/* =========================================================
   Diogo Santos — Portfolio
   Modern minimalist theme (2026 refresh)
   ========================================================= */

:root {
	--bg: #0a0c10;
	--bg-alt: #0f1218;
	--surface: #12151c;
	--surface-2: #171b23;
	--border: rgba(255, 255, 255, 0.08);
	--border-strong: rgba(255, 255, 255, 0.16);
	--text: #eef1f6;
	--text-muted: #9aa4b2;
	--text-faint: #626b78;
	--accent: #7c9dff;
	--accent-2: #7cf5d4;
	--accent-soft: rgba(124, 157, 255, 0.12);
	--gradient: linear-gradient(135deg, #7c9dff 0%, #b98cff 50%, #7cf5d4 100%);
	--radius-sm: 10px;
	--radius: 16px;
	--radius-lg: 24px;
	--shadow: 0 20px 60px -20px rgba(0, 0, 0, 0.6);
	--container: 1160px;
	--nav-h: 76px;
	--ease: cubic-bezier(.16,.84,.44,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 12px); }

body {
	margin: 0;
	background: var(--bg);
	color: var(--text);
	font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
	font-size: 16px;
	line-height: 1.65;
	-webkit-font-smoothing: antialiased;
	overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
section { position: relative; }

::selection { background: var(--accent); color: #05070a; }

/* background decoration */
.bg-decor {
	position: fixed;
	inset: 0;
	z-index: -1;
	background:
		radial-gradient(700px 400px at 85% -5%, rgba(124,157,255,0.16), transparent 60%),
		radial-gradient(600px 500px at 5% 15%, rgba(124,245,212,0.08), transparent 55%),
		var(--bg);
}
.bg-decor::after {
	content: '';
	position: absolute;
	inset: 0;
	background-image:
		linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
		linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
	background-size: 48px 48px;
	mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
}

/* Ambient skateboards photo behind the hero — fades + drifts out via JS as you scroll */
.hero-photo-bg {
	position: fixed;
	inset: 0;
	z-index: -1;
	overflow: hidden;
	pointer-events: none;
	will-change: opacity, transform;
}
.hero-photo-bg img {
	position: absolute;
	inset: 0;
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: center center;
	filter: grayscale(0.55) contrast(1.12) brightness(0.78);
	z-index: 1;
}
/* Brand-color duotone wash, blended against the photo's luminance */
.hero-photo-bg::before {
	content: '';
	position: absolute;
	inset: 0;
	background: linear-gradient(135deg, rgba(124,157,255,0.4), rgba(185,140,255,0.28) 45%, rgba(124,245,212,0.22) 100%);
	mix-blend-mode: color;
	z-index: 2;
}
/* Left-to-right dark scrim so hero text stays legible while the photo spans full width */
.hero-photo-bg::after {
	content: '';
	position: absolute;
	inset: 0;
	background: linear-gradient(100deg, rgba(10,12,16,0.86) 0%, rgba(10,12,16,0.56) 32%, rgba(10,12,16,0.24) 58%, rgba(10,12,16,0.06) 82%, rgba(10,12,16,0) 100%);
	z-index: 3;
}
@media (max-width: 980px) {
	.hero-photo-bg { display: none; }
}
@media (prefers-reduced-motion: reduce) {
	.hero-photo-bg { transition: none !important; transform: none !important; }
}

.wrap { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.eyebrow {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	font-size: 12.5px;
	font-weight: 600;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--accent);
	margin-bottom: 14px;
}
.eyebrow::before {
	content: '';
	width: 22px;
	height: 2px;
	background: var(--gradient);
	border-radius: 2px;
}

h1, h2, h3, h4 { font-weight: 600; margin: 0; letter-spacing: -0.01em; }

.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); }
.section-head p { color: var(--text-muted); margin-top: 12px; font-size: 1.02rem; }

.text-gradient {
	background: var(--gradient);
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
}

/* =========================
   Navigation
   ========================= */
.navbar {
	position: fixed;
	top: 0; left: 0; right: 0;
	z-index: 100;
	height: var(--nav-h);
	display: flex;
	align-items: center;
	background: rgba(10, 12, 16, 0.6);
	backdrop-filter: blur(16px) saturate(140%);
	border-bottom: 1px solid transparent;
	transition: border-color .3s var(--ease), background .3s var(--ease);
}
.navbar.scrolled { border-bottom-color: var(--border); background: rgba(10, 12, 16, 0.85); }
.navbar .wrap { display: flex; align-items: center; justify-content: space-between; width: 100%; }

.brand {
	display: flex;
	align-items: center;
	gap: 10px;
	font-weight: 600;
	font-size: 1.05rem;
}
.brand .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--gradient); box-shadow: 0 0 14px rgba(124,157,255,.7); }

.nav-links { display: flex; align-items: center; gap: 4px; }
.nav-links a {
	padding: 10px 16px;
	font-size: 0.92rem;
	font-weight: 500;
	color: var(--text-muted);
	border-radius: 100px;
	transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,0.05); }
.nav-links a.active { color: var(--text); background: var(--surface-2); }

.nav-cta {
	display: flex; align-items: center; gap: 10px;
}
.icon-btn {
	width: 40px; height: 40px;
	display: grid; place-items: center;
	border-radius: 50%;
	border: 1px solid var(--border);
	color: var(--text-muted);
	transition: all .2s var(--ease);
}
.icon-btn:hover { color: var(--text); border-color: var(--border-strong); background: var(--surface-2); transform: translateY(-2px); }

.nav-toggle {
	display: none;
	width: 40px; height: 40px;
	border-radius: 50%;
	border: 1px solid var(--border);
	background: none;
	color: var(--text);
	align-items: center;
	justify-content: center;
	cursor: pointer;
}

/* buttons */
.btn {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	padding: 13px 24px;
	border-radius: 100px;
	font-weight: 600;
	font-size: 0.94rem;
	border: 1px solid transparent;
	cursor: pointer;
	transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s, border-color .25s, color .25s;
	white-space: nowrap;
}
.btn-primary {
	background: var(--gradient);
	color: #06080c;
	box-shadow: 0 12px 30px -10px rgba(124,157,255,0.55);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 16px 36px -8px rgba(124,157,255,0.65); }
.btn-ghost {
	background: transparent;
	border-color: var(--border-strong);
	color: var(--text);
}
.btn-ghost:hover { background: var(--surface-2); transform: translateY(-3px); }
.btn-sm { padding: 9px 18px; font-size: 0.85rem; }
.btn i, .btn span.ion { font-size: 0.95em; }

/* =========================
   Hero
   ========================= */
.hero {
	min-height: 100vh;
	display: flex;
	align-items: center;
	padding: calc(var(--nav-h) + 40px) 0 80px;
}
.hero .wrap { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 60px; align-items: center; }

.hero h1 {
	font-size: clamp(2.4rem, 5.2vw, 4rem);
	line-height: 1.08;
	margin-bottom: 20px;
}
.hero .role {
	font-size: clamp(1.1rem, 2vw, 1.4rem);
	color: var(--text-muted);
	font-weight: 400;
	margin-bottom: 22px;
}
.hero .role b { color: var(--text); font-weight: 600; }
.hero .lede { max-width: 540px; color: var(--text-muted); font-size: 1.03rem; margin-bottom: 34px; }

.hero-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; }

.hero-socials { display: flex; gap: 12px; }

.hero-stats { display: flex; gap: 36px; margin-top: 8px; flex-wrap: wrap; }
.hero-stats .stat > b { display: block; font-size: 1.5rem; font-weight: 700; }
.hero-stats .stat > span { font-size: 0.82rem; color: var(--text-muted); }

.hero-portrait { position: relative; display: flex; justify-content: center; }
.hero-portrait .frame {
	position: relative;
	width: min(360px, 100%);
	aspect-ratio: 1 / 1.08;
	border-radius: 32px;
	overflow: hidden;
	background: var(--surface);
	border: 1px solid var(--border);
	box-shadow: var(--shadow);
}
.hero-portrait .frame img { width: 100%; height: 100%; object-fit: cover; }
.hero-portrait .frame::after {
	content: '';
	position: absolute; inset: 0;
	background: linear-gradient(180deg, transparent 55%, rgba(0,0,0,.55));
}
.hero-portrait .glow {
	position: absolute;
	width: 80%; height: 80%;
	background: var(--gradient);
	filter: blur(90px);
	opacity: 0.35;
	z-index: -1;
	border-radius: 50%;
}
.floating-card {
	position: absolute;
	display: flex; align-items: center; gap: 10px;
	padding: 12px 16px;
	background: rgba(18,21,28,0.85);
	backdrop-filter: blur(10px);
	border: 1px solid var(--border);
	border-radius: var(--radius-sm);
	font-size: 0.82rem;
	font-weight: 500;
	box-shadow: 0 14px 30px -12px rgba(0,0,0,.6);
	animation: float 5s ease-in-out infinite;
}
.floating-card i { color: var(--accent-2); }
.floating-card.fc-1 { top: 8%; left: -8%; animation-delay: 0s; }
@keyframes float { 0%,100% { transform: translateY(0);} 50% { transform: translateY(-10px);} }

.scroll-cue {
	position: absolute;
	bottom: 28px; left: 50%; transform: translateX(-50%);
	display: flex; flex-direction: column; align-items: center; gap: 8px;
	color: var(--text-faint);
	font-size: 0.75rem;
	letter-spacing: 0.1em;
	text-transform: uppercase;
}
.scroll-cue .line { width: 1px; height: 30px; background: linear-gradient(var(--text-faint), transparent); animation: scrolldown 1.8s infinite; }
@keyframes scrolldown { 0% { opacity: 0; transform: scaleY(0); transform-origin: top;} 40% {opacity:1; transform: scaleY(1); transform-origin: top;} 100% {opacity:0; transform: scaleY(1); transform-origin: bottom;} }

/* =========================
   Generic section spacing
   ========================= */
.section { padding: 110px 0; border-top: 1px solid var(--border); }
.section.tight { padding-top: 90px; padding-bottom: 90px; }

/* =========================
   About
   ========================= */
.about-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 50px; }
.about-text p { color: var(--text-muted); margin: 0 0 18px; }
.about-text p:last-child { margin-bottom: 0; }
.about-text strong { color: var(--text); }

.info-card {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 28px;
	height: fit-content;
}
.info-card .row { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--border); font-size: 0.92rem; }
.info-card .row:last-child { border-bottom: none; padding-bottom: 0; }
.info-card .row span:first-child { color: var(--text-muted); }
.info-card .row span:last-child { font-weight: 500; }
.info-card .row span:last-child #age-intro { font: inherit; color: inherit; }

.companies-strip { margin-top: 64px; }
.companies-strip .label { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--text-faint); margin-bottom: 24px; }
.logo-row { display: flex; align-items: center; gap: 48px; flex-wrap: wrap; }
.logo-row a { opacity: 0.6; transition: opacity .25s, transform .25s; filter: grayscale(1) brightness(1.8); }
.logo-row a:hover { opacity: 1; transform: translateY(-2px); }
.logo-row img { height: 30px; width: auto; }
.logo-row svg { height: 26px; width: auto; }
.wordmark {
	display: flex;
	align-items: baseline;
	gap: 6px;
	font-weight: 700;
	font-size: 1.05rem;
	letter-spacing: -0.01em;
	color: var(--text);
	opacity: 0.75;
	transition: opacity .25s, transform .25s;
	filter: none;
}
.wordmark:hover { opacity: 1; transform: translateY(-2px); }
.wordmark span { font-weight: 400; color: var(--text-muted); font-size: 0.95rem; }

/* =========================
   Timeline (experience/education)
   ========================= */
.split-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.col-heading { display: flex; align-items: center; gap: 12px; margin-bottom: 32px; }
.col-heading .ic { width: 40px; height: 40px; border-radius: 12px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; font-size: 1.05rem; }
.col-heading h3 { font-size: 1.15rem; }

.timeline { position: relative; padding-left: 26px; }
.timeline::before { content: ''; position: absolute; left: 5px; top: 6px; bottom: 6px; width: 1px; background: var(--border); }
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
	content: '';
	position: absolute; left: -26px; top: 4px;
	width: 11px; height: 11px; border-radius: 50%;
	background: var(--bg); border: 2px solid var(--accent);
}
.tl-item .date { font-size: 0.78rem; color: var(--accent-2); font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; margin-bottom: 6px; }
.tl-item h4 { font-size: 1.05rem; margin-bottom: 2px; }
.tl-item .org { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 10px; }
.tl-item p, .tl-item ul { color: var(--text-muted); font-size: 0.92rem; margin: 0 0 8px; }
.tl-item .proj { color: var(--text); font-weight: 600; }
.tl-item details { margin-top: 6px; }
.tl-item summary { cursor: pointer; color: var(--accent); font-size: 0.85rem; font-weight: 600; list-style: none; }
.tl-item summary::-webkit-details-marker { display: none; }
.tl-item summary::after { content: '  →'; }
.tl-item details[open] summary::after { content: '  ↑'; }
.tl-item details .inner { margin-top: 10px; padding: 14px 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 0.88rem; }
.tl-item details .inner p { margin-bottom: 10px; }
.tl-item details .inner p:last-child { margin-bottom: 0; }

/* =========================
   Skills
   ========================= */
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 8px; }
/* With an odd card count, stretch the trailing card across the full row instead of leaving a gap */
.skills-grid .skill-card:last-child:nth-child(3n+1) { grid-column: 1 / -1; }
.skills-grid .skill-card:last-child:nth-child(3n+1) .tag-list { max-width: 640px; }
.skill-card {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	padding: 26px;
	transition: border-color .25s, transform .25s;
}
.skill-card:hover { border-color: var(--border-strong); transform: translateY(-4px); }
.skill-card .head { display: flex; align-items: center; gap: 12px; margin-bottom: 18px; }
.skill-card .head .ic { width: 36px; height: 36px; border-radius: 10px; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; }
.skill-card .head h4 { font-size: 1rem; }
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
	padding: 6px 12px;
	font-size: 0.8rem;
	font-weight: 500;
	border-radius: 100px;
	background: var(--surface-2);
	border: 1px solid var(--border);
	color: var(--text-muted);
}

.resume-download { margin-top: 44px; display: flex; justify-content: center; }

/* =========================
   Projects
   ========================= */
.filter-bar { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 40px; }
.filter-chip {
	padding: 9px 18px;
	border-radius: 100px;
	font-size: 0.85rem;
	font-weight: 500;
	border: 1px solid var(--border);
	background: transparent;
	color: var(--text-muted);
	cursor: pointer;
	transition: all .2s var(--ease);
}
.filter-chip:hover { color: var(--text); border-color: var(--border-strong); }
.filter-chip.active { background: var(--text); color: var(--bg); border-color: var(--text); }

.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.project-card {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius);
	overflow: hidden;
	display: flex;
	flex-direction: column;
	transition: transform .3s var(--ease), border-color .3s, box-shadow .3s;
}
.project-card.hidden { display: none; }
.project-card:hover { transform: translateY(-6px); border-color: var(--border-strong); box-shadow: var(--shadow); }

.project-thumb {
	position: relative;
	aspect-ratio: 16 / 10;
	overflow: hidden;
	background: var(--surface-2);
	display: grid;
	place-items: center;
}
.project-thumb img.shot {
	width: 100%; height: 100%; object-fit: cover;
	transition: transform .5s var(--ease);
}
.project-card:hover .project-thumb img.shot { transform: scale(1.06); }
.project-thumb.placeholder { background: var(--tile-bg, var(--gradient)); }
.project-thumb.placeholder i { font-size: 2.6rem; color: rgba(6,8,12,0.8); }
.project-thumb.logo-tile { background: var(--tile-bg, linear-gradient(135deg,#1a1d26,#12151c)); }
.project-thumb.logo-tile img.logo {
	width: 34%; height: 34%; object-fit: contain;
	border-radius: 22%;
	box-shadow: 0 20px 40px -12px rgba(0,0,0,.55);
}
.project-thumb .badge {
	position: absolute; top: 14px; left: 14px;
	padding: 5px 12px;
	font-size: 0.72rem;
	font-weight: 600;
	letter-spacing: .03em;
	border-radius: 100px;
	background: rgba(10,12,16,0.65);
	backdrop-filter: blur(6px);
	border: 1px solid rgba(255,255,255,0.14);
}
.project-thumb .live-dot {
	position: absolute; top: 14px; right: 14px;
	display: flex; align-items: center; gap: 6px;
	padding: 5px 10px;
	font-size: 0.7rem;
	font-weight: 600;
	border-radius: 100px;
	background: rgba(10,12,16,0.65);
	backdrop-filter: blur(6px);
	border: 1px solid rgba(255,255,255,0.14);
}
.project-thumb .live-dot span { width: 6px; height: 6px; border-radius: 50%; background: #4ade80; box-shadow: 0 0 8px #4ade80; }

/* Phone mockup (iPhone-style frame) used for mobile app screenshots */
.project-thumb.phone-tile { background: var(--tile-bg, linear-gradient(135deg,#1a1d26,#12151c)); padding: 42px 0 14px; align-items: center; }
.phone-mockup {
	position: relative;
	height: 100%;
	max-height: 100%;
	aspect-ratio: 9 / 19.5;
	background: linear-gradient(160deg, #3a3d46, #111318 55%, #050608);
	border-radius: 26px;
	padding: 4px;
	box-shadow:
		0 24px 46px -14px rgba(0,0,0,.65),
		inset 0 0 0 1px rgba(255,255,255,0.12),
		inset 0 1px 0 rgba(255,255,255,0.25);
	transition: transform .5s var(--ease);
}
.project-card:hover .phone-mockup { transform: translateY(-6px); }
.phone-mockup .screen {
	position: relative;
	width: 100%; height: 100%;
	border-radius: 22px;
	overflow: hidden;
	background: #05070a;
	cursor: zoom-in;
}
.phone-mockup .screen img {
	width: 100%; height: 100%;
	object-fit: contain;
	object-position: center;
	display: block;
}
.phone-mockup .island {
	position: absolute;
	top: 8px; left: 50%; transform: translateX(-50%);
	width: 32%; height: 4%;
	min-height: 13px;
	background: #050608;
	border-radius: 100px;
	z-index: 2;
}
/* Side buttons */
.phone-mockup::before,
.phone-mockup::after {
	content: '';
	position: absolute;
	background: linear-gradient(90deg, #46484f, #2a2c31);
	border-radius: 3px;
}
.phone-mockup::before { left: -3px; top: 22%; width: 3px; height: 9%; }
.phone-mockup::after { left: -3px; top: 34%; width: 3px; height: 14%; }

/* Zoom-to-enlarge affordance */
.zoom-hint {
	position: absolute; inset: 0;
	display: flex; align-items: center; justify-content: center;
	background: rgba(6,8,12,0);
	color: #fff; font-size: 1.3rem;
	opacity: 0;
	transition: opacity .25s, background .25s;
	pointer-events: none;
	z-index: 3;
}
.phone-mockup .screen:hover .zoom-hint,
.project-thumb:hover > .zoom-hint { opacity: 1; background: rgba(6,8,12,0.4); }
.project-thumb img.shot { cursor: zoom-in; }

.project-body { padding: 24px; display: flex; flex-direction: column; gap: 14px; flex: 1; }
.project-body h3 { font-size: 1.12rem; }
.project-body p { color: var(--text-muted); font-size: 0.9rem; margin: 0; flex: 1; }
.project-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.project-tags span {
	font-size: 0.72rem;
	font-weight: 500;
	padding: 4px 10px;
	border-radius: 100px;
	background: var(--surface-2);
	color: var(--text-muted);
	border: 1px solid var(--border);
}
.project-links { display: flex; gap: 10px; margin-top: 4px; }
.project-links a {
	display: inline-flex; align-items: center; gap: 7px;
	font-size: 0.83rem; font-weight: 600;
	color: var(--text);
	padding: 9px 14px;
	border-radius: 100px;
	border: 1px solid var(--border);
	transition: all .2s;
}
.project-links a:hover { border-color: var(--border-strong); background: var(--surface-2); }
.project-links a.primary { background: var(--text); color: var(--bg); border-color: var(--text); }
.project-links a.primary:hover { opacity: 0.85; }

.more-projects { text-align: center; margin-top: 48px; }

/* =========================
   Contact
   ========================= */
.contact-card {
	background: var(--surface);
	border: 1px solid var(--border);
	border-radius: var(--radius-lg);
	padding: 64px;
	text-align: center;
	position: relative;
	overflow: hidden;
}
.contact-card::before {
	content: '';
	position: absolute; inset: -2px;
	background: radial-gradient(500px 260px at 50% -10%, rgba(124,157,255,0.18), transparent 60%);
}
.contact-card h2 { font-size: clamp(1.8rem, 3.4vw, 2.6rem); position: relative; margin-bottom: 16px; }
.contact-card p { color: var(--text-muted); max-width: 480px; margin: 0 auto 32px; position: relative; }
.contact-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; position: relative; margin-bottom: 36px; }
.contact-meta { display: flex; gap: 28px; justify-content: center; flex-wrap: wrap; position: relative; color: var(--text-muted); font-size: 0.9rem; }
.contact-meta span i { color: var(--accent); margin-right: 8px; }

/* =========================
   Footer
   ========================= */
footer.site-footer { padding: 40px 0; border-top: 1px solid var(--border); }
footer.site-footer .wrap { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; }
footer.site-footer p { color: var(--text-faint); font-size: 0.85rem; margin: 0; }
.footer-socials { display: flex; gap: 10px; }
.back-to-top {
	position: fixed;
	right: 28px; bottom: 28px;
	width: 46px; height: 46px;
	border-radius: 50%;
	background: var(--surface);
	border: 1px solid var(--border-strong);
	color: var(--text);
	display: grid; place-items: center;
	opacity: 0; pointer-events: none;
	transform: translateY(10px);
	transition: all .3s var(--ease);
	z-index: 90;
}
.back-to-top.show { opacity: 1; pointer-events: auto; transform: translateY(0); }

/* =========================
   Reveal animation
   ========================= */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }

/* =========================
   Responsive
   ========================= */
@media (max-width: 980px) {
	.hero .wrap { grid-template-columns: 1fr; gap: 40px; }
	.hero-portrait { order: -1; }
	.hero-portrait .frame { width: min(260px, 60%); }
	.about-grid { grid-template-columns: 1fr; }
	.split-cols { grid-template-columns: 1fr; gap: 48px; }
	.skills-grid { grid-template-columns: repeat(2, 1fr); }
	.projects-grid { grid-template-columns: repeat(2, 1fr); }
	.contact-card { padding: 48px 28px; }
}

@media (max-width: 720px) {
	:root { --nav-h: 68px; }
	.nav-links { display: none; }
	.nav-toggle { display: flex; }
	.nav-cta .icon-btn { display: none; }
	.hero-stats { gap: 24px; }
	.skills-grid { grid-template-columns: 1fr; }
	.projects-grid { grid-template-columns: 1fr; }
	.floating-card { display: none; }
	.section { padding: 76px 0; }
	.logo-row { gap: 28px; }
	footer.site-footer .wrap { flex-direction: column; text-align: center; }
}

/* Mobile nav drawer */
.mobile-nav {
	position: fixed;
	inset: 0;
	z-index: 99;
	background: rgba(6,8,11,0.98);
	display: flex;
	flex-direction: column;
	align-items: center;
	justify-content: center;
	gap: 8px;
	opacity: 0;
	pointer-events: none;
	transition: opacity .3s var(--ease);
}
.mobile-nav.open { opacity: 1; pointer-events: auto; }
.mobile-nav a { font-size: 1.4rem; font-weight: 500; padding: 14px 0; color: var(--text-muted); }
.mobile-nav a.active { color: var(--text); }
.mobile-nav .mn-socials { display: flex; gap: 16px; margin-top: 26px; }

/* =========================
   Screenshot Lightbox
   ========================= */
.lightbox {
	position: fixed;
	inset: 0;
	z-index: 1000;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 48px;
	background: rgba(5,6,9,0.92);
	backdrop-filter: blur(6px);
	opacity: 0;
	visibility: hidden;
	transition: opacity .3s var(--ease), visibility .3s;
}
.lightbox.active { opacity: 1; visibility: visible; }
.lightbox img {
	max-width: min(84vw, 560px);
	max-height: 86vh;
	object-fit: contain;
	border-radius: 20px;
	background: #05070a;
	box-shadow: 0 40px 80px -20px rgba(0,0,0,.7);
	transform: scale(.96);
	transition: transform .3s var(--ease);
}
.lightbox.active img { transform: scale(1); }
.lightbox-close {
	position: absolute;
	top: 24px; right: 24px;
	width: 46px; height: 46px;
	border-radius: 50%;
	background: var(--surface);
	border: 1px solid var(--border-strong);
	color: var(--text);
	display: grid; place-items: center;
	font-size: 1.1rem;
	cursor: pointer;
	transition: all .2s;
}
.lightbox-close:hover { background: var(--surface-2); border-color: var(--border-strong); transform: rotate(90deg); }