/* ═══════════════════════════════════════════════
   Jakub Gwizda — Portfolio  ·  styles.css
   ═══════════════════════════════════════════════ */

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Design Tokens ── */
:root {
  --bg:           #06080d;
  --bg2:          #0c0f17;
  --bg3:          #121621;
  --surface:      #161b2a;
  --accent:       #6c8cff;
  --accent-dim:   #4a6ae0;
  --accent-bright:#8fadff;
  --accent-glow:  rgba(108,140,255,0.15);
  --accent-glow2: rgba(108,140,255,0.08);
  --cyan:         #4dd8e0;
  --purple:       #a78bfa;
  --text:         #e4e8f4;
  --text-secondary:#a0a8c4;
  --muted:        #5e6580;
  --border:       rgba(108,140,255,0.12);
  --border-hover: rgba(108,140,255,0.35);
  --card-bg:      rgba(18,22,33,0.65);
  --glass-bg:     rgba(12,15,23,0.72);
  --radius:       14px;
  --radius-sm:    8px;
  --nav-height:   68px;
  --font-display: 'Syne', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  line-height: 1.65;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Animated mesh-gradient background ── */
.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.bg-mesh::before,
.bg-mesh::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.4;
  animation: mesh-drift 16s ease-in-out infinite alternate;
}

.bg-mesh::before {
  width: 650px; height: 650px;
  background: radial-gradient(circle, rgba(108,140,255,0.18), transparent 70%);
  top: -10%; right: -5%;
}

.bg-mesh::after {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(77,216,224,0.12), transparent 70%);
  bottom: -8%; left: -8%;
  animation-delay: -8s;
  animation-duration: 20s;
}

@keyframes mesh-drift {
  0%   { transform: translate(0, 0) scale(1); }
  50%  { transform: translate(40px, -30px) scale(1.08); }
  100% { transform: translate(-20px, 30px) scale(0.95); }
}

/* Canvas grid sits behind everything */
#grid-canvas {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: 0.35;
}

/* Cursor glow follows mouse */
.cursor-glow {
  position: fixed;
  width: 600px; height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(108,140,255,0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
  transform: translate(-50%, -50%);
  transition: left 0.3s ease-out, top 0.3s ease-out;
  will-change: left, top;
}

/* ── Noise overlay ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.25;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
}

/* ════════════════════════════════════════════════
   Navigation
   ════════════════════════════════════════════════ */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 2.5rem;
  background: var(--glass-bg);
  backdrop-filter: blur(20px) saturate(1.3);
  -webkit-backdrop-filter: blur(20px) saturate(1.3);
  border-bottom: 1px solid var(--border);
  transition: background 0.3s, box-shadow 0.3s;
}

nav.scrolled {
  background: rgba(6,8,13,0.92);
  box-shadow: 0 4px 30px rgba(0,0,0,0.3);
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 500;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: 0.1em;
  transition: color 0.2s;
}

.nav-logo .dot { color: var(--muted); }

.nav-logo:hover { color: var(--accent-bright); }

.nav-right {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.84rem;
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
  position: relative;
  padding-bottom: 2px;
  transition: color 0.25s;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0;
  height: 1.5px;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  border-radius: 2px;
  transition: width 0.3s ease;
}

.nav-links a:hover { color: var(--accent-bright); }
.nav-links a:hover::after { width: 100%; }

/* ── Language Switcher ── */
.lang-switcher {
  display: flex;
  align-items: center;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 0.73rem;
  letter-spacing: 0.06em;
}

.lang-btn {
  padding: 0.38rem 0.75rem;
  cursor: pointer;
  color: var(--muted);
  background: transparent;
  border: none;
  font-family: inherit;
  font-size: inherit;
  letter-spacing: inherit;
  transition: all 0.22s;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  white-space: nowrap;
}

.lang-btn:hover { color: var(--text); }

.lang-btn.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: #fff;
  box-shadow: 0 0 12px rgba(108,140,255,0.3);
}

.lang-divider {
  width: 1px;
  height: 20px;
  background: var(--border);
  flex-shrink: 0;
}

/* ── Hamburger (mobile) ── */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 2px;
  transition: all 0.3s ease;
}

.hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger.open span:nth-child(2) {
  opacity: 0;
}
.hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ════════════════════════════════════════════════
   Hero Section
   ════════════════════════════════════════════════ */
#hero {
  position: relative;
  z-index: 2;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 0 4rem;
  overflow: hidden;
}

/* Decorative floating orbs in hero */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(80px);
}

.hero-orb--1 {
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(108,140,255,0.15), transparent 70%);
  top: 5%; right: -5%;
  animation: orb-pulse 8s ease-in-out infinite alternate;
}

.hero-orb--2 {
  width: 350px; height: 350px;
  background: radial-gradient(circle, rgba(167,139,250,0.1), transparent 70%);
  bottom: 10%; left: -3%;
  animation: orb-pulse 10s ease-in-out infinite alternate-reverse;
}

@keyframes orb-pulse {
  0%   { transform: translate(0, 0) scale(1); opacity: 0.6; }
  100% { transform: translate(25px, -20px) scale(1.1); opacity: 1; }
}

.hero-badge {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--cyan);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 1.4rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  opacity: 0;
  animation: fade-up 0.8s 0.1s forwards;
}

.hero-badge::before {
  content: '';
  width: 32px;
  height: 1.5px;
  background: linear-gradient(90deg, var(--cyan), transparent);
  border-radius: 2px;
}

.hero-name {
  font-size: clamp(3.2rem, 9vw, 7rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.03em;
  opacity: 0;
  animation: fade-up 0.8s 0.25s forwards;
}

.hero-name .accent {
  background: linear-gradient(135deg, var(--accent), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-bio {
  margin-top: 1.8rem;
  max-width: 540px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  font-weight: 300;
  color: var(--text-secondary);
  line-height: 1.85;
  opacity: 0;
  animation: fade-up 0.8s 0.42s forwards;
}

.hero-cta {
  margin-top: 2.8rem;
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fade-up 0.8s 0.58s forwards;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  padding: 0.78rem 1.8rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  font-weight: 500;
  transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: #fff;
  border: 1px solid rgba(108,140,255,0.4);
  box-shadow: 0 4px 20px rgba(108,140,255,0.25);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 32px rgba(108,140,255,0.45);
  filter: brightness(1.12);
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.btn-primary:hover::before { opacity: 1; }

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.btn-outline:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-3px);
  box-shadow: 0 4px 20px rgba(108,140,255,0.15);
}

/* ── Scroll indicator ── */
.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0;
  animation: fade-up 0.8s 0.8s forwards;
}

.scroll-indicator span {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.scroll-mouse {
  width: 20px; height: 32px;
  border: 1.5px solid var(--muted);
  border-radius: 12px;
  position: relative;
}

.scroll-mouse::after {
  content: '';
  position: absolute;
  top: 6px; left: 50%;
  width: 3px; height: 6px;
  background: var(--accent);
  border-radius: 2px;
  transform: translateX(-50%);
  animation: scroll-dot 2s ease-in-out infinite;
}

@keyframes scroll-dot {
  0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
  50%      { opacity: 0.3; transform: translateX(-50%) translateY(10px); }
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(28px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ════════════════════════════════════════════════
   Shared Section Styles
   ════════════════════════════════════════════════ */
section {
  position: relative;
  z-index: 2;
  padding: 7rem 4rem;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--cyan);
  text-transform: uppercase;
  margin-bottom: 0.7rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.section-label::before {
  content: '';
  width: 24px;
  height: 1.5px;
  background: var(--cyan);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 3.5rem;
  background: linear-gradient(135deg, var(--text), var(--text-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ════════════════════════════════════════════════
   Skills / Tech Section
   ════════════════════════════════════════════════ */
#skills {
  background: var(--bg);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1rem;
  max-width: 900px;
}

.skill-chip {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.9rem 1.2rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(10px);
  transition: all 0.28s ease;
  cursor: default;
}

.skill-chip:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(108,140,255,0.12);
  background: rgba(18,22,33,0.9);
}

.skill-icon {
  font-size: 1.3rem;
  line-height: 1;
}

.skill-name {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--text-secondary);
  font-weight: 400;
}

.skill-chip:hover .skill-name { color: var(--text); }

/* ════════════════════════════════════════════════
   Projects Section
   ════════════════════════════════════════════════ */
#projects {
  background: var(--bg2);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}

.project-card {
  position: relative;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.8rem 2rem;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  transition: all 0.32s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  backdrop-filter: blur(10px);
}

/* Gradient shimmer on hover */
.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, rgba(108,140,255,0.08) 0%, rgba(77,216,224,0.04) 50%, transparent 100%);
  opacity: 0;
  transition: opacity 0.35s;
}

.project-card::after {
  content: '';
  position: absolute;
  top: 0; left: -75%;
  width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(108,140,255,0.05), transparent);
  transform: skewX(-15deg);
  transition: left 0.6s ease;
}

.project-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow:
    0 12px 40px rgba(108,140,255,0.12),
    0 0 0 1px rgba(108,140,255,0.08);
}

.project-card:hover::before { opacity: 1; }
.project-card:hover::after  { left: 125%; }

.project-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 1;
}

.project-icon {
  width: 42px; height: 42px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent-glow), var(--accent-glow2));
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  transition: border-color 0.3s, box-shadow 0.3s;
}

.project-card:hover .project-icon {
  border-color: var(--border-hover);
  box-shadow: 0 0 16px rgba(108,140,255,0.2);
}

.project-arrow {
  color: var(--muted);
  font-size: 1.15rem;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
}

.project-arrow svg {
  width: 18px; height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.project-card:hover .project-arrow {
  color: var(--accent);
  transform: translate(3px, -3px);
}

.project-name {
  font-size: 1.08rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  position: relative;
  z-index: 1;
}

.project-desc {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.75;
  flex: 1;
  position: relative;
  z-index: 1;
}

.project-meta {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
  position: relative;
  z-index: 1;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.67rem;
  padding: 0.22rem 0.65rem;
  border-radius: 4px;
  background: rgba(108,140,255,0.08);
  color: var(--accent);
  border: 1px solid rgba(108,140,255,0.15);
  letter-spacing: 0.04em;
  transition: all 0.25s;
}

.project-card:hover .tag {
  background: rgba(108,140,255,0.12);
  border-color: rgba(108,140,255,0.25);
}

/* "More projects" card */
.project-card--more {
  border-style: dashed;
  justify-content: center;
  align-items: center;
  text-align: center;
  min-height: 200px;
}

.more-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.7rem;
  position: relative;
  z-index: 1;
}

.more-icon {
  width: 48px; height: 48px;
  border-radius: 50%;
  border: 1.5px dashed var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--muted);
  transition: all 0.3s;
}

.project-card--more:hover .more-icon {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 20px var(--accent-glow);
}

/* ════════════════════════════════════════════════
   Contact Section
   ════════════════════════════════════════════════ */
#contact {
  background: var(--bg);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.1rem;
  max-width: 1000px;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  padding: 1.3rem 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text);
  transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  backdrop-filter: blur(10px);
  position: relative;
  overflow: hidden;
}

.contact-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-glow2), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.contact-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(108,140,255,0.1);
}

.contact-card:hover::before { opacity: 1; }

.contact-icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.2rem;
  position: relative;
  z-index: 1;
  transition: transform 0.3s, box-shadow 0.3s;
}

.contact-card:hover .contact-icon {
  transform: scale(1.08);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  position: relative;
  z-index: 1;
}

.contact-platform {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.contact-handle {
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

/* Icon color variants */
.ic-email   { background: rgba(255,107,107,0.12);  color: #ff6b6b; }
.ic-discord { background: rgba(88,101,242,0.12);   color: #5865F2; }
.ic-fb      { background: rgba(24,119,242,0.12);   color: #1877F2; }
.ic-ig      { background: linear-gradient(135deg, rgba(225,48,108,0.12), rgba(252,175,69,0.08)); color: #E1306C; }
.ic-github  { background: rgba(180,180,180,0.08);  color: #d4d4d4; }

/* ════════════════════════════════════════════════
   Divider
   ════════════════════════════════════════════════ */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), var(--accent-glow), var(--border), transparent);
  margin: 0 4rem;
  position: relative;
  z-index: 2;
}

/* ════════════════════════════════════════════════
   Footer
   ════════════════════════════════════════════════ */
footer {
  position: relative;
  z-index: 2;
  padding: 2.2rem 4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  border-top: 1px solid var(--border);
}

.footer-left {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--muted);
}

.footer-left span { color: var(--accent); }

.footer-right {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.5;
}

/* ════════════════════════════════════════════════
   Custom Scrollbar
   ════════════════════════════════════════════════ */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--accent-dim), var(--accent));
  border-radius: 3px;
}

/* ════════════════════════════════════════════════
   Responsive
   ════════════════════════════════════════════════ */
@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav-right {
    position: fixed;
    top: 0; right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    align-items: flex-start;
    padding: 5rem 2rem 2rem;
    background: rgba(6,8,13,0.96);
    backdrop-filter: blur(24px);
    border-left: 1px solid var(--border);
    gap: 2rem;
    transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
  }

  .nav-right.open { right: 0; }

  .nav-links {
    flex-direction: column;
    gap: 1.5rem;
  }

  .nav-links a { font-size: 1rem; }

  nav { padding: 0 1.5rem; }

  #hero { padding: 0 1.5rem; }
  section { padding: 5rem 1.5rem; }
  .divider { margin: 0 1.5rem; }
  footer { padding: 1.8rem 1.5rem; }

  .hero-name {
    font-size: clamp(2.6rem, 12vw, 4.5rem);
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .skills-grid {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  }

  .scroll-indicator { display: none; }
}

@media (max-width: 480px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }

  footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* ── Mobile menu overlay ── */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}

.nav-overlay.open {
  opacity: 1;
  pointer-events: all;
}