/* ===========================
   Custom Properties
   =========================== */
:root {
  --color-bg: #f1f5f9;
  --color-bg-elevated: #ffffff;
  --color-bg-dark: #0f172a;
  --color-bg-mid: #e2e8f0;
  --color-text: #0f172a;
  --color-text-muted: #475569;
  --color-text-inverse: #f1f5f9;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-border: #cbd5e1;
  --color-shadow: rgba(15, 23, 42, 0.08);
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  --max-width: 1100px;
  --radius: 8px;
  --transition: 0.2s ease;
}

/* ===========================
   Reset & Base
   =========================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@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;
    scroll-behavior: auto !important;
  }
}

body {
  font-family: var(--font-stack);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
  transition: color var(--transition);
}

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

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ===========================
   Utilities
   =========================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ===========================
   Skip Link
   =========================== */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  background: var(--color-accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  z-index: 1000;
  text-decoration: none;
  font-weight: 600;
}

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

/* ===========================
   Header
   =========================== */
.site-header {
  position: sticky;
  top: 0;
  background: var(--color-bg-elevated);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.site-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
}

.site-logo:hover {
  color: var(--color-accent);
}

/* Nav */
.nav-list {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  padding: 0.25rem 0;
}

.nav-link:hover {
  color: var(--color-accent);
}

/* Nav Toggle (mobile) */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===========================
   Hero
   =========================== */
.hero {
  padding: 3.5rem 0 3rem;
  text-align: center;
  background: var(--color-bg-dark);
  color: var(--color-text-inverse);
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  line-height: 1.2;
  max-width: 800px;
  margin: 0 auto 0.75rem;
  letter-spacing: -0.02em;
  color: #fff;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: #94a3b8;
  max-width: 600px;
  margin: 0 auto 1.5rem;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===========================
   Buttons
   =========================== */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  text-align: center;
  transition: background var(--transition), color var(--transition),
    box-shadow var(--transition);
  cursor: pointer;
  border: 2px solid transparent;
}

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

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

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

.btn-secondary:hover {
  background: var(--color-accent);
  color: #fff;
}

/* Secondary button on dark backgrounds */
.hero .btn-secondary,
.contact .btn-secondary {
  color: #fff;
  border-color: #fff;
}

.hero .btn-secondary:hover,
.contact .btn-secondary:hover {
  background: #fff;
  color: var(--color-bg-dark);
}

/* ===========================
   Sections
   =========================== */
.case-studies,
.businesses,
.contact {
  padding: 2.5rem 0;
}

.case-studies {
  background: var(--color-bg);
}

.businesses {
  background: var(--color-bg-elevated);
}

.contact {
  background: var(--color-bg-dark);
  color: var(--color-text-inverse);
  text-align: center;
}

section h2 {
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.case-studies h2,
.contact h2 {
  text-align: center;
}

/* ===========================
   Card Grid
   =========================== */
.card-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}

.card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: 0 1px 3px var(--color-shadow);
}

.card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.card p {
  margin-bottom: 0.5rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.card .btn {
  margin-top: 0.5rem;
}

.card-label {
  font-weight: 700;
  color: var(--color-text);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.card-header-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.card-header-row h3 {
  margin-bottom: 0;
}

.badge {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

/* ===========================
   Contact
   =========================== */
.contact h2 {
  color: #fff;
}

.contact p {
  color: #94a3b8;
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
}

.contact-links {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===========================
   Footer
   =========================== */
.site-footer {
  background: var(--color-bg-dark);
  border-top: 1px solid #1e293b;
  padding: 1.25rem 0;
  font-size: 0.875rem;
  color: #94a3b8;
}

.site-footer a {
  color: #94a3b8;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* ===========================
   Responsive — Tablet (768px+)
   =========================== */
@media (min-width: 768px) {
  /* Case study cards stay single-column at tablet; businesses go 2-col */
  .card-grid--two {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ===========================
   Responsive — Desktop (1024px+)
   =========================== */
@media (min-width: 1024px) {
  .card-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  /* Subgrid: align case study card internals across columns.
     Each card has 7 children (h3, label, p, label, p, label, p).
     Cards span 7 rows and use subgrid to share row sizing. */
  .case-studies .card {
    display: grid;
    grid-row: span 7;
    grid-template-rows: subgrid;
    row-gap: 0;
  }

  .case-studies .card h3 {
    margin-bottom: 0;
    padding-bottom: 1rem;
  }

  .case-studies .card p {
    margin-bottom: 0;
  }

  .case-studies .card .card-label {
    margin-bottom: 0;
    padding-top: 0.25rem;
  }

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

/* ===========================
   Resume Page
   =========================== */
.resume-page {
  padding: 2.5rem 0 3rem;
  background: var(--color-bg-elevated);
}

.resume-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--color-border);
}

.resume-header h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 0.2rem;
}

.resume-title {
  color: var(--color-accent);
  font-weight: 600;
  font-size: 1.1rem;
  margin-bottom: 0.15rem;
}

.resume-location {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.resume-page section {
  margin-bottom: 1.75rem;
}

.resume-page section:last-of-type {
  margin-bottom: 0;
}

.resume-page h2 {
  font-size: 1.15rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.4rem;
  margin-bottom: 1rem;
}

.resume-page > .container > section > p {
  color: var(--color-text-muted);
  line-height: 1.6;
}

.resume-skills {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.skill-group h3 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.15rem;
}

.skill-group p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.resume-entry {
  margin-bottom: 1.25rem;
}

.resume-entry:last-child {
  margin-bottom: 0;
}

.resume-entry-header {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.35rem;
}

.resume-entry-header h3 {
  font-size: 1.05rem;
}

.resume-meta {
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.resume-entry p {
  color: var(--color-text-muted);
  line-height: 1.6;
  font-size: 0.95rem;
}

@media (min-width: 768px) {
  .resume-skills {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .resume-skills {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===========================
   Privacy Page
   =========================== */
.privacy-page {
  padding: 2.5rem 0 3rem;
  background: var(--color-bg-elevated);
}

.privacy-page h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 0.5rem;
}

.privacy-updated {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

.privacy-page h2 {
  font-size: 1.25rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.privacy-page p {
  margin-bottom: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.privacy-page ul {
  margin: 0 0 0.75rem 1.5rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.privacy-page li {
  margin-bottom: 0.25rem;
}

/* ===========================
   Services Page
   =========================== */
.services-section {
  padding: 2.5rem 0;
  background: var(--color-bg);
}

.service-card {
  display: flex;
  flex-direction: column;
}

.service-card p:last-of-type {
  margin-bottom: 0.75rem;
}

.service-card .btn {
  margin-top: auto;
}

.service-card-price {
  color: var(--color-text) !important;
  font-size: 1.05rem;
  margin-top: auto;
  padding-top: 0.5rem;
}

.service-card-price strong {
  font-size: 1.3rem;
  color: var(--color-accent);
}

.service-card-price span {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

/* Social Proof */
.social-proof {
  padding: 1.25rem 0;
  background: var(--color-bg-mid);
  text-align: center;
}

.social-proof-text {
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

/* Service Details */
.service-details {
  padding: 2.5rem 0;
  background: var(--color-bg-elevated);
}

.service-details h2 {
  text-align: center;
  margin-bottom: 1.5rem;
}

.service-detail {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.service-detail-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1rem 1.25rem;
  background: var(--color-bg-elevated);
  border: none;
  cursor: pointer;
  font-family: var(--font-stack);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  gap: 1rem;
}

.service-detail-toggle:hover {
  background: var(--color-bg);
}

.service-detail-toggle .chevron {
  flex-shrink: 0;
  transition: transform var(--transition);
}

.service-detail-toggle[aria-expanded="true"] .chevron {
  transform: rotate(180deg);
}

.service-detail-content {
  padding: 0 1.25rem 1.25rem;
}

.service-detail-content h3 {
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-accent);
  margin-top: 1rem;
  margin-bottom: 0.35rem;
}

.service-detail-content h3:first-child {
  margin-top: 0;
}

.service-detail-content p {
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 0.5rem;
}

.service-detail-cta {
  margin-top: 1rem;
}

/* FAQ Section */
.faq-section {
  padding: 2.5rem 0;
  background: var(--color-bg);
}

.faq-section h2 {
  text-align: center;
  margin-bottom: 1.5rem;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
}

.faq-item:first-child {
  border-top: 1px solid var(--color-border);
}

.faq-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 1rem 0;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-stack);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  gap: 1rem;
}

.faq-toggle:hover {
  color: var(--color-accent);
}

.faq-toggle .chevron {
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq-toggle[aria-expanded="true"] .chevron {
  transform: rotate(180deg);
}

.faq-answer {
  padding: 0 0 1rem;
}

.faq-answer p {
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* Hero consulting pitch (homepage) */
.hero-consulting-pitch {
  margin-top: 1.25rem;
  font-size: 0.95rem;
  color: #94a3b8;
}

.hero-consulting-pitch a {
  color: #fff;
  font-weight: 600;
}

.hero-consulting-pitch a:hover {
  color: var(--color-accent);
}

/* ===========================
   Responsive — Mobile (<768px)
   =========================== */
@media (max-width: 767px) {
  .nav-toggle {
    display: flex;
  }

  .primary-nav {
    display: none;
    position: absolute;
    top: 4rem;
    left: 0;
    right: 0;
    background: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
    padding: 1rem 1.25rem;
    box-shadow: 0 4px 12px var(--color-shadow);
  }

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

  .nav-list {
    flex-direction: column;
    gap: 0;
  }

  .nav-link {
    display: block;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-list li:last-child .nav-link {
    border-bottom: none;
  }

  .hero {
    padding: 2.5rem 0 2rem;
  }

  .case-studies,
  .businesses,
  .contact {
    padding: 2rem 0;
  }
}