/*
 * Copyright (c) KAKEL ENTERPRISES LLC. All rights reserved.
 * asimbahwe.me — personal site for Gratien Asimbahwe
 */

:root {
  --bg: #07090f;
  --bg-2: #0c111c;
  --bg-3: #111729;
  --fg: #e7ecf5;
  --fg-muted: #9aa4b8;
  --fg-dim: #5e6779;
  --border: #1e2638;
  --accent: #5eead4;
  --accent-2: #38bdf8;
  --accent-soft: rgba(94, 234, 212, 0.12);
  --maxw: 1120px;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
  --transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, monospace;
}

[data-theme='light'] {
  --bg: #f6f8fc;
  --bg-2: #ffffff;
  --bg-3: #eef2f9;
  --fg: #0c111c;
  --fg-muted: #475066;
  --fg-dim: #6b7388;
  --border: #dee4ef;
  --accent: #0d9488;
  --accent-2: #0369a1;
  --accent-soft: rgba(13, 148, 136, 0.10);
  --shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--transition), color var(--transition);
}

a { color: inherit; text-decoration: none; }

img { max-width: 100%; display: block; }

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 12px 16px;
  background: var(--accent);
  color: #000;
  z-index: 100;
}
.skip-link:focus { left: 16px; top: 16px; }

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 16px;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 0 24px;
  margin: 16px auto 0;
  max-width: var(--maxw);
  transition: margin var(--transition);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 8px 8px 8px 18px;
  background: color-mix(in srgb, var(--bg-2) 78%, transparent);
  border: 1px solid var(--border);
  border-radius: 999px;
  backdrop-filter: saturate(160%) blur(18px);
  -webkit-backdrop-filter: saturate(160%) blur(18px);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
  transition: box-shadow var(--transition), transform var(--transition);
}
.nav.scrolled .nav-inner {
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.32);
}
[data-theme='light'] .nav-inner {
  box-shadow: 0 6px 24px rgba(15, 23, 42, 0.08);
}
[data-theme='light'] .nav.scrolled .nav-inner {
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.14);
}

.nav-links {
  display: flex;
  gap: 2px;
  font-size: 14px;
  color: var(--fg-muted);
  font-weight: 500;
}
.nav-links a {
  position: relative;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--fg-muted);
  transition: color var(--transition), background var(--transition);
}
.nav-links a::before {
  content: '';
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transform: translateX(-50%);
  transition: width 240ms cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-links a:hover {
  color: var(--fg);
  background: var(--accent-soft);
}
.nav-links a:hover::before { width: 18px; }
.nav-links a.is-active {
  color: var(--fg);
  background: var(--accent-soft);
}
.nav-links a.is-active::before { width: 18px; }

.nav-toggles { display: flex; gap: 6px; }
.toggle {
  display: inline-grid;
  place-items: center;
  min-width: 36px;
  height: 36px;
  padding: 0 12px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 999px;
  color: var(--fg-muted);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all var(--transition);
}
.toggle:hover {
  color: var(--accent);
  background: var(--accent-soft);
  border-color: color-mix(in srgb, var(--accent) 30%, transparent);
}

.icon-sun { display: none; }
[data-theme='light'] .icon-sun { display: block; }
[data-theme='light'] .icon-moon { display: none; }

@media (max-width: 720px) {
  .nav { top: 10px; margin-top: 10px; padding: 0 12px; }
  .nav-inner { padding: 6px; }
  .nav-links { display: none; }
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  padding: 120px 0 110px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(60% 60% at 80% 0%, color-mix(in srgb, var(--accent) 22%, transparent) 0%, transparent 60%),
    radial-gradient(50% 50% at 10% 30%, color-mix(in srgb, var(--accent-2) 18%, transparent) 0%, transparent 60%);
  pointer-events: none;
  filter: blur(2px);
}
[data-theme='light'] .hero-bg {
  background:
    radial-gradient(60% 60% at 80% 0%, color-mix(in srgb, var(--accent) 16%, transparent) 0%, transparent 60%),
    radial-gradient(50% 50% at 10% 30%, color-mix(in srgb, var(--accent-2) 12%, transparent) 0%, transparent 60%);
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 56px;
  align-items: center;
}
@media (max-width: 880px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
}

.hero-portrait-wrap {
  position: relative;
  width: 100%;
  max-width: 460px;
  margin-inline: auto;
  aspect-ratio: 1 / 1;
  isolation: isolate;
}
.hero-portrait-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 36% 64% 50% 50% / 56% 44% 56% 44%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  transform: translate(22px, 24px) rotate(-2deg);
  opacity: 0.55;
  filter: blur(0.5px);
  z-index: -1;
}
.hero-portrait-wrap::after {
  content: '';
  position: absolute;
  inset: -8px;
  border-radius: 36% 64% 50% 50% / 56% 44% 56% 44%;
  border: 1px dashed color-mix(in srgb, var(--accent) 35%, transparent);
  opacity: 0.6;
  z-index: -1;
  pointer-events: none;
}
.hero-portrait {
  position: relative;
  margin: 0;
  width: 100%;
  height: 100%;
  border-radius: 36% 64% 50% 50% / 56% 44% 56% 44%;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-2);
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.45);
  transition: transform 600ms cubic-bezier(0.4, 0, 0.2, 1);
}
.hero-portrait:hover { transform: translateY(-3px); }
.hero-portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 65% 35%;
  display: block;
}
.hero-portrait .glaze {
  position: absolute;
  inset: 0;
  background: linear-gradient(150deg, color-mix(in srgb, var(--accent) 14%, transparent), transparent 55%);
  pointer-events: none;
}
[data-theme='light'] .hero-portrait {
  box-shadow: 0 24px 50px rgba(15, 23, 42, 0.18);
}
[data-theme='light'] .hero-portrait-wrap::before {
  opacity: 0.35;
}
@media (max-width: 880px) {
  .hero-portrait-wrap { max-width: 380px; }
  .hero-portrait-wrap::before { transform: translate(14px, 16px) rotate(-2deg); }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  margin: 0 0 28px;
}

.hero-title {
  margin: 0 0 24px;
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}
.hero-title .accent {
  display: block;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-sub {
  max-width: 720px;
  font-size: clamp(1rem, 1.5vw, 1.18rem);
  color: var(--fg-muted);
  margin: 0 0 36px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 56px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14px;
  border: 1px solid transparent;
  transition: all var(--transition);
  cursor: pointer;
}
.btn-primary {
  background: var(--fg);
  color: var(--bg);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: var(--shadow); }
.btn-ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--border);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.hero-meta {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  padding: 0;
  margin: 0;
  max-width: 640px;
}
.hero-meta li {
  display: flex;
  flex-direction: column;
  padding: 16px 18px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.hero-meta strong {
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-meta span {
  color: var(--fg-muted);
  font-size: 13px;
  margin-top: 4px;
}
@media (max-width: 640px) {
  .hero-meta { grid-template-columns: 1fr; }
}

/* ---------- sections ---------- */
.section {
  padding: 96px 0;
  border-top: 1px solid var(--border);
}
.section-alt { background: var(--bg-2); }

.section-label {
  display: inline-block;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
.section-title {
  margin: 0 0 16px;
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
}
.section-lede {
  max-width: 680px;
  color: var(--fg-muted);
  font-size: 1.05rem;
  margin: 0 0 40px;
}
.section-foot {
  margin: 32px 0 0;
}
.link-arrow {
  color: var(--accent);
  font-weight: 600;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
.link-arrow:hover { border-bottom-color: var(--accent); }

.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 64px;
  align-items: start;
}
@media (max-width: 820px) {
  .grid-2 { grid-template-columns: 1fr; gap: 24px; }
}
.prose p { color: var(--fg-muted); margin: 0 0 18px; }
.prose p:last-child { margin-bottom: 0; }

/* ---------- timeline ---------- */
.timeline {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  border-left: 1px solid var(--border);
}
.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 32px;
  padding: 22px 0 22px 28px;
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 30px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--bg-2);
}
.timeline-when {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-dim);
  white-space: nowrap;
}
.timeline-when span:first-child { color: var(--fg); font-weight: 500; }
.timeline-what h3 {
  margin: 0 0 4px;
  font-size: 1.15rem;
  font-weight: 700;
}
.timeline-what .role {
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  margin: 0 0 8px;
}
.timeline-what p:last-child {
  color: var(--fg-muted);
  margin: 0;
}
@media (max-width: 720px) {
  .timeline-item { grid-template-columns: 1fr; gap: 8px; }
}

/* ---------- education ---------- */
.edu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  margin-top: 28px;
}
@media (max-width: 820px) {
  .edu-grid { grid-template-columns: 1fr; gap: 32px; }
}
.edu-heading {
  margin: 0 0 18px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-dim);
}
.edu-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 18px;
}
.edu-list > li {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 20px;
  padding: 18px 20px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.edu-when {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-dim);
  white-space: nowrap;
  padding-top: 2px;
}
.edu-list h4 {
  margin: 0 0 4px;
  font-size: 1.02rem;
  font-weight: 700;
}
.edu-list .role {
  margin: 0 0 6px;
  font-size: 13px;
  font-weight: 500;
  color: var(--accent);
}
.edu-list p:last-child {
  margin: 0;
  color: var(--fg-muted);
  font-size: 0.92rem;
}
@media (max-width: 540px) {
  .edu-list > li { grid-template-columns: 1fr; gap: 6px; }
}

/* ---------- cards ---------- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}
.card {
  display: block;
  padding: 24px;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
  cursor: pointer;
}
[class~='section-alt'] .card { background: var(--bg-3); }
.card:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
  box-shadow: var(--shadow);
}
.card-static { cursor: default; }
.card-static:hover { transform: none; border-color: var(--border); box-shadow: none; }
.card-tag {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}
.card h3 {
  margin: 0 0 8px;
  font-size: 1.1rem;
  font-weight: 700;
}
.card p {
  margin: 0;
  color: var(--fg-muted);
  font-size: 0.95rem;
}

/* ---------- contact ---------- */
.contact-inner { text-align: center; }
.contact-inner .section-label,
.contact-inner .section-title,
.contact-inner .section-lede { margin-left: auto; margin-right: auto; }
.contact-actions {
  display: flex;
  justify-content: center;
  margin: 28px 0 28px;
}
.socials {
  list-style: none;
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  padding: 0;
  margin: 0;
}
.socials a {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-2);
  border: 1px solid var(--border);
  color: var(--fg-muted);
  transition: all var(--transition);
}
.socials a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
  background: var(--bg-2);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  color: var(--fg-dim);
  font-size: 13px;
}

/* ---------- reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 600ms ease, transform 600ms ease;
}
.reveal.in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}