/* Ira Ryan Cycles — Main Design System & Global Styles */

:root {
  /* Color Tokens */
  --color-slate-950: #0a0d0f;
  --color-slate-900: #12171a;
  --color-slate-850: #182024;
  --color-slate-800: #202b31;
  --color-slate-700: #33434c;
  
  --color-racing-green: #1a3c2e;
  --color-racing-green-dark: #10271e;
  --color-racing-green-light: #2a5a46;

  --color-brass: #c59b27;
  --color-brass-light: #e0b642;
  --color-brass-dark: #997517;

  --color-rust: #b95d38;
  --color-leather: #784224;

  --color-canvas: #faf8f5;
  --color-canvas-alt: #f2ece4;
  --color-surface: #ffffff;
  --color-surface-hover: #fcfbfa;

  --color-text-primary: #1a2024;
  --color-text-secondary: #4a5660;
  --color-text-tertiary: #788590;
  --color-text-inverse: #f4f6f8;
  
  --color-border: #e2dbd0;
  --color-border-focus: #c59b27;
  --color-border-dark: #2a353d;

  /* Typography Tokens */
  --font-display: 'Cinzel', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Elevation & Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
  --shadow-lg: 0 12px 28px rgba(0,0,0,0.12), 0 4px 10px rgba(0,0,0,0.06);
  --shadow-warm: 0 10px 30px rgba(28, 60, 46, 0.08);

  /* Layout & Spacing */
  --container-max: 1280px;
  --header-height: 80px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 350ms cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--color-canvas);
  color: var(--color-text-primary);
  font-family: var(--font-sans);
  line-height: 1.65;
  font-weight: 400;
  overflow-x: hidden;
}

/* Accessible Focus States */
:focus-visible {
  outline: 2px solid var(--color-brass);
  outline-offset: 3px;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--color-text-primary);
  line-height: 1.2;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2.2rem, 4vw + 1rem, 3.8rem); }
h2 { font-size: clamp(1.75rem, 2.5vw + 0.5rem, 2.6rem); }
h3 { font-size: clamp(1.3rem, 1.5vw + 0.4rem, 1.85rem); }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: 1.25rem;
  color: var(--color-text-secondary);
}

p:last-child {
  margin-bottom: 0;
}

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

a:hover {
  color: var(--color-brass-dark);
}

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

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section {
  padding: 5rem 0;
}

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

.section-dark {
  background-color: var(--color-slate-900);
  color: var(--color-text-inverse);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: #ffffff;
}

.section-dark p {
  color: #b8c4cb;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-brass);
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  margin-top: 0.75rem;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(250, 248, 245, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.brand-logo svg {
  width: 42px;
  height: 42px;
  color: var(--color-racing-green);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--color-slate-900);
  line-height: 1.1;
}

.brand-tagline {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-brass-dark);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-slate-800);
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-brass);
  transition: width var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-racing-green);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Button Component */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.65rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--color-racing-green);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(26, 60, 46, 0.25);
}

.btn-primary:hover {
  background-color: var(--color-racing-green-dark);
  color: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(26, 60, 46, 0.35);
}

.btn-brass {
  background-color: var(--color-brass);
  color: var(--color-slate-950);
  font-weight: 700;
}

.btn-brass:hover {
  background-color: var(--color-brass-light);
  color: var(--color-slate-950);
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-slate-900);
  border-color: var(--color-border);
}

.btn-outline:hover {
  background-color: var(--color-canvas-alt);
  border-color: var(--color-slate-700);
}

.btn-outline-white {
  background-color: transparent;
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-outline-white:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: #ffffff;
  color: #ffffff;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

/* Mobile Menu Toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.5rem;
  color: var(--color-slate-900);
  cursor: pointer;
}

.mobile-nav-toggle svg {
  width: 28px;
  height: 28px;
}

/* Footer */
.site-footer {
  background-color: var(--color-slate-950);
  color: #cbd5e1;
  padding: 5rem 0 2rem 0;
  border-top: 1px solid var(--color-slate-850);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 4rem;
}

.footer-brand h3 {
  color: #ffffff;
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.footer-brand p {
  color: #94a3b8;
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.footer-col h4 {
  color: var(--color-brass);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: #94a3b8;
  font-size: 0.92rem;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--color-slate-850);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: #64748b;
}

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

@media (max-width: 992px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
    background-color: #ffffff !important;
    z-index: 1000;
    flex-direction: column;
    padding: 1.5rem 2rem 2rem 2rem;
    gap: 0.5rem;
    box-shadow: 0 14px 40px rgba(0, 0, 0, 0.28);
    border-top: 1px solid var(--color-border);
    border-bottom: 2px solid var(--color-border);
  }
  .nav-menu.active {
    display: flex;
  }
  .nav-link {
    display: block;
    width: 100%;
    padding: 0.75rem 0;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--color-canvas-alt);
  }
  .nav-link::after {
    display: none;
  }
  .mobile-nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 3.5rem 0;
  }
  .section-header {
    margin-bottom: 2.5rem;
  }
  .site-footer {
    padding: 3.5rem 0 1.5rem 0;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 576px) {
  .container {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }
  .brand-name {
    font-size: 1.25rem;
  }
  .brand-tagline {
    font-size: 0.6rem;
  }
  .brand-logo svg {
    width: 36px;
    height: 36px;
  }
  .header-actions .btn {
    display: none;
  }
  .section {
    padding: 2.75rem 0;
  }
  .btn {
    padding: 0.75rem 1.35rem;
  }
}