/* ============================================================
   Marios Georgiades — Portfolio
   Design system: refined cyberpunk / neon. Strong upgrade pass.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@500;700;900&family=Share+Tech+Mono&family=Inter:wght@400;500;600;700&display=swap');

/* ----- Design tokens ----- */
:root {
	--neon-green: #39ff14;
	--neon-pink: #ff2bd6;
	--neon-cyan: #00f0ff;
	--neon-cyan-dim: rgba(0, 240, 255, 0.55);
	--neon-amber: #ffb84d;
	--bg: #050608;
	--bg-elev: #0b0d12;
	--bg-elev-2: #11141b;
	--surface: rgba(13, 17, 23, 0.78);
	--surface-strong: rgba(13, 17, 23, 0.94);
	--border: rgba(0, 240, 255, 0.18);
	--border-strong: rgba(0, 240, 255, 0.45);
	--text: #e7eaf0;
	--text-dim: #9aa4b2;
	--text-mute: #6b7585;
	--grid-color: rgba(0, 240, 255, 0.05);

	--font-display: 'Orbitron', system-ui, sans-serif;
	--font-mono: 'Share Tech Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
	--font-body: 'Inter', system-ui, -apple-system, Segoe UI, sans-serif;

	--radius-sm: 6px;
	--radius: 12px;
	--radius-lg: 18px;
	--shadow-glow: 0 0 24px rgba(0, 240, 255, 0.18);
	--shadow-pink: 0 0 18px rgba(255, 43, 214, 0.25);
	--shadow-deep: 0 18px 50px rgba(0, 0, 0, 0.55);

	--maxw: 1200px;
	--ease: cubic-bezier(0.2, 0.7, 0.2, 1);
	--header-h: 68px;
}

/* ----- Reset (modern, minimal) ----- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
html, body { height: 100%; }
body {
	background: var(--bg);
	color: var(--text);
	font-family: var(--font-body);
	font-size: 16px;
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
	overflow-x: hidden;
	background-image:
		radial-gradient(circle at 12% 18%, rgba(0, 240, 255, 0.08), transparent 40%),
		radial-gradient(circle at 88% 12%, rgba(255, 43, 214, 0.07), transparent 45%),
		radial-gradient(circle at 50% 90%, rgba(57, 255, 20, 0.05), transparent 50%),
		linear-gradient(var(--grid-color) 1px, transparent 1px),
		linear-gradient(90deg, var(--grid-color) 1px, transparent 1px),
		var(--bg);
	background-size: auto, auto, auto, 44px 44px, 44px 44px, auto;
	background-attachment: fixed;
}
img, svg { max-width: 100%; display: block; }
ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; transition: color 200ms var(--ease); }
button { font: inherit; color: inherit; background: transparent; border: 0; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }
:focus-visible {
	outline: 2px solid var(--neon-cyan);
	outline-offset: 3px;
	border-radius: 2px;
}
::selection { background: var(--neon-cyan); color: #001018; }

/* Skip link */
.skip-link {
	position: absolute; top: -100px; left: 16px;
	background: var(--neon-cyan); color: #001018;
	padding: 8px 14px; border-radius: 6px;
	font-weight: 700; z-index: 9999;
	transition: top 180ms var(--ease);
}
.skip-link:focus { top: 12px; }

/* Subtle CRT scanline overlay (toned down vs original) */
body::before {
	content: "";
	position: fixed; inset: 0;
	pointer-events: none;
	background:
		repeating-linear-gradient(
			to bottom,
			rgba(255, 255, 255, 0.012) 0px,
			rgba(255, 255, 255, 0.012) 1px,
			transparent 1px,
			transparent 3px
		);
	z-index: 9998;
	mix-blend-mode: overlay;
}

/* Background canvas */
#bg-canvas {
	position: fixed; inset: 0;
	width: 100%; height: 100%;
	z-index: -1;
	opacity: 0.55;
	pointer-events: none;
}
body.no-fx #bg-canvas { display: none; }
body.no-fx::before { display: none; }

/* ----- Typography ----- */
h1, h2, h3, h4, h5, h6 {
	font-family: var(--font-display);
	color: var(--text);
	letter-spacing: 0.02em;
	line-height: 1.15;
	font-weight: 700;
}
h1 { font-size: clamp(2.4rem, 6vw, 4.5rem); font-weight: 900; letter-spacing: 0.04em; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.4rem); }
h3 { font-size: clamp(1.05rem, 1.6vw, 1.25rem); letter-spacing: 0.06em; text-transform: uppercase; }
p  { color: var(--text-dim); }

.eyebrow {
	display: inline-block;
	font-family: var(--font-mono);
	font-size: 0.78rem;
	letter-spacing: 0.3em;
	text-transform: uppercase;
	color: var(--neon-cyan);
	margin-bottom: 0.6rem;
	padding: 0.18rem 0.55rem;
	border: 1px solid var(--border);
	border-radius: 999px;
	background: rgba(0, 240, 255, 0.06);
}

.section { max-width: var(--maxw); margin: 0 auto; padding: 6rem 1.5rem; scroll-margin-top: var(--header-h); }
.section-header { margin-bottom: 2.5rem; }
.section-header.center { text-align: center; }
.section-header h2 { color: var(--text); }
.section-header h2::after {
	content: "";
	display: block;
	width: 56px; height: 2px;
	margin-top: 0.9rem;
	background: linear-gradient(90deg, var(--neon-cyan), var(--neon-pink));
	box-shadow: 0 0 12px rgba(0, 240, 255, 0.6);
	border-radius: 2px;
}
.section-header.center h2::after { margin-left: auto; margin-right: auto; }
.section-sub { max-width: 60ch; margin-top: 0.6rem; color: var(--text-dim); }
.subsection-title {
	margin: 3rem 0 1.25rem 0;
	font-size: 0.95rem; letter-spacing: 0.25em;
	color: var(--text-mute);
	font-family: var(--font-mono);
	text-transform: uppercase;
}

/* ----- Buttons ----- */
.btn {
	display: inline-flex; align-items: center; gap: 0.6rem;
	padding: 0.78rem 1.4rem;
	font-family: var(--font-display);
	font-size: 0.85rem;
	font-weight: 700;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	border-radius: var(--radius-sm);
	border: 1px solid var(--border-strong);
	transition: transform 200ms var(--ease), box-shadow 200ms var(--ease), background 200ms var(--ease), color 200ms var(--ease);
	white-space: nowrap;
	will-change: transform;
}
.btn i { font-size: 0.95em; }
.btn:hover { transform: translateY(-2px); }
.btn-primary {
	background: linear-gradient(135deg, rgba(0, 240, 255, 0.18), rgba(255, 43, 214, 0.18));
	color: #ffffff;
	border-color: var(--neon-cyan);
	box-shadow: 0 0 0 1px rgba(0, 240, 255, 0.3) inset, 0 8px 22px rgba(0, 240, 255, 0.18);
}
.btn-primary:hover {
	background: linear-gradient(135deg, var(--neon-cyan), var(--neon-pink));
	color: #001018;
	box-shadow: 0 12px 32px rgba(0, 240, 255, 0.35);
}
.btn-ghost {
	background: rgba(255, 255, 255, 0.02);
	color: var(--text);
	border-color: var(--border);
}
.btn-ghost:hover {
	border-color: var(--neon-cyan);
	color: var(--neon-cyan);
	background: rgba(0, 240, 255, 0.06);
}
.btn-sm { padding: 0.45rem 0.85rem; font-size: 0.72rem; letter-spacing: 0.14em; }

/* ----- Top nav ----- */
#topnav {
	position: fixed; top: 0; left: 0; right: 0;
	height: var(--header-h);
	display: flex; align-items: center; justify-content: space-between;
	padding: 0 1.5rem;
	z-index: 1000;
	background: rgba(5, 6, 8, 0.55);
	backdrop-filter: blur(14px) saturate(140%);
	-webkit-backdrop-filter: blur(14px) saturate(140%);
	border-bottom: 1px solid transparent;
	transition: border-color 220ms var(--ease), background 220ms var(--ease);
}
#topnav.scrolled {
	background: rgba(5, 6, 8, 0.85);
	border-bottom-color: var(--border);
}
.nav-brand {
	font-family: var(--font-display);
	font-weight: 900;
	letter-spacing: 0.18em;
	color: var(--text);
	font-size: 1.05rem;
}
.brand-bracket { color: var(--neon-cyan); }
#nav-list {
	display: flex; align-items: center; gap: 1.6rem;
}
#nav-list a {
	font-family: var(--font-mono);
	font-size: 0.86rem;
	letter-spacing: 0.12em;
	color: var(--text-dim);
	text-transform: uppercase;
	position: relative;
	padding: 0.4rem 0;
}
#nav-list a:hover, #nav-list a.is-active { color: var(--neon-cyan); }
#nav-list a::after {
	content: "";
	position: absolute; left: 0; right: 0; bottom: -2px;
	height: 1px;
	background: var(--neon-cyan);
	transform: scaleX(0); transform-origin: left;
	transition: transform 220ms var(--ease);
}
#nav-list a:hover::after, #nav-list a.is-active::after { transform: scaleX(1); }
#nav-list a.nav-cta {
	color: var(--text);
	border: 1px solid var(--border-strong);
	border-radius: 999px;
	padding: 0.4rem 0.9rem;
}
#nav-list a.nav-cta:hover {
	background: var(--neon-cyan); color: #001018; border-color: var(--neon-cyan);
}
#nav-list a.nav-cta::after { display: none; }

.nav-toggle {
	display: none;
	width: 42px; height: 42px;
	padding: 9px;
	border: 1px solid var(--border);
	border-radius: 8px;
}
.nav-toggle span {
	display: block; height: 2px; width: 100%;
	background: var(--text);
	margin: 4px 0;
	transition: transform 200ms var(--ease), opacity 200ms var(--ease);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 820px) {
	.nav-toggle { display: block; }
	#nav-list {
		position: absolute; top: var(--header-h); left: 0; right: 0;
		flex-direction: column; gap: 0;
		background: rgba(5, 6, 8, 0.97);
		border-bottom: 1px solid var(--border);
		padding: 0.5rem 1.5rem 1.25rem 1.5rem;
		max-height: 0; overflow: hidden;
		transition: max-height 280ms var(--ease);
	}
	#nav-list.open { max-height: 480px; }
	#nav-list li { width: 100%; }
	#nav-list a { display: block; padding: 0.9rem 0; border-bottom: 1px solid rgba(255,255,255,0.04); }
}

/* ----- Hero ----- */
.hero {
	min-height: calc(100vh - var(--header-h));
	display: flex; align-items: center; justify-content: center;
	padding: calc(var(--header-h) + 3rem) 1.5rem 4rem;
	position: relative;
	overflow: hidden;
}
.hero::before {
	content: "";
	position: absolute; inset: -20% -10% auto auto;
	width: 60vw; height: 60vw;
	background: radial-gradient(circle, rgba(255, 43, 214, 0.12), transparent 60%);
	z-index: 0;
	pointer-events: none;
}
.hero::after {
	content: "";
	position: absolute; inset: auto auto -20% -10%;
	width: 60vw; height: 60vw;
	background: radial-gradient(circle, rgba(0, 240, 255, 0.10), transparent 60%);
	z-index: 0;
	pointer-events: none;
}
.hero-inner { max-width: 920px; width: 100%; text-align: center; position: relative; z-index: 1; }
.hero-tag {
	display: inline-flex; align-items: center; gap: 0.55rem;
	padding: 0.35rem 0.95rem;
	border: 1px solid var(--border);
	background: rgba(0, 240, 255, 0.05);
	border-radius: 999px;
	font-family: var(--font-mono);
	font-size: 0.78rem;
	letter-spacing: 0.12em;
	color: var(--text-dim);
	margin-bottom: 1.4rem;
}
.status-dot {
	width: 8px; height: 8px; border-radius: 50%;
	background: var(--neon-green);
	box-shadow: 0 0 0 0 rgba(57, 255, 20, 0.6);
	animation: pulse 2s infinite;
}
@keyframes pulse {
	0%   { box-shadow: 0 0 0 0 rgba(57, 255, 20, 0.6); }
	70%  { box-shadow: 0 0 0 12px rgba(57, 255, 20, 0); }
	100% { box-shadow: 0 0 0 0 rgba(57, 255, 20, 0); }
}

.hero-name {
	background: linear-gradient(120deg, #ffffff 0%, var(--neon-cyan) 45%, var(--neon-pink) 100%);
	-webkit-background-clip: text; background-clip: text;
	color: transparent;
	margin-bottom: 1rem;
	text-shadow: 0 0 36px rgba(0, 240, 255, 0.12);
}

.hero-role {
	font-family: var(--font-mono);
	color: var(--neon-green);
	font-size: clamp(1rem, 1.6vw, 1.25rem);
	margin-bottom: 1.4rem;
	min-height: 1.6em;
}
.hero-role-prefix { color: var(--neon-cyan); margin-right: 0.25rem; }
.caret {
	display: inline-block;
	margin-left: 2px;
	color: var(--neon-green);
	animation: blink 1s steps(2) infinite;
}

.hero-tagline {
	max-width: 64ch; margin: 0 auto 2rem;
	color: var(--text-dim);
	font-size: clamp(0.95rem, 1.25vw, 1.1rem);
}

.hero-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.8rem; margin-bottom: 3rem; }

.hero-stats {
	display: grid;
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: 1rem;
	max-width: 760px; margin: 0 auto;
}
.stat {
	padding: 1rem 0.75rem;
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	text-align: center;
	transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}
.stat:hover { transform: translateY(-3px); border-color: var(--border-strong); }
.stat-num {
	display: block;
	font-family: var(--font-display);
	font-weight: 900;
	font-size: clamp(1.1rem, 2vw, 1.7rem);
	letter-spacing: 0.01em;
	white-space: nowrap;
	background: linear-gradient(120deg, var(--neon-cyan), var(--neon-pink));
	-webkit-background-clip: text; background-clip: text;
	color: transparent;
}
.stat-label {
	display: block;
	margin-top: 0.3rem;
	font-family: var(--font-mono);
	font-size: 0.72rem;
	letter-spacing: 0.12em;
	color: var(--text-mute);
	text-transform: uppercase;
}
@media (max-width: 640px) {
	.hero-stats { grid-template-columns: repeat(2, 1fr); }
}

.scroll-cue {
	position: absolute;
	bottom: 1.8rem; left: 50%; transform: translateX(-50%);
	width: 22px; height: 36px;
	border: 1px solid var(--border-strong);
	border-radius: 12px;
	display: flex; justify-content: center; padding-top: 6px;
}
.scroll-cue span {
	width: 3px; height: 8px;
	background: var(--neon-cyan);
	border-radius: 2px;
	animation: scroll-bob 1.6s var(--ease) infinite;
}
@keyframes scroll-bob {
	0%   { transform: translateY(0); opacity: 1; }
	60%  { transform: translateY(10px); opacity: 0; }
	100% { transform: translateY(0); opacity: 0; }
}

/* ----- About ----- */
.about-grid {
	display: grid;
	grid-template-columns: 1.4fr 1fr;
	gap: 2.5rem;
	align-items: start;
}
.about-copy p { margin-bottom: 1rem; font-size: 1.02rem; }
.about-copy strong { color: var(--text); }

.about-card {
	position: relative;
	background: var(--surface-strong);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 1.4rem 1.4rem 1.2rem;
	box-shadow: var(--shadow-deep);
}
.about-card::before {
	content: "profile.json";
	position: absolute; top: 0; left: 1rem; transform: translateY(-50%);
	font-family: var(--font-mono);
	font-size: 0.72rem; letter-spacing: 0.16em;
	background: var(--neon-cyan); color: #001018;
	padding: 0.18rem 0.6rem;
	border-radius: 4px;
}
.code-stats {
	font-family: var(--font-mono);
	font-size: 0.88rem;
	color: var(--text);
	overflow-x: auto;
	white-space: pre;
}
.code-stats .key    { color: var(--neon-pink); }
.code-stats .string { color: var(--neon-green); }

@media (max-width: 820px) {
	.about-grid { grid-template-columns: 1fr; }
}

/* ----- Skills ----- */
.skills-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
	gap: 1.25rem;
}
.skill-cluster {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 1.4rem;
	transition: border-color 220ms var(--ease), transform 220ms var(--ease);
}
.skill-cluster:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.skill-cluster header { display: flex; align-items: center; gap: 0.7rem; margin-bottom: 1rem; }
.skill-cluster header i { color: var(--neon-cyan); font-size: 1.1rem; }
.skill-cluster h3 { color: var(--text); font-size: 0.95rem; }

.chips { display: flex; flex-wrap: wrap; gap: 0.45rem; }
.chips li {
	font-family: var(--font-mono);
	font-size: 0.78rem;
	letter-spacing: 0.04em;
	padding: 0.32rem 0.7rem;
	background: rgba(0, 240, 255, 0.05);
	color: var(--text);
	border: 1px solid var(--border);
	border-radius: 999px;
}
.chips-sm li { font-size: 0.7rem; padding: 0.22rem 0.55rem; }

/* ----- Projects ----- */
.featured-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
	gap: 1.5rem;
}
.projects-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
	gap: 1.25rem;
}

.project-card {
	position: relative;
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	overflow: hidden;
	transition: transform 240ms var(--ease), border-color 240ms var(--ease), box-shadow 240ms var(--ease);
}
.project-card::before {
	content: "";
	position: absolute; inset: 0;
	background: radial-gradient(180px circle at var(--mx, 50%) var(--my, 0%), rgba(0, 240, 255, 0.10), transparent 60%);
	pointer-events: none; opacity: 0;
	transition: opacity 220ms var(--ease);
}
.project-card:hover {
	transform: translateY(-4px);
	border-color: var(--border-strong);
	box-shadow: var(--shadow-glow);
}
.project-card:hover::before { opacity: 1; }
.project-card-link {
	display: block;
	height: 100%;
	padding: 1.5rem;
	color: inherit;
	position: relative;
	z-index: 1;
}
.project-card-top {
	display: flex; align-items: center; justify-content: space-between;
	margin-bottom: 1rem;
}
.project-icon {
	font-size: 1.8rem;
	color: var(--neon-cyan);
	filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.45));
}
.source-icon { color: var(--text-mute); font-size: 1.2rem; transition: color 200ms var(--ease); }
.project-card:hover .source-icon { color: var(--neon-cyan); }
.featured-badge {
	display: inline-flex; align-items: center; gap: 0.35rem;
	font-family: var(--font-mono);
	font-size: 0.7rem;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	padding: 0.22rem 0.55rem;
	border: 1px solid var(--neon-pink);
	color: var(--neon-pink);
	border-radius: 4px;
	background: rgba(255, 43, 214, 0.06);
}
.project-card h3 {
	color: var(--text);
	margin-bottom: 0.6rem;
	font-size: 1.05rem;
	letter-spacing: 0.04em;
	text-transform: none;
	font-family: var(--font-display);
}
.project-card p { font-size: 0.95rem; margin-bottom: 1rem; }
.card-cta {
	display: inline-flex; align-items: center; gap: 0.4rem;
	margin-top: 0.4rem;
	font-family: var(--font-mono);
	font-size: 0.78rem;
	letter-spacing: 0.14em;
	color: var(--neon-cyan);
	text-transform: uppercase;
	transition: gap 200ms var(--ease);
}
.project-card:hover .card-cta { gap: 0.7rem; }

.project-card--featured { background: linear-gradient(160deg, rgba(0, 240, 255, 0.04), rgba(255, 43, 214, 0.04)), var(--surface); }



/* ----- Multi-action project cards (Live + Case study + Source) ----- */
.project-card--multi {
	display: flex;
	flex-direction: column;
}
.project-card--multi .project-card-body {
	padding: 1.5rem 1.5rem 0.5rem;
	flex: 1;
}
.project-card--multi .project-card-top {
	display: flex; align-items: center; justify-content: space-between;
	margin-bottom: 1rem;
	gap: 0.6rem;
}
.project-card--multi h3 {
	color: var(--text);
	margin-bottom: 0.6rem;
	font-size: 1.05rem;
	letter-spacing: 0.04em;
	font-family: var(--font-display);
}
.project-card--multi h3 .card-title-link {
	color: var(--text);
	background: linear-gradient(120deg, currentColor, currentColor) bottom / 0% 1px no-repeat;
	transition: background-size 220ms var(--ease), color 220ms var(--ease);
}
.project-card--multi h3 .card-title-link:hover {
	color: var(--neon-cyan);
	background-size: 100% 1px;
}
.project-card--multi p { font-size: 0.95rem; margin-bottom: 1rem; color: var(--text-dim); }

.project-card-actions {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
	padding: 1rem 1.5rem 1.4rem;
	border-top: 1px dashed var(--border);
	margin-top: auto;
}
.action-link {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	padding: 0.4rem 0.7rem;
	font-family: var(--font-mono);
	font-size: 0.78rem;
	letter-spacing: 0.06em;
	color: var(--text);
	border: 1px solid var(--border);
	border-radius: 999px;
	background: rgba(255, 255, 255, 0.02);
	transition: color 200ms var(--ease), border-color 200ms var(--ease), background 200ms var(--ease), transform 200ms var(--ease);
}
.action-link i { font-size: 0.78rem; }
.action-link:hover {
	color: var(--neon-cyan);
	border-color: var(--neon-cyan);
	background: rgba(0, 240, 255, 0.06);
	transform: translateY(-1px);
}
.action-link.action-primary {
	color: #001018;
	background: linear-gradient(120deg, var(--neon-cyan), var(--neon-pink));
	border-color: transparent;
	font-weight: 700;
}
.action-link.action-primary:hover {
	color: #001018;
	transform: translateY(-2px);
	box-shadow: 0 8px 22px rgba(0, 240, 255, 0.25);
}
.action-link.action-muted {
	color: var(--text-mute);
}
.action-link.action-muted:hover {
	color: var(--text);
	border-color: var(--border-strong);
}

/* Live badge with pulsing dot */
.live-badge {
	display: inline-flex; align-items: center; gap: 0.4rem;
	font-family: var(--font-mono);
	font-size: 0.7rem;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	padding: 0.22rem 0.55rem;
	border: 1px solid var(--neon-green);
	color: var(--neon-green);
	border-radius: 4px;
	background: rgba(57, 255, 20, 0.06);
}
.live-dot {
	width: 7px; height: 7px;
	border-radius: 50%;
	background: var(--neon-green);
	box-shadow: 0 0 0 0 rgba(57, 255, 20, 0.7);
	animation: pulse 2s infinite;
}

/* ----- Endurance ----- */
.section-endurance {
	background:
		radial-gradient(circle at 80% 0%, rgba(255, 184, 77, 0.08), transparent 55%),
		radial-gradient(circle at 0% 100%, rgba(255, 43, 214, 0.06), transparent 60%);
	border-top: 1px solid var(--border);
	border-bottom: 1px solid var(--border);
	max-width: none;
	padding-left: 1.5rem; padding-right: 1.5rem;
}
.section-endurance > * { max-width: var(--maxw); margin-left: auto; margin-right: auto; }
.endurance-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
	gap: 1.25rem;
}
.endurance-card {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 1.5rem;
	transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}
.endurance-card:hover { transform: translateY(-3px); border-color: var(--neon-amber); }
.endurance-icon {
	width: 46px; height: 46px;
	display: grid; place-items: center;
	border-radius: 10px;
	margin-bottom: 1rem;
	background: rgba(255, 184, 77, 0.08);
	border: 1px solid rgba(255, 184, 77, 0.35);
	color: var(--neon-amber);
	font-size: 1.2rem;
}
.endurance-card h3 { color: var(--text); margin-bottom: 0.45rem; font-size: 1rem; }
.endurance-quote {
	margin-top: 2.5rem;
	padding: 1.5rem 1.75rem;
	border-left: 3px solid var(--neon-amber);
	font-family: var(--font-mono);
	font-size: 1rem;
	color: var(--text);
	background: rgba(255, 184, 77, 0.04);
	border-radius: 0 var(--radius) var(--radius) 0;
	max-width: 760px;
}

/* ----- Certifications ----- */
.cert-card {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 1.75rem;
	transition: transform 220ms var(--ease), border-color 220ms var(--ease);
}
.cert-card:hover { transform: translateY(-3px); border-color: var(--border-strong); }
.cert-card--featured { margin-bottom: 1.5rem; }
.cert-meta { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.25rem; }
.cert-icon {
	width: 48px; height: 48px;
	flex-shrink: 0;
	display: grid; place-items: center;
	border-radius: 10px;
	background: rgba(0, 240, 255, 0.08);
	border: 1px solid var(--border-strong);
	color: var(--neon-cyan);
	font-size: 1.3rem;
}
.cert-issuer-badge {
	display: grid; place-items: center;
	width: 64px; height: 48px;
	flex-shrink: 0;
	border-radius: 8px;
	background: #ffffff;
	color: #20BEFF;
	font-family: var(--font-body);
	font-weight: 800;
	font-size: 1.05rem;
	letter-spacing: -0.02em;
	box-shadow: 0 0 0 1px rgba(32, 190, 255, 0.5), 0 0 18px rgba(32, 190, 255, 0.2);
}
.cert-meta h3 { color: var(--text); margin-bottom: 0.2rem; font-size: 1rem; line-height: 1.25; }
.cert-sub { color: var(--text-dim); font-size: 0.88rem; }
.cert-blurb { color: var(--text-dim); font-size: 0.95rem; margin-bottom: 1rem; }
.cert-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
	gap: 1.25rem;
}
.cert-card--kaggle {
	background: linear-gradient(160deg, rgba(32, 190, 255, 0.06), rgba(32, 190, 255, 0.01)), var(--surface);
	border-color: rgba(32, 190, 255, 0.25);
}
.cert-card--kaggle:hover { border-color: rgba(32, 190, 255, 0.65); }
.certificate-image {
	width: 100%;
	max-width: 720px;
	margin: 0 auto;
	border: 1px solid var(--border);
	border-radius: var(--radius-sm);
}
.cert-topology { margin-top: 1.25rem; }
.cert-topology summary {
	cursor: pointer;
	font-family: var(--font-mono);
	font-size: 0.85rem;
	color: var(--neon-cyan);
	letter-spacing: 0.1em;
	text-transform: uppercase;
	padding: 0.6rem 0;
}
.network-topology {
	background: #000;
	border: 1px solid var(--border);
	border-radius: var(--radius-sm);
	color: var(--neon-green);
	padding: 1.2rem;
	margin-top: 0.5rem;
	font-family: var(--font-mono);
	font-size: 0.85rem;
	overflow-x: auto;
	white-space: pre;
}

/* ----- Contact ----- */
.section-contact { text-align: center; padding-bottom: 7rem; }
.contact-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.8rem; margin: 2rem 0 1.5rem; }
.contact-note { color: var(--text-mute); font-family: var(--font-mono); font-size: 0.85rem; }
.contact-note kbd {
	font-family: var(--font-mono);
	font-size: 0.78rem;
	background: rgba(0, 240, 255, 0.06);
	border: 1px solid var(--border);
	padding: 0.1rem 0.4rem;
	border-radius: 4px;
	color: var(--text);
}

/* ----- Footer ----- */
#footer {
	border-top: 1px solid var(--border);
	padding: 3rem 1.5rem 2rem;
	background: rgba(5, 6, 8, 0.6);
}
.footer-inner {
	max-width: var(--maxw);
	margin: 0 auto;
	display: flex; flex-wrap: wrap; gap: 1.25rem; align-items: center; justify-content: space-between;
}
.footer-brand { display: flex; align-items: center; gap: 0.7rem; font-family: var(--font-mono); font-size: 0.9rem; color: var(--text-dim); }
#footer .icons { display: flex; gap: 1rem; }
#footer .icons a {
	width: 42px; height: 42px;
	display: grid; place-items: center;
	border: 1px solid var(--border);
	border-radius: 10px;
	color: var(--text);
	font-size: 1.05rem;
	transition: color 200ms var(--ease), border-color 200ms var(--ease), transform 200ms var(--ease), background 200ms var(--ease);
}
#footer .icons a:hover {
	color: var(--neon-cyan);
	border-color: var(--neon-cyan);
	background: rgba(0, 240, 255, 0.06);
	transform: translateY(-2px);
}
#footer .icons .label { position: absolute; left: -9999px; }
.footer-controls { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.footer-meta {
	max-width: var(--maxw); margin: 1.5rem auto 0;
	color: var(--text-mute); font-family: var(--font-mono); font-size: 0.8rem; text-align: center;
}

/* ----- Konami terminal ----- */
#hidden-terminal {
	position: fixed; inset: 0;
	background: rgba(0, 0, 0, 0.92);
	z-index: 10000;
	display: flex; align-items: center; justify-content: center;
	opacity: 0; visibility: hidden;
	transition: opacity 240ms var(--ease), visibility 240ms var(--ease);
}
#hidden-terminal:not(.hidden) { opacity: 1; visibility: visible; }
.terminal-window {
	width: min(90%, 760px); height: min(70vh, 480px);
	background: #000;
	border: 1px solid var(--neon-green);
	box-shadow: 0 0 30px rgba(57, 255, 20, 0.35);
	border-radius: 8px;
	display: flex; flex-direction: column;
	font-family: var(--font-mono);
	overflow: hidden;
}
.terminal-header {
	background: linear-gradient(90deg, rgba(57,255,20,0.15), rgba(57,255,20,0.05));
	border-bottom: 1px solid var(--neon-green);
	color: var(--neon-green);
	padding: 0.5rem 0.75rem;
	display: flex; align-items: center;
}
.terminal-buttons { display: flex; gap: 0.4rem; margin-right: 0.8rem; }
.terminal-close, .terminal-min, .terminal-max {
	width: 12px; height: 12px; border-radius: 50%; cursor: pointer;
}
.terminal-close { background: #ff5f56; }
.terminal-min   { background: #ffbd2e; }
.terminal-max   { background: #27c93f; }
.terminal-title { margin: 0 auto; letter-spacing: 0.08em; }
.terminal-body {
	color: var(--neon-green);
	padding: 1.2rem;
	overflow-y: auto;
	flex: 1;
	font-size: 0.88rem;
	text-shadow: 0 0 4px rgba(57,255,20,0.5);
}
.terminal-body p { color: var(--neon-green); margin-bottom: 0.4rem; }
.terminal-cursor, .terminal-input-line .cursor {
	display: inline-block; width: 8px; height: 1em;
	background: var(--neon-green);
	vertical-align: text-bottom;
	animation: blink 1s steps(2) infinite;
}
.terminal-highlight { color: #fff; }

/* ----- AI Chat Widget ----- */
#ai-widget {
	position: fixed; bottom: 1.6rem; right: 1.6rem;
	z-index: 9990;
	font-family: var(--font-mono);
}
#ai-toggle {
	width: 56px; height: 56px;
	border-radius: 50%;
	background: linear-gradient(140deg, rgba(0, 240, 255, 0.15), rgba(255, 43, 214, 0.15)), #000;
	border: 1px solid var(--neon-cyan);
	color: var(--neon-cyan);
	font-size: 1.35rem;
	box-shadow: 0 8px 24px rgba(0, 240, 255, 0.25);
	transition: transform 220ms var(--ease), box-shadow 220ms var(--ease);
}
#ai-toggle:hover {
	transform: scale(1.06);
	box-shadow: 0 12px 28px rgba(0, 240, 255, 0.45);
}
#ai-chat-window {
	position: absolute; bottom: 72px; right: 0;
	width: 340px; height: 480px;
	background: rgba(8, 10, 14, 0.96);
	border: 1px solid var(--border-strong);
	border-radius: var(--radius);
	display: flex; flex-direction: column; overflow: hidden;
	box-shadow: var(--shadow-deep);
	transition: opacity 220ms var(--ease), transform 220ms var(--ease), visibility 220ms;
}
#ai-chat-window.hidden { opacity: 0; transform: translateY(12px); visibility: hidden; pointer-events: none; }
.ai-header {
	display: flex; align-items: center; justify-content: space-between;
	padding: 0.85rem 1rem;
	background: rgba(0, 240, 255, 0.05);
	border-bottom: 1px solid var(--border);
	color: var(--neon-cyan);
	font-weight: bold;
	font-size: 0.92rem;
	letter-spacing: 0.06em;
}
#ai-close { color: var(--text-dim); font-size: 1rem; }
#ai-close:hover { color: var(--neon-pink); }
#ai-messages {
	flex: 1; padding: 1rem;
	display: flex; flex-direction: column; gap: 0.7rem;
	overflow-y: auto;
}
.message { max-width: 85%; padding: 0.7rem 0.85rem; border-radius: 10px; font-size: 0.88rem; line-height: 1.45; }
.message.system { align-self: flex-start; background: rgba(0, 240, 255, 0.06); border: 1px solid var(--border); color: var(--text); border-top-left-radius: 2px; }
.message.user   { align-self: flex-end;   background: rgba(255, 43, 214, 0.08); border: 1px solid rgba(255, 43, 214, 0.45); color: var(--text); border-bottom-right-radius: 2px; }
.ai-input-area {
	display: flex; gap: 0.5rem;
	padding: 0.75rem;
	border-top: 1px solid var(--border);
	background: rgba(0, 0, 0, 0.4);
}
#ai-input {
	flex: 1;
	background: rgba(0, 0, 0, 0.5);
	border: 1px solid var(--border);
	color: var(--text);
	padding: 0.55rem 0.7rem;
	border-radius: 6px;
}
#ai-input:focus { outline: none; border-color: var(--neon-cyan); }
#ai-send {
	background: rgba(0, 240, 255, 0.1);
	border: 1px solid var(--border-strong);
	color: var(--neon-cyan);
	padding: 0 0.85rem;
	border-radius: 6px;
	transition: background 200ms var(--ease), color 200ms var(--ease);
}
#ai-send:hover { background: var(--neon-cyan); color: #001018; }

.typing-indicator { display: inline-flex; gap: 4px; padding: 0.4rem 0.6rem; }
.typing-dot { width: 6px; height: 6px; background: var(--neon-cyan); border-radius: 50%; animation: typing 1s infinite ease-in-out; }
.typing-dot:nth-child(2) { animation-delay: 0.15s; }
.typing-dot:nth-child(3) { animation-delay: 0.30s; }

@keyframes typing {
	0%, 100% { transform: translateY(0); opacity: 0.5; }
	50%      { transform: translateY(-4px); opacity: 1; }
}
@keyframes blink { to { opacity: 0; } }

/* ----- Project sub-page styles ----- */
.project-page #main-content { padding-top: calc(var(--header-h) + 2rem); }
.project-hero {
	max-width: var(--maxw);
	margin: 0 auto;
	padding: 1.5rem 1.5rem 1rem;
}
.project-hero h1 {
	font-size: clamp(2rem, 4.4vw, 3rem);
	background: linear-gradient(120deg, #fff, var(--neon-cyan));
	-webkit-background-clip: text; background-clip: text; color: transparent;
}
.project-hero .lead { color: var(--text-dim); margin-top: 0.6rem; max-width: 60ch; }

.project-details {
	max-width: var(--maxw);
	margin: 0 auto;
	padding: 1rem 1.5rem 5rem;
	display: grid;
	gap: 1.5rem;
}
.project-section {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 1.75rem;
}
.project-section h2 {
	font-size: 1.2rem;
	letter-spacing: 0.08em;
	color: var(--neon-cyan);
	margin-bottom: 1rem;
	padding-bottom: 0.5rem;
	border-bottom: 1px solid var(--border);
	text-transform: uppercase;
}
.project-section p { margin-bottom: 0.9rem; }
.project-section p:last-child { margin-bottom: 0; }
.project-section strong { color: var(--text); }
.tech-stack-icons {
	display: flex; flex-wrap: wrap; gap: 1.5rem;
	font-size: 2.2rem;
	color: var(--neon-cyan);
	margin-top: 0.5rem;
}
.tech-stack-icons i { transition: transform 200ms var(--ease), color 200ms var(--ease); cursor: default; }
.tech-stack-icons i:hover { transform: translateY(-3px) scale(1.05); color: var(--neon-pink); }
.mermaid {
	background: rgba(0,0,0,0.4);
	border: 1px solid var(--border);
	border-radius: var(--radius-sm);
	padding: 1rem;
	overflow-x: auto;
}
.actions.special {
	display: flex; flex-wrap: wrap; gap: 0.75rem; padding: 0;
}
.back-link {
	position: fixed;
	top: calc(var(--header-h) + 0.6rem); left: 1rem;
	z-index: 100;
	font-family: var(--font-mono);
	font-size: 0.78rem;
	letter-spacing: 0.14em;
	text-transform: uppercase;
	padding: 0.45rem 0.8rem;
	border: 1px solid var(--border);
	background: rgba(5, 6, 8, 0.85);
	border-radius: 6px;
	color: var(--text);
	transition: color 200ms, border-color 200ms;
}
.back-link:hover { color: var(--neon-cyan); border-color: var(--neon-cyan); }

/* ----- Reveal-on-scroll ----- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 500ms var(--ease), transform 500ms var(--ease); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }





/* ----- Education & availability (inside About) ----- */
.edu-strip {
	margin-top: 3rem;
	display: grid;
	grid-template-columns: 1.3fr 1fr;
	gap: 2rem;
	align-items: start;
}
.edu-strip-header { grid-column: 1 / -1; margin-bottom: 0.5rem; }
.edu-strip-header h3 {
	color: var(--text);
	font-size: 1.05rem;
	letter-spacing: 0.06em;
	margin-bottom: 0.4rem;
}
.edu-strip-header p { font-size: 0.95rem; color: var(--text-dim); }

/* Vertical timeline */
.timeline {
	position: relative;
	padding-left: 1.4rem;
	display: flex; flex-direction: column;
	gap: 1.6rem;
}
.timeline::before {
	content: "";
	position: absolute;
	top: 6px; bottom: 6px; left: 7px;
	width: 1px;
	background: linear-gradient(to bottom, var(--neon-cyan), var(--neon-pink));
	opacity: 0.45;
}
.timeline-item {
	position: relative;
}
.timeline-dot {
	position: absolute;
	left: -1.4rem;
	top: 6px;
	width: 14px; height: 14px;
	border-radius: 50%;
	background: var(--bg);
	border: 2px solid var(--neon-cyan);
	box-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
}
.timeline-item.is-done .timeline-dot {
	background: var(--neon-cyan);
}
.timeline-item.is-current .timeline-dot {
	border-color: var(--neon-pink);
	box-shadow: 0 0 0 0 rgba(255, 43, 214, 0.6);
	animation: pulse-pink 2s infinite;
}
@keyframes pulse-pink {
	0%   { box-shadow: 0 0 0 0 rgba(255, 43, 214, 0.55); }
	70%  { box-shadow: 0 0 0 10px rgba(255, 43, 214, 0); }
	100% { box-shadow: 0 0 0 0 rgba(255, 43, 214, 0); }
}
.timeline-body { padding-left: 0.4rem; }
.timeline-date {
	display: inline-block;
	font-family: var(--font-mono);
	font-size: 0.74rem;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	color: var(--neon-cyan);
	margin-bottom: 0.25rem;
}
.timeline-body h4 {
	color: var(--text);
	font-family: var(--font-display);
	font-size: 1rem;
	letter-spacing: 0.04em;
	margin-bottom: 0.4rem;
	display: inline-flex; align-items: center; gap: 0.55rem;
	flex-wrap: wrap;
}
.timeline-tag {
	display: inline-flex;
	font-family: var(--font-mono);
	font-size: 0.65rem;
	letter-spacing: 0.18em;
	text-transform: uppercase;
	padding: 0.18rem 0.5rem;
	color: var(--neon-pink);
	background: rgba(255, 43, 214, 0.08);
	border: 1px solid var(--neon-pink);
	border-radius: 999px;
}
.timeline-body p { font-size: 0.95rem; color: var(--text-dim); margin: 0; }

/* Open-to card */
.open-to {
	background: linear-gradient(160deg, rgba(57, 255, 20, 0.06), rgba(57, 255, 20, 0.01)), var(--surface);
	border: 1px solid rgba(57, 255, 20, 0.25);
	border-radius: var(--radius);
	padding: 1.4rem;
}
.open-to-head {
	display: flex; align-items: center; gap: 0.6rem;
	margin-bottom: 1rem;
}
.open-to-head .status-dot {
	width: 9px; height: 9px;
}
.open-to h4 {
	color: var(--text);
	font-family: var(--font-display);
	font-size: 0.95rem;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	margin: 0;
}
.open-to .chips li {
	background: rgba(57, 255, 20, 0.05);
	border-color: rgba(57, 255, 20, 0.35);
	color: var(--text);
}
.open-to-note {
	margin-top: 1rem;
	font-size: 0.85rem;
	color: var(--text-mute);
	font-family: var(--font-mono);
}
.open-to-note a { color: var(--neon-green); }
.open-to-note a:hover { color: #fff; text-shadow: 0 0 8px var(--neon-green); }

@media (max-width: 820px) {
	.edu-strip {
		grid-template-columns: 1fr;
		gap: 1.5rem;
	}
}

/* ----- Responsive tweaks ----- */
@media (max-width: 640px) {
	.section { padding: 4rem 1.25rem; }
	.hero { padding-bottom: 3rem; }
	.hero-actions .btn { flex: 1 1 140px; justify-content: center; }
	#ai-widget { right: 1rem; bottom: 1rem; }
	#ai-chat-window { width: calc(100vw - 2rem); right: -0.4rem; height: 65vh; }
	#ai-toggle { width: 52px; height: 52px; }
}

/* ----- Reduced motion ----- */
@media (prefers-reduced-motion: reduce) {
	*, *::before, *::after {
		animation-duration: 0.001ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.001ms !important;
		scroll-behavior: auto !important;
	}
	#bg-canvas { display: none; }
	.scroll-cue { display: none; }
}

/* Print */
@media print {
	#topnav, #ai-widget, #bg-canvas, .scroll-cue, #footer .footer-controls { display: none !important; }
	body { background: #fff; color: #000; }
	.section, .project-card, .skill-cluster, .endurance-card, .cert-card { border-color: #ccc; background: #fff; color: #000; }
}