/* ===================================================================
   BUN & BURNS — DESIGN SYSTEM
   Premium Black & Gold fast-food brand identity
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300;9..144,400;9..144,500;9..144,600;9..144,700;9..144,900&family=Inter:wght@300;400;500;600;700;800&display=swap');

:root{

  /* ---- Brand Palette ---- */
  --bb-black:        #0B0B0B;
  --bb-black-soft:   #161310;
  --bb-black-card:   #1C1814;
  --bb-black-elev:   #211C17;
  --bb-gold:         #D4AF37;
  --bb-gold-light:   #F0D375;
  --bb-gold-dim:     #8A6F22;
  --bb-ember:        #E2641D;
  --bb-ember-soft:   #C44A12;
  --bb-white:        #F8F6F1;
  --bb-gray:         #9A958C;
  --bb-gray-dim:     #5C584F;
  --bb-line:         rgba(212,175,55,0.16);

  /* ---- Gradients ---- */
  --grad-gold: linear-gradient(135deg, #F0D375 0%, #D4AF37 45%, #9A7A1F 100%);
  --grad-ember: linear-gradient(135deg, #F2A35C 0%, #E2641D 55%, #A53D0C 100%);
  --grad-fade-up: linear-gradient(180deg, transparent 0%, var(--bb-black) 85%);
  --grad-fade-down: linear-gradient(0deg, transparent 0%, var(--bb-black) 85%);
  --grad-radial-ember: radial-gradient(circle at 50% 50%, rgba(226,100,29,0.35) 0%, transparent 70%);

  /* ---- Typography ---- */
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* ---- Spacing scale ---- */
  --sp-1: 0.4rem;
  --sp-2: 0.8rem;
  --sp-3: 1.2rem;
  --sp-4: 1.8rem;
  --sp-5: 2.8rem;
  --sp-6: 4.4rem;
  --sp-7: 6.8rem;
  --sp-8: 9.6rem;

  /* ---- Radii ---- */
  --r-sm: 8px;
  --r-md: 16px;
  --r-lg: 26px;
  --r-pill: 100px;

  /* ---- Shadows ---- */
  --shadow-soft: 0 10px 40px -10px rgba(0,0,0,0.5);
  --shadow-gold: 0 12px 36px -8px rgba(212,175,55,0.28);
  --shadow-ember: 0 14px 40px -10px rgba(226,100,29,0.35);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.45);

  /* ---- Easing ---- */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);

  /* ---- Layout ---- */
  --max-width: 1280px;
  --nav-height: 84px;
}

/* ===================================================================
   RESET
   =================================================================== */

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

html{
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body{
  font-family: var(--font-body);
  background: var(--bb-black);
  color: var(--bb-white);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  font-size: 16px;
}

img, picture, video, canvas, svg{
  display: block;
  max-width: 100%;
}

a{
  color: inherit;
  text-decoration: none;
}

ul, ol{
  list-style: none;
}

button, input, textarea, select{
  font: inherit;
  color: inherit;
}

button{
  cursor: pointer;
  background: none;
  border: none;
}

h1, h2, h3, h4, h5, h6{
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.01em;
}

/* Visible focus state for accessibility — always present, never suppressed */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
[tabindex]:focus-visible{
  outline: 2px solid var(--bb-gold);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection{
  background: var(--bb-gold);
  color: var(--bb-black);
}

/* ===================================================================
   SCROLLBAR
   =================================================================== */

::-webkit-scrollbar{
  width: 10px;
}
::-webkit-scrollbar-track{
  background: var(--bb-black);
}
::-webkit-scrollbar-thumb{
  background: var(--bb-gold-dim);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover{
  background: var(--bb-gold);
}

/* ===================================================================
   UTILITY LAYOUT CLASSES
   =================================================================== */

.container{
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 clamp(1.4rem, 5vw, 3.2rem);
}

.section{
  padding: var(--sp-7) 0;
  position: relative;
}

@media (max-width: 768px){
  .section{ padding: var(--sp-6) 0; }
}

.section-head{
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--sp-6);
}

.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--bb-gold);
  margin-bottom: var(--sp-3);
}

.eyebrow::before,
.eyebrow::after{
  content: '';
  width: 22px;
  height: 1px;
  background: var(--bb-gold-dim);
}

.section-title{
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
  color: var(--bb-white);
  font-weight: 600;
}

.section-title em{
  font-style: italic;
  color: var(--bb-gold);
  font-weight: 500;
}

.section-sub{
  margin-top: var(--sp-3);
  color: var(--bb-gray);
  font-size: 1.05rem;
  max-width: 56ch;
  margin-left: auto;
  margin-right: auto;
}

.text-gold{ color: var(--bb-gold); }
.text-gray{ color: var(--bb-gray); }

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

/* Skip link for keyboard users */
.skip-link{
  position: absolute;
  left: -999px;
  top: auto;
  z-index: 10000;
  background: var(--bb-gold);
  color: var(--bb-black);
  padding: 12px 22px;
  font-weight: 700;
  border-radius: var(--r-sm);
}
.skip-link:focus{
  left: 16px;
  top: 16px;
}

/* ===================================================================
   SCROLL REVEAL — [data-reveal]
   Lightweight IntersectionObserver-driven fade/rise, no library needed
   =================================================================== */

[data-reveal]{
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
  will-change: opacity, transform;
}
[data-reveal].is-visible{
  opacity: 1;
  transform: translateY(0);
}
[data-reveal="fade"]{ transform: none; }
[data-reveal="left"]{ transform: translateX(-36px); }
[data-reveal="left"].is-visible{ transform: translateX(0); }
[data-reveal="right"]{ transform: translateX(36px); }
[data-reveal="right"].is-visible{ transform: translateX(0); }
[data-reveal="zoom"]{ transform: scale(0.92); }
[data-reveal="zoom"].is-visible{ transform: scale(1); }

@media (prefers-reduced-motion: reduce){
  [data-reveal]{ opacity: 1; transform: none; transition: none; }
}