        box-shadow var(--transition-fast),
        background-color var(--transition-fast);
}

.btn-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0px 8px 24px rgba(139, 154, 91, 0.4);
    background-color: #9AAA6B;
}

.btn-cta:active {
    transform: translateY(-1px);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Styles */
@media (max-width: 1200px) {
    .banner-content {
        padding: 0 60px;
        padding-top: calc(var(--header-height) + 40px);
    }

    .banner-title {
        font-size: 56px;
    }

    .banner-subtitle {
        font-size: 20px;
    }

    .banner-description {
        font-size: 15px;
    }
}

@media (max-width: 768px) {
    .banner-section {
        min-height: 100vh;
    }

    .banner-content {
        padding: 0 24px;
        padding-top: calc(var(--header-height) + 32px);
    }

    .banner-title {
        font-size: 40px;
        margin-bottom: 8px;
    }

    .banner-subtitle {
        font-size: 16px;
        letter-spacing: 1px;
        margin-bottom: 20px;
    }

    .banner-description {
        font-size: 14px;
        margin-bottom: 24px;
    }

    .banner-description br {
        display: none;
    }

    .course-tags {
        gap: 12px;
        margin-bottom: 24px;
    }

    .course-tag {
        padding: 10px 16px;
        gap: 8px;
    }

    .tag-name,
    .tag-duration {
        font-size: 13px;
    }

    .btn-cta {
        padding: 14px 32px;
        font-size: 14px;
        width: 100%;
        max-width: 280px;
    }

    .banner-overlay {
        background: linear-gradient(180deg,
                rgba(17, 17, 17, 0.6) 0%,
                rgba(17, 17, 17, 0.75) 100%);
    }
}

@media (max-width: 480px) {
    .banner-title {
        font-size: 32px;
    }

    .banner-subtitle {
        font-size: 14px;
    }

    .banner-description {
        font-size: 13px;
    }

    .course-tags {
        flex-direction: column;
        align-items: flex-start;
    }

    .course-tag {
        width: fit-content;
    }
}

/* Parallax effect on scroll (optional enhancement) */
@media (prefers-reduced-motion: no-preference) {
    .banner-image {
        transition: transform 0.1s ease-out;
    }
}