/* ============================================================
   Carter Haley — Portfolio Stylesheet
   ============================================================ */

:root {
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;

  --color-text:           #0F172A;
  --color-text-secondary: #475569;
  --color-text-muted:     #94A3B8;
  --color-bg:             #FFFFFF;
  --color-bg-alt:         #F8FAFC;
  --color-bg-subtle:      #F1F5F9;
  --color-accent:         #1D4ED8;
  --color-accent-hover:   #1E40AF;
  --color-accent-light:   #EFF6FF;
  --color-accent-border:  #BFDBFE;
  --color-border:         #E2E8F0;
  --color-border-strong:  #CBD5E1;

  --shadow-sm:  0 1px 2px 0 rgba(0,0,0,0.05);
  --shadow-md:  0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg:  0 10px 15px -3px rgba(0,0,0,0.07), 0 4px 6px -4px rgba(0,0,0,0.04);

  --radius-sm:  5px;
  --radius-md:  10px;
  --radius-lg:  16px;

  --max-width: 1080px;
  --nav-height: 64px;
}

/* ── Reset & Base ─────────────────────────────────────────── */

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

html {
  scroll-behavior: smooth;
}

body.portfolio-body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
  padding: 0;
}

body.portfolio-body *:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ── Layout primitives ────────────────────────────────────── */

.pf-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.pf-section {
  padding: 5rem 0;
}

.pf-section--alt {
  background: var(--color-bg-alt);
}

.pf-section-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0 0 0.875rem;
}

.pf-section-title {
  font-size: 1.875rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--color-text);
  margin: 0 0 1rem;
}

.pf-section-desc {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  max-width: 600px;
  margin: 0;
}

/* ── Navigation ───────────────────────────────────────────── */

.pf-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.pf-nav__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.pf-nav__brand {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.pf-nav__brand:hover {
  color: var(--color-text);
  text-decoration: none;
}

.pf-nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.pf-nav__links li a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
  display: block;
}

.pf-nav__links li a:hover {
  color: var(--color-text);
  background: var(--color-bg-subtle);
  text-decoration: none;
}

.pf-nav__cta-link {
  font-size: 0.875rem !important;
  font-weight: 500 !important;
  color: var(--color-accent) !important;
  border: 1px solid var(--color-accent-border) !important;
  background: var(--color-accent-light) !important;
  padding: 0.375rem 1rem !important;
  border-radius: 6px !important;
  transition: background 0.15s, color 0.15s, border-color 0.15s !important;
}

.pf-nav__cta-link:hover {
  background: var(--color-accent) !important;
  color: #fff !important;
  border-color: var(--color-accent) !important;
}

.pf-nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: background 0.15s;
}

.pf-nav__toggle:hover {
  background: var(--color-bg-subtle);
}

/* ── Buttons ──────────────────────────────────────────────── */

.pf-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.6875rem 1.375rem;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.15s, color 0.15s, box-shadow 0.15s, transform 0.1s;
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

.pf-btn--primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.pf-btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #fff;
  text-decoration: none;
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.pf-btn--secondary {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-strong);
}

.pf-btn--secondary:hover {
  background: var(--color-bg-alt);
  color: var(--color-text);
  text-decoration: none;
  border-color: var(--color-border);
}

/* ── Hero ─────────────────────────────────────────────────── */

.pf-hero {
  padding-top: calc(var(--nav-height) + 4.5rem);
  padding-bottom: 5rem;
}

.pf-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-accent);
  background: var(--color-accent-light);
  border: 1px solid var(--color-accent-border);
  padding: 0.3125rem 0.875rem;
  border-radius: 100px;
  margin-bottom: 1.75rem;
}

.pf-hero__headline {
  font-size: clamp(2rem, 4vw, 2.875rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.1;
  color: var(--color-text);
  margin: 0 0 1.25rem;
  max-width: 760px;
}

.pf-hero__subhead {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  max-width: 620px;
  margin: 0 0 2.25rem;
}

.pf-hero__actions {
  display: flex;
  gap: 0.875rem;
  flex-wrap: wrap;
  margin-bottom: 3rem;
}

.pf-hero__credstrip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.625rem;
}

.pf-hero__badge {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  padding: 0.3125rem 0.75rem;
  border-radius: 5px;
}

/* ── About ────────────────────────────────────────────────── */

.pf-about__body {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  max-width: 700px;
}

.pf-about__body p {
  margin: 0 0 1.125rem;
}

.pf-about__body p:last-child {
  margin-bottom: 0;
}

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

.pf-about__meta {
  margin-top: 2.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.pf-about__meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.pf-about__meta-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}

.pf-about__meta-value {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
}

/* ── How I Work ───────────────────────────────────────────── */

.pf-work-items {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.pf-work-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
}

.pf-work-item__num {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 0.875rem;
}

.pf-work-item__title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 0.5rem;
  line-height: 1.35;
}

.pf-work-item__desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* ── Capabilities ─────────────────────────────────────────── */

.pf-caps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.125rem;
  margin-top: 2.5rem;
}

.pf-cap-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.625rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.pf-cap-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-md);
}

.pf-cap-card__icon {
  width: 34px;
  height: 34px;
  background: var(--color-accent-light);
  border-radius: 7px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.pf-cap-card__title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 0.625rem;
  line-height: 1.35;
}

.pf-cap-card__body {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
}

/* ── Projects ─────────────────────────────────────────────── */

.pf-projects {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.pf-project-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.875rem;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.pf-project-card:hover {
  border-color: var(--color-border-strong);
  box-shadow: var(--shadow-md);
}

.pf-project-card__domain {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--color-accent);
}

.pf-project-card__title {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.35;
  margin: 0;
}

.pf-project-card__body {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin: 0;
  flex: 1;
}

.pf-project-card__body strong {
  color: var(--color-text);
  font-weight: 600;
}

.pf-project-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4375rem;
  padding-top: 0.875rem;
  border-top: 1px solid var(--color-border);
}

.pf-project-card__links {
  padding-top: 0.75rem;
}

.pf-project-card__link {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-accent);
  text-decoration: none;
  text-underline-offset: 3px;
}

.pf-project-card__link:hover {
  text-decoration: underline;
}

.pf-tag {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 0.25rem 0.625rem;
  border-radius: 4px;
}

/* ── Experience Timeline ──────────────────────────────────── */

.pf-timeline {
  position: relative;
  margin-top: 2.5rem;
}

.pf-timeline-item {
  position: relative;
  padding-left: 2rem;
  padding-bottom: 2.5rem;
  border-left: 1px solid var(--color-border);
}

.pf-timeline-item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.pf-timeline-item::before {
  content: '';
  position: absolute;
  left: -4.5px;
  top: 5px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-bg-alt);
}

.pf-timeline-item--current::before {
  box-shadow: 0 0 0 3px var(--color-accent-light);
}

.pf-tl-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.pf-tl-company {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.3;
}

.pf-tl-role {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-top: 0.125rem;
}

.pf-tl-date {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-muted);
  white-space: nowrap;
  flex-shrink: 0;
  padding-top: 0.125rem;
}

.pf-tl-body {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.pf-tl-body p {
  margin: 0 0 0.625rem;
}

.pf-tl-body ul {
  margin: 0;
  padding-left: 1.25rem;
}

.pf-tl-body li {
  margin-bottom: 0.4rem;
  padding-left: 0.125rem;
}

/* ── Technical Stack ──────────────────────────────────────── */

.pf-stack {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.125rem;
  margin-top: 2.5rem;
}

.pf-stack-group {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.pf-stack-group__title {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.pf-stack-group__items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4375rem;
}

.pf-skill-tag {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  padding: 0.3125rem 0.6875rem;
  border-radius: 5px;
}

/* ── Certifications ───────────────────────────────────────── */

.pf-certs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.125rem;
  margin-top: 2.5rem;
}

.pf-cert-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.4375rem;
}

.pf-cert-card__org {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
}

.pf-cert-card__name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  line-height: 1.4;
  margin: 0;
}

.pf-cert-card__status {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* ── Contact ──────────────────────────────────────────────── */

.pf-contact__inner {
  max-width: 580px;
}

.pf-contact__body {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
  margin: 0 0 2rem;
}

.pf-contact__links {
  display: flex;
  gap: 0.875rem;
  flex-wrap: wrap;
}

/* ── Footer ───────────────────────────────────────────────── */

.pf-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 1.75rem 0;
}

.pf-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.pf-footer__name {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
}

.pf-footer__meta {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.pf-footer__links {
  display: flex;
  gap: 1.5rem;
}

.pf-footer__links a {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.pf-footer__links a:hover {
  color: var(--color-text-secondary);
}

/* ── Responsive ───────────────────────────────────────────── */

@media (max-width: 1024px) {
  .pf-caps {
    grid-template-columns: repeat(2, 1fr);
  }

  .pf-stack {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .pf-nav__links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 1.5rem 1.5rem 2rem;
    gap: 0.25rem;
    align-items: stretch;
    box-shadow: var(--shadow-lg);
  }

  .pf-nav__links.is-open {
    display: flex;
  }

  .pf-nav__links li a {
    padding: 0.625rem 0.75rem;
    font-size: 1rem;
  }

  .pf-nav__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .pf-hero {
    padding-top: calc(var(--nav-height) + 3rem);
    padding-bottom: 3.5rem;
  }

  .pf-section {
    padding: 4rem 0;
  }

  .pf-section-title {
    font-size: 1.625rem;
  }

  .pf-work-items {
    grid-template-columns: 1fr;
  }

  .pf-caps {
    grid-template-columns: 1fr;
  }

  .pf-projects {
    grid-template-columns: 1fr;
  }

  .pf-stack {
    grid-template-columns: 1fr;
  }

  .pf-certs {
    grid-template-columns: 1fr;
  }

  .pf-about__meta {
    gap: 1.25rem;
  }

  .pf-tl-header {
    flex-direction: column;
    gap: 0.25rem;
  }

  .pf-tl-date {
    white-space: normal;
  }

  .pf-footer__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

@media (max-width: 480px) {
  .pf-container {
    padding: 0 1.25rem;
  }

  .pf-nav__inner {
    padding: 0 1.25rem;
  }

  .pf-hero__actions {
    flex-direction: column;
    align-items: flex-start;
  }

  .pf-btn {
    width: 100%;
    justify-content: center;
  }

  .pf-hero__actions .pf-btn {
    max-width: 280px;
  }
}

/* ── Accessibility & Motion ───────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}