/* =========================================================
   Samuele Bistoletti / personal site stylesheet
   Modern, mobile-first, no external dependencies
   ========================================================= */

:root {
  /* ----- Color tokens ----- */
  --bg-0: #06080f;
  --bg-1: #0a0e1c;
  --bg-2: #0d1226;

  --surface-0: rgba(255, 255, 255, 0.025);
  --surface-1: rgba(255, 255, 255, 0.045);
  --surface-2: rgba(255, 255, 255, 0.075);

  --text:    rgba(255, 255, 255, 0.96);
  --muted:   rgba(255, 255, 255, 0.72);
  --muted-2: rgba(255, 255, 255, 0.54);
  --line:    rgba(255, 255, 255, 0.10);
  --line-strong: rgba(255, 255, 255, 0.22);

  --accent:   #8b6cff;
  --accent-2: #4ad8ff;
  --accent-3: #ff8fb8; /* soft warm for highlights */
  --ok:       #2ee59d;

  /* Component shadows / glows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,.4), 0 4px 12px rgba(0,0,0,.25);
  --shadow:    0 4px 8px rgba(0,0,0,.35), 0 20px 60px rgba(0,0,0,.45);
  --shadow-lg: 0 8px 16px rgba(0,0,0,.45), 0 40px 80px rgba(0,0,0,.55);
  --glow-accent: 0 0 40px rgba(139, 108, 255, 0.35);

  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius:    18px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  /* Typography */
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Inter", Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";

  /* Fluid scale (mobile -> desktop) */
  --fs-xs:   clamp(0.72rem, 0.7rem + 0.1vw, 0.78rem);
  --fs-sm:   clamp(0.82rem, 0.78rem + 0.2vw, 0.92rem);
  --fs-base: clamp(0.95rem, 0.92rem + 0.2vw, 1.05rem);
  --fs-md:   clamp(1.02rem, 0.98rem + 0.35vw, 1.18rem);
  --fs-lg:   clamp(1.2rem, 1.05rem + 0.7vw, 1.55rem);
  --fs-xl:   clamp(1.55rem, 1.2rem + 1.6vw, 2.4rem);
  --fs-2xl:  clamp(1.9rem, 1.2rem + 3vw, 4.4rem);

  /* Spacing scale */
  --sp-1: 4px;  --sp-2: 8px;  --sp-3: 12px; --sp-4: 16px;
  --sp-5: 24px; --sp-6: 32px; --sp-7: 48px; --sp-8: 64px;
  --sp-9: 96px;

  --container: 980px;
  --container-wide: 1180px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* =========================================================
   Reset & base
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg-1);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern", "ss01", "cv11";
}

/* Multi-layer mesh-gradient background (replaces flat dark) */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -2;
  background:
    radial-gradient(900px 700px at 12% 8%,   rgba(139, 108, 255, 0.22), transparent 60%),
    radial-gradient(800px 600px at 88% 12%,  rgba(74, 216, 255, 0.18),  transparent 58%),
    radial-gradient(700px 500px at 50% 95%,  rgba(255, 143, 184, 0.10), transparent 60%),
    radial-gradient(1000px 800px at 100% 60%, rgba(74, 216, 255, 0.08),  transparent 60%),
    linear-gradient(180deg, var(--bg-0) 0%, var(--bg-1) 50%, var(--bg-2) 100%);
}

/* Subtle film-grain overlay for premium texture */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  opacity: 0.4;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 1 0 0 0 0 1 0 0 0 0 1 0 0 0 0.5 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.6'/%3E%3C/svg%3E");
}

a { color: inherit; text-decoration: none; }
img, svg { display: block; max-width: 100%; }
h1, h2, h3, h4 { margin: 0; line-height: 1.15; letter-spacing: -0.02em; font-weight: 700; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
button { font: inherit; cursor: pointer; }
strong { color: var(--text); font-weight: 600; }

/* Mobile tap optimisation: remove 300ms delay + iOS orange tap flash */
a, button, [role="button"], summary {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

/* Long URLs and codes wrap inside their container instead of overflowing */
.deal p, .deal-tag, .tiny-link, code {
  overflow-wrap: anywhere;
  word-break: break-word;
}

/* ----- Accessibility ----- */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
  border-radius: 6px;
}
.skip-link {
  position: absolute;
  top: -100px; left: 16px;
  padding: 10px 16px;
  background: var(--accent);
  color: #fff;
  border-radius: 10px;
  z-index: 100;
  font-weight: 600;
  font-size: 14px;
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 12px; }

@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;
  }
}

/* =========================================================
   Layout
   ========================================================= */
.wrap {
  max-width: var(--container);
  margin: 0 auto;
  /* Safe-area-aware padding for notched phones (landscape) */
  padding-left:  max(24px, env(safe-area-inset-left));
  padding-right: max(24px, env(safe-area-inset-right));
}
.wrap--wide { max-width: var(--container-wide); }
@media (min-width: 768px) {
  .wrap {
    padding-left:  max(32px, env(safe-area-inset-left));
    padding-right: max(32px, env(safe-area-inset-right));
  }
}

.section { padding: var(--sp-8) 0; }
@media (min-width: 768px) { .section { padding: var(--sp-9) 0; } }

.section-head { margin-bottom: var(--sp-6); }
@media (min-width: 768px) { .section-head { margin-bottom: var(--sp-7); } }

/* Minimal gradient accent above each section heading */
.section-eyebrow {
  display: block;
  width: 36px;
  height: 2px;
  border-radius: 1px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  margin-bottom: 18px;
}

.section-head h2 {
  font-size: var(--fs-xl);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: var(--sp-3);
  background: linear-gradient(180deg, #fff 0%, rgba(255,255,255,0.85) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.section-head p {
  color: var(--muted);
  font-size: var(--fs-md);
  max-width: 60ch;
  line-height: 1.6;
}

/* =========================================================
   Header: refined wordmark style
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(6, 8, 15, 0.72);
  backdrop-filter: blur(24px) saturate(1.6);
  -webkit-backdrop-filter: blur(24px) saturate(1.6);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 18px 0;
  min-height: 72px;
}
@media (max-width: 767px) {
  .header-inner { gap: 10px; }
}

/* Brand: glowing dot + wordmark, no boxy logo */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  color: var(--text);
  margin-right: auto;
  min-width: 0;
  flex-shrink: 1;
  transition: opacity .2s var(--ease);
}
@media (max-width: 767px) {
  .brand { gap: 12px; }
}
.brand:hover { opacity: 0.82; }

.brand-mark {
  position: relative;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, #ffffff, transparent 55%),
    linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow:
    0 0 0 4px rgba(139, 108, 255, 0.08),
    0 0 18px rgba(139, 108, 255, 0.55);
  flex-shrink: 0;
}
.brand-mark::before {
  content: "";
  position: absolute;
  inset: -9px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(139,108,255,.22), transparent 70%);
  pointer-events: none;
  animation: brandPulse 3.8s var(--ease) infinite;
}
@keyframes brandPulse {
  0%, 100% { opacity: 0.45; transform: scale(1); }
  50%      { opacity: 0.75; transform: scale(1.18); }
}

.brand-name {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.015em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  background: linear-gradient(180deg, #ffffff 0%, rgba(255,255,255,0.85) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
@media (max-width: 380px) {
  .brand-name { font-size: 14px; }
}

/* Hamburger toggle: visible on mobile only */
.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface-1);
  color: var(--text);
  cursor: pointer;
  transition: background .2s var(--ease), border-color .2s var(--ease);
}
.nav-toggle:hover {
  background: var(--surface-2);
  border-color: var(--line-strong);
}
.nav-toggle svg {
  width: 20px;
  height: 20px;
}
.nav-toggle-close { display: none; }
.nav-toggle[aria-expanded="true"] .nav-toggle-open { display: none; }
.nav-toggle[aria-expanded="true"] .nav-toggle-close { display: block; }
@media (min-width: 768px) { .nav-toggle { display: none; } }

/* Primary nav: drawer on mobile, inline + underline-on-hover on desktop */
.primary-nav {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
}
.primary-nav a {
  position: relative;
  padding: 6px 0;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: -0.005em;
  transition: color .2s var(--ease);
}
.primary-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform .35s var(--ease);
}
.primary-nav a:hover { color: var(--text); }
.primary-nav a:hover::after { transform: scaleX(1); }

@media (max-width: 767px) {
  .primary-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 12px 12px;
    background: rgba(6, 8, 15, 0.97);
    backdrop-filter: blur(28px) saturate(1.6);
    -webkit-backdrop-filter: blur(28px) saturate(1.6);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity .25s var(--ease), transform .25s var(--ease), visibility .25s;
  }
  .primary-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .primary-nav a {
    padding: 14px 16px;
    font-size: 15px;
    color: var(--text);
    border-radius: 10px;
    min-height: 48px;
    display: flex;
    align-items: center;
  }
  .primary-nav a:hover { background: var(--surface-1); }
  .primary-nav a::after { display: none; }
}

/* Lang switch: minimal text + thin divider */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
}
.lang-switch a {
  padding: 10px 5px;
  color: var(--muted-2);
  transition: color .2s var(--ease);
  min-height: 44px;
  min-width: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}
@media (max-width: 380px) {
  .lang-switch { gap: 4px; }
  .lang-switch a { padding: 10px 3px; min-width: 24px; font-size: 11.5px; }
}
.lang-switch a:hover { color: var(--text); }
.lang-switch a[aria-current="true"] {
  color: var(--text);
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.lang-sep {
  color: var(--muted-2);
  opacity: 0.4;
  font-weight: 400;
  user-select: none;
}

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 20px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  min-height: 46px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease), box-shadow .3s var(--ease);
}
.btn:hover {
  transform: translateY(-1px);
  background: rgba(255,255,255,.1);
  border-color: var(--line-strong);
}
.btn:active { transform: translateY(0); }

.btn-primary {
  border-color: transparent;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff;
  box-shadow: 0 4px 14px rgba(139,108,255,.35), 0 12px 32px rgba(139,108,255,.2);
}
.btn-primary:hover {
  filter: brightness(1.08) saturate(1.1);
  box-shadow: 0 6px 20px rgba(139,108,255,.5), 0 16px 40px rgba(139,108,255,.3);
}
/* Shine sweep on primary hover */
.btn-primary::after {
  content: "";
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.25), transparent);
  transition: left .7s var(--ease);
  pointer-events: none;
}
.btn-primary:hover::after { left: 100%; }

.btn-sm {
  padding: 9px 14px;
  font-size: 13px;
  min-height: 38px;
}
.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
}
.btn-ghost:hover { background: var(--surface-2); }

/* =========================================================
   Hero
   ========================================================= */
.hero {
  padding: var(--sp-8) 0 var(--sp-7);
  position: relative;
  overflow: hidden; /* contain the aurora glow on narrow viewports */
}
@media (min-width: 768px) { .hero { padding: var(--sp-9) 0 var(--sp-8); } }

.hero-content {
  max-width: 760px;
  position: relative;
}

.hero h1 {
  font-size: var(--fs-2xl);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin-bottom: var(--sp-5);
  background: linear-gradient(180deg, #ffffff 0%, rgba(255,255,255,0.78) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  position: relative;
  isolation: isolate;
  /* Allow the name to break across lines on extreme narrow viewports */
  overflow-wrap: anywhere;
  hyphens: none;
}
/* Soft aurora glow behind the name */
.hero h1::before {
  content: "";
  position: absolute;
  inset: -30% -10% -30% -10%;
  background:
    radial-gradient(60% 80% at 30% 50%, rgba(139, 108, 255, 0.28), transparent 60%),
    radial-gradient(50% 70% at 80% 50%, rgba(74, 216, 255, 0.22), transparent 60%);
  filter: blur(40px);
  z-index: -1;
  pointer-events: none;
}

.hero-lead {
  color: var(--muted);
  font-size: var(--fs-md);
  line-height: 1.7;
  margin-bottom: var(--sp-6);
  max-width: 60ch;
}
.hero-lead strong { color: var(--text); }

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
}
@media (max-width: 480px) {
  .hero-ctas { flex-direction: column; align-items: stretch; }
  .hero-ctas .btn { width: 100%; }
}

/* =========================================================
   Profile / About
   ========================================================= */
.profile-bio { max-width: 760px; }
.profile-bio p {
  color: var(--muted);
  font-size: var(--fs-md);
  margin-bottom: var(--sp-4);
  line-height: 1.75;
}
.profile-bio p:last-of-type { margin-bottom: var(--sp-5); }

.profile-credentials {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: var(--sp-5) 0 var(--sp-5);
  padding-top: var(--sp-5);
  border-top: 1px solid var(--line);
}
.profile-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-5);
  align-items: center;
}
.profile-links a {
  color: var(--accent-2);
  font-size: 15px;
  font-weight: 600;
  position: relative;
  padding-bottom: 2px;
  transition: color .2s var(--ease);
}
.profile-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%;
  height: 1px;
  background: var(--accent-2);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .3s var(--ease);
}
.profile-links a:hover { color: var(--text); }
.profile-links a:hover::after { transform: scaleX(1); background: var(--text); }

/* =========================================================
   Badges
   ========================================================= */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--surface-1);
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.005em;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.badge:hover {
  border-color: var(--line-strong);
  background: var(--surface-2);
}
.badge strong { color: var(--text); font-weight: 600; }

/* =========================================================
   Open source / projects
   ========================================================= */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}
@media (min-width: 768px) { .projects-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-5); } }

.project-card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--surface-2), var(--surface-0));
  padding: var(--sp-5);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  isolation: isolate;
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
@media (min-width: 768px) { .project-card { padding: var(--sp-6); } }
.project-card:hover {
  transform: translateY(-3px);
  border-color: rgba(139, 108, 255, 0.35);
  box-shadow: var(--shadow-lg), var(--glow-accent);
}
/* Top gradient hairline */
.project-card::before {
  content: "";
  position: absolute;
  top: 0; left: var(--sp-5); right: var(--sp-5);
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), var(--accent-2), transparent);
  opacity: 0;
  transition: opacity .3s var(--ease);
}
.project-card:hover::before { opacity: 1; }

.project-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--sp-3);
  flex-wrap: wrap;
  margin-bottom: var(--sp-3);
}
.project-card h3 {
  font-size: var(--fs-lg);
  font-weight: 700;
  letter-spacing: -0.015em;
}
.project-badges {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.project-card > p {
  color: var(--muted);
  font-size: var(--fs-sm);
  margin-bottom: var(--sp-5);
  line-height: 1.65;
}
.project-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
}

/* Deals row */
.deals-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
  margin-top: var(--sp-6);
  padding: var(--sp-5);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(139,108,255,.05), rgba(74,216,255,.04));
}
@media (min-width: 700px) { .deals-row { grid-template-columns: 1fr 1fr; gap: var(--sp-5); } }

.deal { display: flex; flex-direction: column; gap: 8px; }
.deal-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text);
  letter-spacing: 0.01em;
}
.deal-tag .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 12px rgba(46, 229, 157, 0.6);
}
.deal p {
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.55;
}
.deal code {
  font-family: var(--mono);
  font-size: 12px;
  padding: 3px 8px;
  border-radius: 6px;
  background: rgba(0,0,0,.4);
  border: 1px solid var(--line);
  color: var(--text);
  letter-spacing: 0.02em;
}
.tiny-link {
  color: var(--muted);
  border-bottom: 1px dashed var(--line-strong);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.tiny-link:hover { color: var(--text); border-bottom-color: var(--accent-2); }

/* =========================================================
   Contact
   ========================================================= */
.contact-section {
  position: relative;
}
/* Glow extends through to the footer to avoid a visible seam */
.contact-section::before {
  content: "";
  position: absolute;
  inset: 0 0 -160px 0;
  background:
    radial-gradient(700px 400px at 15% 0%,   rgba(139,108,255,.16), transparent 60%),
    radial-gradient(600px 500px at 90% 100%, rgba(74,216,255,.12),  transparent 60%),
    radial-gradient(800px 400px at 50% 100%, rgba(139,108,255,.06), transparent 60%);
  pointer-events: none;
  z-index: 0;
}
.contact-section > .wrap { position: relative; z-index: 1; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}
@media (min-width: 700px) { .contact-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-5); } }

.contact-card {
  padding: var(--sp-6);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, var(--surface-2), var(--surface-0));
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.contact-card::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -50%;
  width: 220%;
  height: 220%;
  background: radial-gradient(circle, rgba(139,108,255,0.12), transparent 50%);
  transform: scale(0.9);
  transition: transform .8s var(--ease);
  z-index: -1;
}
.contact-card:hover {
  transform: translateY(-3px);
  border-color: rgba(139, 108, 255, 0.35);
  box-shadow: var(--shadow-lg);
}
.contact-card:hover::before { transform: scale(1.2); }

.contact-card h3 {
  font-size: var(--fs-md);
  font-weight: 700;
  letter-spacing: -0.015em;
}
.contact-card p {
  color: var(--muted);
  font-size: var(--fs-sm);
  line-height: 1.6;
  margin-bottom: var(--sp-2);
}
.contact-card .btn { width: 100%; }

/* Email button: click copies + opens mail client, with visual feedback */
.email-btn {
  position: relative;
  overflow: hidden;
}
.email-btn .email-btn-text,
.email-btn .email-btn-feedback {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: opacity .25s var(--ease), transform .25s var(--ease);
}
.email-btn .email-btn-feedback {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateY(4px);
  color: var(--ok);
  pointer-events: none;
  font-weight: 600;
}
.email-btn.is-copied .email-btn-text {
  opacity: 0;
  transform: translateY(-4px);
}
.email-btn.is-copied .email-btn-feedback {
  opacity: 1;
  transform: translateY(0);
}

/* =========================================================
   Footer
   ========================================================= */
/* Footer flows from the contact section glow, no hard separator */
.site-footer {
  padding: var(--sp-6) 0 var(--sp-5);
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--sp-5);
}
@media (min-width: 700px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--sp-5);
  }
}
.footer-brand {
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}
.footer-brand strong {
  color: var(--text);
  display: block;
  margin-bottom: 4px;
  font-size: 14px;
  letter-spacing: -0.01em;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.footer-links a {
  color: var(--muted);
  font-size: 13px;
  transition: color .2s var(--ease);
}
.footer-links a:hover { color: var(--text); }
.footer-trust {
  color: var(--muted-2);
  font-size: 12px;
  margin-top: var(--sp-5);
  padding-top: var(--sp-4);
  border-top: 1px solid var(--line);
  text-align: center;
  line-height: 1.5;
}

/* =========================================================
   Reveal animation (progressive enhancement, gated by JS class)
   ========================================================= */
.js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .js .reveal { opacity: 1; transform: none; }
}

/* =========================================================
   Utilities
   ========================================================= */
.mono { font-family: var(--mono); }
.muted { color: var(--muted); }
.text-center { text-align: center; }