/* ============================================
   AMBROSE ADVISORY — MAIN STYLESHEET
   Brand: Navy blue (#1B2A6B), white, clean
   Fonts: Playfair Display (display) + Work Sans (body)
   ============================================ */

/* --- DESIGN TOKENS --- */
:root {
  /* Brand palette derived from logo */
  --navy:          #1B2A6B;
  --navy-dark:     #111B4A;
  --navy-light:    #2C3F8A;
  --navy-faint:    #EEF0F8;
  --gold:          #C9A84C;
  --gold-hover:    #B08A38;

  /* Surfaces */
  --color-bg:             #FFFFFF;
  --color-surface:        #F8F8FB;
  --color-surface-alt:    #F1F2F8;
  --color-divider:        #DDE0EE;
  --color-border:         #C8CCE0;

  /* Text */
  --color-text:           #1A1A2E;
  --color-text-muted:     #555870;
  --color-text-faint:     #9095B0;
  --color-text-inverse:   #FFFFFF;

  /* Primary accent */
  --color-primary:        #1B2A6B;
  --color-primary-hover:  #111B4A;
  --color-primary-light:  #EEF0F8;

  /* Type scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);
  --text-hero: clamp(3rem,     0.5rem  + 7vw,    8rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Fonts */
  --font-display: 'Playfair Display', 'Georgia', serif;
  --font-body:    'Work Sans', 'Helvetica Neue', sans-serif;

  /* UI */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);
  --shadow-sm: 0 1px 3px rgba(27,42,107,0.08);
  --shadow-md: 0 4px 16px rgba(27,42,107,0.10);
  --shadow-lg: 0 12px 40px rgba(27,42,107,0.14);

  /* Layout */
  --content-narrow:  660px;
  --content-default: 980px;
  --content-wide:    1200px;
}

/* Dark mode */
[data-theme="dark"] {
  --color-bg:             #0E1124;
  --color-surface:        #141729;
  --color-surface-alt:    #1A1F35;
  --color-divider:        #252A45;
  --color-border:         #2E3460;
  --color-text:           #E4E6F2;
  --color-text-muted:     #9095B0;
  --color-text-faint:     #555870;
  --color-text-inverse:   #0E1124;
  --color-primary:        #7A92E8;
  --color-primary-hover:  #9AADF0;
  --color-primary-light:  #1E2540;
  --navy-faint:           #1E2540;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #0E1124;
    --color-surface:        #141729;
    --color-surface-alt:    #1A1F35;
    --color-divider:        #252A45;
    --color-border:         #2E3460;
    --color-text:           #E4E6F2;
    --color-text-muted:     #9095B0;
    --color-text-faint:     #555870;
    --color-text-inverse:   #0E1124;
    --color-primary:        #7A92E8;
    --color-primary-hover:  #9AADF0;
    --color-primary-light:  #1E2540;
    --navy-faint:           #1E2540;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.4);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.5);
  }
}

/* --- BASE RESET --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  -webkit-text-size-adjust: none;
  text-size-adjust: none;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-20);
}

body {
  min-height: 100dvh;
  line-height: 1.65;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
}

img, picture, video, canvas, svg { display: block; max-width: 100%; height: auto; }
ul[role="list"], ol[role="list"] { list-style: none; }
input, button, textarea, select { font: inherit; color: inherit; }
h1, h2, h3, h4, h5, h6 { text-wrap: balance; line-height: 1.2; font-family: var(--font-display); }
p, li { text-wrap: pretty; }
button { cursor: pointer; background: none; border: none; }

a, button, [role="button"], input, textarea, select {
  transition: color var(--transition), background var(--transition),
              border-color var(--transition), box-shadow var(--transition), opacity var(--transition);
}

::selection {
  background: rgba(27,42,107,0.15);
  color: var(--color-text);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

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

/* --- LAYOUT UTILITIES --- */
.container {
  width: 100%;
  max-width: var(--content-default);
  margin-inline: auto;
  padding-inline: var(--space-6);
}
.container--wide { max-width: var(--content-wide); }
.container--narrow { max-width: var(--content-narrow); }

/* --- HEADER / NAV --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-divider);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: var(--space-8);
}

.nav-logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  flex-shrink: 0;
}

.nav-logo img {
  height: 44px;
  width: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
  background: var(--color-primary-light);
}

.nav-links a.active {
  font-weight: 600;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-primary);
  color: white !important;
  padding: var(--space-2) var(--space-5) !important;
  border-radius: var(--radius-sm);
  font-weight: 600 !important;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: var(--text-xs) !important;
}

.nav-cta:hover {
  background: var(--color-primary-hover) !important;
  color: white !important;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}

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

/* Mobile nav */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  height: 28px;
  padding: 4px;
  align-items: center;
  justify-content: center;
}

.nav-hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

.mobile-nav {
  display: none;
  background: var(--color-bg);
  border-top: 1px solid var(--color-divider);
  padding: var(--space-4) var(--space-6) var(--space-6);
}

.mobile-nav.open {
  display: block;
}

.mobile-nav a {
  display: block;
  text-decoration: none;
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-divider);
  letter-spacing: 0.02em;
}

.mobile-nav a:hover,
.mobile-nav a.active {
  color: var(--color-primary);
}

.mobile-nav a:last-child {
  border-bottom: none;
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-cta-desktop { display: none; }
  .nav-hamburger { display: flex; }
}

/* --- HERO SECTION --- */
.hero {
  background: var(--navy);
  color: white;
  padding-block: clamp(var(--space-16), 10vw, var(--space-32));
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #1B2A6B 0%, #0D1740 60%, #111B4A 100%);
  z-index: 0;
}

.hero::after {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 50vw;
  height: 50vw;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(201,168,76,0.08) 0%, transparent 70%);
  z-index: 0;
}

.hero .container { position: relative; z-index: 1; }

.hero-eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--space-4);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: white;
  margin-bottom: var(--space-6);
  max-width: 20ch;
  line-height: 1.1;
}

.hero-sub {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.80);
  max-width: 56ch;
  line-height: 1.7;
  margin-bottom: var(--space-10);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

/* --- 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;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  padding: var(--space-3) var(--space-8);
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--gold);
  color: var(--navy-dark);
  border-color: var(--gold);
}

.btn-primary:hover {
  background: var(--gold-hover);
  border-color: var(--gold-hover);
  color: var(--navy-dark);
}

.btn-outline {
  background: transparent;
  color: white;
  border-color: rgba(255,255,255,0.4);
}

.btn-outline:hover {
  border-color: white;
  background: rgba(255,255,255,0.08);
  color: white;
}

.btn-navy {
  background: var(--navy);
  color: white;
  border-color: var(--navy);
}

.btn-navy:hover {
  background: var(--navy-dark);
  border-color: var(--navy-dark);
  color: white;
}

/* --- SECTIONS --- */
.section {
  padding-block: clamp(var(--space-12), 8vw, var(--space-24));
}

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

.section-navy {
  background: var(--navy);
  color: white;
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.section-title.light { color: white; }

.section-eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}

.section-eyebrow.light { color: var(--gold); }

.section-subtitle {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 60ch;
  line-height: 1.7;
  margin-bottom: var(--space-12);
}

.section-subtitle.light { color: rgba(255,255,255,0.75); }

.section-header {
  margin-bottom: var(--space-12);
}

/* --- CARDS --- */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-grid {
  display: grid;
  gap: var(--space-6);
}

.card-grid-2 { grid-template-columns: repeat(auto-fill, minmax(400px, 1fr)); }
.card-grid-3 { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.card-grid-4 { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }

@media (max-width: 600px) {
  .card-grid-2, .card-grid-3, .card-grid-4 {
    grid-template-columns: 1fr;
  }
}

/* --- DIVIDERS --- */
.divider {
  width: 48px;
  height: 3px;
  background: var(--gold);
  border-radius: 2px;
  margin-block: var(--space-4);
}

/* --- FOOTER --- */
.site-footer {
  background: var(--navy-dark);
  color: rgba(255,255,255,0.65);
  padding-block: var(--space-12);
  font-size: var(--text-sm);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-6);
}

.footer-logo img { height: 36px; width: auto; opacity: 0.85; }

.footer-links {
  display: flex;
  gap: var(--space-6);
  flex-wrap: wrap;
  list-style: none;
}

.footer-links a {
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.footer-links a:hover { color: white; }

.footer-copy {
  color: rgba(255,255,255,0.35);
  font-size: var(--text-xs);
}

/* --- STAT ROW --- */
.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-10);
}

.stat-item {}
.stat-number {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: white;
  line-height: 1;
}

.stat-label {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  margin-top: var(--space-1);
}

/* --- PAGE HERO (interior pages) --- */
.page-hero {
  background: var(--navy);
  color: white;
  padding-block: clamp(var(--space-12), 6vw, var(--space-20));
}

.page-hero h1 {
  font-size: var(--text-2xl);
  color: white;
  margin-bottom: var(--space-3);
}

.page-hero p {
  font-size: var(--text-base);
  color: rgba(255,255,255,0.75);
  max-width: 58ch;
  line-height: 1.7;
}

/* --- FORM STYLES --- */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.form-group label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: var(--space-3) var(--space-4);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: var(--text-base);
  width: 100%;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(27,42,107,0.12);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-grid {
  display: grid;
  gap: var(--space-5);
}

.form-grid-2 {
  grid-template-columns: 1fr 1fr;
}

@media (max-width: 600px) {
  .form-grid-2 { grid-template-columns: 1fr; }
}

/* --- UTILITY --- */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.text-gold { color: var(--gold); }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

/* --- SCROLL FADE IN --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- PORTFOLIO ITEMS --- */
.portfolio-item {
  display: flex;
  flex-direction: column;
  padding: var(--space-6);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  text-decoration: none;
  color: var(--color-text);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}

.portfolio-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.portfolio-role {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-1);
}

[data-theme="dark"] .portfolio-role {
  color: var(--color-primary);
}

.portfolio-company {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.portfolio-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
  flex: 1;
}

.portfolio-link {
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

/* --- EXPERTISE MAXIM --- */
.maxim-block {
  border-left: 3px solid var(--gold);
  padding: var(--space-4) var(--space-6);
  background: var(--navy-faint);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-block: var(--space-6);
}

.maxim-block p {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-text);
  line-height: 1.5;
  max-width: 65ch;
}

/* --- SERVICE TIER CARDS --- */
.service-tier {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-8) var(--space-8);
  position: relative;
  transition: box-shadow var(--transition), border-color var(--transition);
}

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

.service-tier.featured {
  border-color: var(--navy);
  border-width: 2px;
}

.service-tier.featured::before {
  content: 'Most Comprehensive';
  position: absolute;
  top: -12px;
  left: var(--space-6);
  background: var(--navy);
  color: white;
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-full);
}

.service-tier-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-5);
  color: var(--color-primary);
}

[data-theme="dark"] .service-tier-icon {
  color: var(--color-primary);
}

.service-tier h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.service-tier-meta {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: var(--space-4);
}

.service-tier p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-5);
}

.service-tier-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.service-tier-list li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  display: flex;
  gap: var(--space-3);
  align-items: flex-start;
}

.service-tier-list li::before {
  content: '→';
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* --- RESPONSIVE FIXES --- */
@media (max-width: 860px) {
  /* About page career cards */
  .card[style*="grid-template-columns:200px"] {
    display: flex !important;
    flex-direction: column !important;
    gap: var(--space-3) !important;
  }
  /* Services intro 2-col */
  div[style*="grid-template-columns:1fr 1fr"] {
    grid-template-columns: 1fr !important;
  }
  /* About sidebar */
  div[style*="grid-template-columns:1fr 340px"] {
    grid-template-columns: 1fr !important;
  }
  div[style*="position:sticky"] {
    position: static !important;
  }
}

@media (max-width: 600px) {
  .stat-row {
    flex-direction: column;
    gap: var(--space-8);
  }
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}