/* ==========================================================================
   Emmanuel Sanni — Portfolio styles
   ========================================================================== */

/* ---- Layout helpers ---- */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-5), 5vw, var(--space-12));
}

.section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
  position: relative;
}

.section--tight {
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.section-label::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--color-primary);
  display: inline-block;
}

.section-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  max-width: 18ch;
  margin-bottom: var(--space-4);
}

.section-intro {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 58ch;
}

/* ---- Header / nav ---- */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 82%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition:
    transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

.header--hidden {
  transform: translateY(-100%);
}

.header--scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  height: 72px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.brand__mark {
  width: 36px;
  height: 36px;
  color: var(--color-primary);
  flex-shrink: 0;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-base);
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.brand__name span {
  display: block;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

.nav__links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  position: relative;
}

.nav__links a:hover {
  color: var(--color-text);
}

.nav__links a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 0;
  height: 1.5px;
  background: var(--color-primary);
  transition: width var(--transition-interactive);
}

.nav__links a:hover::after {
  width: 100%;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.theme-toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.nav__cta {
  display: none;
}

@media (min-width: 860px) {
  .nav__cta {
    display: inline-flex;
  }
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  text-decoration: none;
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.btn--primary:hover {
  background: var(--color-primary-hover);
}

.btn--ghost {
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn--ghost:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn .arrow {
  transition: transform var(--transition-interactive);
}

.btn:hover .arrow {
  transform: translateX(3px);
}

/* ---- Hero ---- */
.hero {
  position: relative;
  padding-top: clamp(var(--space-12), 7vw, var(--space-20));
  padding-bottom: clamp(var(--space-16), 10vw, var(--space-24));
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  color: var(--color-primary);
  opacity: 0.5;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  align-items: end;
}

@media (min-width: 920px) {
  .hero__inner {
    grid-template-columns: 1.6fr 1fr;
    gap: var(--space-16);
  }
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.hero__eyebrow .dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--color-primary) 22%, transparent);
}

.hero__title {
  font-size: var(--text-hero);
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 0.98;
}

.hero__title em {
  font-style: italic;
  font-family: 'Instrument Serif', Georgia, serif;
  font-weight: 400;
  color: var(--color-primary);
}

.hero__lede {
  margin-top: var(--space-8);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
}

.hero__meta {
  margin-top: var(--space-8);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3) var(--space-8);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.hero__meta strong {
  display: block;
  font-weight: 600;
  color: var(--color-text);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-1);
}

.hero__actions {
  margin-top: var(--space-10);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

/* hero side stat card */
.hero__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
}

.hero__card h3 {
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  font-family: var(--font-body);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.stat__value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--color-primary);
  line-height: 1;
}

.stat__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-2);
  letter-spacing: 0.04em;
}

.hero__card hr {
  border: none;
  border-top: 1px solid var(--color-divider);
  margin-block: var(--space-6);
}

.hero__card .pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.pill {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

/* ---- Marquee strip ---- */
.marquee {
  border-block: 1px solid var(--color-border);
  background: var(--color-surface-offset);
  overflow: hidden;
  padding-block: var(--space-4);
}

.marquee__track {
  display: flex;
  gap: var(--space-12);
  white-space: nowrap;
  width: max-content;
  animation: marquee 32s linear infinite;
}

.marquee:hover .marquee__track {
  animation-play-state: paused;
}

.marquee__item {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-base);
  color: var(--color-text-muted);
  display: inline-flex;
  align-items: center;
  gap: var(--space-12);
}

.marquee__item::after {
  content: '✦';
  color: var(--color-primary);
  font-size: var(--text-xs);
}

@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}

/* ---- About ---- */
.about__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
}

@media (min-width: 860px) {
  .about__grid {
    grid-template-columns: 1fr 1.4fr;
    gap: var(--space-16);
  }
}

.about__lede {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 500;
  line-height: 1.25;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.about__lede span {
  color: var(--color-primary);
}

.about__body p + p {
  margin-top: var(--space-4);
}

.about__body {
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

/* ---- Experience timeline ---- */
.timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-12);
}

.role {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2);
  padding: var(--space-6) var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition:
    border-color var(--transition-interactive),
    box-shadow var(--transition-interactive),
    transform var(--transition-interactive);
}

.role:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

@media (min-width: 760px) {
  .role {
    grid-template-columns: 200px 1fr;
    gap: var(--space-8);
    padding: var(--space-8);
  }
}

.role__period {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  padding-top: var(--space-1);
}

.role__period span {
  display: block;
  color: var(--color-text-faint);
  font-weight: 500;
  margin-top: var(--space-1);
}

.role__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--space-2) var(--space-3);
  margin-bottom: var(--space-3);
}

.role__title {
  font-size: var(--text-lg);
  font-weight: 600;
}

.role__company {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: 500;
}

.role__company strong {
  color: var(--color-text);
  font-weight: 600;
}

.role__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 68ch;
}

.role__win {
  margin-top: var(--space-4);
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
  font-size: var(--text-sm);
  color: var(--color-text);
  background: var(--color-primary-highlight);
  border: 1px solid color-mix(in oklab, var(--color-primary) 30%, transparent);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
}

.role__win svg {
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 2px;
}

.role--feature {
  border-color: color-mix(in oklab, var(--color-primary) 35%, var(--color-border));
  background: linear-gradient(in oklab, var(--color-surface), var(--color-surface-offset));
}

/* ---- Expertise grid ---- */
.expertise-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-12);
}

@media (min-width: 620px) {
  .expertise-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 980px) {
  .expertise-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.expertise {
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  transition:
    border-color var(--transition-interactive),
    transform var(--transition-interactive),
    box-shadow var(--transition-interactive);
}

.expertise:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.expertise__icon {
  width: 40px;
  height: 40px;
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}

.expertise h3 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.expertise p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---- Education + certs ---- */
.cred-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  margin-top: var(--space-12);
}

@media (min-width: 860px) {
  .cred-grid {
    grid-template-columns: 1.1fr 0.9fr;
  }
}

.cred-list {
  display: flex;
  flex-direction: column;
}

.cred-item {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: var(--space-5);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-divider);
}

.cred-item:first-child {
  padding-top: 0;
}

.cred-item:last-child {
  border-bottom: none;
}

.cred__year {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-primary);
}

.cred__title {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.cred__org {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.cert-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.cert-tag {
  font-size: var(--text-xs);
  font-weight: 500;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  background: var(--color-surface-offset);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.cert-tag .check {
  color: var(--color-primary);
}

/* ---- Contact ---- */
.contact {
  background: var(--color-surface-offset);
  border-block: 1px solid var(--color-border);
}

.contact__card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: clamp(var(--space-10), 5vw, var(--space-20));
  text-align: center;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.contact__card::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 60%;
  height: 160%;
  background: radial-gradient(
    circle at center,
    color-mix(in oklab, var(--color-primary) 16%, transparent),
    transparent 60%
  );
  pointer-events: none;
}

.contact__title {
  position: relative;
  font-size: var(--text-2xl);
  font-weight: 600;
  max-width: 20ch;
  margin-inline: auto;
  margin-bottom: var(--space-4);
}

.contact__lede {
  position: relative;
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-inline: auto;
  margin-bottom: var(--space-8);
}

.contact__actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
}

.contact__channels {
  position: relative;
  margin-top: var(--space-10);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-6) var(--space-10);
  justify-content: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.channel {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: var(--color-text);
}

.channel:hover {
  color: var(--color-primary);
}

.channel svg {
  color: var(--color-primary);
}

/* ---- Footer ---- */
.footer {
  padding-block: var(--space-12);
  border-top: 1px solid var(--color-border);
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer__nav {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer__nav a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer__nav a:hover {
  color: var(--color-primary);
}

/* ---- Mobile nav ---- */
.menu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

@media (min-width: 760px) {
  .menu-btn {
    display: none;
  }
}

@media (max-width: 759px) {
  .nav__links {
    position: fixed;
    inset: 72px 0 auto 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: var(--space-4) clamp(var(--space-5), 5vw, var(--space-12));
    transform: translateY(-120%);
    transition: transform var(--transition-interactive);
    box-shadow: var(--shadow-lg);
  }

  .nav__links.open {
    transform: translateY(0);
  }

  .nav__links li {
    width: 100%;
  }

  .nav__links a {
    display: block;
    padding: var(--space-3) 0;
    font-size: var(--text-base);
    width: 100%;
  }

  .nav__links a::after {
    display: none;
  }
}

/* ---- Reveal animation ---- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity var(--transition-lift),
    transform var(--transition-lift);
}

.reveal.in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
  }
}