/* Material 3 Expressive Theme for Regency Acquisitions */
:root {
  /* Color roles - Light theme */
  --md-sys-color-primary: #c6a664;
  --md-sys-color-on-primary: #332600;
  --md-sys-color-secondary: #7a5d00;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-tertiary: #6b5f3d;
  --md-sys-color-on-tertiary: #ffffff;
  --md-sys-color-surface: #fffff8;
  --md-sys-color-surface-variant: #f5e9d2;
  --md-sys-color-on-surface: #1f1b16;
  --md-sys-color-on-surface-variant: #4c4639;
  --md-sys-color-outline: #7e7667;
  --md-sys-color-error: #ba1a1a;
  --md-sys-color-on-error: #ffffff;
  --md-sys-color-inverse-surface: #35302a;
  --md-sys-color-inverse-on-surface: #f9efe7;
  
  /* Elevation tonal colors */
  --md-sys-color-surface-container-lowest: #ffffff;
  --md-sys-color-surface-container-low: #fbf5ee;
  --md-sys-color-surface-container: #f5efe7;
  --md-sys-color-surface-container-high: #efe9e1;
  --md-sys-color-surface-container-highest: #e9e3db;
  
  /* Shape */
  --md-sys-shape-corner-xs: 6px;
  --md-sys-shape-corner-sm: 10px;
  --md-sys-shape-corner-md: 16px;
  --md-sys-shape-corner-lg: 24px;
  --md-sys-shape-corner-xl: 28px;
  
  /* Spacing (8pt grid) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 28px;
  --space-8: 32px;
  --space-9: 36px;
  --space-10: 40px;
  --space-11: 44px;
  --space-12: 48px;
  --space-13: 52px;
  --space-14: 56px;
  --space-15: 60px;
  --space-16: 64px;
  --space-17: 68px;
  --space-18: 72px;
  --space-19: 76px;
  --space-20: 80px;
  --space-21: 84px;
  --space-22: 88px;
  --space-23: 92px;
  --space-24: 96px;
  
  /* Typography */
  --font-serif: ui-serif, Georgia, "Times New Roman", serif;
  --font-sans: system-ui, "Segoe UI", Roboto, sans-serif;
  
  /* Motion */
  --motion-easing-standard: cubic-bezier(0.2, 0, 0, 1);
  --motion-duration-short: 100ms;
  --motion-duration-medium: 250ms;
  --motion-duration-long: 300ms;
}

/* Dark theme */
.dark-mode {
  --md-sys-color-primary: #e9c37d;
  --md-sys-color-on-primary: #3e2d00;
  --md-sys-color-secondary: #ecc16d;
  --md-sys-color-on-secondary: #3f2f00;
  --md-sys-color-tertiary: #d5c6a2;
  --md-sys-color-on-tertiary: #393012;
  --md-sys-color-surface: #1f1b16;
  --md-sys-color-surface-variant: #4c4639;
  --md-sys-color-on-surface: #e9e1d8;
  --md-sys-color-on-surface-variant: #cec6b4;
  --md-sys-color-outline: #979080;
  --md-sys-color-error: #ffb4ab;
  --md-sys-color-on-error: #690005;
  --md-sys-color-inverse-surface: #e9e1d8;
  --md-sys-color-inverse-on-surface: #35302a;
  
  /* Elevation tonal colors */
  --md-sys-color-surface-container-lowest: #1a1612;
  --md-sys-color-surface-container-low: #24201b;
  --md-sys-color-surface-container: #28241f;
  --md-sys-color-surface-container-high: #332f29;
  --md-sys-color-surface-container-highest: #3e3933;
}



/* Base styles */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-serif);
  line-height: 1.5;
  color: var(--md-sys-color-on-surface);
  background-color: var(--md-sys-color-surface);
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Typography scale - Major Third (1.25) */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: normal;
  line-height: 1.2;
  margin-top: 0;
  margin-bottom: var(--space-4);
  max-width: 72ch;
}

h1 {
  font-size: 2.441rem; /* ~39px */
}

h2 {
  font-size: 1.953rem; /* ~31px */
}

h3 {
  font-size: 1.563rem; /* ~25px */
}

h4 {
  font-size: 1.25rem; /* ~20px */
}

p, li {
  max-width: 72ch;
  margin-top: 0;
  margin-bottom: var(--space-4);
}

.lead {
  font-size: 1.25rem; /* ~20px */
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: var(--space-6);
}

/* Layout */
main {
  flex-grow: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
  width: 100%;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  padding: var(--space-2);
  text-decoration: none;
  z-index: 10000;
  transition: top var(--motion-duration-short) var(--motion-easing-standard);
}

.skip-link:focus {
  top: 0;
}

/* Top App Bar */
.app-bar {
  position: sticky;
  top: 0;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4);
  background-color: var(--md-sys-color-surface-container);
  border-bottom: 1px solid var(--md-sys-color-outline);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.app-bar__logo-container {
  display: flex;
  align-items: center;
  min-width: 0;
}

.app-bar__logo {
  height: 40px;
  width: auto;
  margin-right: var(--space-3);
  transition: transform var(--motion-duration-medium) var(--motion-easing-standard);
}

.app-bar__logo:hover {
  transform: scale(1.02);
}

.app-bar__logo {
  fill: var(--md-sys-color-on-surface);
}

.app-bar__brand {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: normal;
  color: var(--md-sys-color-on-surface);
  margin: 0;
  white-space: nowrap;
  overflow: visible;
}

.app-bar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-5);
}

.app-bar__nav-link {
  font-family: var(--font-sans);
  text-decoration: none;
  color: var(--md-sys-color-on-surface);
  font-size: 1rem;
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--motion-duration-medium) var(--motion-easing-standard);
}

.app-bar__nav-link:hover {
  color: var(--md-sys-color-primary);
}

.app-bar__nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--md-sys-color-primary);
  transition: width var(--motion-duration-medium) var(--motion-easing-standard);
}

.app-bar__nav-link:hover::after {
  width: 100%;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 500;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: 
    background-color var(--motion-duration-medium) var(--motion-easing-standard),
    transform var(--motion-duration-short) var(--motion-easing-standard),
    box-shadow var(--motion-duration-medium) var(--motion-easing-standard);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--md-sys-shape-corner-md);
  font-size: 1rem;
  line-height: 1.5;
}

.btn:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

.btn--filled {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.btn--filled:hover {
  background-color: var(--md-sys-color-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(198, 166, 100, 0.2);
}

.btn--tonal {
  background-color: var(--md-sys-color-surface-container-highest);
  color: var(--md-sys-color-on-surface);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.btn--tonal:hover {
  background-color: var(--md-sys-color-surface-container-high);
  transform: translateY(-1px);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Theme Toggle */
.theme-switcher {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2);
  min-width: 40px;
  min-height: 40px;
  border: none;
  background: none;
  cursor: pointer;
}

.theme-icon {
  font-size: 1.2rem;
  line-height: 1;
  transition: transform var(--motion-duration-medium) var(--motion-easing-standard);
}

.theme-switcher:hover .theme-icon {
  transform: rotate(15deg);
}

/* Cards */
.card {
  background-color: var(--md-sys-color-surface-container-lowest);
  border-radius: var(--md-sys-shape-corner-md);
  padding: var(--space-6);
  transition: 
    transform var(--motion-duration-medium) var(--motion-easing-standard),
    box-shadow var(--motion-duration-medium) var(--motion-easing-standard);
}

.card:hover {
  transform: translateY(-2px);
}

.card--elevated {
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 4px 8px rgba(0, 0, 0, 0.08);
}

.card--elevated:hover {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1), 0 8px 16px rgba(0, 0, 0, 0.08);
}

/* Surface containers */
.surface-container-lowest {
  background-color: var(--md-sys-color-surface-container-lowest);
}

.surface-container-low {
  background-color: var(--md-sys-color-surface-container-low);
}

.surface-container {
  background-color: var(--md-sys-color-surface-container);
}

.surface-container-high {
  background-color: var(--md-sys-color-surface-container-high);
}

.surface-container-highest {
  background-color: var(--md-sys-color-surface-container-highest);
}

/* Elevation classes */
.elev-1 {
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.elev-2 {
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 4px 8px rgba(0, 0, 0, 0.08);
}

.elev-3 {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05), 0 6px 12px rgba(0, 0, 0, 0.08);
}

.elev-4 {
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08), 0 8px 16px rgba(0, 0, 0, 0.08);
}

.elev-5 {
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08), 0 12px 24px rgba(0, 0, 0, 0.08);
}

/* Chips */
.chip {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--md-sys-shape-corner-xl);
  background-color: var(--md-sys-color-surface-container-highest);
  color: var(--md-sys-color-on-surface);
  text-decoration: none;
  transition: background-color var(--motion-duration-medium) var(--motion-easing-standard);
}

.chip:hover {
  background-color: var(--md-sys-color-surface-container-high);
}

/* Dividers */
.divider {
  height: 1px;
  background-color: var(--md-sys-color-outline);
  margin: var(--space-12) 0;
  border: 0;
}

.divider--inset {
  margin-left: var(--space-6);
  margin-right: var(--space-6);
}

/* Grid utilities */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid--2-col {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid--3-col {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Hero */
.hero {
  text-align: center;
  padding: var(--space-12) var(--space-4);
  margin: var(--space-6) 0;
}

.hero__card {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-10);
}

.hero__cta-group {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
  flex-wrap: wrap;
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
  margin: var(--space-10) 0;
}

.service-card {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.service-card__content {
  flex-grow: 1;
}

/* Credibility */
.credibility {
  text-align: center;
  padding: var(--space-12) var(--space-4);
  margin: var(--space-10) 0;
}

.logos {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.logo-placeholder {
  width: 120px;
  height: 60px;
  background-color: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-corner-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--md-sys-color-on-surface-variant);
  font-family: var(--font-sans);
  font-size: 0.875rem;
}

.logo-placeholder::before {
  content: "Client";
}

/* Article lists */
.articles-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
  margin: var(--space-10) 0;
}

.article-card {
  height: 100%;
  display: flex;
  flex-direction: column;
}

.article-card__content {
  flex-grow: 1;
}

.article-date {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  color: var(--md-sys-color-primary);
  margin-bottom: var(--space-3);
}

.article-excerpt {
  margin-bottom: var(--space-4);
}

.read-more {
  font-family: var(--font-sans);
  font-weight: 500;
  color: var(--md-sys-color-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  margin-top: auto;
}

.read-more:hover {
  text-decoration: underline;
}

.read-more::after {
  content: ' →';
  margin-left: 0.25rem;
}

/* Forms */
.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  font-family: var(--font-sans);
  font-weight: 500;
  color: var(--md-sys-color-on-surface);
  margin-bottom: var(--space-2);
  display: block;
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-3);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-corner-sm);
  font-family: var(--font-sans);
  font-size: 1rem;
  background-color: var(--md-sys-color-surface);
  transition: 
    border-color var(--motion-duration-medium) var(--motion-easing-standard),
    box-shadow var(--motion-duration-medium) var(--motion-easing-standard);
}

.form-input:focus,
.form-textarea:focus {
  outline: 0;
  border-color: var(--md-sys-color-primary);
  box-shadow: 0 0 0 2px rgba(198, 166, 100, 0.2);
}

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

/* Footer */
.footer {
  background-color: var(--md-sys-color-surface-container-highest);
  color: var(--md-sys-color-on-surface);
  padding: var(--space-10) var(--space-4);
  text-align: center;
  margin-top: var(--space-12);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.footer p {
  margin: var(--space-2) 0;
  color: var(--md-sys-color-on-surface-variant);
  text-align: center;
}

.footer a {
  color: var(--md-sys-color-primary);
  text-decoration: none;
}

.footer a:hover {
  text-decoration: underline;
}

/* Not found */
.not-found {
  text-align: center;
  padding: var(--space-16) var(--space-4);
}

.not-found h1 {
  font-size: 5rem;
  margin: 0 0 var(--space-4);
  color: var(--md-sys-color-primary);
}

.not-found p {
  font-size: 1.25rem;
  max-width: 600px;
  margin: 0 auto var(--space-6);
}

/* Responsive */
@media (max-width: 768px) {
  main {
    padding: var(--space-5) var(--space-3);
  }
  
  .app-bar {
    flex-direction: column;
    gap: var(--space-3);
    padding: var(--space-3);
  }
  
  .app-bar__nav {
    gap: var(--space-3);
  }
  
  .app-bar__nav-link {
    font-size: 0.875rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  h2 {
    font-size: 1.563rem;
  }
  
  .hero {
    padding: var(--space-8) var(--space-3);
  }
  
  .hero__card {
    padding: var(--space-6);
  }
  
  .hero__cta-group {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .services-grid,
  .articles-list {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  
  .logos {
    gap: var(--space-4);
  }
  
  .logo-placeholder {
    width: 100px;
    height: 50px;
  }
  
  .footer {
    padding: var(--space-8) var(--space-3);
  }
}

/* Print */
@media print {
  .app-bar,
  .footer {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .btn,
  .card,
  .app-bar__logo,
  .app-bar__nav-link,
  .app-bar__nav-link::after {
    transition: none;
  }
  
  .btn--filled:hover,
  .btn--tonal:hover,
  .card:hover {
    transform: none;
  }
}