/* Dark-themed portfolio for Brian Nzuki */
:root {
  --bg: hsl(222 47% 11%);
  --card: hsl(222 47% 15%);
  --muted: hsl(222 20% 70%);
  --text: hsl(210 30% 95%);
  --accent: hsl(262 83% 58%);
  --accent-2: hsl(217 91% 60%);
  --accent-3: hsl(327 85% 65%);
  --glass: rgba(255, 255, 255, 0.04);
  --glass-nav: rgba(255, 255, 255, 0.08);
  --radius: 12px;
  --transition: 280ms cubic-bezier(.2, .9, .3, 1);
  --navbar-height: 88px;
}

* {
  box-sizing: border-box
}

html,
body {
  height: 100%
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, 'Segoe UI', Roboto;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  padding-top: var(--navbar-height);
}

/* layout */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.25rem
}

.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.03));
  padding: 1rem;
  border-radius: var(--radius);
  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.03)
}

.site-header {
  position: fixed;
  left: 0;
  right: 0;
  top: 0;
  z-index: 60;
  padding: .6rem 0;
  backdrop-filter: blur(20px);
  background: linear-gradient(180deg, var(--glass-nav), rgba(255, 255, 255, 0.02));
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.site-header.scrolled {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.04));
  backdrop-filter: blur(25px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem
}

.brand {
  font-weight: 800;
  text-decoration: none;
  color: var(--text);
  display: inline-flex;
  align-items: center
}

.page-hero .name-gradient {
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  background: linear-gradient(90deg, var(--accent-2), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  display: inline-block;
  margin-left: 0.25rem;
}

.name-gradient {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 800;
  font-size: 2.05rem;
}

.nav {
  display: flex;
  flex-direction: row;
  gap: 1rem;
  align-items: center;
  padding-left: 0;
  border-left: none;
  background: transparent;
  border-radius: 0;
  max-width: none;
  margin: 0;
}

.nav a {
  color: var(--accent-2);
  text-decoration: none;
  padding: .75rem 1rem;
  border-radius: 12px;
  position: relative;
  transition: all var(--transition);
  font-weight: 600;
  display: block;
  font-size: 1.1rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  box-shadow: 0 4px 15px rgba(138, 43, 226, 0.1);
}

.nav a:hover {
  color: var(--text);
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 8px 25px rgba(138, 43, 226, 0.3);
  transform: translateX(6px);
}

.nav a::after {
  content: "";
  position: absolute;
  left: 15%;
  right: 15%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  bottom: 8px;
  transition: all 280ms cubic-bezier(.2, .9, .3, 1);
  border-radius: 2px;
  transform: scaleX(0);
  opacity: 0;
}

.nav a:hover::after {
  transform: scaleX(1);
  opacity: 1;
}

.nav a.active {
  color: var(--text);
  background: linear-gradient(135deg, rgba(138, 43, 226, 0.15), rgba(59, 130, 246, 0.15));
  box-shadow: 0 4px 15px rgba(138, 43, 226, 0.1);
}

.nav a.active::after {
  transform: scaleX(1);
  opacity: 1;
}

.hamburger {
  display: none;
  background: transparent;
  border: 0;
  color: var(--text);
  font-size: 1.25rem;
  cursor: pointer
}

/* Mobile Navigation */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: linear-gradient(135deg, rgba(2, 6, 23, 0.98), rgba(13, 14, 33, 0.95));
  backdrop-filter: blur(30px);
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
}

.mobile-nav.open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-content {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: 2rem;
  max-width: 320px;
  margin: 0 auto;
}

.mobile-nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: 2rem;
}

.close-mobile-nav {
  background: transparent;
  border: 0;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  transition: all var(--transition);
}

.close-mobile-nav:hover {
  background: rgba(255, 255, 255, 0.1);
}

.mobile-nav-links {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mobile-nav-link {
  color: var(--text);
  text-decoration: none;
  padding: 1rem 1.5rem;
  border-radius: 16px;
  transition: all var(--transition);
  font-weight: 500;
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.mobile-nav-link:hover {
  background: linear-gradient(135deg, rgba(138, 43, 226, 0.15), rgba(59, 130, 246, 0.15));
  transform: translateX(12px);
  box-shadow: 0 8px 25px rgba(138, 43, 226, 0.1);
}

.mobile-nav-link.active {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0b0810;
  box-shadow: 0 8px 25px rgba(138, 43, 226, 0.2);
}

.mobile-nav-footer {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-nav-contact {
  color: var(--muted);
  text-decoration: none;
  padding: 0.5rem 0;
  transition: all var(--transition);
}

.mobile-nav-contact:hover {
  color: var(--text);
}

/* hero */
.full {
  min-height: 100vh;
  display: grid;
  place-items: center;
  position: relative;
  overflow: hidden
}

/* Social Links inside card with inline links separated by bullets */
.card h3 {
  font-weight: 700;
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--accent-2);
}

.card p {
  color: var(--muted);
  font-size: 1rem;
  margin: 0;
}

.card p a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition);
}

.card p a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.card p a + a::before {
  content: " • ";
  color: var(--muted);
  padding: 0 0.3rem;
  user-select: none;
}

/* Footer Quick Links, Contact, and Social Columns */
.quick-links,
.contact-col,
.social-col {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.quick-links h4,
.contact-col h4,
.social-col h4 {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.quick-links a,
.social-col a {
  color: var(--muted);
  text-decoration: none;
  transition: color var(--transition);
  font-weight: 500;
}

.quick-links a:hover,
.social-col a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.contact-col p {
  color: var(--muted);
  margin: 0;
  font-weight: 400;
  font-size: 0.95rem;
}

.contact-col p:not(:last-child) {
  margin-bottom: 0.5rem;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(2, 6, 23, 0.3), rgba(2, 6, 23, 0.6));
  mix-blend-mode: multiply;
  pointer-events: none
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .8rem
}

.profile {
  width: 128px;
  height: 128px;
  border-radius: 50%;
  border: 4px solid var(--accent);
  box-shadow: 0 10px 30px rgba(255, 77, 0, 0.15), 0 6px 18px rgba(0, 0, 0, 0.6)
}

/* headings and ctas */
h1 {
  font-size: 2rem;
  margin: .25rem 0
}

.subtitle {
  color: var(--muted);
  max-width: 760px
}

.cta-group {
  display: flex;
  gap: .75rem;
  margin-top: .6rem
}

.btn {
  display: inline-block;
  padding: .6rem 1rem;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  border: 1px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition)
}

.btn.primary {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #0b0810;
  box-shadow: 0 10px 30px rgba(255, 77, 0, 0.12);
  position: relative;
  overflow: hidden;
}

.btn.primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.btn.primary:hover::before {
  left: 100%;
}

.btn.outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text);
  position: relative;
  overflow: hidden;
}

.btn.outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

/* stats */
.stats {
  padding: 2rem 0
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem
}

.stat {
  padding: 1.2rem;
  border-radius: 12px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition)
}

.stat:hover {
  transform: translateY(-8px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6)
}

.card {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.03));
  padding: 1rem;
  border-radius: var(--radius);
  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.03);
  transition: all var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8);
  border-color: rgba(255, 255, 255, 0.08);
}

/* final cta */
.final-cta {
  padding: 2rem 0;
  text-align: center
}

/* footer */
.site-footer {
  padding: 2rem 0;
  margin-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.03);
  position: relative
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 1rem;
  align-items: start
}

.brand-footer {
  font-weight: 800
}

/* about */
.bio-grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 1rem;
  align-items: start;
  margin: 1rem 0
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: .5rem;
  margin-top: 1rem
}

.badge {
  display: inline-block;
  padding: .2rem .5rem;
  border-radius: 10px;
  font-size: .8rem;
  margin-left: .5rem;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text)
}

.badge.current {
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #0b0810
}

.tech-grid {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: .75rem
}

.tech {
  background: rgba(255, 255, 255, 0.02);
  padding: .4rem .6rem;
  border-radius: 8px
}

/* skills */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem
}

.skill .bar {
  height: 14px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 999px;
  overflow: hidden;
  margin: .5rem 0
}

.bar-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 900ms cubic-bezier(.2, .9, .3, 1)
}

/* services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1rem
}

/* projects */
.project-feature {
  margin: 1rem 0
}

.project .project-meta h3 {
  margin: 0 0 .5rem 0
}

.badge.in-progress {
  background: rgba(30, 30, 30, 0.4);
  color: var(--text)
}

/* contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 1rem
}

.contact-form label {
  display: block;
  margin-bottom: .6rem;
  font-size: .95rem
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: .6rem;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.03);
  background: transparent;
  color: var(--text)
}

/* animations and responsive */
[data-animate] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 420ms ease, transform 420ms ease
}

[data-animate].in-view {
  opacity: 1;
  transform: none
}

@media(max-width:900px) {
  .nav {
    display: none
  }

  .hamburger {
    display: inline-block
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr
  }

  .bio-grid {
    grid-template-columns: 1fr
  }

  .stats-grid {
    grid-template-columns: 1fr
  }

  .skills-grid {
    grid-template-columns: 1fr
  }

  .contact-grid {
    grid-template-columns: 1fr
  }
}

.toast {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #0b0810;
  padding: .6rem 1rem;
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(255, 77, 0, 0.12);
  display: none
}

.muted {
  color: var(--muted)
}

.center {
  text-align: center
}

/* Enhanced Focus States for Accessibility */
*:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

button:focus,
a:focus,
input:focus,
textarea:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Loading Animation */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

[data-animate] {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 420ms ease, transform 420ms ease;
  animation: fadeInUp 0.6s ease forwards;
}

[data-animate].in-view {
  opacity: 1;
  transform: none;
}

/* Enhanced Profile Image */
.profile {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 4px solid var(--accent);
  box-shadow: 0 10px 30px rgba(255, 77, 0, 0.15), 0 6px 18px rgba(0, 0, 0, 0.6);
  transition: all var(--transition);
  position: relative;
}

.profile:hover {
  transform: scale(1.05);
  box-shadow: 0 15px 40px rgba(255, 77, 0, 0.2), 0 10px 25px rgba(0, 0, 0, 0.8);
}

/* Improved Navigation Hover Effects */
.nav a {
  color: var(--muted);
  text-decoration: none;
  padding: .45rem .6rem;
  border-radius: 8px;
  position: relative;
  transition: all var(--transition);
}

.nav a:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.nav a::after {
  content: "";
  position: absolute;
  left: 10%;
  right: 10%;
  height: 2px;
  background: transparent;
  bottom: 6px;
  transition: all 220ms ease;
  border-radius: 2px;
}

.nav a:hover::after {
  background: var(--accent);
}

.nav a.active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.08);
}

.nav a.active::after {
  background: var(--accent);
}