/* =========================================================
   Design tokens
   ========================================================= */
:root {
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Dark theme (default) */
  --bg: #0b0d12;
  --bg-alt: #0f121a;
  --surface: #151925;
  --surface-2: #1c2130;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --text: #e8eaf0;
  --text-muted: #9aa3b5;
  --text-faint: #6b7385;

  --accent: #8b5cf6;          /* violet — nod to Power Apps purple */
  --accent-2: #22d3ee;        /* cyan */
  --accent-soft: rgba(139, 92, 246, 0.14);
  --ok: #34d399;
  --warn: #fbbf24;

  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.25);

  --container: 1120px;
  --nav-h: 72px;

  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg: #f7f8fb;
  --bg-alt: #ffffff;
  --surface: #ffffff;
  --surface-2: #f1f3f8;
  --border: rgba(15, 23, 42, 0.08);
  --border-strong: rgba(15, 23, 42, 0.16);
  --text: #0f172a;
  --text-muted: #4b5567;
  --text-faint: #8a93a6;
  --accent-soft: rgba(139, 92, 246, 0.12);
  --shadow: 0 10px 40px rgba(15, 23, 42, 0.10);
  --shadow-sm: 0 2px 10px rgba(15, 23, 42, 0.06);
  color-scheme: light;
}

/* =========================================================
   Base
   ========================================================= */
*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  transition: background-color .3s ease, color .3s ease;
}

h1, h2, h3 { line-height: 1.15; letter-spacing: -0.02em; margin: 0; }
h2 { font-size: clamp(1.75rem, 3.2vw, 2.5rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; }
p { margin: 0 0 1rem; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img { max-width: 100%; display: block; }

.container {
  width: min(var(--container), 100% - 2.5rem);
  margin-inline: auto;
}

.gradient-text {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* =========================================================
   Buttons
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .8rem 1.35rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .95rem;
  border: 1px solid transparent;
  transition: transform .15s ease, box-shadow .2s ease, background-color .2s ease, border-color .2s ease;
  cursor: pointer;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--primary {
  color: #fff;
  background: linear-gradient(135deg, var(--accent), #6d3df0);
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.35);
}
.btn--primary:hover { box-shadow: 0 12px 32px rgba(139, 92, 246, 0.45); }

.btn--ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}
.btn--ghost:hover { background: var(--surface); border-color: var(--accent); }

.icon-btn {
  display: inline-grid;
  place-items: center;
  width: 40px; height: 40px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: background-color .2s, border-color .2s;
}
.icon-btn:hover { background: var(--surface); border-color: var(--border-strong); }

/* =========================================================
   Nav
   ========================================================= */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav__inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
/* Scroll-to-top pill: hidden at the top of the page, fades in once the user scrolls */
.nav__top {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  height: 40px;
  padding: 0 1rem 0 .85rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: .85rem;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 6px 18px rgba(139, 92, 246, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity .25s ease, transform .25s ease, visibility 0s linear .25s;
}
.nav__top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity .25s ease, transform .25s ease, visibility 0s;
}
.nav__top:hover { transform: translateY(-2px); }
.nav__top span { font-size: 1rem; line-height: 1; }
.nav__links {
  display: flex;
  gap: .25rem;
}
.nav__links a {
  padding: .5rem .85rem;
  border-radius: 10px;
  font-size: .95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color .2s, background-color .2s;
}
.nav__links a:hover { color: var(--text); background: var(--surface); }
.nav__links a.is-active { color: var(--text); background: var(--accent-soft); }

.nav__actions { display: flex; align-items: center; gap: .6rem; }
.nav__cta { padding: .6rem 1.1rem; font-size: .9rem; }

/* theme toggle icons */
#theme-toggle .icon-sun { display: none; }
#theme-toggle .icon-moon { display: block; }
:root[data-theme="light"] #theme-toggle .icon-sun { display: block; }
:root[data-theme="light"] #theme-toggle .icon-moon { display: none; }

/* burger (mobile only) */
.nav__burger { display: none; flex-direction: column; gap: 5px; }
.nav__burger span {
  width: 18px; height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform .25s, opacity .2s;
}
.nav__burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =========================================================
   Hero
   ========================================================= */
.hero {
  position: relative;
  overflow: hidden;
  padding: clamp(4rem, 9vw, 7.5rem) 0 clamp(4rem, 8vw, 6.5rem);
}
.hero__glow {
  position: absolute;
  inset: -20% -10% auto -10%;
  height: 70%;
  background:
    radial-gradient(40% 50% at 20% 30%, rgba(139, 92, 246, 0.28), transparent 70%),
    radial-gradient(35% 45% at 80% 20%, rgba(34, 211, 238, 0.18), transparent 70%);
  filter: blur(40px);
  pointer-events: none;
}
.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .4rem .9rem .4rem .6rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  font-size: .85rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.18);
}

.hero__title {
  font-size: clamp(2.1rem, 4.2vw, 3.2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  text-wrap: balance;
}
.hero__lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 34rem;
  margin-bottom: 2rem;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: .75rem; margin-bottom: 2.5rem; }

.hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1.25rem;
  max-width: 36rem;
}
.hero__stats li { display: flex; flex-direction: column; }
.hero__stats strong { font-size: 1.6rem; font-weight: 800; letter-spacing: -0.02em; }
.hero__stats span { font-size: .82rem; color: var(--text-muted); line-height: 1.35; }

/* ---- Decorative app mock ---- */
.hero__visual { position: relative; }
.app-mock {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  transform: perspective(1200px) rotateY(-8deg) rotateX(3deg);
  transition: transform .5s ease;
}
.hero__visual:hover .app-mock { transform: perspective(1200px) rotateY(-4deg) rotateX(1deg); }

.app-mock__bar {
  display: flex; align-items: center; gap: 6px;
  padding: .7rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface-2);
}
.app-mock__bar span { width: 10px; height: 10px; border-radius: 50%; background: var(--border-strong); }
.app-mock__bar em { margin-left: .5rem; font-style: normal; font-size: .75rem; color: var(--text-faint); }

.app-mock__body { display: grid; grid-template-columns: 52px 1fr; min-height: 260px; }
.app-mock__side {
  border-right: 1px solid var(--border);
  padding: .9rem .7rem;
  display: flex; flex-direction: column; gap: .7rem;
}
.app-mock__side i { display: block; height: 22px; border-radius: 7px; background: var(--surface-2); }
.app-mock__side i.active { background: var(--accent); }

.app-mock__main { padding: 1rem 1.1rem; }
.app-mock__kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: .6rem; margin-bottom: 1rem; }
.app-mock__kpis > div {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: .55rem .7rem;
}
.app-mock__kpis small { display: block; font-size: .65rem; color: var(--text-faint); }
.app-mock__kpis b { font-size: 1.05rem; }
.app-mock__kpis b.ok { color: var(--ok); }
.app-mock__kpis b.warn { color: var(--warn); }

.app-mock__rows { display: flex; flex-direction: column; gap: .55rem; }
.app-mock__rows > div {
  display: flex; align-items: center; justify-content: space-between; gap: .75rem;
  padding: .5rem .6rem;
  border-radius: 8px;
  background: var(--surface-2);
}
.app-mock__rows span { display: block; height: 8px; border-radius: 4px; background: var(--border-strong); }
.app-mock__rows u {
  display: block; width: 34px; height: 8px; border-radius: 4px; text-decoration: none;
  background: var(--border-strong);
}
.app-mock__rows u.ok { background: var(--ok); }
.app-mock__rows u.warn { background: var(--warn); }

.float-chip {
  position: absolute;
  padding: .45rem .8rem;
  border-radius: 999px;
  font-size: .8rem;
  font-weight: 600;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-sm);
  animation: float 6s ease-in-out infinite;
}
.chip-1 { top: -14px; right: 6%; animation-delay: 0s; }
.chip-2 { bottom: 14%; left: -18px; animation-delay: -2s; }
.chip-3 { bottom: -14px; right: 18%; animation-delay: -4s; }

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* =========================================================
   Sections
   ========================================================= */
.section { padding: clamp(3.5rem, 7vw, 6rem) 0; }
.section--alt { background: var(--bg-alt); border-block: 1px solid var(--border); }

.section__head { max-width: 40rem; margin-bottom: 2.5rem; }
.section__label {
  display: inline-block;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: .75rem;
}
.section__sub { color: var(--text-muted); margin-top: .75rem; margin-bottom: 0; }

/* =========================================================
   About
   ========================================================= */
.about {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2.5rem;
  align-items: start;
}
.about__text p { font-size: 1.05rem; color: var(--text-muted); }
.about__text p:first-child { color: var(--text); }

.about__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
}

/* Photo with gradient frame; falls back to initials if the image is missing */
.about__photo {
  position: relative;
  aspect-ratio: 1;
  border-radius: 16px;
  overflow: hidden;
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.about__photo img { width: 100%; height: 100%; object-fit: cover; object-position: center top; }
.about__initials {
  display: none;
  position: absolute; inset: 0;
  place-items: center;
  font-size: 4rem; font-weight: 800; letter-spacing: -0.04em;
  color: #fff;
}
.about__photo.is-fallback img { display: none; }
.about__photo.is-fallback .about__initials { display: grid; }

.about__facts { display: flex; flex-direction: column; gap: 1rem; }
.about__facts li { display: flex; gap: .85rem; align-items: center; }
.about__facts li > span {
  display: grid; place-items: center;
  width: 40px; height: 40px;
  border-radius: 12px;
  background: var(--surface-2);
  font-size: 1.1rem;
  flex-shrink: 0;
}
.about__facts small { display: block; font-size: .75rem; color: var(--text-faint); }
.about__facts b { font-weight: 600; font-size: .92rem; line-height: 1.35; display: block; }

/* =========================================================
   Skills
   ========================================================= */
/* Full-platform block: one card per product, each marked as live in production */
.platform {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}
.platform__item {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.5rem 1.35rem;
  transition: border-color .2s, transform .2s;
}
.platform__item::before {
  content: "";
  position: absolute; left: 0; top: 0; right: 0;
  height: 3px;
  background: var(--c);
}
.platform__item:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.platform__item h3 { display: flex; align-items: center; gap: .55rem; font-size: 1.05rem; margin-bottom: .6rem; }
.platform__item h3::before {
  content: ""; width: 10px; height: 10px; border-radius: 3px; background: var(--c); flex-shrink: 0;
}
.platform__item p { color: var(--text-muted); font-size: .92rem; margin-bottom: .9rem; }
.platform__live {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .78rem; font-weight: 600; color: var(--ok);
}
.platform__live::before {
  content: ""; width: 8px; height: 8px; border-radius: 50%;
  background: var(--ok); box-shadow: 0 0 0 3px rgba(52, 211, 153, 0.18);
}

.skills {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}
.skill-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: border-color .2s, transform .2s;
}
.skill-group:hover { border-color: var(--border-strong); transform: translateY(-3px); }
.skill-group h3 { display: flex; align-items: center; gap: .6rem; margin-bottom: 1.1rem; font-size: 1.05rem; }
.skill-group__icon { color: var(--c); font-size: .8rem; }

.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chips li {
  padding: .4rem .75rem;
  border-radius: 999px;
  font-size: .85rem;
  font-weight: 500;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
}

/* =========================================================
   Projects
   ========================================================= */
.projects { display: grid; gap: 1.5rem; }

.project {
  display: grid;
  grid-template-columns: 300px 1fr;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color .2s, transform .2s, box-shadow .2s;
}
.project:hover { border-color: var(--border-strong); transform: translateY(-3px); box-shadow: var(--shadow); }

.project__media {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 220px;
  background:
    radial-gradient(70% 70% at 30% 30%, color-mix(in srgb, var(--tint) 45%, transparent), transparent 70%),
    linear-gradient(160deg, color-mix(in srgb, var(--tint) 22%, var(--surface-2)), var(--surface-2));
  border-right: 1px solid var(--border);
}
.project__emoji { font-size: 3.5rem; filter: drop-shadow(0 8px 20px rgba(0,0,0,.3)); }

.project__body { padding: 1.6rem 1.8rem; }
.project__body h3 { font-size: 1.35rem; margin: .6rem 0 .6rem; }
.project__body h3 a:hover { color: var(--accent); }
.project__top { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; }
.project__blurb { color: var(--text-muted); margin: 0 0 1.1rem; }
.project__stats { display: flex; flex-wrap: wrap; gap: .75rem 1.75rem; margin-bottom: 1.1rem; }
.project__stats li { display: flex; flex-direction: column; }
.project__stats strong { font-size: 1.15rem; font-weight: 800; letter-spacing: -0.02em; }
.project__stats span { font-size: .78rem; color: var(--text-faint); line-height: 1.3; }
.project__link { display: inline-flex; align-items: center; gap: .35rem; font-weight: 600; font-size: .95rem; color: var(--accent); }
.project__link:hover { gap: .6rem; }
:root[data-theme="light"] .project__link { color: #6d3df0; }

.status-pill {
  display: inline-flex; align-items: center; gap: .45rem;
  padding: .3rem .7rem; border-radius: 999px;
  font-size: .76rem; font-weight: 600; white-space: nowrap;
  background: var(--surface-2); border: 1px solid var(--border-strong); color: var(--text);
}
.status-pill::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--ok); }
.status-pill.is-progress::before { background: var(--warn); }
.status-pill.is-planned::before { background: var(--accent-2); }

.tags { display: flex; flex-wrap: wrap; gap: .4rem; }
.tags li {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  padding: .3rem .6rem;
  border-radius: 6px;
  background: var(--accent-soft);
  color: var(--accent);
}
:root[data-theme="light"] .tags li { color: #6d3df0; }

.case { display: grid; grid-template-columns: 80px 1fr; gap: .5rem 1rem; margin: 0; }
.case dt { font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; color: var(--text-faint); padding-top: .15rem; }
.case dd { margin: 0; color: var(--text-muted); font-size: .95rem; }
.case dd:last-child { color: var(--text); font-weight: 500; }

/* =========================================================
   Experience / timeline
   ========================================================= */
.timeline { position: relative; display: grid; gap: 1.75rem; margin-bottom: 3.5rem; }
.timeline__item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 1.5rem;
  position: relative;
}
.timeline__item::before {
  content: "";
  position: absolute;
  left: 160px; top: 0; bottom: -1.75rem;
  width: 1px;
  background: var(--border-strong);
  transform: translateX(-1.5rem);
}
.timeline__item:last-child::before { bottom: 0; }
.timeline__item::after {
  content: "";
  position: absolute;
  left: 160px; top: 1.55rem;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
  transform: translateX(calc(-1.5rem - 5px));
}
.timeline__date { font-size: .9rem; font-weight: 600; color: var(--text-muted); padding-top: 1.3rem; display: block; }

.timeline__card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.6rem;
}
.timeline__org { color: var(--text-muted); font-size: .95rem; margin: .2rem 0 .9rem; }
.timeline__card ul { display: grid; gap: .45rem; }
.timeline__card li { position: relative; padding-left: 1.1rem; color: var(--text-muted); font-size: .95rem; }
.timeline__card li::before {
  content: ""; position: absolute; left: 0; top: .6em;
  width: 6px; height: 6px; border-radius: 50%; background: var(--accent);
}

/* Multiple roles at one employer */
.roles { display: grid; gap: 1.1rem; margin-top: 1.1rem; }
.role { padding-left: 1rem; border-left: 2px solid var(--border-strong); }
.role h4 { margin: 0; font-size: 1rem; font-weight: 600; line-height: 1.3; }
.role__dates { display: block; font-size: .82rem; color: var(--text-faint); margin-top: .1rem; }
.role p { margin: .4rem 0 0; color: var(--text-muted); font-size: .95rem; }
.role ul { margin-top: .6rem; }
.role li { font-size: .92rem; }
.roles .role:first-child { border-left-color: var(--accent); }

/* Education + certifications side by side */
.credentials { display: grid; grid-template-columns: 1fr 1.7fr; gap: 2rem; align-items: start; }
.credentials h3 { margin-bottom: 1rem; }

.edu-list { display: grid; gap: 1rem; }
.edu {
  display: flex; align-items: center; gap: .9rem;
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.edu__icon {
  display: grid; place-items: center; flex-shrink: 0;
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--surface-2); font-size: 1.2rem;
}
.edu b { display: block; font-size: .9rem; font-weight: 600; line-height: 1.3; }
.edu small { color: var(--text-faint); font-size: .78rem; }

.cert-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 1rem; }
.cert {
  display: flex; align-items: center; gap: .9rem;
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.cert__badge {
  display: grid; place-items: center; text-align: center;
  flex-shrink: 0;
  min-width: 60px; height: 44px; padding: 0 .55rem;
  border-radius: 10px;
  font-size: .7rem; font-weight: 800; letter-spacing: .03em; line-height: 1.1;
  color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}
.cert b { display: block; font-size: .9rem; font-weight: 600; line-height: 1.3; }
.cert small { color: var(--text-faint); font-size: .75rem; }

/* =========================================================
   Contact
   ========================================================= */
.contact {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: clamp(2.5rem, 6vw, 4.5rem) 1.5rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: calc(var(--radius-lg) + 6px);
}
.contact__glow {
  position: absolute; inset: 0;
  background:
    radial-gradient(45% 60% at 50% 0%, rgba(139, 92, 246, 0.22), transparent 70%);
  pointer-events: none;
}
.contact > * { position: relative; }
.contact h2 { margin-bottom: 1rem; }
.contact__lead { color: var(--text-muted); max-width: 32rem; margin: 0 auto 1.75rem; }
.contact__actions { display: flex; flex-wrap: wrap; justify-content: center; gap: .75rem; }

/* =========================================================
   Case-study pages
   ========================================================= */
.case-hero {
  position: relative; overflow: hidden;
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(2.5rem, 5vw, 3.5rem);
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}
.case-hero .hero__glow { height: 120%; opacity: .7; }
.case-hero__inner { position: relative; }
.back-link {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .9rem; font-weight: 500; color: var(--text-muted);
  margin-bottom: 1.75rem;
}
.back-link:hover { color: var(--text); }
.case-hero__top { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1rem; margin-bottom: 1rem; }
.case-hero h1 {
  font-size: clamp(1.9rem, 4.2vw, 2.9rem); font-weight: 800; letter-spacing: -0.03em;
  margin: 0 0 .5rem; max-width: 46rem; text-wrap: balance;
}
.case-hero__sub { font-size: 1.05rem; color: var(--text-muted); margin-bottom: 1.25rem; max-width: 44rem; }
.case-hero__lead { font-size: 1.1rem; color: var(--text); max-width: 46rem; margin-bottom: 0; }

.meta-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 1.1rem 1.5rem;
  margin: 2rem 0 0; padding: 1.25rem 1.5rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
}
.meta-grid dt { font-size: .7rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--text-faint); margin-bottom: .3rem; }
.meta-grid dd { margin: 0; font-size: .92rem; font-weight: 500; line-height: 1.45; }
.meta-grid .meta--wide { grid-column: 1 / -1; }

.case-body { padding: clamp(2.5rem, 6vw, 4.5rem) 0; }
.case-body__grid { display: grid; grid-template-columns: 210px 1fr; gap: 3.5rem; align-items: start; }
.case-toc { position: sticky; top: calc(var(--nav-h) + 1.5rem); }
.case-toc h4 { margin: 0 0 .75rem; font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--text-faint); }
.case-toc a {
  display: block; padding: .4rem .8rem; border-left: 2px solid var(--border);
  font-size: .88rem; color: var(--text-muted); transition: color .2s, border-color .2s;
}
.case-toc a:hover, .case-toc a.is-active { color: var(--text); border-left-color: var(--accent); }

.prose { max-width: 46rem; min-width: 0; }
.prose h2 { font-size: 1.5rem; margin: 2.75rem 0 1rem; scroll-margin-top: calc(var(--nav-h) + 1.5rem); }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: 1.1rem; margin: 1.75rem 0 .6rem; }
.prose p { color: var(--text-muted); font-size: 1.02rem; }
.prose p.lead { color: var(--text); font-size: 1.08rem; }
.prose strong { color: var(--text); font-weight: 600; }
.prose ul { display: grid; gap: .55rem; margin: 0 0 1.25rem; }
.prose li { position: relative; padding-left: 1.2rem; color: var(--text-muted); font-size: 1rem; }
.prose li::before { content: ""; position: absolute; left: 0; top: .65em; width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.prose blockquote {
  margin: 1.5rem 0; padding: 1rem 1.25rem;
  border-left: 3px solid var(--accent); background: var(--surface);
  border-radius: 0 var(--radius) var(--radius) 0; color: var(--text); font-style: italic;
}
.prose blockquote p { margin: 0; color: var(--text); }

.impact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1rem; margin: 1.25rem 0 1.5rem; }
.impact { padding: 1rem 1.1rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.impact strong {
  display: block; font-size: 1.5rem; font-weight: 800; letter-spacing: -0.02em;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.impact span { font-size: .82rem; color: var(--text-muted); line-height: 1.35; display: block; }

.decision { padding: 1.1rem 1.25rem; margin-bottom: .9rem; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.decision h4 { margin: 0 0 .45rem; font-size: 1rem; }
.decision p { margin: 0; font-size: .95rem; }
.decision p + p { margin-top: .5rem; }

.coming-soon {
  padding: 2rem; text-align: center;
  border: 1px dashed var(--border-strong); border-radius: var(--radius-lg);
  color: var(--text-muted);
}

.case-next { padding: 0 0 clamp(3rem, 6vw, 5rem); }
.case-next h3 { margin-bottom: 1rem; }
.next-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 1rem; }
.next-card {
  display: block; padding: 1.1rem 1.25rem;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  transition: border-color .2s, transform .2s;
}
.next-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.next-card small { display: block; font-size: .72rem; color: var(--text-faint); text-transform: uppercase; letter-spacing: .06em; margin-bottom: .3rem; }
.next-card b { font-size: .95rem; font-weight: 600; }

/* =========================================================
   Footer
   ========================================================= */
.footer { border-top: 1px solid var(--border); padding: 1.75rem 0; font-size: .9rem; color: var(--text-muted); }
.footer__inner { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 1rem; }
.footer__links { display: flex; gap: 1.25rem; }
.footer__links a:hover { color: var(--text); }

/* =========================================================
   Scroll reveal
   ========================================================= */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .float-chip { animation: none; }
  .app-mock { transform: none; }
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 960px) {
  .hero__inner { grid-template-columns: 1fr; gap: 3.5rem; }
  .hero__visual { max-width: 520px; margin-inline: auto; width: 100%; }
  .about { grid-template-columns: 1fr; }
  .about__card { display: grid; grid-template-columns: 200px 1fr; gap: 1.5rem; align-items: center; }
  .about__photo { margin-bottom: 0; }
  .skills { grid-template-columns: 1fr 1fr; }
  .platform { grid-template-columns: 1fr 1fr; }
  .credentials { grid-template-columns: 1fr; }
  .cert-list { grid-template-columns: 1fr 1fr; }
  .project { grid-template-columns: 1fr; }
  .project__media { min-height: 150px; border-right: 0; border-bottom: 1px solid var(--border); }
  .case-body__grid { grid-template-columns: 1fr; gap: 2rem; }
  .case-toc { position: static; display: flex; flex-wrap: wrap; gap: .25rem; }
  .case-toc h4 { width: 100%; }
  .case-toc a { border-left: 0; border: 1px solid var(--border); border-radius: 999px; padding: .35rem .8rem; }
  .case-toc a.is-active { border-color: var(--accent); }
  .next-grid { grid-template-columns: 1fr; }
}

@media (max-width: 720px) {
  .nav__links {
    position: fixed;
    top: var(--nav-h); left: 0; right: 0;
    flex-direction: column;
    padding: .75rem;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity .2s, transform .2s;
  }
  .nav__links.is-open { opacity: 1; transform: none; pointer-events: auto; }
  .nav__links a { padding: .8rem 1rem; }
  .nav__cta { display: none; }
  .nav__burger { display: inline-flex; }

  .skills { grid-template-columns: 1fr; }
  .platform { grid-template-columns: 1fr; }
  .cert-list { grid-template-columns: 1fr; }
  .case { grid-template-columns: 1fr; gap: .15rem .5rem; }
  .case dt { margin-top: .6rem; }
  .timeline__item { grid-template-columns: 1fr; gap: .4rem; padding-left: 1.75rem; }
  .timeline__item::before { left: 0; transform: none; }
  .timeline__item::after { left: 0; transform: translateX(-5px); top: .4rem; }
  .timeline__date { padding-top: 0; }
  .hero__stats { grid-template-columns: 1fr 1fr; }
  .float-chip { display: none; }
}