/* style/contact.css */

/* Biến CSS */
:root {
    --page-contact-primary-color: #1A202C;
    --page-contact-accent-color: #FFD700;
    --page-contact-text-light: #F5F5F5;
    --page-contact-text-dark: #1A202C;
    --page-contact-background-dark: #1A202C;
    --page-contact-background-light: #FFFFFF;
    --page-contact-border-color: #333C4B;
    --page-contact-form-bg: #2A313F;
    --page-contact-input-bg: #3E4756;
    --page-contact-placeholder-color: #A0AEC0;
}

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

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

.page-contact__hero {
    background: linear-gradient(135deg, var(--page-contact-background-dark) 0%, #303B4C 100%);
    padding: 80px 0;
    text-align: center;
    color: var(--page-contact-text-light);
}

.page-contact__title {
    font-size: 3.5em;
    margin-bottom: 15px;
    color: var(--page-contact-accent-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-contact__subtitle {
    font-size: 1.3em;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.page-contact__btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.3s ease;
    font-size: 1.1em;
    border: none;
    cursor: pointer;
}

.page-contact__btn--primary {
    background-color: var(--page-contact-accent-color);
    color: var(--page-contact-primary-color);
}

.page-contact__btn--primary:hover {
    background-color: #e6c200;
    transform: translateY(-2px);
}

.page-contact__info-section {
    padding: 60px 0;
    background-color: #242B38;
}

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

.page-contact__info-card {
    background-color: var(--page-contact-form-bg);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--page-contact-border-color);
}

.page-contact__info-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 20px;
    filter: invert(80%) sepia(100%) saturate(1000%) hue-rotate(0deg) brightness(120%) contrast(100%); /* Make icons golden */
}

.page-contact__card-title {
    font-size: 1.8em;
    color: var(--page-contact-accent-color);
    margin-bottom: 15px;
}

.page-contact__card-description {
    font-size: 1em;
    color: var(--page-contact-text-light);
    margin-bottom: 20px;
}

.page-contact__card-contact-detail {
    font-size: 1.1em;
    color: var(--page-contact-text-light);
}

.page-contact__card-contact-detail a {
    color: var(--page-contact-accent-color);
    text-decoration: none;
}

.page-contact__card-contact-detail a:hover {
    text-decoration: underline;
}

.page-contact__btn--secondary {
    background-color: #4A5568;
    color: var(--page-contact-text-light);
    margin-top: 20px;
}

.page-contact__btn--secondary:hover {
    background-color: #636B7F;
    transform: translateY(-2px);
}

.page-contact__social-links {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 15px;
}

.page-contact__social-link {
    display: inline-block;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #4A5568;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
}

.page-contact__social-link:hover {
    background-color: var(--page-contact-accent-color);
}

.page-contact__social-link img {
    width: 24px;
    height: 24px;
    filter: brightness(0) invert(1);
}

.page-contact__social-link:hover img {
    filter: brightness(0) invert(0); /* Reset filter for hover to show original color if desired, or keep invert for dark icon */
}

.page-contact__form-section {
    padding: 60px 0;
    background-color: var(--page-contact-background-dark);
}

.page-contact__section-title {
    font-size: 2.5em;
    color: var(--page-contact-accent-color);
    text-align: center;
    margin-bottom: 20px;
}

.page-contact__section-description {
    font-size: 1.1em;
    color: var(--page-contact-text-light);
    text-align: center;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.page-contact__form {
    max-width: 700px;
    margin: 0 auto;
    background-color: var(--page-contact-form-bg);
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
    border: 1px solid var(--page-contact-border-color);
}

.page-contact__form-group {
    margin-bottom: 25px;
}

.page-contact__form-label {
    display: block;
    margin-bottom: 10px;
    font-size: 1.1em;
    color: var(--page-contact-text-light);
    font-weight: bold;
}

.page-contact__form-input,
.page-contact__form-textarea {
    width: 100%;
    padding: 15px;
    border: 1px solid var(--page-contact-border-color);
    border-radius: 8px;
    background-color: var(--page-contact-input-bg);
    color: var(--page-contact-text-light);
    font-size: 1em;
    transition: border-color 0.3s ease;
}

.page-contact__form-input::placeholder,
.page-contact__form-textarea::placeholder {
    color: var(--page-contact-placeholder-color);
}

.page-contact__form-input:focus,
.page-contact__form-textarea:focus {
    border-color: var(--page-contact-accent-color);
    outline: none;
}

.page-contact__form-textarea {
    resize: vertical;
}

.page-contact__btn--submit {
    width: 100%;
    background-color: var(--page-contact-accent-color);
    color: var(--page-contact-primary-color);
    padding: 15px;
    border-radius: 8px;
    font-size: 1.2em;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.3s ease;
    border: none;
    cursor: pointer;
}

.page-contact__btn--submit:hover {
    background-color: #e6c200;
    transform: translateY(-2px);
}

.page-contact__faq-section {
    padding: 60px 0 80px;
    background-color: #242B38;
}

.page-contact__faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.page-contact__faq-item {
    background-color: var(--page-contact-form-bg);
    margin-bottom: 20px;
    padding: 25px;
    border-radius: 10px;
    border: 1px solid var(--page-contact-border-color);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.page-contact__faq-question {
    font-size: 1.4em;
    color: var(--page-contact-accent-color);
    margin-bottom: 15px;
    cursor: pointer;
    position: relative;
    padding-right: 30px; /* Space for indicator */
}

.page-contact__faq-question::after {
    content: '+';
    position: absolute;
    right: 0;
    top: 0;
    font-size: 1.2em;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.page-contact__faq-question.active::after {
    content: '-';
    transform: rotate(0deg); /* No rotation for plus/minus */
}

.page-contact__faq-answer {
    font-size: 1em;
    color: var(--page-contact-text-light);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease-out;
}

.page-contact__faq-answer.open {
    max-height: 200px; /* Adjust based on expected content length */
    padding-top: 15px;
}

.page-contact__faq-answer a {
    color: var(--page-contact-accent-color);
    text-decoration: none;
    font-weight: bold;
}

.page-contact__faq-answer a:hover {
    text-decoration: underline;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .page-contact__hero {
        padding: 60px 0;
    }

    .page-contact__title {
        font-size: 2.5em;
    }

    .page-contact__subtitle {
        font-size: 1.1em;
    }

    .page-contact__grid {
        grid-template-columns: 1fr;
    }

    .page-contact__info-card {
        padding: 25px;
    }

    .page-contact__card-title {
        font-size: 1.5em;
    }

    .page-contact__section-title {
        font-size: 2em;
    }

    .page-contact__form {
        padding: 30px;
    }

    .page-contact__faq-question {
        font-size: 1.2em;
    }
}

@media (max-width: 480px) {
    .page-contact__hero {
        padding: 40px 0;
    }

    .page-contact__title {
        font-size: 2em;
    }

    .page-contact__subtitle {
        font-size: 1em;
    }

    .page-contact__btn {
        padding: 12px 25px;
        font-size: 1em;
    }

    .page-contact__form {
        padding: 20px;
    }

    .page-contact__form-label {
        font-size: 1em;
    }

    .page-contact__form-input,
    .page-contact__form-textarea {
        padding: 12px;
    }

    .page-contact__btn--submit {
        padding: 12px;
        font-size: 1.1em;
    }

    .page-contact__faq-question {
        font-size: 1.1em;
    }
}