:root {
    --bg-color: #0a0a0a;
    --terminal-green: #00FF41;
    --terminal-green-dim: #008f11;
    --terminal-green-glow: rgba(0, 255, 65, 0.2);
    --font-main: 'JetBrains Mono', 'Fira Code', monospace;
    --scanline-color: rgba(18, 16, 16, 0.1);
}

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

body {
    background-color: var(--bg-color);
    color: var(--terminal-green);
    font-family: var(--font-main);
    height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    text-shadow: 0 0 5px var(--terminal-green-glow);
}

/* CRT Effects */
.crt-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        rgba(18, 16, 16, 0) 50%,
        rgba(0, 0, 0, 0.25) 50%
    ), linear-gradient(
        90deg,
        rgba(255, 0, 0, 0.06),
        rgba(0, 255, 0, 0.02),
        rgba(0, 0, 255, 0.06)
    );
    z-index: 100;
    background-size: 100% 2px, 3px 100%;
    pointer-events: none;
}

.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        var(--scanline-color) 50%,
        transparent 50%
    );
    background-size: 100% 4px;
    z-index: 101;
    pointer-events: none;
    animation: scanline-scroll 10s linear infinite;
}

@keyframes scanline-scroll {
    0% { background-position: 0 0; }
    100% { background-position: 0 100%; }
}

/* Terminal Container */
#terminal {
    width: 90vw;
    height: 90vh;
    max-width: 1200px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    position: relative;
    border: 1px solid var(--terminal-green-dim);
    box-shadow: inset 0 0 20px var(--terminal-green-glow), 0 0 20px var(--terminal-green-glow);
    animation: screen-flicker 0.15s infinite;
}

@keyframes screen-flicker {
    0% { opacity: 0.993; }
    50% { opacity: 0.998; }
    100% { opacity: 0.991; }
}

.terminal-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--terminal-green-dim);
    padding-bottom: 0.5rem;
    font-size: 0.8rem;
    opacity: 0.8;
}

.terminal-output {
    flex-grow: 1;
    overflow-y: auto;
    margin-bottom: 1rem;
    scrollbar-width: thin;
    scrollbar-color: var(--terminal-green-dim) transparent;
}

.terminal-output::-webkit-scrollbar {
    width: 6px;
}

.terminal-output::-webkit-scrollbar-thumb {
    background-color: var(--terminal-green-dim);
}

/* Input Area */
.terminal-input-line {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.prompt {
    white-space: nowrap;
}

#terminal-input {
    background: transparent;
    border: none;
    color: var(--terminal-green);
    font-family: var(--font-main);
    font-size: 1rem;
    outline: none;
    flex-grow: 1;
    width: 0;
}

.cursor {
    display: inline-block;
    width: 10px;
    height: 1.2rem;
    background-color: var(--terminal-green);
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* Content Styling */
.section-title {
    font-size: 1.5rem;
    margin: 1.5rem 0 1rem 0;
    text-transform: uppercase;
    text-decoration: underline;
}

.command-echo {
    color: var(--terminal-green-dim);
    margin: 1rem 0;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.card {
    border: 1px solid var(--terminal-green-dim);
    padding: 1rem;
    transition: all 0.3s ease;
}

.card:hover {
    background: var(--terminal-green-glow);
    transform: translateY(-2px);
}

.highlight {
    color: white;
    font-weight: bold;
}

ul {
    list-style: none;
}

li::before {
    content: "> ";
}

/* Responsive */
@media (max-width: 768px) {
    #terminal {
        width: 100vw;
        height: 100vh;
        border: none;
        padding: 1rem;
    }
}