/* ═══════════════════════════════════════════════════════════════
   ZERO DRIFT ADVISORY - BASE STYLES
   
   Palette:
   - Deep navy (#0B1120) - base background
   - Slate blue (#4A6FA5) - primary accent
   - Warm white (#F0EDE6) - text
   - Muted gold (#C9A96E) - reserved accent
   
   Fonts:
   - Lora (serif) - headings
   - Source Sans 3 (sans) - body
   ═══════════════════════════════════════════════════════════════ */

:root {
  /* Background colors */
  --bg:              #0B1120;
  --bg-card:         #111827;
  --bg-card-hover:   #1A2337;
  --bg-surface:      #0E1526;

  /* Accent / brand colors */
  --accent:          #4A6FA5;
  --accent-dim:      rgba(74,111,165,0.12);
  --accent-glow:     rgba(74,111,165,0.25);
  --accent-warm:     #C9A96E;
  --accent-warm-dim: rgba(201,169,110,0.10);

  /* Text colors */
  --text:            #E8E6E1;
  --text-muted:      #9CA3B4;
  --text-dim:        #5E6678;

  /* Borders */
  --border:          #1E2A3E;
  --border-light:    #2A3650;

  /* Status colors */
  --success:         #5B9E7A;
  --warning:         #D4A94C;
  --danger:          #C06060;

  /* Fonts */
  --font-heading:    'Lora', serif;
  --font-body:       'Source Sans 3', sans-serif;

  /* Typography */
  --h1-size:         clamp(2.6rem, 5.5vw, 4rem);
  --h2-size:         clamp(1.7rem, 3.5vw, 2.4rem);
  --h3-size:         1.2rem;
  --h3-contact-size: 1.7rem;
  --body-size:       1.08rem;
  --body-large:      1.25rem;
  --body-small:      1rem;
  --nav-size:        0.88rem;
  --label-size:      0.78rem;
  --button-size:     1rem;
  --tag-size:        0.8rem;
  --logo-size:       1.3rem;
  --stat-size:       1.65rem;
  --case-org-size:   1.4rem;
  --step-number-size: 2.2rem;

  /* Layout */
  --max-width:       940px;
  --card-radius:     8px;
  --button-radius:   6px;
  --card-padding:    1.75rem;
}


/* ── RESET ── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

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


/* ── HEADINGS ── */
h1 {
  font-family: var(--font-heading);
  font-size: var(--h1-size);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 500;
  color: var(--text);
}

h2, .section-title {
  font-family: var(--font-heading);
  font-size: var(--h2-size);
  letter-spacing: -0.015em;
  font-weight: 500;
  color: var(--text);
}

h3 {
  font-size: var(--h3-size);
  font-weight: 600;
  color: var(--text);
}

p {
  font-size: var(--body-size);
  color: var(--text-muted);
  line-height: 1.7;
}


/* ── LINKS ── */
a { color: var(--accent); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--text); }


/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.animate-in {
  opacity: 0;
  animation: fadeUp 0.6s ease-out forwards;
}
.animate-in:nth-child(1) { animation-delay: 0s; }
.animate-in:nth-child(2) { animation-delay: 0.08s; }
.animate-in:nth-child(3) { animation-delay: 0.16s; }
.animate-in:nth-child(4) { animation-delay: 0.24s; }
.animate-in:nth-child(5) { animation-delay: 0.32s; }
.animate-in:nth-child(6) { animation-delay: 0.4s; }
.animate-in:nth-child(7) { animation-delay: 0.48s; }
.animate-in:nth-child(8) { animation-delay: 0.56s; }
/* ═══════════════════════════════════════════════════════════════
   LAYOUT - Nav, Footer, Page Wrapper, Hero, Sections
   ═══════════════════════════════════════════════════════════════ */


/* ── BUTTONS ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  background: var(--accent);
  color: #fff;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--button-size);
  border: none;
  border-radius: var(--button-radius);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s, box-shadow 0.15s, background 0.2s;
  width: fit-content;
  letter-spacing: 0.01em;
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 30px var(--accent-glow);
  color: #fff;
  background: #5680B8;
}
.btn-primary svg { width: 16px; height: 16px; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: transparent;
  color: var(--accent);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--body-small);
  border: 1px solid var(--accent);
  border-radius: var(--button-radius);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.btn-secondary:hover {
  background: var(--accent-dim);
  color: var(--text);
}


/* ── NAV ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1.15rem 2rem;
  background: rgba(11,17,32,0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: var(--logo-size);
  color: var(--text);
  letter-spacing: -0.02em;
  text-decoration: none;
}
.nav-logo span { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: var(--nav-size);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--text); }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--text);
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  margin: 5px 0;
  transition: transform 0.3s, opacity 0.3s;
  border-radius: 2px;
}
.nav-toggle.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }


/* ── PAGE WRAPPER ── */
.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}


/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 6rem;
  padding-bottom: 4rem;
  position: relative;
}
.hero::before {
  content: '';
  position: absolute;
  top: 10%;
  left: -15%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(74,111,165,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.hero-tag {
  font-size: var(--label-size);
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.hero-tag::before {
  content: '';
  width: 32px;
  height: 1px;
  background: var(--accent);
}
.hero h1 { margin-bottom: 1.5rem; }
.hero h1 em {
  font-style: italic;
  color: var(--accent);
}
.hero-sub {
  font-size: var(--body-large);
  color: var(--text-muted);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}
.hero-certs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2rem;
}
.cert-badge {
  font-size: var(--label-size);
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-muted);
  background: var(--bg-card);
}

.hero-tag,
.hero h1,
.hero-sub,
.hero-certs,
.hero .btn-primary {
  animation: fadeUp 0.6s ease-out both;
}
.hero h1      { animation-delay: 0.1s; }
.hero-sub     { animation-delay: 0.2s; }
.hero-certs   { animation-delay: 0.3s; }
.hero .btn-primary { animation-delay: 0.4s; }


/* ── SECTIONS (used on inner pages) ── */
.page-header {
  padding-top: 8rem;
  padding-bottom: 3rem;
}
.section-label {
  font-size: var(--label-size);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}
.section-title { margin-bottom: 1rem; }
.section-desc {
  color: var(--text-muted);
  max-width: 560px;
  margin-bottom: 3rem;
  line-height: 1.7;
}

.page-section {
  padding: 4rem 0;
}
.page-section + .page-section {
  border-top: 1px solid var(--border);
}


/* ── DIVIDER ── */
.divider {
  max-width: var(--max-width);
  margin: 0 auto;
  height: 1px;
  background: var(--border);
}


/* ── FOOTER ── */
footer {
  text-align: center;
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
}
footer .footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
footer .footer-links {
  display: flex;
  gap: 1.5rem;
}
footer .footer-links a {
  color: var(--text-dim);
  font-size: 0.78rem;
  text-decoration: none;
  transition: color 0.2s;
}
footer .footer-links a:hover { color: var(--text-muted); }
/* ═══════════════════════════════════════════════════════════════
   COMPONENTS - Services, Cases, Approach, About, Contact, Blog
   ═══════════════════════════════════════════════════════════════ */


/* ── SERVICES GRID ── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}
.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  transition: border-color 0.25s, background 0.25s, transform 0.2s;
}
.service-card:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}
.service-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-dim);
  border-radius: var(--card-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--accent);
  font-size: 1.1rem;
}
.service-card h3 { margin-bottom: 0.5rem; }
.service-card p {
  font-size: var(--body-small);
  line-height: 1.65;
}


/* ── CASE STUDIES GRID ── */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  overflow: hidden;
  transition: border-color 0.25s, transform 0.25s;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}
.case-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  color: inherit;
}
.case-card-image {
  width: 100%;
  height: 200px;
  background: var(--bg-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.case-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 1;
}
.case-card-image .placeholder-logo {
  width: 120px;
  height: 120px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--accent-dim) 0%, rgba(74,111,165,0.06) 100%);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: var(--label-size);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.case-card-body {
  padding: 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.case-card-type {
  font-size: var(--label-size);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}
.case-card-org {
  font-family: var(--font-heading);
  font-size: var(--case-org-size);
  letter-spacing: -0.01em;
  margin-bottom: 0.6rem;
  color: var(--text);
  font-weight: 500;
}
.case-card-desc {
  color: var(--text-muted);
  font-size: var(--body-small);
  line-height: 1.6;
  margin-bottom: 1rem;
  flex: 1;
}
.case-card-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.case-stat-value {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1;
}
.case-stat-label {
  font-size: var(--tag-size);
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 0.2rem;
}
.case-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.75rem;
}
.deliverable-tag {
  font-size: var(--tag-size);
  font-weight: 500;
  padding: 0.25rem 0.55rem;
  background: rgba(91,158,122,0.08);
  color: var(--success);
  border-radius: 4px;
  letter-spacing: 0.02em;
}

/* In-progress card */
.case-card.in-progress {
  border-style: dashed;
  opacity: 0.55;
}
.case-card.in-progress:hover {
  transform: none;
  border-color: var(--border);
}


/* ── APPROACH STEPS ── */
.approach-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  counter-reset: step;
}
.approach-step {
  position: relative;
  padding: var(--card-padding);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  counter-increment: step;
  transition: border-color 0.25s;
}
.approach-step:hover { border-color: var(--accent); }
.approach-step::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-heading);
  font-size: var(--step-number-size);
  color: var(--accent);
  opacity: 0.4;
  display: block;
  margin-bottom: 0.75rem;
}
.approach-step h3 {
  font-size: var(--h3-size);
  margin-bottom: 0.4rem;
}
.approach-step p {
  font-size: var(--body-small);
  line-height: 1.6;
}


/* ── ABOUT ── */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.about-text p {
  line-height: 1.75;
  margin-bottom: 1rem;
}
.about-details {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
}
.about-detail-row {
  display: flex;
  justify-content: space-between;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--border);
  font-size: var(--body-small);
}
.about-detail-row:last-child { border-bottom: none; }
.about-detail-row .label { color: var(--text-dim); }
.about-detail-row .value { color: var(--text); font-weight: 500; }


/* ── CONTACT ── */
.contact-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: 3rem;
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}
.contact-box h3 {
  font-family: var(--font-heading);
  font-size: var(--h3-contact-size);
  margin-bottom: 0.75rem;
  font-weight: 500;
}
.contact-box p {
  margin-bottom: 1.5rem;
  font-size: var(--body-small);
}

/* ── CTA SECTIONS ── */
.cta-section {
  text-align: center;
  padding-bottom: 5rem;
}
.cta-section p {
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}
.cta-section-tall {
  padding-bottom: 6rem;
}


/* ── BLOG ── */
.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  transition: border-color 0.25s, background 0.25s, transform 0.2s;
  text-decoration: none;
  color: inherit;
  display: block;
}
.blog-card:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
  color: inherit;
}
.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.75rem;
}
.blog-card-date {
  font-size: var(--label-size);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.blog-card-category {
  font-size: var(--tag-size);
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  background: var(--accent-dim);
  color: var(--accent);
  border-radius: 3px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.blog-card h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  color: var(--text);
  line-height: 1.35;
}
.blog-card p {
  font-size: var(--body-small);
  line-height: 1.65;
  color: var(--text-muted);
}
.blog-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.75rem;
}
.blog-tag {
  font-size: var(--tag-size);
  font-weight: 500;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--text-dim);
  letter-spacing: 0.02em;
}
.blog-card-read {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 1rem;
  font-size: var(--body-small);
  font-weight: 600;
  color: var(--accent);
}
.blog-card-read svg { width: 14px; height: 14px; }

/* Blog featured card variant */
.blog-card.featured {
  border-color: var(--border-light);
  position: relative;
}
.blog-card.featured::before {
  content: 'FEATURED';
  position: absolute;
  top: var(--card-padding);
  right: var(--card-padding);
  font-size: var(--tag-size);
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent-warm);
  background: var(--accent-warm-dim);
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
}
/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE BREAKPOINTS
   
   Targets:
   - 1200px+ : Desktop (default)
   - 769-1200px : Tablet landscape / small desktop
   - 481-768px : Tablet portrait
   - 320-480px : Mobile
   
   Coverage: ~98% of devices per StatCounter data
   ═══════════════════════════════════════════════════════════════ */

/* Tablet landscape / small desktop */
@media (max-width: 1024px) {
  .approach-steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Tablet portrait */
@media (max-width: 768px) {
  nav {
    padding: 1rem 1.25rem;
    position: sticky;
    flex-wrap: wrap;
  }
  .nav-links {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    gap: 0;
    padding: 0.75rem 0 0.25rem;
    border-top: 1px solid var(--border);
    margin-top: 0.75rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    font-size: 0.9rem;
    letter-spacing: 0.08em;
    padding: 0.65rem 0;
    border-bottom: 1px solid var(--border);
  }
  .nav-links a:last-child { border-bottom: none; }
  .nav-toggle { display: block; z-index: 101; }

  .hero { padding-top: 5rem; min-height: auto; padding-bottom: 3rem; }
  .page-header { padding-top: 6rem; padding-bottom: 2rem; }
  .page { padding: 0 1.25rem; }

  .services-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .approach-steps { grid-template-columns: 1fr; }
  .about-content { grid-template-columns: 1fr; gap: 1.5rem; }

  .contact-box { padding: 2rem 1.5rem; }

  footer .footer-inner {
    flex-direction: column;
    gap: 1rem;
  }
}

/* Mobile */
@media (max-width: 480px) {
  :root {
    --h1-size: 2.2rem;
    --h2-size: 1.6rem;
    --card-padding: 1.25rem;
  }

  nav { padding: 0.85rem 1rem; }
  .hero { padding-top: 4.5rem; }
  .page-header { padding-top: 5rem; }
  .page { padding: 0 1rem; }

  .hero-certs { gap: 0.4rem; }
  .cert-badge { font-size: 0.62rem; padding: 0.3rem 0.6rem; }

  .case-card-image { height: 160px; }
  .case-card-body { padding: 1.25rem; }

  .page-section { padding: 3rem 0; }
}

/* Small mobile (iPhone SE, Galaxy S series) */
@media (max-width: 360px) {
  :root {
    --h1-size: 1.9rem;
    --h2-size: 1.45rem;
  }
  .page { padding: 0 0.85rem; }
  .btn-primary { padding: 0.75rem 1.25rem; font-size: 0.85rem; }
}

/* Landscape phone */
@media (max-height: 500px) and (orientation: landscape) {
  .hero { min-height: auto; padding-top: 5rem; padding-bottom: 2rem; }
}

/* High-DPI / retina - ensure crisp borders */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .service-card,
  .case-card,
  .approach-step,
  .about-details,
  .contact-box,
  .blog-card {
    border-width: 0.5px;
  }
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}