/* ===============================
   CÁC TOKEN THIẾT KẾ (DESIGN TOKENS)
================================ */
:root {
    --black-deep: #0b0b0b;
    --black-soft: #121212;
    --black-elevated: #1a1a1a;

    --gold-main: var(--tsa-brand, #b8862f);

    /* Giao diện chung (modern.css) dùng nền sáng nên chữ phải đậm để dễ đọc. */
    --black-elevated: #ffffff;
    --text-primary: var(--tsa-ink, #111317);
    --text-secondary: #344054;
    --text-muted: #5b6475;

    --border-subtle: var(--tsa-line, #e3e7ee);
}
.team-name {
    color: var(--gold-main); /* tô màu vàng */
    -webkit-text-stroke: 1px #ffffff; /* viền trắng */
    font-weight: bold;
    font-size: 1.2em; /* tùy chọn, làm cho nó nổi bật */
    text-transform: uppercase; /* tùy chọn, làm cho nó ấn tượng hơn */
    letter-spacing: 1px; /* tùy chọn, cải thiện khả năng đọc */
}


/* ===============================
   ĐẶT LẠI (RESET)
================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Poppins", sans-serif;
    background: linear-gradient(180deg, #0b0b0b, #101010);
    color: var(--text-primary);
    line-height: 1.7;
}

/* Header dùng chung được style bởi modern.css (header > .header-content > .logo/.top-nav) */

/* ===============================
   PHẦN HERO (HERO SECTION)
================================ */
.about-hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;

    /* Sử dụng %20 cho khoảng trắng trong tên tệp */
    background-image: url('../assets/images/Hero%20Banner.png');
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
}

.about-hero .overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--gold-main);
    animation: fadeInUp 1.5s ease forwards;
}

.hero-content h1 {
    font-size: 64px;
    margin-bottom: 16px;
    color: var(--gold-main);
}

.hero-content p {
    font-size: 25px;
    color:whitesmoke;
    animation: fadeIn 2s ease 0.5s forwards;
    
}

/* ===============================
   PHẦN GIỚI THIỆU (ABOUT SECTION)
================================ */
.about-section {
    padding: 140px 10%;
}

.container {
    max-width: 1200px;
    margin: auto;
}

.section-title {
    font-size: 38px;
    color: var(--gold-main);
    margin-bottom: 24px;
}

.section-description {
    color: var(--text-secondary);
    margin-bottom: 40px;
}

h3 {
    font-size: 22px;
    font-weight: 600;
    color: var(--gold-main);
    margin-bottom: 12px;
    margin-top: 24px;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin: 32px 0 6px;
}

.about-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 20px 12px;
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    background: var(--black-elevated);
    text-align: center;
}

.about-stat strong {
    color: var(--gold-main);
    font-size: 32px;
    font-weight: 800;
}

.about-stat span {
    color: var(--text-secondary);
    font-size: 13px;
}

.about-stats-note {
    color: var(--text-muted);
    font-size: 12px;
    margin-bottom: 30px;
}

.feature-list {
    list-style: none;
    padding-left: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.feature-list li {
    background: var(--black-elevated);
    padding: 20px;
    border: 1px solid var(--border-subtle);
    color: var(--text-secondary);
}

.commitment-quote {
    color: var(--gold-main);
    font-size: 22px;
    font-weight: 600;
    margin: 10px 0 14px;
}

.slogan-list li {
    color: var(--gold-main);
    font-weight: 600;
}

.contact-strip {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 34px;
}

.contact-strip a {
    color: #0b0b0b;
    background: var(--gold-main);
    border-radius: 5px;
    padding: 10px 14px;
    text-decoration: none;
    font-weight: 700;
}

.footer a {
    display: inline-block;
    margin: 4px 2px;
}

/* ===============================
   CHÂN TRANG (FOOTER)
================================ */
.footer {
    padding: 40px 20px;
    border-top: 1px solid var(--border-subtle);
    text-align: center;
}

.footer p {
    max-width: 900px;
    margin: auto;
    font-size: 14px;
    color: var(--text-muted);
}

/* ===============================
   HIỆU ỨNG ĐỘNG (ANIMATIONS)
================================ */
@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(50px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    0% { opacity: 0; }
    100% { opacity: 1; }
}

@media (max-width: 900px) {
    .about-hero {
        height: auto;
        min-height: 60vh;
        padding: 60px 16px;
    }

    .hero-content h1 {
        font-size: 40px;
    }

    .hero-content p {
        font-size: 18px;
    }

    .about-section {
        padding: 60px 6%;
    }
}