/* Variables & Reset (Systems / Terminal Dark Theme) */
:root {
    --bg-main: #0a0e17;
    --bg-surface: #131a28;
    --border-color: #2a364d;
    --text-primary: #d1d5db;
    --text-muted: #8b949e;
    
    --sys-blue: #60a5fa;
    --sys-green: #34d399;
    --sys-purple: #c084fc;
    --sys-dir: #9ca3af;
    
    --color-linkedin: #0a66c2;
    --color-github: #ffffff;
    --color-stackoverflow: #f58025;
    --color-x: #e7e9ea; 

    --font-sans: 'Inter', sans-serif;
    --font-mono: 'Fira Code', monospace;
    --transition: 0.3s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-primary);
    line-height: 1.6;
}
.container { max-width: 900px; margin: 0 auto; padding: 0 20px; }

/* Typography & System Aesthetics */
h1, h2, h3 { color: var(--text-primary); }
.text-highlight { color: var(--text-primary); }
.text-muted { color: var(--text-muted); }
.sys-green { color: var(--sys-green); }
.sys-blue { color: var(--sys-blue); }

.sys-heading {
    font-family: var(--font-mono);
    font-size: 1.8rem;
    margin-bottom: 2rem;
    font-weight: 600;
    color: var(--sys-blue);
}
.sys-heading .dir { color: var(--sys-dir); font-weight: 400; }
.at { color: var(--sys-green); font-weight: 400; }

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    position: fixed;
    width: 100%;
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(8px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}
.logo { font-family: var(--font-mono); font-weight: 600; font-size: 1.5rem; color: var(--sys-blue); }
.nav-links { display: flex; list-style: none; gap: 20px; font-family: var(--font-mono); font-size: 0.9rem;}
.nav-links a { color: var(--text-primary); text-decoration: none; transition: var(--transition); }
.nav-links a:hover { color: var(--sys-blue); }

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    background-color: transparent;
    color: var(--sys-green);
    border: 1px solid var(--sys-green);
    border-radius: 4px;
    font-family: var(--font-mono);
    text-decoration: none;
    transition: var(--transition);
    margin-top: 1.5rem;
}
.btn:hover { background-color: rgba(52, 211, 153, 0.1); box-shadow: 0 0 10px rgba(52, 211, 153, 0.2); }

/* Back to Top */
.back-to-top {
    position: fixed; bottom: 30px; right: 30px;
    background-color: var(--bg-surface); color: var(--sys-blue);
    border: 1px solid var(--sys-blue); width: 45px; height: 45px; border-radius: 50%;
    display: flex; justify-content: center; align-items: center;
    text-decoration: none; font-size: 1.2rem;
    opacity: 0; visibility: hidden; transition: all 0.3s ease; z-index: 999;
}
.back-to-top.show { opacity: 1; visibility: visible; }
.back-to-top:hover { background-color: var(--sys-blue); color: var(--bg-main); transform: translateY(-5px); }

/* Terminal Window & Interactive Elements */
.terminal-window {
    background-color: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 8px; overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
    margin: 0 auto; text-align: left; width: 100%; max-width: 750px;
}
.terminal-header { background-color: #1a2235; padding: 10px; display: flex; align-items: center; border-bottom: 1px solid var(--border-color); }
.mac-btn { width: 12px; height: 12px; border-radius: 50%; margin-right: 8px; display: inline-block; }
.close { background-color: #ff5f56; }
.minimize { background-color: #ffbd2e; }
.expand { background-color: #27c93f; }
.terminal-title { font-family: var(--font-mono); font-size: 0.8rem; color: var(--text-muted); margin-left: auto; margin-right: auto; padding-right: 50px; }

.terminal-body { padding: 30px; font-family: var(--font-mono); font-size: 0.95rem; }
.interactive-term { height: 350px; overflow-y: auto; cursor: text; }
.interactive-term::-webkit-scrollbar { width: 8px; }
.interactive-term::-webkit-scrollbar-thumb { background: var(--border-color); border-radius: 4px; }

.prompt { color: var(--sys-green); margin-right: 10px; }
.output { color: var(--text-primary); margin: 5px 0 15px 0; }
.input-line { display: flex; align-items: center; }
#cmd-input {
    background: transparent; border: none; outline: none;
    color: var(--text-primary); font-family: var(--font-mono); font-size: 0.95rem;
    flex-grow: 1; caret-color: var(--text-primary);
}

/* Sections */
section { padding: 100px 0 40px; }
#hero { height: 100vh; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; }

/* Grid & Cards */
.project-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); 
    gap: 30px; 
}

.skills-grid { 
    display: grid; 
    /* This creates the 1:2:1 ratio for the three columns */
    grid-template-columns: 1fr 2fr 1fr; 
    gap: 30px; 
}
.skill-category h3 { font-family: var(--font-mono); color: var(--sys-blue); font-size: 1.1rem; margin-bottom: 15px; border-bottom: 1px solid var(--border-color); padding-bottom: 8px; }

.project-card { background-color: var(--bg-surface); border: 1px solid var(--border-color); padding: 25px; border-radius: 6px; transition: var(--transition); }
.project-card:hover { border-color: var(--sys-blue); transform: translateY(-3px); }
.project-card h3 { font-family: var(--font-mono); font-size: 1.2rem; color: var(--sys-purple); margin-bottom: 10px;}
.project-card p { color: var(--text-muted); font-size: 0.95rem; margin-bottom: 15px;}
.tech-stack { display: flex; gap: 10px; margin-bottom: 20px; flex-wrap: wrap;}
.tech-stack span { font-family: var(--font-mono); font-size: 0.75rem; color: var(--text-muted); background: var(--bg-main); padding: 4px 8px; border-radius: 4px; border: 1px solid var(--border-color);}
.project-link { font-family: var(--font-mono); color: var(--sys-blue); text-decoration: none; font-size: 0.9rem;}
.project-link:hover { text-decoration: underline; }

/* Timeline */
.timeline { border-left: 2px solid var(--border-color); padding-left: 30px; margin-left: 10px; position: relative; }
.timeline-item { position: relative; margin-bottom: 40px; }
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot { position: absolute; left: -37px; top: 5px; width: 12px; height: 12px; border-radius: 50%; background-color: var(--bg-main); border: 2px solid var(--sys-blue); box-shadow: 0 0 8px rgba(96, 165, 250, 0.4); }
.timeline-content h3 { font-size: 1.3rem; margin-bottom: 5px; }
.date { display: inline-block; font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-muted); margin-bottom: 10px; }
.timeline-content p { color: var(--text-muted); }

/* Split Layout */
.split-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.sys-list { list-style: none; color: var(--text-primary); }
.sys-list li { margin-bottom: 12px; display: flex; align-items: center; }
.list-icon { color: var(--sys-purple); margin-right: 12px; font-size: 0.8rem; font-weight: bold; }

/* Contact & Socials */
.text-center { text-align: center; }
.small-terminal { max-width: 600px; }
.small-terminal h2 { color: var(--sys-purple); margin-bottom: 15px; font-family: var(--font-mono); }
.small-terminal p { color: var(--text-muted); margin-bottom: 25px;}

.large-icons { display: flex; justify-content: center; gap: 25px; margin-bottom: 30px; flex-wrap: wrap; }
.social-btn { display: flex; align-items: center; justify-content: center; width: 50px; height: 50px; background-color: var(--bg-main); color: var(--text-muted); border: 1px solid var(--border-color); border-radius: 12px; font-size: 1.5rem; text-decoration: none; transition: all 0.3s ease; }
.social-btn:hover { transform: translateY(-5px) scale(1.1); box-shadow: 0 5px 15px rgba(0,0,0,0.3); }
.social-btn.linkedin:hover { color: var(--color-linkedin); border-color: var(--color-linkedin); }
.social-btn.github:hover { color: var(--color-github); border-color: var(--color-github); }
.social-btn.stackoverflow:hover { color: var(--color-stackoverflow); border-color: var(--color-stackoverflow); }
.social-btn.x-corp:hover { color: var(--color-x); border-color: var(--color-x); }

footer { text-align: center; padding: 40px 0; border-top: 1px solid var(--border-color); font-family: var(--font-mono); font-size: 0.85rem; color: var(--text-muted); }

/* Inline Text Links */
.text-link {
    color: var(--sys-blue);
    text-decoration: none;
    border-bottom: 1px dashed var(--sys-blue);
    transition: var(--transition);
    font-weight: 600;
}
.text-link:hover {
    color: var(--sys-green);
    border-bottom-color: var(--sys-green);
    background-color: rgba(52, 211, 153, 0.1);
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .sys-heading { font-size: 1.4rem; }
    .split-layout { grid-template-columns: 1fr; gap: 30px; }
    
    /* Add this line to stack the skills on mobile */
    .skills-grid { grid-template-columns: 1fr; } 

}