/* ==========================================================================
   Caffenation — Design System
   Premium, minimal, confident. Warm neutral palette.
   Single source of truth for palette, type scale and spacing.
   ========================================================================== */

:root {
  /* ---------------------------------------------------------------------
     Color palette — warm neutrals with a single roasted accent
     --------------------------------------------------------------------- */
  --color-cream:        #F7F3EC;
  --color-paper:        #FFFDF9;
  --color-sand:         #EDE6DA;
  --color-clay:         #D8CCBA;
  --color-stone:        #B7AA96;
  --color-taupe:        #8C7F6B;
  --color-espresso:     #2E2721;
  --color-ink:          #1C1712;
  --color-charcoal:     #4A4038;

  --color-accent:       #C4622D;
  --color-accent-dark:  #9E4A1E;
  --color-accent-soft:  #E8C4A8;

  --color-success:      #5C7A52;
  --color-danger:       #A8402F;

  /* Semantic surfaces */
  --bg:                 var(--color-cream);
  --bg-elevated:        var(--color-paper);
  --bg-inverse:         var(--color-espresso);
  --bg-muted:           var(--color-sand);

  --text:               var(--color-ink);
  --text-muted:         var(--color-taupe);
  --text-inverse:       var(--color-cream);
  --text-accent:        var(--color-accent);

  --border:             rgba(46, 39, 33, 0.12);
  --border-strong:      rgba(46, 39, 33, 0.28);

  /* ---------------------------------------------------------------------
     Typography — editorial serif display, quiet grotesque body
     --------------------------------------------------------------------- */
  --font-display: "Canela", "Playfair Display", "Times New Roman", Georgia, serif;
  --font-body:    "Inter", "Neue Haas Grotesk", -apple-system, BlinkMacSystemFont,
                  "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono:    "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  /* Type scale (1.25 major third, fluid) */
  --text-xs:   0.75rem;
  --text-sm:   0.875rem;
  --text-base: 1rem;
  --text-md:   1.125rem;
  --text-lg:   1.375rem;
  --text-xl:   1.75rem;
  --text-2xl:  2.25rem;
  --text-3xl:  3rem;
  --text-4xl:  clamp(3rem, 6vw, 4.5rem);
  --text-5xl:  clamp(3.75rem, 9vw, 7rem);

  --leading-tight:  1.05;
  --leading-snug:   1.2;
  --leading-normal: 1.5;
  --leading-loose:  1.7;

  --tracking-tight:  -0.02em;
  --tracking-normal: 0;
  --tracking-wide:   0.08em;
  --tracking-wider:  0.16em;

  --weight-regular: 400;
  --weight-medium:  500;
  --weight-semibold: 600;
  --weight-bold:    700;

  /* ---------------------------------------------------------------------
     Spacing — 4px base, generous rhythm
     --------------------------------------------------------------------- */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.5rem;
  --space-6:  2rem;
  --space-7:  2.5rem;
  --space-8:  3rem;
  --space-9:  4rem;
  --space-10: 5rem;
  --space-11: 7rem;
  --space-12: 9rem;

  --section-y: clamp(4.5rem, 9vw, 8rem);
  --container: 1240px;
  --container-narrow: 760px;
  --gutter: clamp(1.25rem, 4vw, 3rem);

  /* ---------------------------------------------------------------------
     Layout — grid, radius, shadow, motion
     --------------------------------------------------------------------- */
  --grid-columns: 12;
  --grid-gap: clamp(1rem, 2.5vw, 2rem);

  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   16px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(28, 23, 18, 0.05);
  --shadow-md: 0 8px 24px -12px rgba(28, 23, 18, 0.18);
  --shadow-lg: 0 24px 60px -28px rgba(28, 23, 18, 0.28);

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 160ms;
  --duration-base: 280ms;
  --duration-slow: 600ms;

  --z-nav: 100;
  --z-overlay: 200;
  --z-modal: 300;
}

/* ==========================================================================
   Base
   ========================================================================== */

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

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

body {
  margin: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  line-height: var(--leading-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  margin: 0 0 var(--space-4);
  font-family: var(--font-display);
  font-weight: var(--weight-regular);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-espresso);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-xl); }
h4 { font-size: var(--text-md); font-family: var(--font-body); font-weight: var(--weight-semibold); }

p {
  margin: 0 0 var(--space-4);
  max-width: 68ch;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-out);
}

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

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

::selection {
  background: var(--color-accent-soft);
  color: var(--color-ink);
}

/* ==========================================================================
   Layout primitives
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

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

.section {
  padding-block: var(--section-y);
}

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

.section--inverse h1,
.section--inverse h2,
.section--inverse h3 { color: var(--text-inverse); }

.grid {
  display: grid;
  grid-template-columns: repeat(var(--grid-columns), minmax(0, 1fr));
  gap: var(--grid-gap);
}

.grid--cards {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.stack > * + * { margin-top: var(--space-4); }
.cluster {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-4);
}

/* ==========================================================================
   Navigation — transparent over hero, solid on scroll
   ========================================================================== */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-5);
  background: transparent;
  transition: background var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out);
}

.nav--scrolled,
.nav--solid {
  background: rgba(247, 243, 236, 0.92);
  backdrop-filter: saturate(140%) blur(12px);
  box-shadow: var(--shadow-sm);
}

.nav__logo {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.nav__links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: var(--text-sm);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  display: grid;
  align-items: end;
  min-height: 92vh;
  padding-block: var(--space-12) var(--space-10);
  background: var(--bg-inverse);
  color: var(--text-inverse);
  overflow: hidden;
}

.hero__media {
  position: absolute;
  inset: 0;
  object-fit: cover;
  width: 100%;
  height: 100%;
  opacity: 0.72;
}

.hero__inner { position: relative; z-index: 1; }

.hero__eyebrow {
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-accent-soft);
}

.hero__title {
  font-size: var(--text-5xl);
  max-width: 16ch;
  color: var(--text-inverse);
}

.hero__lede {
  font-size: var(--text-lg);
  max-width: 46ch;
  color: rgba(247, 243, 236, 0.82);
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-paper);
}

.btn--primary:hover {
  background: var(--color-accent-dark);
  color: var(--color-paper);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: inherit;
}

.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* ==========================================================================
   Cards
   ========================================================================== */

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: transform var(--duration-base) var(--ease-out),
              box-shadow var(--duration-base) var(--ease-out);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
}

.card__meta {
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--text-muted);
}

/* ==========================================================================
   Editorial / split section
   ========================================================================== */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-9);
  align-items: center;
}

@media (max-width: 860px) {
  .split { grid-template-columns: 1fr; gap: var(--space-6); }
}

.rule {
  border: 0;
  border-top: 1px solid var(--border);
  margin-block: var(--space-8);
}

.eyebrow {
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
  background: var(--color-espresso);
  color: rgba(247, 243, 236, 0.72);
  padding-block: var(--space-9) var(--space-6);
  font-size: var(--text-sm);
}

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

/* ==========================================================================
   Utilities
   ========================================================================== */

.text-muted { color: var(--text-muted); }
.text-accent { color: var(--text-accent); }
.text-center { text-align: center; }
.mx-auto { margin-inline: auto; }
.flow-tight { line-height: var(--leading-snug); }

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