/* --- RESET & VARIABLES --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', sans-serif;
}

:root {
    --bg-dark: #111111;
    --card-bg: #1e1e1e;
    --text-main: #ffffff;
    --text-mute: #a6a6a6;
    --accent: #2563eb;
    /* Màu xanh dương chủ đạo */
    --radius: 20px;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
}

/* --- 1. HEADER COVER (ẢNH NỀN BIỂN) --- */
.header-cover {
    width: 100%;
    height: 200px;
    /* Chiều cao ảnh nền */
    /* Link ảnh biển giống mẫu - Bạn có thể thay link khác */
    background-image: url('image/banner5.gif');
    background-size: cover;
    background-position: center;
    position: relative;
}

/* Overlay mờ nhẹ trên ảnh cho đẹp (tùy chọn) */
.header-cover::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent, rgba(17, 17, 17, 0.8));
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 10;
    /* Nổi lên trên lớp phủ */
}

/* --- 2. PROFILE CARD (ĐÈ LÊN HEADER) --- */
.profile-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 40px;
    margin-top: -100px;
    /* QUAN TRỌNG: Kéo ngược lên để đè vào ảnh */
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 5px 15px rgba(120, 2, 94, 0.515);
    flex-wrap: wrap;
    /* Để xuống dòng khi mobile */
    gap: 30px;
}

/* Bên trái Profile */
.profile-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.avatar-box img {
    width: 120px;
    height: 120px;
    border-radius: 25px;
    /* Bo vuông tròn giống mẫu */
    object-fit: cover;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    border: 2px solid #333;
}

.profile-info h1 {
    font-size: 28px;
    margin-bottom: 5px;
}

.job-badge {
    background: #2b2b2b;
    color: #fff;
    padding: 5px 12px;
    border-radius: 8px;
    font-size: 13px;
    display: inline-block;
    margin-bottom: 15px;
}

.social-links a {
    color: var(--text-mute);
    font-size: 18px;
    margin-right: 15px;
    transition: 0.3s;
}

.social-links a:hover {
    color: var(--accent);
}

/* Bên phải Profile (Thông tin liên hệ) */
.profile-right {
    display: flex;
    gap: 40px;
}

.info-row {
    display: flex;
    flex-direction: column;
}

.info-row .label {
    font-size: 11px;
    color: #777;
    font-weight: bold;
    margin-bottom: 5px;
    letter-spacing: 1px;
}

.info-row .value {
    font-size: 14px;
    font-weight: 500;
}

/* --- 3. KHU VỰC DƯỚI (SIDEBAR + CONTENT) --- */
.content-area {
    display: flex;
    gap: 30px;
    margin-top: 30px;
    margin-bottom: 50px;
}

/* Sidebar Menu */
.sidebar {
    width: 90px;
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 30px 0;
    height: fit-content;
    position: sticky;
    top: 20px;
    display: flex;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(120, 2, 94, 0.515);
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 15px;
    width: 100%;
    align-items: center;
}

.nav-item {
    width: 60px;
    height: 60px;
    border: none;
    background: #2a2a2a;
    color: #aaa;
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: 0.3s;
    font-size: 11px;
    font-weight: 600;
}

.nav-item i {
    font-size: 20px;
    margin-bottom: 4px;
}

.nav-item:hover,
.nav-item.active {
    background: var(--accent);
    color: white;
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.4);
}

/* Nội dung chính */
.main-content {
    flex: 1;
    /* Chiếm hết chỗ còn lại */
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 40px;
    min-height: 400px;
    box-shadow: 0 5px 15px rgba(120, 2, 94, 0.515);
}

/* Style cho các Tab nội dung */
.tab-pane {
    display: none;
    animation: slideUp 0.5s ease;
}

.tab-pane.active {
    display: block;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header h2 {
    font-size: 26px;
    margin-bottom: 10px;
}

.section-header .line {
    width: 50px;
    height: 4px;
    background: var(--accent);
    border-radius: 2px;
    margin-bottom: 25px;
}

.bio {
    color: var(--text-mute);
    line-height: 1.7;
    margin-bottom: 30px;
}

.sub-heading {
    font-size: 22px;
    margin-bottom: 20px;
}

/* Grid Services */
.services-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.service-box {
    background: #252525;
    padding: 20px;
    border-radius: 15px;
    display: flex;
    gap: 15px;
    border: 1px solid #333;
    transition: 0.3s;
}

.service-box:hover {
    border-color: var(--accent);
    transform: translateY(-3px);
}

.service-box .icon {
    font-size: 26px;
    color: var(--accent);
    margin-top: 2px;
}

.service-box h4 {
    margin-bottom: 5px;
    font-size: 16px;
}

.service-box p {
    font-size: 13px;
    color: #999;
    line-height: 1.4;
}

/* --- RESPONSIVE MOBILE --- */
@media (max-width: 900px) {
    .header-cover {
        height: 200px;
    }

    .profile-card {
        margin-top: -50px;
        flex-direction: column;
        text-align: center;
        gap: 20px;
        padding: 20px;
    }

    .profile-left {
        flex-direction: column;
    }

    .profile-right {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
        width: 100%;
    }

    .content-area {
        flex-direction: column;
    }

    /* Menu Mobile nằm ngang dưới cùng hoặc trên cùng */
    .sidebar {
        width: 100%;
        position: fixed;
        bottom: 0;
        top: auto;
        left: 0;
        z-index: 100;
        border-radius: 0;
        padding: 10px;
        background: #1a1a1a;
    }

    .nav-menu {
        flex-direction: row;
        justify-content: space-around;
    }

    .nav-item {
        width: auto;
        height: 50px;
        padding: 0 15px;
        background: transparent;
    }

    .main-content {
        margin-bottom: 80px;
        padding: 20px;
    }

    /* Tránh bị menu che */
    .services-grid {
        grid-template-columns: 1fr;
    }
}

















/* secret */
/* --- SECRET LOGIN MODAL --- */
.modal-overlay {
    display: none;
    /* Mặc định ẩn */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    /* Nền đen mờ */
    z-index: 9999;
    /* Luôn nổi lên trên cùng */
    justify-content: center;
    align-items: center;
}

.login-box {
    background: #222;
    padding: 30px;
    border-radius: 15px;
    text-align: center;
    width: 300px;
    border: 1px solid #444;
    position: relative;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
}

.login-box h3 {
    color: white;
    margin-bottom: 10px;
}

.login-box p {
    color: #888;
    font-size: 13px;
    margin-bottom: 20px;
}

.login-box input {
    width: 100%;
    padding: 10px;
    border-radius: 5px;
    border: 1px solid #333;
    background: #111;
    color: white;
    margin-bottom: 15px;
    outline: none;
}

.login-box button {
    width: 100%;
    padding: 10px;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
}

.login-box button:hover {
    background: #1d4ed8;
}

.close-btn {
    position: absolute;
    top: 10px;
    right: 15px;
    color: #888;
    font-size: 24px;
    cursor: pointer;
}

.close-btn:hover {
    color: white;
}