:root, [data-theme="blue"] {
    --bg:            #080d18;
    --surface:       #0f1729;
    --card:          #141e35;
    --border:        #1e2d4d;
    --text:          #c9d1d9;
    --text-dim:      #8b949e;
    --accent:        #58a6ff;
    --accent-purple: #bc8cff;
    --accent-green:  #3fb950;
    --accent-cyan:   #39d5d5;
    --canvas-rgb:    88,166,255;
}

[data-theme="green"] {
    --bg:            #050f07;
    --surface:       #091410;
    --card:          #0d1a12;
    --border:        #1a3020;
    --text:          #b8d4bc;
    --text-dim:      #6a8f6e;
    --accent:        #4ade80;
    --accent-purple: #86efac;
    --accent-green:  #22c55e;
    --accent-cyan:   #34d399;
    --canvas-rgb:    74,222,128;
}

[data-theme="amber"] {
    --bg:            #100c00;
    --surface:       #1a1400;
    --card:          #201900;
    --border:        #3d2f00;
    --text:          #e8d5b0;
    --text-dim:      #a08060;
    --accent:        #f59e0b;
    --accent-purple: #fb923c;
    --accent-green:  #84cc16;
    --accent-cyan:   #fbbf24;
    --canvas-rgb:    245,158,11;
}

[data-theme="purple"] {
    --bg:            #0d0818;
    --surface:       #150f25;
    --card:          #1c1433;
    --border:        #2d1f52;
    --text:          #d4c5e8;
    --text-dim:      #8b7aa8;
    --accent:        #c084fc;
    --accent-purple: #e879f9;
    --accent-green:  #a78bfa;
    --accent-cyan:   #818cf8;
    --canvas-rgb:    192,132,252;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 17px; overflow-x: hidden; }
body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    line-height: 1.7;
    overflow-x: hidden;
}

/* Canvas background */
#bg-canvas {
    position: fixed; inset: 0;
    width: 100%; height: 100%;
    pointer-events: none; z-index: 0;
}

/* Glow blobs */
.glow-blob {
    position: fixed; border-radius: 50%;
    filter: blur(120px); pointer-events: none;
    z-index: 0; opacity: 0.25;
    transition: transform 1.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.glow-blob-1 { width: 500px; height: 500px; background: var(--accent); top: -200px; left: -200px; }
.glow-blob-2 { width: 400px; height: 400px; background: var(--accent-purple); bottom: -150px; right: -150px; }

/* Cursor trail */
.trail {
    position: fixed; pointer-events: none; z-index: 999;
    font-family: 'JetBrains Mono', monospace;
    color: var(--accent-purple);
    font-size: 14px; opacity: 0.7;
    animation: trailFade 0.9s ease-out forwards;
    user-select: none;
}
@keyframes trailFade {
    0%   { opacity: 0.7; transform: translateY(0) scale(1); }
    100% { opacity: 0;   transform: translateY(-28px) scale(0.5); }
}

/* Toast */
#toast {
    position: fixed; bottom: 2rem; left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--surface); border: 1px solid var(--accent);
    color: var(--accent); font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem; padding: 0.5rem 1.1rem;
    border-radius: 8px; z-index: 500;
    opacity: 0; transition: opacity 0.2s, transform 0.2s;
    pointer-events: none;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* Terminal */
#terminal {
    position: fixed; inset: 0; z-index: 900;
    background: rgba(8,13,24,0);
    display: flex; align-items: center; justify-content: center;
    pointer-events: none;
    transition: background-color 0.2s;
}
#terminal.open { background: rgba(8,13,24,0.88); pointer-events: all; }
.term-window {
    width: min(680px, 92vw);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px; overflow: hidden;
    box-shadow: 0 8px 32px rgba(0,0,0,0.5);
    transform: translateZ(0);
    opacity: 0; transition: opacity 0.2s;
}
#terminal.open .term-window { opacity: 1; }
.term-bar {
    background: var(--card); padding: 0.7rem 1rem;
    display: flex; align-items: center; gap: 0.5rem;
    border-bottom: 1px solid var(--border);
}
.term-dot { width: 12px; height: 12px; border-radius: 50%; }
.term-dot.red    { background: #ff5f57; cursor: pointer; }
.term-dot.yellow { background: #febc2e; }
.term-dot.green  { background: #28c840; }
.term-title {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem; color: var(--text-dim);
    margin-left: 0.5rem;
}
.term-body {
    padding: 1.2rem; height: 340px; overflow-y: auto;
    font-family: 'JetBrains Mono', monospace; font-size: 0.82rem;
    line-height: 1.7;
}
.term-line { color: var(--text); white-space: pre-wrap; }
.term-line.prompt::before { content: '$ '; color: var(--accent-green); }
.term-line.out { color: var(--text-dim); }
.term-line.err { color: #ff7b72; }
.term-input-row {
    display: flex; align-items: center; gap: 0.3rem;
    padding: 0 1.2rem 1rem; margin-top: 0.2rem;
}
.term-prompt-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem; color: var(--accent-green);
    white-space: nowrap;
}
#term-input {
    background: transparent; border: none; outline: none;
    color: var(--text); font-family: 'JetBrains Mono', monospace;
    font-size: 0.82rem; flex: 1; caret-color: var(--accent);
}
.term-hint {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem; color: var(--text-dim);
    padding: 0.4rem 1.2rem 0.8rem;
    opacity: 0.6;
}
.term-body::-webkit-scrollbar { width: 4px; }
.term-body::-webkit-scrollbar-track { background: transparent; }
.term-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

/* Content */
.content {
    position: relative; z-index: 1;
    max-width: 860px; margin: 0 auto; padding: 0 2rem;
}

/* Hero */
.hero {
    min-height: 100vh; min-height: 100svh;
    display: flex; align-items: center;
    padding: 4rem 0 2rem;
}
.hero-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem; color: var(--accent);
    letter-spacing: 0.18em; text-transform: uppercase;
    margin-bottom: 1.2rem;
}
h1 {
    font-size: clamp(2.8rem, 7vw, 4.5rem);
    font-weight: 600; color: #fff;
    line-height: 1.05; margin-bottom: 0.6rem;
    letter-spacing: -0.02em;
}
.subtitle {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem; color: var(--accent-purple);
    margin-bottom: 1.8rem; min-height: 1.6em;
}
.cursor {
    display: inline-block; width: 2px; height: 0.9em;
    background: var(--accent-purple);
    animation: blink 1s step-end infinite;
    vertical-align: text-bottom; margin-left: 1px;
}
@keyframes blink { 50% { opacity: 0; } }
.location {
    display: inline-flex; align-items: center; gap: 0.4rem;
    font-size: 0.9rem; color: var(--text-dim); margin-bottom: 2.2rem;
}

/* Social icons */
.social-links { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.social-link {
    display: flex; align-items: center; justify-content: center;
    width: 2.9rem; height: 2.9rem;
    border: 1px solid var(--border); border-radius: 10px;
    color: var(--text-dim); text-decoration: none;
    background: var(--surface);
    transition: border-color 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.social-link:hover { transform: translateY(-3px); }
.social-link.email:hover   { border-color: #ff7b72; color: #ff7b72; box-shadow: 0 6px 20px rgba(255,123,114,0.18); }
.social-link.github:hover  { border-color: var(--text); color: var(--text); box-shadow: 0 6px 20px rgba(200,200,200,0.12); }
.social-link.discord:hover { border-color: #5865F2; color: #5865F2; box-shadow: 0 6px 20px rgba(88,101,242,0.2); }
.social-link.steam:hover   { border-color: var(--accent-cyan); color: var(--accent-cyan); box-shadow: 0 6px 20px rgba(57,213,213,0.18); }
.social-link.linkedin:hover{ border-color: #0a66c2; color: #0a66c2; box-shadow: 0 6px 20px rgba(10,102,194,0.2); }
.social-link.terminal-btn { cursor: pointer; font: inherit; animation: termPulse 2.5s ease-in-out infinite; }
.social-link.terminal-btn:hover { border-color: var(--accent-green); color: var(--accent-green); box-shadow: 0 6px 20px rgba(63,185,80,0.18); animation: none; }
@keyframes termPulse {
    0%   { border-color: #58a6ff; box-shadow: 0 0 10px rgba(88,166,255,0.5),  0 0 20px rgba(88,166,255,0.2); color: #58a6ff; }
    20%  { border-color: #bc8cff; box-shadow: 0 0 10px rgba(188,140,255,0.5), 0 0 20px rgba(188,140,255,0.2); color: #bc8cff; }
    40%  { border-color: #3fb950; box-shadow: 0 0 10px rgba(63,185,80,0.5),   0 0 20px rgba(63,185,80,0.2);  color: #3fb950; }
    60%  { border-color: #39d5d5; box-shadow: 0 0 10px rgba(57,213,213,0.5),  0 0 20px rgba(57,213,213,0.2); color: #39d5d5; }
    80%  { border-color: #ff7b72; box-shadow: 0 0 10px rgba(255,123,114,0.5), 0 0 20px rgba(255,123,114,0.2); color: #ff7b72; }
    100% { border-color: #58a6ff; box-shadow: 0 0 10px rgba(88,166,255,0.5),  0 0 20px rgba(88,166,255,0.2); color: #58a6ff; }
}

/* Sections */
section { padding: 3.5rem 0; border-top: 1px solid var(--border); }
.section-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem; color: var(--accent);
    letter-spacing: 0.18em; text-transform: uppercase;
    margin-bottom: 1.8rem; opacity: 0.7;
}

/* Bio */
.bio { font-size: 1.05rem; color: var(--text); line-height: 1.85; margin-bottom: 1.8rem; }
.bio strong { color: var(--accent-cyan); font-weight: 500; }

/* Chips */
.chips { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.chip {
    font-family: 'JetBrains Mono', monospace; font-size: 0.78rem;
    padding: 0.3rem 0.8rem; border-radius: 99px;
    border: 1px solid var(--border); color: var(--text-dim);
    background: var(--surface);
    transition: border-color 0.2s, color 0.2s, box-shadow 0.2s, transform 0.15s;
    cursor: default; user-select: none;
}
.chip:hover { transform: translateY(-2px); }
.chip.blue:hover   { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 14px rgba(88,166,255,0.22); }
.chip.purple:hover { border-color: var(--accent-purple); color: var(--accent-purple); box-shadow: 0 0 14px rgba(188,140,255,0.22); }
.chip.green:hover  { border-color: var(--accent-green); color: var(--accent-green); box-shadow: 0 0 14px rgba(63,185,80,0.22); }
.chip.cyan:hover   { border-color: var(--accent-cyan); color: var(--accent-cyan); box-shadow: 0 0 14px rgba(57,213,213,0.22); }

/* Timeline */
.timeline { display: flex; flex-direction: column; gap: 1.2rem; }
.timeline-item {
    display: grid; grid-template-columns: 100px 1fr;
    gap: 1.5rem; padding: 1.4rem 1.5rem;
    border: 1px solid var(--border); border-radius: 14px;
    background: var(--surface); position: relative; overflow: hidden;
    transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s, opacity 0.5s;
}
.timeline-item::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(88,166,255,0.04), transparent 60%);
    opacity: 0; transition: opacity 0.2s; pointer-events: none;
}
.timeline-item:hover { border-color: rgba(88,166,255,0.28); transform: translateY(-2px); box-shadow: 0 10px 36px rgba(0,0,0,0.35); }
.timeline-item:hover::after { opacity: 1; }

/* Alternating slide-in */
.slide-left  { opacity: 0; transform: translateX(-40px); transition: opacity 0.7s ease, transform 0.7s ease; }
.slide-right { opacity: 0; transform: translateX(40px);  transition: opacity 0.7s ease, transform 0.7s ease; }
.slide-left.visible, .slide-right.visible { opacity: 1; transform: translateX(0); }
.timeline-item:nth-child(2).slide-left  { transition-delay: 0.15s; }
.timeline-item:nth-child(2).slide-right { transition-delay: 0.15s; }
.project-card.slide-left  { transform: translateX(-55px); transition: opacity 0.9s ease, transform 0.9s ease; }
.project-card.slide-right { transform: translateX( 55px); transition: opacity 0.9s ease, transform 0.9s ease; }
.project-card.slide-left.visible, .project-card.slide-right.visible { transform: translateX(0); }

.timeline-date {
    font-family: 'JetBrains Mono', monospace; font-size: 0.78rem;
    color: var(--text-dim); line-height: 1.5;
    padding-top: 0.15rem; white-space: nowrap;
}
.timeline-title { font-size: 1.05rem; font-weight: 500; color: #fff; margin-bottom: 0.2rem; }
.timeline-org { font-size: 0.9rem; color: var(--accent); margin-bottom: 0.5rem; }
.timeline-desc { font-size: 0.9rem; color: var(--text-dim); line-height: 1.65; }
.timeline-desc em { color: var(--accent-purple); font-style: normal; }
.timeline-chips { margin-top: 0.8rem; display: flex; flex-wrap: wrap; gap: 0.35rem; }

/* Projects */
.project-grid { display: flex; flex-direction: column; gap: 1.2rem; }
.project-card {
    padding: 1.4rem 1.5rem;
    border: 1px solid var(--border); border-radius: 14px;
    background: var(--surface); position: relative; overflow: hidden;
    transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.project-card::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(135deg, rgba(63,185,80,0.04), transparent 60%);
    opacity: 0; transition: opacity 0.2s; pointer-events: none;
}
.project-card:hover { border-color: rgba(63,185,80,0.28); transform: translateY(-2px); box-shadow: 0 10px 36px rgba(0,0,0,0.35); }
.project-card:hover::after { opacity: 1; }
.project-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.5rem; }
.project-title { font-size: 1.05rem; font-weight: 500; color: #fff; }
.project-link { color: var(--text-dim); transition: color 0.2s; }
.project-link:hover { color: var(--accent-green); }
.project-desc { font-size: 0.9rem; color: var(--text-dim); line-height: 1.65; }

/* Thesis button */
.thesis-btn {
    display: inline-flex; align-items: center; gap: 0.4rem;
    margin-top: 0.9rem;
    background: none; border: 1px solid var(--border);
    color: var(--text-dim); font-family: 'JetBrains Mono', monospace;
    font-size: 0.78rem; padding: 0.3rem 0.8rem; border-radius: 6px;
    cursor: pointer; text-decoration: none;
    transition: border-color 0.2s, color 0.2s, box-shadow 0.2s;
}
.thesis-btn:hover {
    border-color: var(--accent-purple); color: var(--accent-purple);
    box-shadow: 0 0 12px rgba(188,140,255,0.2);
}

/* Footer */
footer {
    padding: 2rem 0 3rem; border-top: 1px solid var(--border);
    font-family: 'JetBrains Mono', monospace; font-size: 0.72rem;
    color: var(--text-dim); display: flex;
    justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: 0.5rem;
}
.term-open-hint {
    cursor: pointer; opacity: 0.5;
    transition: opacity 0.2s, color 0.2s;
}
.term-open-hint:hover { opacity: 1; color: var(--accent); }

/* Fade-in */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.65s ease, transform 0.65s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* Scroll arrow */
.scroll-arrow {
    position: fixed; bottom: 2rem; left: 50%;
    transform: translateX(-50%); color: var(--text-dim);
    z-index: 10; transition: opacity 0.4s ease, color 0.2s;
    animation: bounce 2s ease-in-out infinite; cursor: pointer;
    display: flex; flex-direction: column; align-items: center; gap: 0.25rem;
}
.scroll-arrow:hover { color: var(--accent); }
.scroll-arrow.hidden { opacity: 0; pointer-events: none; }
.scroll-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem; letter-spacing: 0.15em;
    text-transform: uppercase; opacity: 0.9;
}
@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50%       { transform: translateX(-50%) translateY(7px); }
}

/* Konami flash */
@keyframes konamiFlash {
    0%, 100% { opacity: 0.25; }
    50%       { opacity: 0.7; filter: blur(120px) hue-rotate(180deg); }
}
.konami-active { animation: konamiFlash 0.4s ease-in-out 5 !important; }

/* Theme toggle */
#themeToggle {
    position: fixed; top: 1.2rem; right: 1.2rem; z-index: 800;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: 50%; width: 36px; height: 36px;
    cursor: pointer; display: flex; align-items: center; justify-content: center;
    transition: border-color 0.2s, box-shadow 0.2s;
    color: var(--text-dim);
}
#themeToggle:hover { border-color: var(--accent); color: var(--accent); box-shadow: 0 0 10px rgba(var(--canvas-rgb),0.2); }

/* Responsive */
@media (max-width: 560px) {
    .timeline-item { grid-template-columns: 1fr; gap: 0.4rem; }
    .timeline-date { font-size: 0.65rem; }
    footer { justify-content: center; text-align: center; }
    .stats { gap: 1.2rem; }
    #term-input, .term-prompt-label { font-size: 16px; }
}