/* Biến màu sắc */
:root {
    --primary-color: #113B7A;
    --secondary-color: #1D5FD1;
    --card-bg-color: #10233F;
    --text-main-color: #F3F8FF;
    --text-secondary-color: #AFC4E8;
    --border-color: #244D84;
    --glow-color: #4FA8FF;
    --gold-color: #F2C14E;
    --divider-color: #1B3357;
    --deep-navy-color: #08162B;
    --button-gradient: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
}

.page-download {
    font-family: 'Arial', sans-serif;
    color: var(--text-main-color); /* Body background is dark, so text should be light */
    background-color: var(--deep-navy-color);
}

.page-download__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.page-download__hero-section {
    position: relative;
    padding-top: 10px; /* Rely on body padding-top from shared.css */
    background-color: var(--deep-navy-color);
    color: var(--text-main-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.page-download__hero-image {
    width: 100%;
    max-height: 600px;
    overflow: hidden;
    margin-bottom: 30px;
}

.page-download__hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.page-download__hero-content {
    padding: 0 20px 50px;
    max-width: 900px;
    z-index: 1;
}

.page-download__main-title {
    font-size: clamp(2.2rem, 4vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--text-main-color);
}

.page-download__hero-description {
    font-size: 1.15rem;
    line-height: 1.6;
    margin-bottom: 30px;
    color: var(--text-secondary-color);
}

.page-download__cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.page-download__btn-primary,
.page-download__btn-secondary {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    box-sizing: border-box;
    max-width: 100%;
    white-space: normal;
    word-wrap: break-word;
}

.page-download__btn-primary {
    background: var(--button-gradient);
    color: var(--text-main-color);
    border: none;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-download__btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
}

.page-download__btn-secondary {
    background: transparent;
    color: var(--secondary-color);
    border: 2px solid var(--secondary-color);
}

.page-download__btn-secondary:hover {
    background: var(--secondary-color);
    color: var(--text-main-color);
    transform: translateY(-3px);
}

.page-download__section-title {
    font-size: clamp(1.8rem, 3.5vw, 2.8rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    color: var(--gold-color);
}

.page-download__section-description {
    font-size: 1rem;
    line-height: 1.6;
    text-align: center;
    max-width: 900px;
    margin: 0 auto 40px;
    color: var(--text-secondary-color);
}

.page-download__dark-section {
    background-color: var(--card-bg-color);
    padding: 60px 0;
    color: var(--text-main-color);
}

.page-download__benefits-section,
.page-download__how-to-download-section,
.page-download__features-section,
.page-download__compatibility-section,
.page-download__faq-section,
.page-download__cta-final-section {
    padding: 60px 0;
}

.page-download__benefits-grid,
.page-download__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-download__benefit-card,
.page-download__feature-card {
    background: var(--deep-navy-color);
    border-radius: 12px;
    overflow: hidden;
    text-align: center;
    padding: 30px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--border-color);
}

.page-download__benefit-card:hover,
.page-download__feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.35);
}

.page-download__benefit-card img,
.page-download__feature-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
    display: block;
}

.page-download__card-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--gold-color);
}

.page-download__benefit-card p,
.page-download__feature-card p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-secondary-color);
}

.page-download__how-to-download-section {
    background-color: var(--deep-navy-color);
    color: var(--text-main-color);
}

.page-download__download-steps {
    display: flex;
    gap: 40px;
    justify-content: center;
    margin-top: 40px;
    flex-wrap: wrap;
}

.page-download__platform-guide {
    background: var(--card-bg-color);
    border-radius: 12px;
    padding: 40px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    flex: 1;
    min-width: 300px;
    max-width: 500px;
    border: 1px solid var(--border-color);
}

.page-download__platform-title {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 25px;
    text-align: center;
    color: var(--gold-color);
}

.page-download__qr-code {
    width: 200px;
    height: 200px;
    display: block;
    margin: 0 auto 30px;
    border: 5px solid var(--text-main-color);
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(79, 168, 255, 0.5);
}

.page-download__step-list {
    list-style-type: decimal;
    padding-left: 20px;
    margin-bottom: 30px;
    color: var(--text-secondary-color);
}

.page-download__step-list li {
    margin-bottom: 10px;
    line-height: 1.6;
    font-size: 0.95rem;
}

.page-download__step-list li strong {
    color: var(--text-main-color);
}

.page-download__btn-block {
    display: block;
    width: 100%;
    text-align: center;
    margin-top: 20px;
}

.page-download__compatibility-section {
    background-color: var(--deep-navy-color);
    color: var(--text-main-color);
}

.page-download__compatibility-list {
    list-style-type: none;
    padding: 0;
    margin-top: 40px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.page-download__compatibility-list li {
    background: var(--card-bg-color);
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary-color);
    border: 1px solid var(--border-color);
}

.page-download__compatibility-list li strong {
    color: var(--gold-color);
    font-size: 1.1rem;
    display: block;
    margin-bottom: 10px;
}

.page-download__faq-section {
    background-color: var(--card-bg-color);
    color: var(--text-main-color);
}

.page-download__faq-list {
    margin-top: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

details.page-download__faq-item {
  margin-bottom: 15px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  background: var(--deep-navy-color);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}
details.page-download__faq-item summary.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
}
details.page-download__faq-item summary.page-download__faq-question::-webkit-details-marker {
  display: none;
}
details.page-download__faq-item summary.page-download__faq-question:hover {
  background: rgba(29, 95, 209, 0.1);
}
.page-download__faq-qtext {
  flex: 1;
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--text-main-color);
}
.page-download__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  color: var(--gold-color);
  flex-shrink: 0;
  margin-left: 15px;
  width: 30px;
  text-align: center;
  line-height: 1;
}
details.page-download__faq-item .page-download__faq-answer {
  padding: 0 25px 25px;
  background: var(--card-bg-color);
  border-radius: 0 0 12px 12px;
  color: var(--text-secondary-color);
  font-size: 0.95rem;
  line-height: 1.7;
}

.page-download__cta-final-section {
    background-color: var(--deep-navy-color);
    color: var(--text-main-color);
    text-align: center;
}

.page-download__cta-final-section .page-download__cta-buttons {
    margin-top: 40px;
}

/* Common image styles for content areas */
.page-download img {
    max-width: 100%;
    height: auto;
    display: block; /* Prevents extra space below images */
}

/* --- Responsive Styles --- */

/* Tablet and smaller desktops */
@media (max-width: 1024px) {
    .page-download__container {
        padding: 15px;
    }

    .page-download__hero-content {
        padding: 0 15px 40px;
    }

    .page-download__main-title {
        font-size: clamp(2rem, 5vw, 3rem);
    }

    .page-download__hero-description {
        font-size: 1rem;
    }

    .page-download__benefits-section,
    .page-download__how-to-download-section,
    .page-download__features-section,
    .page-download__compatibility-section,
    .page-download__faq-section,
    .page-download__cta-final-section {
        padding: 40px 0;
    }

    .page-download__section-title {
        font-size: clamp(1.6rem, 4vw, 2.5rem);
    }

    .page-download__section-description {
        margin-bottom: 30px;
    }

    .page-download__benefit-card,
    .page-download__feature-card {
        padding: 25px;
    }

    .page-download__benefit-card img,
    .page-download__feature-card img {
        height: 200px;
    }

    .page-download__card-title {
        font-size: 1.25rem;
    }

    .page-download__platform-guide {
        padding: 30px;
    }

    .page-download__platform-title {
        font-size: 1.6rem;
    }

    .page-download__qr-code {
        width: 180px;
        height: 180px;
    }

    .page-download__faq-qtext {
        font-size: 1rem;
    }

    .page-download__faq-toggle {
        font-size: 24px;
        width: 25px;
    }
    details.page-download__faq-item summary.page-download__faq-question {
        padding: 15px 20px;
    }
    details.page-download__faq-item .page-download__faq-answer {
        padding: 0 20px 20px;
    }
}

/* Mobile devices */
@media (max-width: 768px) {
    .page-download__container {
        padding-left: 15px !important;
        padding-right: 15px !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    .page-download__hero-section {
        padding-top: 10px;
    }

    .page-download__hero-image img {
        object-fit: contain !important; /* Prevents cropping on mobile */
        aspect-ratio: unset !important;
        width: 100% !important;
        height: auto !important;
    }

    .page-download__hero-content {
        padding-left: 15px;
        padding-right: 15px;
        padding-bottom: 30px;
    }

    .page-download__main-title {
        font-size: clamp(1.8rem, 7vw, 2.5rem);
        margin-bottom: 15px;
    }

    .page-download__hero-description {
        font-size: 0.95rem;
        margin-bottom: 25px;
    }

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

    .page-download__btn-primary,
    .page-download__btn-secondary {
        padding: 12px 20px;
        font-size: 1rem;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        margin: 0 auto; /* Center buttons */
    }

    .page-download__section-title {
        font-size: clamp(1.5rem, 6vw, 2rem);
        margin-bottom: 15px;
    }

    .page-download__section-description {
        font-size: 0.9rem;
        margin-bottom: 25px;
    }

    .page-download__benefits-grid,
    .page-download__features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        margin-top: 20px;
    }

    .page-download__benefit-card,
    .page-download__feature-card {
        padding: 20px;
    }

    .page-download__benefit-card img,
    .page-download__feature-card img {
        
        margin-bottom: 15px;
    }

    .page-download__card-title {
        font-size: 1.15rem;
        margin-bottom: 10px;
    }

    .page-download__benefit-card p,
    .page-download__feature-card p {
        font-size: 0.85rem;
    }

    .page-download__download-steps {
        flex-direction: column;
        gap: 30px;
        margin-top: 30px;
    }

    .page-download__platform-guide {
        padding: 25px;
        max-width: 100%;
    }

    .page-download__platform-title {
        font-size: 1.4rem;
        margin-bottom: 20px;
    }

    .page-download__qr-code {
        width: 150px;
        height: 150px;
        margin-bottom: 25px;
    }

    .page-download__step-list {
        font-size: 0.85rem;
        padding-left: 18px;
        margin-bottom: 25px;
    }

    .page-download__btn-block {
        margin-top: 15px;
    }

    .page-download__compatibility-list {
        grid-template-columns: 1fr;
        gap: 15px;
        margin-top: 30px;
    }

    .page-download__compatibility-list li {
        padding: 20px;
        font-size: 0.9rem;
    }

    .page-download__compatibility-list li strong {
        font-size: 1rem;
        margin-bottom: 8px;
    }

    .page-download__faq-qtext {
        font-size: 0.95rem;
    }

    .page-download__faq-toggle {
        font-size: 22px;
        width: 22px;
        margin-left: 10px;
    }
    details.page-download__faq-item summary.page-download__faq-question {
        padding: 12px 15px;
    }
    details.page-download__faq-item .page-download__faq-answer {
        padding: 0 15px 15px;
        font-size: 0.85rem;
    }

    /* Ensure all images and containers prevent horizontal scroll */
    .page-download img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }
    .page-download__hero-section,
    .page-download__benefits-section,
    .page-download__how-to-download-section,
    .page-download__features-section,
    .page-download__compatibility-section,
    .page-download__faq-section,
    .page-download__cta-final-section {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 0 !important;
        padding-right: 0 !important;
    }
    .page-download__download-steps,
    .page-download__benefits-grid,
    .page-download__features-grid,
    .page-download__compatibility-list,
    .page-download__faq-list {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }
}

/* Ensure content section padding is consistent */
.page-download__benefits-section .page-download__container,
.page-download__how-to-download-section .page-download__container,
.page-download__features-section .page-download__container,
.page-download__compatibility-section .page-download__container,
.page-download__faq-section .page-download__container,
.page-download__cta-final-section .page-download__container {
    padding-left: 20px;
    padding-right: 20px;
}

@media (max-width: 768px) {
    .page-download__benefits-section .page-download__container,
    .page-download__how-to-download-section .page-download__container,
    .page-download__features-section .page-download__container,
    .page-download__compatibility-section .page-download__container,
    .page-download__faq-section .page-download__container,
    .page-download__cta-final-section .page-download__container {
        padding-left: 15px;
        padding-right: 15px;
    }
}