@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700;900&family=Oswald:wght@500;700&display=swap');

body {
    margin: 0;
    padding: 0;
    background-color: #0d0d0d;
    color: #ffffff;
    font-family: 'Noto Sans JP', sans-serif;
}

a:hover {
    color: var(--primary-color);
}


.yi-hero-wrapper {
    background-color: #0d0d0d;
    color: #ffffff;
    font-family: 'Noto Sans JP', sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    width: 100%;
}



/* Main Content (Hero) */
.yi-main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 150px 20px 80px;
    /* Thêm padding-top để không bị header đè lên */
    position: relative;
    z-index: 2;
    min-height: 100vh;
    box-sizing: border-box;
    width: 100%;
    max-width: 900px;
    margin: 0 auto;
}

.yi-subtitle {
    color: var(--primary-color);
    font-family: 'Oswald', sans-serif;
    font-size: 0.85rem;
    letter-spacing: 0.25em;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.yi-title {
    font-family: 'Oswald', sans-serif;
    font-size: clamp(3rem, 8vw, 6.5rem);
    font-weight: 700;
    line-height: 1.05;
    margin: 0 0 25px 0;
    letter-spacing: 0.04em;
    color: #ffffff;
}

.yi-title span {
    color: var(--primary-color);
}

.yi-desc {
    font-size: clamp(1rem, 2.5vw, 1.3rem);
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 10px;
    font-weight: 500;
}

.yi-target {
    font-size: 14px;
    color: #999999;
    margin: 0 0 40px 0;
}

.yi-buttons {
    display: flex;
    gap: 20px;
}

.yi-btn {
    padding: 16px 40px;
    border-radius: 4px;
    font-size: 15px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: 1px solid transparent;
}

.yi-btn-primary {
    background-color: var(--primary-color);
    color: #ffffff;
}

.yi-btn-primary:hover {
    background-color: #e04e0f;
    color: #ffffff;
}

.yi-btn-outline {
    background-color: transparent;
    border: 1px solid #555555;
    color: #ffffff;
}

.yi-btn-outline:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: #ffffff;
    color: #ffffff;
}

/* Scroll Indicator */
.yi-scroll-indicator {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 2;
}

.yi-scroll-text {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 11px;
    letter-spacing: 2px;
    color: #888888;
    margin-bottom: 15px;
}

.yi-scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, #888888, transparent);
    animation: scrollLine 1.8s ease-in-out infinite;
}

@keyframes scrollLine {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

/* News Section */
.yi-news-section {
    padding: 100px 20px;
    background-color: #111318;
    display: flex;
    justify-content: center;
}

.yi-news-container {
    width: 100%;
    max-width: 900px;
}

.yi-news-header {
    margin-bottom: 50px;
}

.yi-news-subtitle {
    color: var(--primary-color);
    font-family: 'Oswald', sans-serif;
    font-size: 14px;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 10px;
}

.yi-news-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 15px 0;
}

.yi-news-line {
    width: 40px;
    height: 3px;
    background-color: var(--primary-color);
}

.yi-news-list {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.yi-news-item {
    display: flex;
    align-items: center;
    padding: 25px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    text-decoration: none;
    transition: background-color 0.3s ease;
}

.yi-news-item:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

.yi-news-meta {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 40px;
    margin-right: 40px;
    transition: transform 0.3s ease;
}

.yi-news-date {
    color: #cccccc;
    font-size: 14px;
    font-family: 'Noto Sans JP', sans-serif;
    min-width: 80px;
}

.yi-news-category {
    font-size: 10px;
    padding: 4px 12px;
    border-radius: 3px;
    font-weight: 700;
    white-space: nowrap;
    text-transform: uppercase;
}

.home-news-badge {
    background-color: rgba(255, 107, 26, 0.1) !important;
    color: var(--primary-color) !important;
    border: none !important;
    font-size: 12px !important;
    padding: 6px 16px !important;
    border-radius: 4px !important;
    font-weight: 500 !important;
    min-width: 80px;
    text-align: center;
    text-transform: none;
}

.cat-program {
    background-color: rgba(33, 150, 243, 0.1);
    color: #2196F3;
    border: 1px solid rgba(33, 150, 243, 0.3);
}

.cat-event {
    background-color: rgba(76, 175, 80, 0.1);
    color: #4CAF50;
    border: 1px solid rgba(76, 175, 80, 0.3);
}

.cat-media {
    background-color: rgba(158, 158, 158, 0.1);
    color: #9E9E9E;
    border: 1px solid rgba(158, 158, 158, 0.3);
}

.cat-info {
    background-color: rgba(255, 107, 26, 0.1);
    color: #FF6B1A;
    border: 1px solid rgba(255, 107, 26, 0.3);
}

.yi-news-post-title {
    color: #ffffff;
    font-size: 15px;
    font-weight: 500;
    margin: 0;
    line-height: 1.5;
    flex: 1;
    transition: transform 0.3s ease, color 0.3s ease;
}

.yi-news-item:hover .yi-news-meta,
.yi-news-item:hover .yi-news-post-title {
    transform: translateX(10px);
}

.yi-news-item:hover .yi-news-post-title {
    color: var(--primary-color);
}

.yi-news-more {
    text-align: right;
    margin-top: 30px;
}

.yi-news-more a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 13px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.yi-news-more a:hover {
    color: #e04e0f;
}

@media (max-width: 768px) {
    .yi-news-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .yi-news-meta {
        min-width: auto;
    }

    .yi-news-post-title {
        font-size: 16px;
    }
}

/* Responsive cho Mobile */
@media (max-width: 992px) {
    .yi-title {
        font-size: 50px;
    }

    .yi-header-fixed {
        padding: 20px;
        flex-direction: column;
        gap: 15px;
        position: relative;
        /* Bỏ fixed trên mobile để tránh che nội dung quá nhiều */
        background: transparent;
        border-bottom: none;
    }

    .yi-nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }

    .yi-main-content {
        padding-top: 50px;
        min-height: auto;
    }

    .yi-scroll-indicator {
        position: relative;
        margin-top: 50px;
        transform: none;
        left: auto;
    }
}

@media (max-width: 576px) {
    .yi-title {
        font-size: 40px;
    }

    .yi-desc {
        font-size: 15px;
    }

    .yi-buttons {
        flex-direction: column;
        width: 100%;
        gap: 15px;
    }

    .yi-btn {
        width: 100%;
        box-sizing: border-box;
    }
}

/* Seasons Section */
.yi-seasons-section {
    padding: 100px 20px;
    background-color: #111318;
    display: flex;
    justify-content: center;
}

.yi-seasons-container {
    width: 100%;
    max-width: 1100px;
}

.yi-seasons-header {
    margin-bottom: 50px;
}

.yi-seasons-subtitle {
    color: var(--primary-color);
    font-family: 'Oswald', sans-serif;
    font-size: 14px;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 10px;
}

.yi-seasons-title {
    font-family: 'Oswald', sans-serif;
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #fff
}

.yi-seasons-desc {
    color: #aaaaaa;
    font-size: 15px;
    margin: 0;
}

.yi-seasons-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.yi-season-card {
    background-color: #1a1d24;
    border-radius: 8px;
    padding: 35px 30px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    flex-direction: column;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.yi-season-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.yi-season-card.status-next {
    border-color: rgba(255, 107, 26, 0.3);
}

.yi-season-card-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.yi-season-name {
    color: var(--primary-color);
    font-family: 'Oswald', sans-serif;
    font-size: 13px;
    letter-spacing: 1px;
    font-weight: 500;
}

.yi-season-badge {
    font-family: 'Oswald', sans-serif;
    font-size: 11px;
    letter-spacing: 1px;
    padding: 3px 10px;
    border-radius: 3px;
    font-weight: 500;
}

.badge-finished {
    background-color: #333333;
    color: #aaaaaa;
}

.badge-now-on {
    background: rgba(255, 107, 26, 0.15);
    color: var(--primary-color);
    font-family: 'Oswald', sans-serif;
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    padding: 3px 10px;
    border-radius: 2px;
}

.badge-next {
    background-color: var(--primary-color);
    color: #ffffff;
}

.yi-season-date {
    font-size: 38px;
    font-family: 'Oswald', sans-serif;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 5px 0;
}

.yi-season-date span {
    color: var(--primary-color);
}

.yi-season-event {
    font-size: 16px;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 15px 0;
}

.yi-season-excerpt {
    color: #cccccc;
    font-size: 13px;
    line-height: 1.6;
    flex-grow: 1;
    margin-bottom: 25px;
}

.yi-season-excerpt p {
    margin: 0;
}

.yi-season-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 13px;
    font-weight: 700;
    transition: color 0.3s ease;
    display: inline-block;
}

.yi-season-link:hover {
    color: #e04e0f;
}

@media (max-width: 992px) {
    .yi-seasons-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .yi-seasons-list {
        grid-template-columns: 1fr;
    }
}

/* Video Section */
.yi-video-section {
    width: 100%;
    background-color: #0d0d0d;
    padding: 80px 0 100px 0;
}

.yi-video-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.yi-intro-video {
    width: 100%;
    border-radius: 8px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
    outline: none;
    background-color: #000;
}

/* About Section */
.yi-about-section {
    padding: 100px 20px;
    background-color: #0d0d0d;
    display: flex;
    justify-content: center;
}

.yi-about-header {
    margin-bottom: 50px;
}

.yi-about-subtitle {
    color: var(--primary-color);
    font-family: 'Oswald', sans-serif;
    font-size: 14px;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 10px;
}

.yi-about-title {
    font-family: 'Oswald', sans-serif;
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #fff
}

.yi-about-line {
    width: 40px;
    height: 3px;
    background-color: var(--primary-color);
}

.yi-about-content {
    display: flex;
    gap: 50px;
    align-items: stretch;
}

.yi-about-left {
    flex: 1;
    display: flex;
    flex-direction: column;
}



.yi-about-quote p {
    font-family: 'Oswald', sans-serif;
    font-size: clamp(1.2rem, 2.2vw, 1.6rem);
    font-weight: 600;
    color: #fff;
    border-left: 3px solid var(--primary-color);
    padding-left: 20px;
    margin-bottom: 24px;
    line-height: 1.55;
}

.yi-about-text {
    color: #cccccc;
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.yi-about-text:last-of-type {
    margin-bottom: 30px;
}

.yi-about-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    transition: color 0.3s ease;
}

.yi-about-link:hover {
    color: #e04e0f;
}

.yi-about-right {
    flex: 1;
}

.yi-about-image-placeholder {
    width: 100%;
    height: 100%;
    min-height: 350px;
    background-color: #1a1a1c;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: #888888;
    font-size: 14px;
    border: 1px dashed rgba(255, 255, 255, 0.1);
}

@media (max-width: 992px) {
    .yi-about-content {
        flex-direction: column;
    }

    .yi-about-image-placeholder {
        min-height: 300px;
    }
}

/* Common Container Max-Width for Alignment */
.yi-video-container,
.yi-news-container,
.yi-seasons-container,
.yi-about-container {
    width: 100% !important;
    max-width: 1100px !important;
    margin: 0 auto !important;
}

/* Dream Partners Section */
.yi-partners-section {
    padding: 100px 20px;
    background-color: #0d0d0d;
}

.yi-partners-container {
    width: 100% !important;
    max-width: 1100px !important;
    margin: 0 auto !important;
}

.yi-partners-header-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 50px;
}

.yi-partners-header-left {
    flex: 1;
}

.yi-partners-subtitle {
    color: var(--primary-color);
    font-family: 'Oswald', sans-serif;
    font-size: 14px;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 10px;
}

.yi-partners-title {
    font-family: 'Oswald', sans-serif;
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #fff;
}

.yi-partners-header-right {
    padding-bottom: 10px;
}

.yi-partners-link {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;
    transition: color 0.3s ease;
}

.yi-partners-link:hover {
    color: #e04e0f;
}

.yi-partners-logos {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.yi-partner-logo-box {
    background-color: #1a1a1c;
    border-radius: 6px;
    height: 80px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #888888;
    font-size: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

@media (max-width: 992px) {
    .yi-partners-logos {
        grid-template-columns: repeat(3, 1fr);
    }
}

.yi-mentors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.yi-mentor-card {
    background-color: #1a1d24;
    border-radius: 8px;
    overflow: hidden;
    text-align: center;
    padding-bottom: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.yi-mentor-img {
    width: 100%;
    aspect-ratio: 1;
    overflow: hidden;
    margin-bottom: 15px;
}

.yi-mentor-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.yi-mentor-img-placeholder {
    width: 100%;
    aspect-ratio: 1;
    background-color: #222;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #555;
    margin-bottom: 15px;
}

.yi-mentor-name {
    font-size: 16px;
    font-weight: 700;
    margin: 0 0 5px 0;
    color: #fff;
}

.yi-mentor-title {
    font-size: 11px;
    color: #aaaaaa;
    margin: 0;
}

@media (max-width: 992px) {
    .yi-mentors-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .yi-partners-header-wrapper {
        flex-direction: column;
        align-items: flex-start;
        gap: 20px;
    }

    .yi-partners-logos {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Become Partner Section */
.yi-become-partner-section {
    padding: 120px 20px;
    background: radial-gradient(circle at top, rgba(255, 92, 22, 0.05) 0%, #0d0d0d 60%);
    background-color: #0d0d0d;
    display: flex;
    justify-content: center;
    text-align: center;
}

.yi-become-partner-container {
    width: 100% !important;
    max-width: 760px !important;
    margin: 0 auto !important;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.yi-become-partner-subtitle {
    color: var(--primary-color);
    font-family: 'Oswald', sans-serif;
    font-size: 14px;
    letter-spacing: 2px;
    display: block;
    margin-bottom: 20px;
}

.yi-become-partner-title {
    font-size: 42px;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 40px 0;
    line-height: 1.4;
}

.yi-become-partner-line {
    width: 40px;
    height: 3px;
    background-color: var(--primary-color);
}

.yi-become-partner-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-top: 60px;
    margin-bottom: 50px;
    width: 100%;
}

.yi-partner-benefit-card {
    background: rgba(255, 107, 26, 0.07);
    border: 1px solid rgba(255, 92, 22, 0.15);
    border-radius: 8px;
    padding: 40px 30px;
    text-align: left;
    display: flex;
    flex-direction: column;
}

.yi-benefit-icon {
    font-size: 24px;
    margin-bottom: 20px;
}

.yi-benefit-title {
    font-size: 16px;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 15px 0;
}

.yi-benefit-desc {
    color: #aaaaaa;
    font-size: 13px;
    line-height: 1.6;
    margin: 0;
}

.yi-become-partner-btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: #ffffff;
    text-decoration: none;
    font-size: 16px;
    font-weight: 700;
    padding: 20px 40px;
    border-radius: 4px;
    width: 100%;
    max-width: 600px;
    transition: background-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.yi-become-partner-btn:hover {
    background-color: #ff7a3e;
    color: #ffffff;
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(255, 92, 22, 0.3);
}

@media (max-width: 768px) {
    .yi-become-partner-cards {
        grid-template-columns: 1fr;
    }
}