:root {
    --primary-color: #2F6BFF;
    --secondary-color: #6FA3FF;
    --button-gradient: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
    --card-bg-color: #FFFFFF;
    --background-color-page: #F4F7FB;
    --text-main-color: #1F2D3D;
    --text-custom-color-1776249996415: #000000;
    --border-color: #D6E2FF;
    --glow-color: #A5C4FF;
}

.page-su-kien-giai-dau {
    font-family: Arial, sans-serif;
    color: var(--text-main-color);
    background-color: var(--background-color-page);
}

.page-su-kien-giai-dau__hero-section {
    padding-top: 10px; /* Small top padding as body handles header offset */
    padding-bottom: 60px;
    background-color: var(--background-color-page);
}

.page-su-kien-giai-dau__hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    padding: 40px 20px;
}

.page-su-kien-giai-dau__hero-content {
    flex: 1 1 45%;
    min-width: 300px;
}

.page-su-kien-giai-dau__main-title {
    font-size: clamp(2em, 4vw, 3.2em);
    color: var(--text-custom-color-1776249996415);
    margin-bottom: 20px;
    line-height: 1.2;
    font-weight: bold;
}

.page-su-kien-giai-dau__hero-description {
    font-size: 1.1em;
    line-height: 1.6;
    margin-bottom: 30px;
    color: var(--text-main-color);
}

.page-su-kien-giai-dau__cta-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.page-su-kien-giai-dau__btn-primary,
.page-su-kien-giai-dau__btn-secondary {
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1em;
    text-align: center;
    transition: all 0.3s ease;
    box-sizing: border-box;
    max-width: 100%;
    white-space: normal;
    word-wrap: break-word;
}

.page-su-kien-giai-dau__btn-primary {
    background: var(--button-gradient);
    color: #ffffff;
    border: 2px solid transparent;
}

.page-su-kien-giai-dau__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.page-su-kien-giai-dau__btn-secondary {
    background: var(--card-bg-color);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.page-su-kien-giai-dau__btn-secondary:hover {
    background: var(--primary-color);
    color: #ffffff;
    transform: translateY(-2px);
}

.page-su-kien-giai-dau__hero-image {
    flex: 1 1 45%;
    min-width: 300px;
    text-align: center;
}

.page-su-kien-giai-dau__hero-side-image {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.page-su-kien-giai-dau__event-list-section,
.page-su-kien-giai-dau__join-guide-section,
.page-su-kien-giai-dau__faq-section {
    padding: 60px 0;
    background-color: var(--card-bg-color);
    margin-bottom: 20px;
}

.page-su-kien-giai-dau__event-list-section {
    background-color: var(--background-color-page);
}

.page-su-kien-giai-dau__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.page-su-kien-giai-dau__section-title {
    font-size: clamp(1.8em, 3.5vw, 2.5em);
    color: var(--text-custom-color-1776249996415);
    text-align: center;
    margin-bottom: 20px;
    font-weight: bold;
}

.page-su-kien-giai-dau__section-description {
    font-size: 1.05em;
    line-height: 1.6;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
    color: var(--text-main-color);
}

.page-su-kien-giai-dau__event-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.page-su-kien-giai-dau__event-card {
    background-color: var(--card-bg-color);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}

.page-su-kien-giai-dau__event-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.page-su-kien-giai-dau__event-card-media {
    width: 100%;
    height: 200px; /* Fixed height for consistent card image display */
    overflow: hidden;
}

.page-su-kien-giai-dau__event-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.page-su-kien-giai-dau__event-card-content {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.page-su-kien-giai-dau__event-card-title {
    font-size: 1.3em;
    margin-bottom: 10px;
    font-weight: bold;
    line-height: 1.4;
}

.page-su-kien-giai-dau__event-card-title a {
    color: var(--text-custom-color-1776249996415);
    text-decoration: none;
}

.page-su-kien-giai-dau__event-card-title a:hover {
    color: var(--primary-color);
}

.page-su-kien-giai-dau__event-card-date {
    font-size: 0.9em;
    color: #666;
    margin-bottom: 15px;
}

.page-su-kien-giai-dau__event-card-description {
    font-size: 1em;
    line-height: 1.5;
    color: var(--text-main-color);
    margin-bottom: 20px;
    flex-grow: 1;
}

.page-su-kien-giai-dau__btn-text-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    display: inline-block;
    margin-top: auto;
}

.page-su-kien-giai-dau__btn-text-link:hover {
    text-decoration: underline;
}

.page-su-kien-giai-dau__cta-center {
    text-align: center;
}

.page-su-kien-giai-dau__join-guide-section {
    background-color: var(--card-bg-color);
}

.page-su-kien-giai-dau__guide-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-su-kien-giai-dau__guide-step {
    text-align: center;
    padding: 30px;
    background-color: var(--background-color-page);
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.page-su-kien-giai-dau__guide-step:hover {
    transform: translateY(-5px);
}

.page-su-kien-giai-dau__guide-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--button-gradient);
    color: #ffffff;
    font-size: 1.5em;
    font-weight: bold;
    margin-bottom: 20px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.page-su-kien-giai-dau__guide-title {
    font-size: 1.3em;
    color: var(--text-custom-color-1776249996415);
    margin-bottom: 15px;
    font-weight: bold;
}

.page-su-kien-giai-dau__guide-description {
    font-size: 1em;
    line-height: 1.6;
    color: var(--text-main-color);
}

.page-su-kien-giai-dau__guide-description a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
}

.page-su-kien-giai-dau__guide-description a:hover {
    text-decoration: underline;
}

.page-su-kien-giai-dau__faq-section {
    background-color: var(--background-color-page);
}

.page-su-kien-giai-dau__faq-list {
    max-width: 900px;
    margin: 40px auto 0;
}

.page-su-kien-giai-dau__faq-item {
    background-color: var(--card-bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.page-su-kien-giai-dau__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 1.15em;
    font-weight: bold;
    color: var(--text-custom-color-1776249996415);
    cursor: pointer;
    background-color: var(--card-bg-color);
    border-bottom: 1px solid transparent; /* default */
    transition: background-color 0.3s ease;
    list-style: none; /* Hide default marker */
}

.page-su-kien-giai-dau__faq-question::-webkit-details-marker {
    display: none;
}

.page-su-kien-giai-dau__faq-item[open] > .page-su-kien-giai-dau__faq-question {
    background-color: var(--primary-color);
    color: #ffffff;
    border-bottom-color: var(--primary-color);
}

.page-su-kien-giai-dau__faq-item[open] > .page-su-kien-giai-dau__faq-question .page-su-kien-giai-dau__faq-toggle {
    color: #ffffff;
}

.page-su-kien-giai-dau__faq-question:hover {
    background-color: var(--secondary-color);
    color: #ffffff;
}

.page-su-kien-giai-dau__faq-toggle {
    font-size: 1.5em;
    line-height: 1;
    margin-left: 15px;
    color: var(--primary-color);
    transition: transform 0.3s ease, color 0.3s ease;
}

.page-su-kien-giai-dau__faq-item[open] .page-su-kien-giai-dau__faq-toggle {
    transform: rotate(0deg); /* Explicitly set for consistency */
}

.page-su-kien-giai-dau__faq-answer {
    padding: 0 25px 20px;
    font-size: 1em;
    line-height: 1.6;
    color: var(--text-main-color);
}

.page-su-kien-giai-dau__faq-answer p {
    margin-bottom: 0;
}

/* --- General Responsive Styles --- */
.page-su-kien-giai-dau img {
    max-width: 100%;
    height: auto;
    display: block;
}

.page-su-kien-giai-dau__container,
.page-su-kien-giai-dau__cta-buttons,
.page-su-kien-giai-dau__event-grid,
.page-su-kien-giai-dau__guide-steps,
.page-su-kien-giai-dau__faq-list {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

@media (max-width: 768px) {
    .page-su-kien-giai-dau__hero-section {
        padding-top: 10px !important;
        padding-bottom: 40px !important;
    }

    .page-su-kien-giai-dau__hero-container {
        flex-direction: column;
        padding: 20px 15px;
        gap: 20px;
    }

    .page-su-kien-giai-dau__hero-content,
    .page-su-kien-giai-dau__hero-image {
        flex: 1 1 100%;
        min-width: unset;
    }

    .page-su-kien-giai-dau__main-title {
        font-size: clamp(1.8em, 8vw, 2.5em);
        text-align: center;
    }

    .page-su-kien-giai-dau__hero-description {
        font-size: 1em;
        text-align: center;
    }

    .page-su-kien-giai-dau__cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 10px;
        padding: 0 15px;
    }

    .page-su-kien-giai-dau__btn-primary,
    .page-su-kien-giai-dau__btn-secondary {
        max-width: 100% !important;
        width: 100% !important;
        padding: 12px 20px !important;
        font-size: 0.95em !important;
    }

    .page-su-kien-giai-dau__hero-side-image {
        border-radius: 8px;
    }

    .page-su-kien-giai-dau__event-list-section,
    .page-su-kien-giai-dau__join-guide-section,
    .page-su-kien-giai-dau__faq-section {
        padding: 40px 0 !important;
    }

    .page-su-kien-giai-dau__container {
        padding: 0 15px !important;
    }

    .page-su-kien-giai-dau__section-title {
        font-size: clamp(1.5em, 7vw, 2em);
        margin-bottom: 15px;
    }

    .page-su-kien-giai-dau__section-description {
        font-size: 0.95em;
        margin-bottom: 30px;
    }

    .page-su-kien-giai-dau__event-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .page-su-kien-giai-dau__event-card-media {
        height: 180px;
    }

    .page-su-kien-giai-dau__event-card-title {
        font-size: 1.15em;
    }

    .page-su-kien-giai-dau__guide-steps {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .page-su-kien-giai-dau__guide-step {
        padding: 20px;
    }

    .page-su-kien-giai-dau__guide-number {
        width: 40px;
        height: 40px;
        font-size: 1.2em;
        margin-bottom: 15px;
    }

    .page-su-kien-giai-dau__guide-title {
        font-size: 1.15em;
    }

    .page-su-kien-giai-dau__faq-list {
        margin-top: 30px;
    }

    .page-su-kien-giai-dau__faq-question {
        padding: 15px 20px;
        font-size: 1em;
    }

    .page-su-kien-giai-dau__faq-toggle {
        font-size: 1.3em;
    }

    .page-su-kien-giai-dau__faq-answer {
        padding: 0 20px 15px;
        font-size: 0.95em;
    }

    /* General image and container rules for mobile */
    .page-su-kien-giai-dau img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    .page-su-kien-giai-dau__section,
    .page-su-kien-giai-dau__card,
    .page-su-kien-giai-dau__container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }
}