:root {
    --primary: #004c9c;
    --bg-start: #f8f9fa;
    --bg-end: #d1d9e6;
    --text: #1f2937;
    --card-bg: #ffffff;
}

html, body {
    height: 100%;
    margin: 0;
}

body {
    background: linear-gradient(135deg, var(--bg-start) 0%, var(--bg-end) 100%) no-repeat fixed;
    color: var(--text);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    display: flex;
    justify-content: center;
    padding: 40px 20px;
}

.container {
    width: 100%;
    max-width: 450px;
    text-align: center;
}

.profile-image {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 15px;
    border: none !important;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

h1 { font-size: 1.8rem; margin: 0; color: var(--primary); font-weight: 800; }
header p { color: #6b7280; margin-bottom: 35px; font-size: 0.95rem; }

.category h2 {
    font-size: 0.85rem;
    text-align: left;
    margin: 25px 0 10px;
    color: #4b5563;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 700;
}

.btn {
    display: block;
    background-color: var(--card-bg);
    color: var(--text);
    text-decoration: none;
    padding: 18px;
    margin-bottom: 15px;
    border-radius: 18px;
    font-weight: 600;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.02);
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.btn:hover {
    transform: translateY(-4px);
    background-color: var(--primary);
    color: white;
    box-shadow: 0 10px 20px rgba(0, 123, 255, 0.2);
}

footer { margin-top: 50px; font-size: 0.8rem; color: #9ca3af; }