/* ============================================================
   variables.css – Design Tokens, Reset, Base Typography
   ============================================================ */

/* ── Local Font: Barlow (clean geometric grotesque) ── */
@font-face {
  font-family: 'Barlow';
  src: url('../fonts/Barlow-Light.ttf') format('truetype');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Barlow';
  src: url('../fonts/Barlow-Regular.ttf') format('truetype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Barlow';
  src: url('../fonts/Barlow-Medium.ttf') format('truetype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Barlow';
  src: url('../fonts/Barlow-SemiBold.ttf') format('truetype');
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

/* ── Design Tokens ── */
:root {
  /* Colors */
  --color-bg:       #f4f1eb;
  --color-ink:      #1c1b18;
  --color-mid:      #706a60;
  --color-accent:   #c4a45a;
  --color-dark:     #161510;
  --color-dark-mid: rgba(255, 255, 255, 0.45);
  --color-line:     rgba(28, 27, 24, 0.12);
  --color-line-inv: rgba(255, 255, 255, 0.10);

  /* Typography */
  --font:      'Barlow', sans-serif;
  --fw-light:  300;
  --fw-reg:    400;
  --fw-med:    500;
  --fw-semi:   600;

  /* Spacing scale */
  --space-xs:  0.5rem;
  --space-sm:  1rem;
  --space-md:  2rem;
  --space-lg:  4rem;
  --space-xl:  6rem;
  --space-xxl: 9rem;

  /* Section horizontal padding */
  --pad-h: clamp(1.5rem, 5vw, 5rem);

  /* Transitions */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur:  0.3s;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  font-weight: var(--fw-reg);
  font-size: 1rem;
  line-height: 1.6;
  background-color: var(--color-bg);
  color: var(--color-ink);
  overflow-x: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

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

/* ── Utility: Scroll-Reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Utility: Section Labels & Titles ── */
.label {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.72rem;
  font-weight: var(--fw-med);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.label::before {
  content: '';
  display: block;
  width: 1.6rem;
  height: 1px;
  background: var(--color-accent);
}

.heading {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: var(--fw-light);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

/* ── Utility: Button ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.9rem 2rem;
  font-size: 0.8rem;
  font-weight: var(--fw-med);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  transition: background var(--dur) var(--ease),
              color var(--dur) var(--ease),
              gap var(--dur) var(--ease);
}

.btn-dark {
  background: var(--color-ink);
  color: var(--color-bg);
}

.btn-dark:hover {
  background: var(--color-accent);
  color: var(--color-ink);
  gap: 1.1rem;
}

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

.btn-accent:hover {
  background: var(--color-ink);
  color: var(--color-bg);
}