body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: linear-gradient(to right, #0f2027, #203a43, #2c5364);
    color: white;
}

/* HEADER */
header {
    text-align: center;
    padding: 20px;
    background: rgba(0,0,0,0.4);
}

/* NAV */
nav a {
    color: white;
    margin: 10px;
    text-decoration: none;
    font-weight: bold;
}

nav a:hover {
    color: #00ffd5;
}

/* HERO */
.hero {
    text-align: center;
    padding: 50px 20px;
}

/* PROFILE GLASS CARD */
.profile-card {
    width: 180px;
    height: 180px;
    margin: auto;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: rgba(255,255,255,0.12);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.25);
    box-shadow: 0 0 25px rgba(0,255,213,0.25);
}

.profile-pic {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid #00ffd5;
}

/* CARD SECTIONS */
.card {
    background: rgba(255,255,255,0.1);
    margin: 20px;
    padding: 20px;
    border-radius: 12px;
    backdrop-filter: blur(6px);
}

/* TABLE */
table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    border: 1px solid white;
    padding: 10px;
}

/* FORM */
form {
    display: flex;
    flex-direction: column;
}

input, textarea {
    margin: 5px 0;
    padding: 10px;
    border: none;
    border-radius: 5px;
}

button {
    padding: 10px;
    background: #00ffd5;
    border: none;
    font-weight: bold;
    cursor: pointer;
}

/* CERTIFICATES */
.cert-grid {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.cert {
    width: 220px;
    padding: 15px;
    border-radius: 12px;
    background: rgba(255,255,255,0.12);
    text-align: center;
    transition: 0.3s;
}

.cert:hover {
    transform: scale(1.05);
}

.cert img {
    width: 100%;
    height: 140px;
    object-fit: cover;
    border-radius: 8px;
    border: 2px solid #00ffd5;
    cursor: pointer;
}

.cert img:hover {
    filter: brightness(1.08);
}

.image-viewer {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(0,0,0,0.9);
}

.image-viewer.active {
    display: flex;
}

.image-viewer img {
    max-width: 95vw;
    max-height: 90vh;
    object-fit: contain;
    border: 2px solid #00ffd5;
    border-radius: 8px;
    box-shadow: 0 0 30px rgba(0,255,213,0.25);
}

.image-viewer-close {
    position: absolute;
    top: 18px;
    right: 24px;
    width: 44px;
    height: 44px;
    padding: 0;
    border-radius: 50%;
    color: white;
    background: rgba(255,255,255,0.15);
    font-size: 32px;
    line-height: 1;
}

.image-viewer-close:hover {
    background: #00ffd5;
    color: #0f2027;
}

/* FOOTER */
footer {
    text-align: center;
    padding: 15px;
    background: rgba(0,0,0,0.4);
}