/* Global */
body {
    margin: 0;
    font-family: 'Segoe UI', Arial, sans-serif;
    background: linear-gradient(135deg, #0f172a, #1e3a8a);
    color: #f8fafc;
    line-height: 1.7;
    scroll-behavior: smooth;
}

/* Soft floating glow */
body::before {
    content: "";
    position: fixed;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(56,189,248,0.25), transparent 70%);
    top: -150px;
    right: -150px;
    z-index: -1;
    animation: floatGlow 10s ease-in-out infinite alternate;
}

@keyframes floatGlow {
    from { transform: translateY(0px); }
    to { transform: translateY(40px); }
}

/* Header */
header {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    padding: 2rem;
    border-bottom: 2px solid #38bdf8;
    position: sticky;
    top: 0;
    z-index: 1000;
}

/* Headings */
h1 {
    margin: 0;
    font-size: 2.2rem;
    color: #38bdf8;
}

h2 {
    color: #93c5fd;
}

h3 {
    color: #60a5fa;
}

/* Navigation */
nav {
    margin-top: 1rem;
}

nav a {
    margin-right: 20px;
    color: #f8fafc;
    text-decoration: none;
    font-weight: 500;
    transition: 0.3s ease;
}

nav a:hover {
    color: #38bdf8;
    text-shadow: 0 0 10px rgba(56,189,248,0.6);
}

/* Layout */
section {
    padding: 2rem;
    margin: 2rem auto;
    max-width: 1100px;
}

/* Cards */
.card {
    background: rgba(255, 255, 255, 0.06);
    padding: 2rem;
    border-radius: 16px;
    margin-bottom: 2rem;
    border: 1px solid rgba(255,255,255,0.1);
    backdrop-filter: blur(10px);
    transition: 0.3s ease;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(56,189,248,0.25);
    border-color: #38bdf8;
}

/* Badges (Certifications) */
.badge {
    display: inline-block;
    background: linear-gradient(90deg, #2563eb, #38bdf8);
    padding: 8px 14px;
    border-radius: 30px;
    font-size: 0.85rem;
    margin: 6px 6px 6px 0;
    font-weight: 500;
    transition: 0.3s ease;
}

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

/* Lists */
ul {
    padding-left: 1.2rem;
}

/* Links */
a {
    color: #38bdf8;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    margin-top: 3rem;
    color: #cbd5e1;
}