/* style/app-download.css */

/* Biến CSS */
:root {
    --page-app-download-primary-color: #003366;
    --page-app-download-secondary-color: #FFD700;
    --page-app-download-text-dark: #333333;
    --page-app-download-text-light: #ffffff;
    --page-app-download-background-light: #f8f8f8;
    --page-app-download-background-dark: #002244;
    --page-app-download-border-color: #e0e0e0;
}

.page-app-download {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--page-app-download-text-dark);
    background-color: var(--page-app-download-background-light);
}

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

.page-app-download__section-title {
    font-size: 2.5em;
    color: var(--page-app-download-primary-color);
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 15px;
}

.page-app-download__section-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--page-app-download-secondary-color);
    border-radius: 2px;
}

.page-app-download__section-description,
.page-app-download__guide-intro,
.page-app-download__promo-description,
.page-app-download__promo-cta,
.page-app-download__cta-description {
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.1em;
    color: #555555;
}

/* Hero Section */
.page-app-download__hero-section {
    background: linear-gradient(135deg, var(--page-app-download-primary-color) 0%, #004488 100%);
    color: var(--page-app-download-text-light);
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-app-download__hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(255, 215, 0, 0.1) 0%, transparent 70%);
    animation: page-app-download-hero-glow 15s infinite alternate;
}

@keyframes page-app-download-hero-glow {
    0% { transform: scale(0.8); opacity: 0.5; }
    100% { transform: scale(1.2); opacity: 1; }
}

.page-app-download__hero-section .page-app-download__container {
    position: relative;
    z-index: 1;
}

.page-app-download__hero-title {
    font-size: 3.5em;
    margin-bottom: 20px;
    font-weight: bold;
    line-height: 1.2;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.page-app-download__hero-description {
    font-size: 1.3em;
    max-width: 800px;
    margin: 0 auto 40px auto;
    opacity: 0.9;
}

.page-app-download__hero-buttons .page-app-download__btn {
    margin: 10px;
    font-size: 1.2em;
    padding: 15px 35px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.page-app-download__btn--primary {
    background-color: var(--page-app-download-secondary-color);
    color: var(--page-app-download-primary-color);
    border: 2px solid var(--page-app-download-secondary-color);
    font-weight: bold;
}

.page-app-download__btn--primary:hover {
    background-color: #e6c200;
    border-color: #e6c200;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.3);
}

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

.page-app-download__btn--secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--page-app-download-secondary-color);
    color: var(--page-app-download-secondary-color);
    transform: translateY(-3px);
}

/* Features Section */
.page-app-download__features-section {
    padding: 80px 0;
    background-color: var(--page-app-download-background-light);
}

.page-app-download__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.page-app-download__feature-item {
    background-color: var(--page-app-download-text-light);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-app-download__feature-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.page-app-download__feature-icon {
    width: 70px;
    height: 70px;
    margin-bottom: 20px;
    filter: drop-shadow(0 4px 8px rgba(0, 51, 102, 0.2));
}

.page-app-download__feature-title {
    font-size: 1.6em;
    color: var(--page-app-download-primary-color);
    margin-bottom: 15px;
}

.page-app-download__feature-item p {
    font-size: 1em;
    color: #666666;
}

/* Download Guide Section */
.page-app-download__download-guide-section {
    padding: 80px 0;
    background-color: var(--page-app-download-background-dark);
    color: var(--page-app-download-text-light);
}

.page-app-download__download-guide-section .page-app-download__section-title,
.page-app-download__download-guide-section .page-app-download__guide-intro {
    color: var(--page-app-download-text-light);
}

.page-app-download__download-guide-section .page-app-download__section-title::after {
    background-color: var(--page-app-download-secondary-color);
}

.page-app-download__platform-guide {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    justify-content: center;
}

.page-app-download__platform-item {
    background-color: #002d5a;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    flex: 1;
    min-width: 350px;
    max-width: 550px;
    text-align: center;
}

.page-app-download__platform-title {
    font-size: 2em;
    color: var(--page-app-download-secondary-color);
    margin-bottom: 25px;
}

.page-app-download__platform-image {
    max-width: 80%;
    height: auto;
    margin-bottom: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.page-app-download__guide-list {
    text-align: left;
    list-style: none;
    padding-left: 0;
    margin-bottom: 30px;
}

.page-app-download__guide-list li {
    margin-bottom: 15px;
    font-size: 1.1em;
    padding-left: 30px;
    position: relative;
}

.page-app-download__guide-list li::before {
    content: counter(list-item);
    counter-increment: list-item;
    position: absolute;
    left: 0;
    top: 0;
    background-color: var(--page-app-download-secondary-color);
    color: var(--page-app-download-primary-color);
    width: 25px;
    height: 25px;
    line-height: 25px;
    border-radius: 50%;
    text-align: center;
    font-weight: bold;
    font-size: 0.9em;
}

.page-app-download__btn--android,
.page-app-download__btn--ios {
    display: inline-block;
    padding: 15px 40px;
    font-size: 1.1em;
    font-weight: bold;
    border-radius: 8px;
    text-decoration: none;
    transition: background-color 0.3s ease, transform 0.3s ease;
    background-color: var(--page-app-download-secondary-color);
    color: var(--page-app-download-primary-color);
    border: 2px solid var(--page-app-download-secondary-color);
}

.page-app-download__btn--android:hover,
.page-app-download__btn--ios:hover {
    background-color: #e6c200;
    border-color: #e6c200;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.3);
}

/* Key Features Section */
.page-app-download__key-features-section {
    padding: 80px 0;
    background-color: var(--page-app-download-background-light);
}

.page-app-download__feature-list {
    list-style: none;
    padding: 0;
    margin: 0 auto;
    max-width: 900px;
}

.page-app-download__feature-list li {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    background-color: var(--page-app-download-text-light);
    padding: 20px 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    font-size: 1.1em;
    color: var(--page-app-download-text-dark);
}

.page-app-download__list-icon {
    width: 40px;
    height: 40px;
    margin-right: 20px;
    flex-shrink: 0;
    filter: drop-shadow(0 2px 4px rgba(0, 51, 102, 0.2));
}

.page-app-download__feature-list li strong {
    color: var(--page-app-download-primary-color);
}

.page-app-download__call-to-action {
    text-align: center;
    margin-top: 50px;
    font-size: 1.3em;
    font-weight: bold;
    color: var(--page-app-download-primary-color);
}

.page-app-download__btn--large {
    font-size: 1.4em;
    padding: 18px 45px;
    display: block;
    margin: 30px auto 0 auto;
    max-width: 400px;
}

/* Promo Section */
.page-app-download__promo-section {
    padding: 80px 0;
    background-color: var(--page-app-download-primary-color);
    color: var(--page-app-download-text-light);
}

.page-app-download__promo-section .page-app-download__section-title,
.page-app-download__promo-section .page-app-download__promo-description,
.page-app-download__promo-section .page-app-download__promo-cta {
    color: var(--page-app-download-text-light);
}

.page-app-download__promo-section .page-app-download__section-title::after {
    background-color: var(--page-app-download-secondary-color);
}

.page-app-download__promo-image {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto 40px auto;
    border-radius: 10px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}

.page-app-download__promo-list {
    list-style: none;
    padding: 0;
    margin: 0 auto 40px auto;
    max-width: 800px;
}

.page-app-download__promo-list li {
    background-color: #002d5a;
    margin-bottom: 15px;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    font-size: 1.1em;
    line-height: 1.5;
}

.page-app-download__promo-list li strong {
    color: var(--page-app-download-secondary-color);
}

/* Security Section */
.page-app-download__security-section {
    padding: 80px 0;
    background-color: var(--page-app-download-background-light);
}

.page-app-download__security-content {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
    justify-content: center;
}

.page-app-download__security-item {
    background-color: var(--page-app-download-text-light);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    flex: 1;
    min-width: 300px;
    max-width: 500px;
    text-align: center;
}

.page-app-download__security-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    filter: drop-shadow(0 4px 8px rgba(0, 51, 102, 0.2));
}

.page-app-download__security-subtitle {
    font-size: 1.8em;
    color: var(--page-app-download-primary-color);
    margin-bottom: 15px;
}

.page-app-download__security-item p {
    font-size: 1em;
    color: #666666;
}

/* FAQ Section */
.page-app-download__faq-section {
    padding: 80px 0;
    background-color: var(--page-app-download-background-dark);
    color: var(--page-app-download-text-light);
}

.page-app-download__faq-section .page-app-download__section-title {
    color: var(--page-app-download-text-light);
}

.page-app-download__faq-section .page-app-download__section-title::after {
    background-color: var(--page-app-download-secondary-color);
}

.page-app-download__faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
}

.page-app-download__faq-item {
    background-color: #002d5a;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-app-download__faq-question {
    font-size: 1.3em;
    color: var(--page-app-download-secondary-color);
    margin-bottom: 10px;
    cursor: pointer;
    position: relative;
    padding-right: 30px;
}

.page-app-download__faq-question::after {
    content: '+';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5em;
    color: var(--page-app-download-secondary-color);
    transition: transform 0.3s ease;
}

.page-app-download__faq-question.active::after {
    content: '-';
    transform: translateY(-50%) rotate(180deg);
}

.page-app-download__faq-answer {
    font-size: 1em;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 10px;
    display: none;
}

.page-app-download__faq-answer.active {
    display: block;
}

/* CTA Bottom Section */
.page-app-download__cta-bottom-section {
    padding: 80px 0;
    background-color: var(--page-app-download-background-light);
    text-align: center;
}

.page-app-download__cta-bottom-section .page-app-download__section-title {
    color: var(--page-app-download-primary-color);
}

.page-app-download__cta-bottom-section .page-app-download__section-title::after {
    background-color: var(--page-app-download-secondary-color);
}

.page-app-download__btn--xl {
    font-size: 1.6em;
    padding: 20px 50px;
    max-width: 500px;
    margin-top: 40px;
}

/* Responsive Design */
@media (max-width: 992px) {
    .page-app-download__hero-title {
        font-size: 2.8em;
    }
    .page-app-download__hero-description {
        font-size: 1.1em;
    }
    .page-app-download__section-title {
        font-size: 2em;
    }
    .page-app-download__platform-guide {
        flex-direction: column;
        align-items: center;
    }
    .page-app-download__platform-item {
        min-width: unset;
        max-width: 100%;
    }
    .page-app-download__features-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    .page-app-download__hero-section {
        padding: 80px 0;
    }
    .page-app-download__hero-title {
        font-size: 2.2em;
    }
    .page-app-download__hero-description {
        font-size: 1em;
    }
    .page-app-download__hero-buttons .page-app-download__btn {
        display: block;
        width: 80%;
        margin: 15px auto;
    }
    .page-app-download__section-title {
        font-size: 1.8em;
    }
    .page-app-download__features-section, .page-app-download__download-guide-section, .page-app-download__key-features-section, .page-app-download__promo-section, .page-app-download__security-section, .page-app-download__faq-section, .page-app-download__cta-bottom-section {
        padding: 60px 0;
    }
    .page-app-download__feature-list li {
        flex-direction: column;
        text-align: center;
        padding: 20px;
    }
    .page-app-download__list-icon {
        margin: 0 auto 15px auto;
    }
    .page-app-download__security-content {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .page-app-download__hero-title {
        font-size: 1.8em;
    }
    .page-app-download__hero-description {
        font-size: 0.9em;
    }
    .page-app-download__section-title {
        font-size: 1.5em;
    }
    .page-app-download__hero-buttons .page-app-download__btn {
        width: 90%;
    }
    .page-app-download__btn--large {
        font-size: 1.2em;
        padding: 15px 30px;
        max-width: 90%;
    }
    .page-app-download__btn--xl {
        font-size: 1.4em;
        padding: 18px 40px;
        max-width: 90%;
    }
    .page-app-download__platform-item {
        padding: 30px 20px;
    }
    .page-app-download__guide-list li {
        font-size: 0.95em;
        padding-left: 25px;
    }
    .page-app-download__guide-list li::before {
        width: 22px;
        height: 22px;
        line-height: 22px;
        font-size: 0.8em;
    }
    .page-app-download__promo-list li {
        font-size: 1em;
        padding: 15px;
    }
}