/* =========================================
   1. CORE VARIABLES (Cyber-Minimalist)
   ========================================= */
:root {
    /* Unified Dark Canvas */
    --bg-base: #030305;
    --bg-surface: rgba(15, 15, 20, 0.65);
    
    /* Text */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    
    /* Accents (Neon Emerald / Cyan) */
    --accent: #10b981;
    --accent-glow: rgba(16, 185, 129, 0.4);
    --accent-alt: #0ea5e9;
    
    /* UI Elements */
    --border-light: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(16, 185, 129, 0.3);
    
    /* Shadows & Glass */
    --glass-blur: blur(12px);
    --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
    
    /* Typography */
    --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

/* Custom Cyber Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}
::-webkit-scrollbar-track {
    background: var(--bg-base);
}
::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

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

body {
    font-family: var(--font-sans);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: var(--bg-base);
    color: var(--text-primary);
    background-image: radial-gradient(var(--border-light) 1px, transparent 1px);
    background-size: 32px 32px;
}

a {
    color: inherit; text-decoration: none;
    transition: all 0.2s ease;
}

a:focus-visible {
    outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 4px;
}

.mono {
    font-family: var(--font-mono);
    font-size: 0.85em; font-weight: 500;
    color: var(--accent);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    padding: 2px 6px; border-radius: 4px;
}

.highlight { font-weight: 700; color: var(--accent-alt); text-shadow: 0 0 10px rgba(14, 165, 233, 0.3); }

/* =========================================
   2. LAYOUT ARCHITECTURE
   ========================================= */
.split-layout { 
    display: flex; 
    min-height: 100vh;
    max-width: 1600px;
    margin: 0 auto;
}

/* LEFT PANE */
.sidebar {
    width: 35%; 
    padding: 5rem 3rem; 
    position: sticky; top: 0; height: 100vh;
    display: flex; flex-direction: column; justify-content: space-between;
}

.profile-section { display: flex; flex-direction: column; gap: 1.5rem; }

.avatar-ring {
    position: relative; display: inline-flex; padding: 2px; border-radius: 16px; margin-bottom: 1rem; width: max-content;
    background: linear-gradient(135deg, var(--accent), var(--accent-alt));
    box-shadow: 0 0 20px var(--accent-glow);
}

.avatar { 
    width: 100px; height: 100px; 
    border-radius: 14px; 
    object-fit: cover; 
    background-color: var(--bg-base);
}

.name {
    font-size: 3rem; font-weight: 800; line-height: 1.1; letter-spacing: -0.04em;
    color: var(--text-primary);
}

.title { 
    font-size: 1.1rem; font-weight: 500; 
    font-family: var(--font-mono);
    color: var(--accent); 
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.title-link {
    display: inline-block;
    color: var(--accent);
    transition: all 0.2s ease;
    cursor: pointer;
    text-decoration: none;
}

.title-link:hover {
    color: var(--accent-alt);
    text-shadow: 0 0 10px rgba(14, 165, 233, 0.4);
}

.bio { 
    font-size: 1.05rem; color: var(--text-secondary); line-height: 1.7; 
}

.social-links { display: flex; gap: 1rem; }
.social-links a {
    color: var(--text-secondary);
    background: var(--bg-surface);
    border: 1px solid var(--border-light);
    padding: 12px; border-radius: 10px; display: flex; align-items: center; justify-content: center;
    transition: all 0.3s ease;
}

.social-links a:hover {
    color: var(--accent);
    border-color: var(--accent);
    box-shadow: 0 0 15px var(--accent-glow);
    transform: translateY(-3px);
}

/* RIGHT PANE */
.main-content {
    width: 65%; 
    padding: 5rem 4rem 5rem 2rem; 
    display: flex; flex-direction: column; gap: 6rem;
}

.section { display: flex; flex-direction: column; gap: 2.5rem; }

.section-title {
    font-size: 0.9rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.15em;
    color: var(--text-secondary); display: flex; align-items: center; gap: 0.75rem;
}
.section-icon { color: var(--text-primary); width: 18px; height: 18px; stroke-width: 2; }

/* Terminal/Glass Cards */
.content-card, .project-card, .skills-wrapper {
    background-color: var(--bg-surface);
    backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
    padding: 2rem; border-radius: 16px;
    border: 1px solid var(--border-light);
    box-shadow: var(--shadow-card);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1), 
                border-color 0.3s ease;
    will-change: transform, box-shadow;
}

.content-card:hover, .project-card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 12px 40px -12px var(--accent-glow);
    transform: translateY(-4px) scale(1.01); 
}

/* Academic */
.cards-list { display: flex; flex-direction: column; gap: 1rem; }
.card-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 0.5rem; flex-wrap: wrap; gap: 1rem; }
.card-title { font-size: 1.1rem; font-weight: 600; color: var(--text-primary); }
.badge {
    background: transparent;
    border: 1px solid var(--border-light);
    color: var(--text-secondary); font-size: 0.75rem; padding: 0.3rem 0.8rem; border-radius: 6px; font-family: var(--font-mono);
}
.card-subtitle { font-size: 0.9rem; font-family: var(--font-mono); color: var(--accent-alt); margin-bottom: 0.75rem; }
.card-desc { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.5; }

/* Projects */
.project-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
.project-card { display: flex; flex-direction: column; gap: 1rem; cursor: pointer; }
.project-card.wide { grid-column: 1 / -1; }
.project-title { 
    font-size: 1.2rem; font-weight: 600; 
    display: flex; align-items: center; gap: 0.5rem;
}
.project-title::before {
    content: ''; display: inline-block; width: 8px; height: 8px; background: var(--accent); border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-glow);
}
.project-desc { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.6; }

/* Skills Matrix */
.skills-wrapper { display: flex; flex-direction: column; gap: 2rem; }
.skill-row { display: flex; flex-direction: column; gap: 1rem; }
.skill-category { font-size: 0.85rem; font-family: var(--font-mono); color: var(--accent-alt); text-transform: uppercase; letter-spacing: 0.1em; }
.skill-tags { display: flex; flex-wrap: wrap; gap: 0.75rem; }
.tag {
    font-family: var(--font-mono); font-size: 0.85rem;
    background-color: rgba(255,255,255,0.03); color: var(--text-primary);
    border: 1px solid var(--border-light); padding: 0.4rem 1rem; border-radius: 8px;
    transition: all 0.2s ease;
}
.tag:hover {
    background-color: rgba(16, 185, 129, 0.1); 
    color: var(--accent); border-color: var(--accent); 
    box-shadow: 0 0 15px var(--accent-glow);
}

/* Footer */
.footer { text-align: left; color: var(--text-secondary); font-size: 0.8rem; padding-top: 2rem; font-family: var(--font-mono); }

/* =========================================
   3. ANIMATIONS & RESPONSIVE
   ========================================= */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 0.6s ease-out, transform 0.6s ease-out; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1024px) {
    .split-layout { flex-direction: column; }
    .sidebar { width: 100%; height: auto; position: relative; padding: 3rem 1.5rem 1.5rem 1.5rem; }
    .main-content { width: 100%; padding: 1.5rem 1.5rem 4rem 1.5rem; gap: 4rem;}
    .project-grid { grid-template-columns: 1fr; }
    .content-card:hover, .project-card:hover { transform: translateY(-3px); }
}