/* =============================================================================
   Upper Bound Robotics — Design System
   Color Theme: Black and Gold
   ============================================================================= */

/* -----------------------------------------------------------------------------
   Google Fonts
   ----------------------------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* -----------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   ----------------------------------------------------------------------------- */
:root {
  /* Primary colors — black and gold palette */
  --color-black: #0a0a0a;
  --color-black-light: #141414;
  --color-black-lighter: #1e1e1e;
  --color-charcoal: #2a2a2a;
  --color-gray-dark: #3a3a3a;
  --color-gray: #6b6b6b;
  --color-gray-light: #9a9a9a;
  --color-gray-lighter: #d4d4d4;
  --color-off-white: #f5f5f0;
  --color-white: #ffffff;

  /* Gold accent colors */
  --color-gold: #c9a84c;
  --color-gold-light: #d4b85c;
  --color-gold-dark: #b08d3a;
  --color-gold-muted: rgba(201, 168, 76, 0.15);
  --color-gold-glow: rgba(201, 168, 76, 0.3);

  /* Semantic colors */
  --color-bg-primary: var(--color-black);
  --color-bg-secondary: var(--color-black-light);
  --color-bg-tertiary: var(--color-black-lighter);
  --color-bg-card: var(--color-charcoal);
  --color-bg-light: var(--color-off-white);
  --color-text-primary: var(--color-white);
  --color-text-secondary: var(--color-gray-lighter);
  --color-text-muted: var(--color-gray-light);
  --color-text-dark: var(--color-black);
  --color-accent: var(--color-gold);
  --color-accent-hover: var(--color-gold-light);
  --color-border: var(--color-gray-dark);

  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3.25rem;
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --line-height-tight: 1.2;
  --line-height-normal: 1.6;
  --line-height-relaxed: 1.8;

  /* Spacing scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Layout */
  --max-width: 1800px;
  --max-width-narrow: 1600px;
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.5);
  --shadow-gold: 0 4px 20px rgba(201, 168, 76, 0.15);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
}

/* -----------------------------------------------------------------------------
   Light Theme Overrides
   Applied when .theme-light class is on the <html> element.
   ----------------------------------------------------------------------------- */
.theme-light {
  --color-bg-primary: #f5f5f0;
  --color-bg-secondary: #eaeae4;
  --color-bg-tertiary: #e0e0da;
  --color-bg-card: #ffffff;
  --color-bg-light: #ffffff;
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #3a3a3a;
  --color-text-muted: #6b6b6b;
  --color-text-dark: #1a1a1a;
  --color-accent: #9e8432;
  --color-accent-hover: #b08d3a;
  --color-border: #d4d4cc;
  --color-gold-muted: rgba(158, 132, 50, 0.1);
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --shadow-gold: 0 4px 20px rgba(158, 132, 50, 0.12);
}

.theme-light .site-header {
  background-color: rgba(245, 245, 240, 0.95);
}

.theme-light .site-logo-text {
  color: #1a1a1a;
}

.theme-light .mobile-menu-toggle span {
  background-color: #1a1a1a;
}

.theme-light .hero {
  background: linear-gradient(135deg,
      #1a1a1a 0%,
      #2a2a2a 50%,
      #3a3a3a 100%);
}

.theme-light .hero h1,
.theme-light .hero p,
.theme-light .hero .hero-label {
  color: #ffffff;
}

.theme-light .hero h1 .accent {
  color: var(--color-gold);
}

.theme-light .page-hero {
  background: linear-gradient(135deg,
      #1a1a1a 0%,
      #2a2a2a 100%);
}

.theme-light .page-hero h1,
.theme-light .page-hero p {
  color: #ffffff;
}

.theme-light .cta-section {
  background: linear-gradient(135deg,
      #1a1a1a 0%,
      #2a2a2a 100%);
}

.theme-light .cta-section h2,
.theme-light .cta-section p {
  color: #ffffff;
}

.theme-light .post-header {
  background: linear-gradient(135deg,
      #1a1a1a 0%,
      #2a2a2a 100%);
}

.theme-light .post-header h1,
.theme-light .post-header .post-meta,
.theme-light .post-header .post-back {
  color: #ffffff;
}

.theme-light .site-footer {
  background-color: #1a1a1a;
}

.theme-light .site-footer,
.theme-light .site-footer p,
.theme-light .site-footer a,
.theme-light .footer-brand .site-logo-text {
  color: #d4d4d4;
}

.theme-light .site-footer a:hover {
  color: var(--color-gold);
}

.theme-light .nav-links a {
  color: #3a3a3a;
}

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

.theme-light .button-primary {
  color: #ffffff;
}

.theme-light .button-primary:hover {
  color: #ffffff;
}

/* Theme toggle button */
.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  cursor: pointer;
  padding: 6px 10px;
  font-size: var(--font-size-base);
  line-height: 1;
  transition: all var(--transition-fast);
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
}

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

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

ul,
ol {
  list-style: none;
}

/* -----------------------------------------------------------------------------
   Typography
   ----------------------------------------------------------------------------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

h4 {
  font-size: var(--font-size-xl);
}

h5 {
  font-size: var(--font-size-lg);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

.text-accent {
  color: var(--color-accent);
}

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

/* -----------------------------------------------------------------------------
   Layout Utilities
   ----------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container-narrow {
  max-width: var(--max-width-narrow);
}

.section {
  padding: var(--space-5xl) 0;
}

.section-dark {
  background-color: var(--color-bg-secondary);
}

.section-darker {
  background-color: var(--color-bg-primary);
}

.section-light {
  background-color: var(--color-bg-light);
  color: var(--color-text-dark);
}

.section-light h2,
.section-light h3,
.section-light h4 {
  color: var(--color-text-dark);
}

.section-light p {
  color: var(--color-gray);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header h2 {
  margin-bottom: var(--space-md);
}

.section-header p {
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto;
}

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

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.flex {
  display: flex;
  gap: var(--space-md);
}

.flex-center {
  align-items: center;
  justify-content: center;
}

.text-center {
  text-align: center;
}

/* -----------------------------------------------------------------------------
   Navigation
   ----------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-base);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-text-primary);
}

.site-logo img {
  height: 36px;
  width: auto;
}

.site-logo-text {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-extrabold);
  letter-spacing: 3px;
  color: var(--color-white);
}

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

.nav-links a {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

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

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  margin-left: var(--space-md);
}

.nav-links a.nav-cta {
  color: #ffffff;
}

.nav-links a.nav-cta:hover {
  color: #ffffff;
}

.nav-links a.nav-cta::after {
  display: none;
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  flex-direction: column;
  gap: 5px;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* -----------------------------------------------------------------------------
   Buttons
   ----------------------------------------------------------------------------- */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  border: 2px solid transparent;
}

.button-primary {
  background-color: var(--color-accent);
  color: #ffffff;
  border-color: var(--color-accent);
}

.button-primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  color: #ffffff;
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}

.button-outline {
  background-color: transparent;
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.button-outline:hover {
  background-color: var(--color-accent);
  color: var(--color-black);
  transform: translateY(-2px);
}

.button-white {
  background-color: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.button-white:hover {
  background-color: var(--color-white);
  color: var(--color-black);
  transform: translateY(-2px);
}

.button-sm {
  padding: 8px 20px;
  font-size: var(--font-size-xs);
}

.button-lg {
  padding: 16px 36px;
  font-size: var(--font-size-base);
}

/* -----------------------------------------------------------------------------
   Hero Section & Slideshow
   ----------------------------------------------------------------------------- */
.hero {
  position: relative;
  height: 85vh;
  min-height: 600px;
  background: linear-gradient(135deg,
      var(--color-black) 0%,
      var(--color-black-light) 50%,
      var(--color-charcoal) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 70%;
  height: 200%;
  background: radial-gradient(ellipse at center,
      var(--color-gold-muted) 0%,
      transparent 70%);
  pointer-events: none;
  z-index: 1;
}

/* Individual slides */
.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  padding: calc(72px + var(--space-4xl)) 0 var(--space-4xl);
  opacity: 0;
  z-index: 0;
  transition: opacity 0.8s ease;
  pointer-events: none;
}

.hero-slide.active {
  opacity: 1;
  z-index: 2;
  pointer-events: auto;
}

/* Optional background image per slide */
.hero-slide-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  z-index: 0;
}

.hero-slide-bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(10, 10, 10, 0.7);
}

.hero .container {
  position: relative;
  z-index: 3;
}

.hero-content {
  max-width: 780px;
}

/* Slide content animations */
.hero-slide.active .hero-label {
  animation: slide_fade_up 0.6s ease 0.2s both;
}

.hero-slide.active h1 {
  animation: slide_fade_up 0.6s ease 0.35s both;
}

.hero-slide.active p {
  animation: slide_fade_up 0.6s ease 0.5s both;
}

.hero-slide.active .hero-buttons {
  animation: slide_fade_up 0.6s ease 0.65s both;
}

@keyframes slide_fade_up {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Hero text styles */
.hero-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--color-gold);
  margin-bottom: var(--space-lg);
  padding: var(--space-xs) var(--space-md);
  border: 1px solid rgba(201, 168, 76, 0.3);
  border-radius: 100px;
  background-color: rgba(201, 168, 76, 0.15);
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: var(--font-weight-extrabold);
  margin-bottom: var(--space-lg);
  line-height: 1.1;
  color: #ffffff;
}

.hero h1 .accent {
  color: var(--color-gold);
}

.hero p {
  font-size: var(--font-size-lg);
  color: #d4d4d4;
  margin-bottom: var(--space-2xl);
  max-width: 540px;
}

.hero-buttons {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
}

/* Slide indicators */
.hero-indicators {
  position: absolute;
  bottom: var(--space-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--space-sm);
  z-index: 10;
}

.hero-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.5);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: all var(--transition-base);
}

.hero-indicator:hover {
  border-color: var(--color-gold);
}

.hero-indicator.active {
  background-color: var(--color-gold);
  border-color: var(--color-gold);
}

/* Page hero (shorter hero for inner pages) */
.page-hero {
  padding: calc(72px + var(--space-4xl)) 0 var(--space-3xl);
  background: linear-gradient(135deg,
      var(--color-black) 0%,
      var(--color-black-light) 100%);
  border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-md);
}

.page-hero p {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 600px;
}

.back-link {
  display: inline-block;
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  margin-bottom: var(--space-md);
  transition: color var(--transition-fast);
}

.back-link:hover {
  color: var(--color-gold);
}

/* -----------------------------------------------------------------------------
   Cards
   ----------------------------------------------------------------------------- */
.card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card:hover {
  border-color: var(--color-gold-dark);
  transform: translateY(-4px);
  box-shadow: var(--shadow-gold);
}

.card-accent {
  border-left: 3px solid var(--color-gold);
}

.card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-gold-muted);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-xl);
}

.card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.card p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 0;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-top: var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-accent);
}

.card-link::after {
  content: '→';
  transition: transform var(--transition-fast);
}

.card:hover .card-link::after {
  transform: translateX(4px);
}

/* Blog card */
.blog-card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}

.blog-card:hover {
  border-color: var(--color-gold-dark);
  transform: translateY(-4px);
  box-shadow: var(--shadow-gold);
}

.blog-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background-color: var(--color-gray-dark);
}

.blog-card-content {
  padding: var(--space-xl);
}

.blog-card-date {
  font-size: var(--font-size-xs);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-sm);
}

.blog-card-content h3 {
  font-size: var(--font-size-md);
  margin-bottom: var(--space-sm);
}

.blog-card-content h3 a {
  color: var(--color-text-primary);
}

.blog-card-content h3 a:hover {
  color: var(--color-accent);
}

.blog-card-content p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

/* Stat card */
.stat-card {
  text-align: center;
  padding: var(--space-xl);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-gold);
  border-radius: var(--border-radius-lg);
  transition: transform var(--transition-base);
}

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

/* Team callout card */
.team-callout {
  max-width: 900px;
  margin: 0 auto var(--space-3xl);
  padding: var(--space-2xl);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-gold);
  border-radius: var(--border-radius-lg);
  font-size: var(--font-size-lg);
  line-height: 1.8;
  color: var(--color-text-secondary);
}

.team-callout p {
  margin: 0;
}

/* 5-column grid for stat cards */
.grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-lg);
}

.stat-card .stat-number {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-extrabold);
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--space-xs);
}

.stat-card .stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* -----------------------------------------------------------------------------
   CTA Section
   ----------------------------------------------------------------------------- */
.cta-section {
  padding: var(--space-4xl) 0;
  background: linear-gradient(135deg,
      var(--color-black-light) 0%,
      var(--color-charcoal) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at center,
      var(--color-gold-muted) 0%,
      transparent 70%);
  pointer-events: none;
}

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

.cta-section h2 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-md);
}

.cta-section p {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Gold divider line */
.gold-divider {
  width: 60px;
  height: 3px;
  background-color: var(--color-accent);
  margin: 0 auto var(--space-xl);
  border-radius: 2px;
}

/* -----------------------------------------------------------------------------
   Contact Form
   ----------------------------------------------------------------------------- */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-gold-muted);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-gray);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

/* Inline status messages shown after form submission */
.form-status {
  margin-top: 20px;
  padding: var(--space-lg) var(--space-xl);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

.form-status-success {
  background-color: rgba(76, 175, 80, 0.1);
  border: 1px solid rgba(76, 175, 80, 0.3);
  color: #81c784;
}

.form-status-error {
  background-color: rgba(244, 67, 54, 0.1);
  border: 1px solid rgba(244, 67, 54, 0.3);
  color: #e57373;
}

.form-status-error a {
  color: var(--color-accent);
}

/* -----------------------------------------------------------------------------
   Footer
   ----------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-black);
  border-top: 1px solid var(--color-border);
  padding: var(--space-4xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-md);
  max-width: 300px;
}

.footer-column h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-accent);
  margin-bottom: var(--space-lg);
}

.footer-column ul li {
  margin-bottom: var(--space-sm);
}

.footer-column ul li a {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.footer-column ul li a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: var(--font-size-xs);
  color: var(--color-gray);
  margin-bottom: 0;
}

/* -----------------------------------------------------------------------------
   Blog Post Layout
   ----------------------------------------------------------------------------- */
.post-header {
  padding: calc(72px + var(--space-4xl)) 0 var(--space-2xl);
  background: linear-gradient(135deg,
      var(--color-black) 0%,
      var(--color-black-light) 100%);
  border-bottom: 1px solid var(--color-border);
}

.post-meta {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
  margin-bottom: var(--space-lg);
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.post-meta .post-date {
  color: var(--color-accent);
}

.post-body {
  padding: var(--space-3xl) 0;
}

.post-body .container {
  max-width: var(--max-width-narrow);
}

.post-body h2 {
  font-size: var(--font-size-2xl);
  margin-top: var(--space-3xl);
  margin-bottom: var(--space-lg);
}

.post-body h3 {
  font-size: var(--font-size-xl);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.post-body p {
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--space-lg);
}

.post-body ul,
.post-body ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
}

.post-body ul {
  list-style: disc;
}

.post-body ol {
  list-style: decimal;
}

.post-body li {
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
}

.post-body img {
  border-radius: var(--border-radius-lg);
  margin: var(--space-2xl) 0;
}

.post-body blockquote {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-xl);
  margin: var(--space-2xl) 0;
  font-style: italic;
  color: var(--color-text-muted);
}

.post-body code {
  background-color: var(--color-bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: var(--font-size-sm);
}

.post-body pre {
  background-color: var(--color-bg-tertiary);
  padding: var(--space-xl);
  border-radius: var(--border-radius);
  overflow-x: auto;
  margin-bottom: var(--space-lg);
}

.post-body pre code {
  padding: 0;
  background: none;
}

.post-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  margin-bottom: var(--space-2xl);
}

.post-back::before {
  content: '←';
}

/* -----------------------------------------------------------------------------
   Product Page Layout
   ----------------------------------------------------------------------------- */
.product-features {
  padding: var(--space-4xl) 0;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.feature-item {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.feature-bullet {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

.feature-item h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-xs);
}

.feature-item p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 0;
}

/* Product description body content */
.product-body {
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--color-border);
}

.product-body .container {
  max-width: var(--max-width-narrow);
}

.product-body h2 {
  font-size: var(--font-size-2xl);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
}

.product-body p {
  font-size: var(--font-size-md);
  line-height: var(--line-height-relaxed);
}

.product-body ul {
  list-style: disc;
  padding-left: var(--space-xl);
  margin-bottom: var(--space-lg);
}

.product-body li {
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
}

/* -----------------------------------------------------------------------------
   Services Page
   ----------------------------------------------------------------------------- */
.service-block {
  padding: var(--space-2xl);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-gold);
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--space-xl);
  transition: border-color var(--transition-base);
}

.service-block:hover {
  border-left-color: var(--color-gold-light);
}

.service-block-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.service-icon {
  font-size: var(--font-size-2xl);
  line-height: 1;
}

.service-block h3 {
  font-size: var(--font-size-xl);
  margin-bottom: 0;
  color: var(--color-accent);
}

.service-block p {
  margin-bottom: var(--space-md);
}

.service-block ul {
  list-style: none;
  padding: 0;
}

.service-block li {
  position: relative;
  padding-left: var(--space-lg);
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.service-block li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  border-radius: 50%;
}

/* Contact info on contact page */
.contact-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-xl);
}

.contact-info-item {
  text-align: center;
  padding: var(--space-2xl);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-gold);
  border-radius: var(--border-radius-lg);
  transition: transform var(--transition-base);
}

.contact-info-item:hover {
  transform: translateY(-2px);
}

.contact-info-item .contact-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.contact-info-item h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--space-sm);
}

.contact-info-item p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-bottom: 0;
}

.contact-info-item a {
  color: var(--color-accent);
}

/* Contact form container */
.contact-form-wrapper {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-2xl);
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
}

/* -----------------------------------------------------------------------------
   Animations
   ----------------------------------------------------------------------------- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

/* Gold shimmer on hover for special elements */
@keyframes shimmer {
  0% {
    background-position: -200% center;
  }

  100% {
    background-position: 200% center;
  }
}

/* -----------------------------------------------------------------------------
   Responsive Design
   ----------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-5 {
    grid-template-columns: repeat(3, 1fr);
  }

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

  .feature-list {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 2.25rem;
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.5rem;
  }

  .section {
    padding: var(--space-3xl) 0;
  }

  .container {
    padding: 0 var(--space-md);
  }

  /* Mobile navigation */
  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background-color: var(--color-bg-secondary);
    flex-direction: column;
    padding: var(--space-xl);
    border-bottom: 1px solid var(--color-border);
    gap: var(--space-md);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-cta {
    margin-left: 0;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  /* Stack grids */
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

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

  /* Hero adjustments */
  .hero {
    min-height: 70vh;
    text-align: center;
  }

  .hero p {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .button-lg {
    padding: 14px 24px;
  }

  .stat-card .stat-number {
    font-size: var(--font-size-2xl);
  }
}