/* =========================================
   1. Basic Setting & Fonts
   ========================================= */
body {
    font-family: "Open sans", Helvetica, Arial, sans-serif;
    line-height: 1.6;
    margin: 0;
    color: #444;
    background-color: #ffffff;
}

.container {
    width: 85%;
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
}

/* =========================================
   2. Background
   ========================================= */
.hero-section {
    position: relative;
    padding: 120px 0;
    overflow: hidden;
    color: white;
    text-align: center;
    background-color: #000;
}

.header-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('avatar.jpeg'); 
    background-size: cover;
    background-position: center;
    filter: grayscale(100%) brightness(35%) blur(4px);
    z-index: 1;
    transform: scale(1.1);
}

.header-content {
    position: relative;
    z-index: 2;
}

.avatar-container {
    margin-bottom: 25px;
}

.avatar {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    border: 4px solid rgba(255, 255, 255, 0.3);
    object-fit: cover;
    box-shadow: 0 10px 20px rgba(0,0,0,0.5);
}

.header-content h1 {
    font-size: 2.5rem;
    margin: 10px 0;
    text-shadow: 2px 2px 10px rgba(0,0,0,0.8);
}

.highlight {
    color: #3498db;
}

/* =========================================
   3. Body
   ========================================= */
section {
    padding: 60px 0;
    text-align: center;
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    position: relative;
    display: inline-block;
}

h2::after {
    content: '';
    width: 50px;
    height: 3px;
    background: #3498db;
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
}

/* =========================================
   4. Button
   ========================================= */
.button-group {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.btn {
    display: inline-flex;
    align-items: center;
    background: #3498db;
    color: #ffffff !important;
    padding: 14px 28px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.btn i {
    margin-right: 12px;
    font-size: 1.2em;
}

.btn:hover {
    background: #232323;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

/* =========================================
   5. Footer
   ========================================= */
#footer {
    background: #232323;
    padding: 40px 0;
    color: #888;
    text-align: center;
    font-size: 14px;
}

#footer a {
    color: #3498db;
    text-decoration: none;
}