/* Consulting-style executive portfolio — light theme, no animations */

:root {
  --color-bg: #ffffff;
  --color-bg-muted: #f4f6f8;
  --color-bg-contact: #1e2936;
  --color-text: #1a2332;
  --color-text-muted: #5c6778;
  --color-text-inverse: #f8fafc;
  --color-border: #d8dee6;
  --color-accent: #1f4e79;
  --color-accent-hover: #163a5c;
  --font-sans: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", Times, serif;
  --max-width: 1120px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: auto;
  scroll-padding-top: calc(var(--header-height) + 1rem);
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

img {
  max-width: 100%;
  height: auto;
}

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--color-accent-hover);
}

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: 0.75rem 1rem;
  background: var(--color-accent);
  color: var(--color-text-inverse);
  text-decoration: none;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--color-text);
  text-decoration: none;
}

.site-nav ul {
  display: flex;
  gap: 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
}

.site-nav a:hover,
.site-nav a:focus {
  color: var(--color-accent);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin-inline: auto;
  background: var(--color-text);
}

/* Hero */

.hero {
  padding: 5rem 0 4rem;
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(180deg, #fafbfc 0%, #ffffff 100%);
}

.eyebrow {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.hero h1 {
  max-width: min(100%, 38rem);
  margin: 0 0 0.75rem;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-text);
}

.hero-credentials {
  max-width: min(100%, 38rem);
  margin: 0 0 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-muted);
  letter-spacing: 0.01em;
}

.lead {
  max-width: 62ch;
  margin: 0 0 2rem;
  font-size: 1.125rem;
  color: var(--color-text-muted);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.btn {
  display: inline-block;
  padding: 0.8rem 1.35rem;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}

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

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

.btn-secondary {
  border-color: var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin: 0;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.hero-stats dt {
  margin-bottom: 0.25rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hero-stats dd {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text);
}

/* Sections */

.section {
  padding: 4.5rem 0;
}

.section-muted {
  background: var(--color-bg-muted);
  border-block: 1px solid var(--color-border);
}

.section-contact {
  background: var(--color-bg-contact);
  color: var(--color-text-inverse);
}

.section-contact a {
  color: #cbd5e1;
}

.section-contact a:hover {
  color: #ffffff;
}

.section-contact .section-intro {
  color: #cbd5e1;
}

h2 {
  margin: 0 0 1rem;
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 700;
  line-height: 1.2;
}

h3 {
  margin: 0 0 0.75rem;
  font-size: 1.1rem;
  font-weight: 700;
}

.section-intro {
  max-width: 62ch;
  margin: 0 0 2.5rem;
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.check-list,
.plain-list {
  margin: 0;
  padding-left: 1.25rem;
}

.check-list li,
.plain-list li {
  margin-bottom: 0.5rem;
}

.check-list li {
  color: var(--color-text-muted);
}

.about-details p {
  margin-top: 0;
  color: var(--color-text-muted);
}

.mba-perspective {
  grid-column: 1 / -1;
  margin-top: 0.5rem;
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
}

.mba-perspective p {
  margin: 0 0 1rem;
  color: var(--color-text-muted);
  font-size: 0.96rem;
  line-height: 1.65;
}

.mba-perspective p:last-child {
  margin-bottom: 0;
}

.mba-perspective-closing {
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-text);
  font-weight: 600;
}

/* Metrics */

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.metric-card {
  padding: 1.75rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
}

.metric-value {
  margin: 0 0 0.5rem;
  font-size: 2rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-accent);
}

.metric-card h3 {
  margin-bottom: 0.5rem;
}

.metric-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

.case-card h3 a {
  color: inherit;
  text-decoration: none;
}

.case-card h3 a:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.case-note {
  margin: 1rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.case-note a {
  font-weight: 600;
}

.resume-summary a {
  font-weight: 600;
}

/* Case studies */

.case-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.case-card {
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
}

.case-tag {
  margin: 0 0 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.case-company {
  margin: 0 0 0.75rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text);
}

.case-card h3 {
  margin: 0;
}

.case-modal-header .case-company {
  margin: 0 0 0.35rem;
}

.case-card p {
  color: var(--color-text-muted);
}

.case-card ul {
  margin: 1rem 0 0;
  padding-left: 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.case-read-more {
  margin-top: 1.25rem;
  width: 100%;
  text-align: center;
}

.case-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.case-modal[hidden] {
  display: none;
}

.case-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(26, 35, 50, 0.55);
}

.case-modal-panel {
  position: relative;
  width: min(100%, 720px);
  max-height: min(90vh, 900px);
  overflow: auto;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  box-shadow: 0 16px 48px rgba(26, 35, 50, 0.18);
}

.case-modal-header {
  position: sticky;
  top: 0;
  z-index: 1;
  padding: 1.5rem 3.5rem 1.25rem 1.75rem;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
}

.case-modal-header h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  line-height: 1.25;
  color: var(--color-text);
}

.case-modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text-muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.case-modal-close:hover {
  color: var(--color-text);
  border-color: var(--color-accent);
}

.case-modal-body {
  padding: 1.5rem 1.75rem 1.75rem;
}

.case-detail {
  margin-bottom: 1.5rem;
}

.case-detail:last-child {
  margin-bottom: 0;
}

.case-detail h4 {
  margin: 0 0 0.65rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.case-detail p {
  margin: 0 0 0.75rem;
  color: var(--color-text-muted);
  font-size: 0.96rem;
  line-height: 1.65;
}

.case-detail p:last-child {
  margin-bottom: 0;
}

.case-detail ul {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.96rem;
  line-height: 1.65;
}

.case-detail li + li {
  margin-top: 0.35rem;
}

.case-detail h5 {
  margin: 1rem 0 0.5rem;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-text);
}

.case-detail h5:first-of-type {
  margin-top: 0.75rem;
}

body.case-modal-open {
  overflow: hidden;
}

@media (max-width: 720px) {
  .case-modal {
    padding: 0;
    align-items: stretch;
  }

  .case-modal-panel {
    max-height: 100vh;
    width: 100%;
  }
}

.site-nav a[aria-current="page"] {
  color: var(--color-accent);
  font-weight: 600;
}

/* Page hero (interior pages) */

.page-hero {
  padding: 4rem 0 3rem;
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(180deg, #fafbfc 0%, #ffffff 100%);
}

.page-hero h1 {
  max-width: min(100%, 38rem);
  margin: 0 0 1.25rem;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
}

.page-hero-note {
  max-width: 62ch;
  margin: 0;
  font-size: 0.98rem;
  color: var(--color-text-muted);
}

/* AI governance page */

.governance-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.governance-card {
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
}

.governance-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
}

.governance-card p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.65;
  color: var(--color-text-muted);
}

@media (max-width: 720px) {
  .governance-grid {
    grid-template-columns: 1fr;
  }
}

/* Toolkit */

.toolkit-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

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

.toolkit-group ul {
  margin: 0;
  padding-left: 1.15rem;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.toolkit-group li {
  margin-bottom: 0.35rem;
}

/* Resume */

.resume-summary {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.resume-block {
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
}

.resume-section-title {
  margin: 0 0 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--color-accent);
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.timeline {
  margin: 0;
  padding: 0;
  list-style: none;
}

.timeline li {
  padding-bottom: 1.25rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-border);
}

.timeline li:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.timeline-role {
  display: block;
  font-weight: 700;
  color: var(--color-text);
}

.timeline-meta {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.timeline p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-text-muted);
}

/* Contact */

.contact-block {
  font-style: normal;
}

.contact-block p {
  margin: 0 0 0.75rem;
}

.contact-form {
  display: grid;
  gap: 0.75rem;
}

.contact-form label {
  font-size: 0.85rem;
  font-weight: 600;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid #475569;
  border-radius: 2px;
  font: inherit;
  background: #ffffff;
  color: var(--color-text);
}

.form-note {
  margin: 0;
  font-size: 0.8rem;
  color: #94a3b8;
}

/* Footer */

.site-footer {
  padding: 1.5rem 0;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.footer-inner p {
  margin: 0;
}

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

.footer-inner a:hover {
  color: var(--color-accent);
}

/* Responsive */

@media (max-width: 960px) {
  .metrics-grid,
  .case-grid,
  .toolkit-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .two-col {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    display: none;
    padding: 1rem;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
  }

  .site-nav.is-open {
    display: block;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 0.75rem;
  }

  .metrics-grid,
  .case-grid,
  .toolkit-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 3rem;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}