:root {
    --bg-color: #0d0d12;
    --card-bg: rgba(20, 20, 25, 0.8);
    --border-color: rgba(255, 255, 255, 0.1);
    --primary-color: #00ff41;
    /* Matrix Green */
    --secondary-color: #00f2ff;
    /* Cyber Blue */
    --text-main: #e0e0e0;
    --text-muted: #a0a0a0;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --glow-green: 0 0 10px rgba(0, 255, 65, 0.3);
    --glow-blue: 0 0 10px rgba(0, 242, 255, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Base Styles */
h1,
h2,
h3,
.mono {
    font-family: var(--font-mono);
    text-transform: uppercase;
    letter-spacing: 2px;
}

a {
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
}

/* Background Effect */
.bg-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(rgba(0, 255, 65, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 65, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
}

.bg-radial {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, transparent 0%, var(--bg-color) 70%);
    z-index: -1;
}

/* Layout */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    padding: 40px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: rgba(13, 13, 18, 0.8);
    backdrop-filter: blur(10px);
    z-index: 100;
}

.logo {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-color);
}

nav ul {
    display: flex;
    gap: 30px;
    list-style: none;
}

nav a {
    font-size: 0.9rem;
    color: var(--text-muted);
}

nav a:hover,
nav a.active {
    color: var(--primary-color);
}

/* Typography Helpers */
.glitch-text {
    position: relative;
    display: inline-block;
}

.glitch-text::after {
    content: attr(data-text);
    position: absolute;
    left: 2px;
    text-shadow: -1px 0 #ff00c1;
    top: 0;
    color: var(--text-main);
    background: var(--bg-color);
    overflow: hidden;
    clip: rect(0, 900px, 0, 0);
    animation: noise-anim 2s infinite linear alternate-reverse;
}

@keyframes noise-anim {
    0% {
        clip: rect(20px, 9999px, 50px, 0);
    }

    20% {
        clip: rect(80px, 9999px, 10px, 0);
    }

    40% {
        clip: rect(40px, 9999px, 90px, 0);
    }

    60% {
        clip: rect(10px, 9999px, 30px, 0);
    }

    80% {
        clip: rect(90px, 9999px, 70px, 0);
    }

    100% {
        clip: rect(50px, 9999px, 40px, 0);
    }
}

/* UI Elements */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    padding: 30px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--glow-green);
    transform: translateY(-5px);
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    font-family: var(--font-mono);
    cursor: pointer;
    border-radius: 4px;
}

.btn:hover {
    background: var(--primary-color);
    color: var(--bg-color);
    box-shadow: var(--glow-green);
}

/* Grids & Layouts */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.section-title {
    margin-top: 80px;
    margin-bottom: 40px;
    position: relative;
    display: flex;
    align-items: center;
    gap: 20px;
}

.section-title::after {
    content: "";
    flex-grow: 1;
    height: 1px;
    background: var(--border-color);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 40px auto;
}

.cert-card .icon-box i {
    width: 32px;
    height: 32px;
}

/* Modals */
.hidden {
    display: none !important;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: var(--bg-color);
    padding: 40px;
    border: 1px solid var(--primary-color);
    width: 600px;
    max-width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    border-radius: 4px;
    position: relative;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

@media (max-width: 768px) {
    nav ul {
        gap: 15px;
    }

    nav a {
        font-size: 0.7rem;
    }

    .grid {
        grid-template-columns: 1fr;
    }
}