/* style/khuyen-mai.css */
:root {
    --primary-color: #11A84E;
    --secondary-color: #22C768;
    --button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
    --card-bg: #11271B;
    --bg-color: #08160F;
    --text-main: #F2FFF6;
    --text-secondary: #A7D9B8;
    --border-color: #2E7A4E;
    --glow-color: #57E38D;
    --gold-color: #F2C14E;
    --divider-color: #1E3A2A;
    --deep-green-color: #0A4B2C;
}

.page-khuyen-mai {
    font-family: Arial, sans-serif;
    color: var(--text-main);
    background-color: var(--bg-color);
}

.page-khuyen-mai__hero-section {
    padding-top: 10px; /* Small top padding, body handles header offset */
    padding-bottom: 60px;
    background-color: var(--deep-green-color);
    position: relative;
    overflow: hidden;
}

.page-khuyen-mai__hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 40px;
    padding: 60px 20px;
    position: relative;
    z-index: 1;
}

.page-khuyen-mai__hero-content {
    flex: 1 1 50%;
    min-width: 300px;
    color: var(--text-main);
}

.page-khuyen-mai__main-title {
    font-size: 3.2em;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--gold-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai__hero-description {
    font-size: 1.2em;
    line-height: 1.6;
    margin-bottom: 30px;
    color: var(--text-secondary);
}

.page-khuyen-mai__cta-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.page-khuyen-mai__btn-primary,
.page-khuyen-mai__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 30px;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

.page-khuyen-mai__btn-primary {
    background: var(--button-gradient);
    color: #ffffff;
    border: 2px solid transparent;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    opacity: 0.9;
}

.page-khuyen-mai__btn-secondary {
    background: transparent;
    color: var(--glow-color);
    border: 2px solid var(--glow-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__btn-secondary:hover {
    transform: translateY(-3px);
    background-color: rgba(var(--glow-color), 0.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai__hero-image {
    flex: 1 1 40%;
    min-width: 300px;
    text-align: center;
}

.page-khuyen-mai__hero-side-image {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-khuyen-mai__content-area {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
}

.page-khuyen-mai__content-area--center {
    text-align: center;
}

.page-khuyen-mai__section-title {
    font-size: 2.5em;
    font-weight: 700;
    color: var(--gold-color);
    text-align: center;
    margin-bottom: 20px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.2);
}

.page-khuyen-mai__section-description {
    font-size: 1.1em;
    line-height: 1.6;
    color: var(--text-secondary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 50px;
}

.page-khuyen-mai__intro-section {
    padding: 60px 0;
    background-color: var(--bg-color);
}

.page-khuyen-mai__feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-khuyen-mai__feature-item {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-khuyen-mai__feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai__icon-box-media {
    width: 200px;
    height: 200px;
    aspect-ratio: 1 / 1;
    margin: 0 auto 25px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--glow-color);
    box-shadow: 0 0 15px var(--glow-color), inset 0 0 10px var(--glow-color);
}

.page-khuyen-mai__icon-box-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
    display: block;
}

.page-khuyen-mai__feature-title {
    font-size: 1.6em;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.page-khuyen-mai__feature-text {
    font-size: 1em;
    line-height: 1.6;
    color: var(--text-secondary);
}

.page-khuyen-mai__promo-section {
    padding: 60px 0;
    background-color: var(--deep-green-color);
}

.page-khuyen-mai__promo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-khuyen-mai__promo-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-khuyen-mai__promo-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai__promo-image {
    width: 100%;
    height: 250px; /* Fixed height for consistency */
    object-fit: cover;
    display: block;
}

.page-khuyen-mai__promo-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.page-khuyen-mai__promo-title {
    font-size: 1.4em;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.4;
}

.page-khuyen-mai__promo-title a {
    color: var(--gold-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

.page-khuyen-mai__promo-title a:hover {
    color: var(--glow-color);
}

.page-khuyen-mai__promo-text {
    font-size: 0.95em;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-bottom: 15px;
    flex-grow: 1;
}

.page-khuyen-mai__promo-date {
    font-size: 0.85em;
    color: var(--text-secondary);
    margin-bottom: 20px;
    display: block;
}

.page-khuyen-mai__btn-small {
    padding: 10px 20px;
    font-size: 0.9em;
    align-self: flex-start;
}

.page-khuyen-mai__guide-section {
    padding: 60px 0;
    background-color: var(--bg-color);
}

.page-khuyen-mai__guide-list {
    list-style: none;
    padding: 0;
    margin-top: 40px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.page-khuyen-mai__guide-item {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.page-khuyen-mai__guide-item p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
}

.page-khuyen-mai__guide-step-title {
    font-size: 1.5em;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.page-khuyen-mai__btn-link {
    color: var(--glow-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
    display: inline-block;
    margin-top: auto;
}

.page-khuyen-mai__btn-link:hover {
    text-decoration: underline;
    color: var(--gold-color);
}

.page-khuyen-mai__faq-section {
    padding: 60px 0;
    background-color: var(--deep-green-color);
}

.page-khuyen-mai__faq-list {
    max-width: 900px;
    margin: 40px auto 0;
}

.page-khuyen-mai__faq-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
}

.page-khuyen-mai__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    cursor: pointer;
    font-size: 1.15em;
    font-weight: 600;
    color: var(--text-main);
    background-color: rgba(0, 0, 0, 0.2);
    list-style: none; /* For details/summary */
}

.page-khuyen-mai__faq-question::-webkit-details-marker {
    display: none;
}

.page-khuyen-mai__faq-qtext {
    flex-grow: 1;
}

.page-khuyen-mai__faq-toggle {
    font-size: 1.5em;
    font-weight: 700;
    color: var(--glow-color);
    margin-left: 20px;
    transition: transform 0.3s ease;
}

.page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-toggle {
    transform: rotate(45deg);
}

.page-khuyen-mai__faq-answer {
    padding: 15px 25px 25px;
    font-size: 1em;
    line-height: 1.6;
    color: var(--text-secondary);
    border-top: 1px solid var(--divider-color);
}

.page-khuyen-mai__cta-bottom-section {
    padding: 80px 0;
    background-color: var(--bg-color);
    text-align: center;
}

.page-khuyen-mai__btn-large {
    padding: 16px 40px;
    font-size: 1.2em;
    margin-top: 30px;
}

/* General image responsive styles */
.page-khuyen-mai img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* All content containers for mobile overflow */
.page-khuyen-mai__hero-container,
.page-khuyen-mai__content-area,
.page-khuyen-mai__feature-grid,
.page-khuyen-mai__promo-grid,
.page-khuyen-mai__guide-list,
.page-khuyen-mai__faq-list {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

/* Media Queries for Mobile */
@media (max-width: 768px) {
    .page-khuyen-mai {
        font-size: 15px;
        line-height: 1.6;
    }

    /* HERO Section */
    .page-khuyen-mai__hero-section {
        padding-top: 10px !important; /* Ensure small top padding */
        padding-bottom: 40px;
    }

    .page-khuyen-mai__hero-container {
        flex-direction: column;
        padding: 30px 15px;
        gap: 30px;
    }

    .page-khuyen-mai__hero-content,
    .page-khuyen-mai__hero-image {
        flex: 1 1 100%;
        min-width: unset;
    }

    .page-khuyen-mai__main-title {
        font-size: 2.2em;
        margin-bottom: 15px;
    }

    .page-khuyen-mai__hero-description {
        font-size: 1em;
        margin-bottom: 25px;
    }

    .page-khuyen-mai__cta-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .page-khuyen-mai__btn-primary,
    .page-khuyen-mai__btn-secondary,
    .page-khuyen-mai a[class*="button"],
    .page-khuyen-mai a[class*="btn"] {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        padding-left: 15px;
        padding-right: 15px;
    }

    /* Intro Section - Feature Grid */
    .page-khuyen-mai__intro-section {
        padding: 40px 0;
    }

    .page-khuyen-mai__section-title {
        font-size: 1.8em;
        margin-bottom: 15px;
    }

    .page-khuyen-mai__section-description {
        font-size: 0.95em;
        margin-bottom: 30px;
    }

    .page-khuyen-mai__feature-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .page-khuyen-mai__feature-item {
        padding: 25px;
    }

    .page-khuyen-mai__icon-box-media {
        width: 150px;
        height: 150px;
        margin-bottom: 20px;
    }

    .page-khuyen-mai__feature-title {
        font-size: 1.4em;
    }

    /* Promo Section - Promo Grid */
    .page-khuyen-mai__promo-section {
        padding: 40px 0;
    }

    .page-khuyen-mai__promo-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .page-khuyen-mai__promo-card {
        flex-direction: column;
    }

    .page-khuyen-mai__promo-image {
        height: 200px; /* Adjust height for mobile */
    }

    .page-khuyen-mai__promo-content {
        padding: 20px;
    }

    .page-khuyen-mai__promo-title {
        font-size: 1.2em;
    }

    .page-khuyen-mai__promo-text {
        font-size: 0.9em;
    }

    .page-khuyen-mai__btn-small {
        align-self: stretch;
    }

    /* Guide Section */
    .page-khuyen-mai__guide-section {
        padding: 40px 0;
    }

    .page-khuyen-mai__guide-list {
        grid-template-columns: 1fr;
        gap: 25px;
    }

    .page-khuyen-mai__guide-item {
        padding: 25px;
    }

    .page-khuyen-mai__guide-step-title {
        font-size: 1.3em;
    }

    /* FAQ Section */
    .page-khuyen-mai__faq-section {
        padding: 40px 0;
    }

    .page-khuyen-mai__faq-list {
        margin-top: 30px;
    }

    .page-khuyen-mai__faq-question {
        padding: 15px 20px;
        font-size: 1em;
    }

    .page-khuyen-mai__faq-toggle {
        font-size: 1.2em;
    }

    .page-khuyen-mai__faq-answer {
        padding: 10px 20px 20px;
        font-size: 0.95em;
    }

    /* CTA Bottom Section */
    .page-khuyen-mai__cta-bottom-section {
        padding: 60px 0;
    }

    .page-khuyen-mai__btn-large {
        width: 100% !important;
        max-width: 100% !important;
        padding: 14px 25px;
        font-size: 1.1em;
        margin-top: 20px;
    }

    /* General image responsive styles for mobile */
    .page-khuyen-mai img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }

    .page-khuyen-mai__section,
    .page-khuyen-mai__card,
    .page-khuyen-mai__container,
    .page-khuyen-mai__hero-container,
    .page-khuyen-mai__content-area,
    .page-khuyen-mai__cta-buttons,
    .page-khuyen-mai__button-group,
    .page-khuyen-mai__btn-container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }
    .page-khuyen-mai__cta-buttons {
        flex-direction: column !important;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .page-khuyen-mai__main-title {
        font-size: 1.8em;
    }
    .page-khuyen-mai__section-title {
        font-size: 1.5em;
    }
    .page-khuyen-mai__hero-description {
        font-size: 0.9em;
    }
}