/* ============================================================
   GLOBAL.CSS
   Reset · CSS custom properties · @font-face · shared nav
   ============================================================ */

/* ------------------------------------------------------------
   @font-face — self-hosted (see /assets/fonts/)
   ------------------------------------------------------------ */

/* Display (dark sections) — Cormorant Garamond Light 300 */
@font-face {
  font-family: 'Cormorant Garamond';
  font-style: normal;
  font-weight: 300;
  font-display: swap;
  src: url('../assets/fonts/cormorant-garamond-300.woff2') format('woff2');
}

/* Body (dark sections) — Inter Regular 400 */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/inter-400.woff2') format('woff2');
}

/* Display (verses) — Playfair Display Regular */
@font-face {
  font-family: 'Playfair Display';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/playfair-400.woff2') format('woff2');
}

/* Display (verses) — Playfair Display Italic */
@font-face {
  font-family: 'Playfair Display';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/playfair-400-italic.woff2') format('woff2');
}

/* Body (verses) — Lora Regular */
@font-face {
  font-family: 'Lora';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/lora-400.woff2') format('woff2');
}

/* Body (verses) — Lora Italic */
@font-face {
  font-family: 'Lora';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/lora-400-italic.woff2') format('woff2');
}

/* Labels (studio) — DM Sans Regular 400 */
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../assets/fonts/dm-sans-400.woff2') format('woff2');
}

/* Labels (studio) — DM Sans Medium 500 */
@font-face {
  font-family: 'DM Sans';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('../assets/fonts/dm-sans-500.woff2') format('woff2');
}

/* ------------------------------------------------------------
   Design tokens
   ------------------------------------------------------------ */
:root {
  /* === GLOBAL === */
  --color-void: #0a0a0f;          /* Near-black, space base */
  --color-void-mid: #12121a;      /* Slightly lighter panels */
  --color-silver-mist: #c8c8d4;   /* Primary text on dark */
  --color-white: #f0f0f5;         /* Headings on dark */
  --color-accent-nebula: #7b6fa0; /* Muted violet — the one accent tying sections */

  /* === COSMOS SECTION === */
  --cosmos-bg: #05050d;
  --cosmos-text: #b0b0c8;
  --cosmos-caption: #6a6a80;
  --cosmos-highlight: #a89fd8;    /* Brighter violet for hover states */

  /* === VERSES SECTION === */
  --verses-bg: #f5f0e8;           /* Warm cream */
  --verses-bg-alt: #ede8df;       /* Slightly deeper for alternating rows */
  --verses-text: #2c2416;         /* Deep warm brown */
  --verses-text-secondary: #6b5c44;
  --verses-accent: #8b4a2b;       /* Terracotta — warm, literary */
  --verses-rule: #d4c9b8;         /* Hairline dividers */

  /* === STUDIO SECTION === */
  --studio-bg: #f8f8f6;           /* Near white, gallery neutral */
  --studio-text: #1a1a1a;
  --studio-text-secondary: #5a5a5a;
  --studio-accent: #2d2d2d;       /* Near-black labels */
  --studio-hover-overlay: rgba(0,0,0,0.08);

  /* === TYPOGRAPHY SCALE === */
  --step--1: clamp(0.8rem, 0.75rem + 0.25vw, 0.9rem);
  --step-0: clamp(1rem, 0.95rem + 0.25vw, 1.1rem);
  --step-1: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
  --step-2: clamp(1.5rem, 1.2rem + 1.5vw, 2rem);
  --step-3: clamp(2rem, 1.5rem + 2.5vw, 3rem);
  --step-4: clamp(2.5rem, 1.8rem + 3.5vw, 4.5rem);

  /* === SPACING === */
  --space-xs: 0.5rem;
  --space-s: 1rem;
  --space-m: 1.5rem;
  --space-l: 3rem;
  --space-xl: 6rem;
  --space-2xl: 10rem;

  /* === LAYOUT === */
  --max-content: 1280px;

  /* === FONT STACKS === */
  --font-display-dark: 'Cormorant Garamond', Georgia, serif;
  --font-body-dark: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display-verses: 'Playfair Display', Georgia, serif;
  --font-body-verses: 'Lora', Georgia, serif;
  --font-labels-studio: 'DM Sans', system-ui, -apple-system, sans-serif;
}

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

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

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  min-height: 100vh;
  font-family: var(--font-body-dark);
  font-size: var(--step-0);
  line-height: 1.6;
  color: var(--color-silver-mist);
  background: var(--color-void);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

img {
  height: auto;
}

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4 {
  font-weight: inherit;
  line-height: 1.15;
}

/* ------------------------------------------------------------
   Accessibility helpers
   ------------------------------------------------------------ */

/* Visible keyboard focus — never remove outline without a replacement */
:focus-visible {
  outline: 2px solid var(--color-accent-nebula);
  outline-offset: 3px;
}

.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 {
  position: absolute;
  top: -100px;
  left: var(--space-s);
  z-index: 200;
  padding: var(--space-xs) var(--space-s);
  color: var(--color-white);
  background: var(--color-void-mid);
  border: 1px solid var(--color-accent-nebula);
  border-radius: 4px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: var(--space-s);
}

/* ------------------------------------------------------------
   Layout helper
   ------------------------------------------------------------ */
.container {
  width: 100%;
  max-width: var(--max-content);
  margin: 0 auto;
  padding-left: var(--space-m);
  padding-right: var(--space-m);
}

/* ------------------------------------------------------------
   Shared Navigation Component
   Dark variant is default; light variant via .site-nav--light
   ------------------------------------------------------------ */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: transparent;
  transition: background 0.4s ease, backdrop-filter 0.4s ease, border-color 0.4s ease;
  border-bottom: 1px solid transparent;
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-m);
  width: 100%;
  max-width: var(--max-content);
  margin: 0 auto;
  padding: var(--space-s) var(--space-m);
}

.site-nav__logo {
  font-family: var(--font-display-dark);
  font-size: var(--step-1);
  letter-spacing: 0.12em;
  color: var(--color-white);
  white-space: nowrap;
}

.site-nav__links {
  display: none; /* hidden on mobile — hamburger used instead */
  align-items: center;
  gap: var(--space-m);
}

.site-nav__link {
  font-family: var(--font-body-dark);
  font-size: var(--step--1);
  letter-spacing: 0.18em;
  text-transform: lowercase;
  color: var(--color-silver-mist);
  padding: var(--space-xs) 0;
  position: relative;
  transition: color 0.25s ease;
}

.site-nav__link:hover {
  color: var(--color-white);
}

/* Current-section underline */
.site-nav__link[aria-current="page"] {
  color: var(--color-white);
}

.site-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: var(--color-accent-nebula);
}

/* Right slot — empty in Phase 1, reserves layout balance */
.site-nav__end {
  width: 2rem;
  flex-shrink: 0;
}

/* Scrolled state — frosted */
.site-nav.is-scrolled {
  background: var(--color-void);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: rgba(255, 255, 255, 0.06);
}

/* Hamburger toggle */
.site-nav__toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2rem;
  height: 2rem;
  z-index: 120;
}

.site-nav__toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-white);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.site-nav.is-menu-open .site-nav__toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.site-nav.is-menu-open .site-nav__toggle span:nth-child(2) {
  opacity: 0;
}
.site-nav.is-menu-open .site-nav__toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Full-screen overlay menu (mobile) */
.site-nav__overlay {
  position: fixed;
  inset: 0;
  z-index: 110;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-l);
  background: var(--color-void);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.site-nav.is-menu-open .site-nav__overlay {
  opacity: 1;
  visibility: visible;
}

.site-nav__overlay a {
  font-family: var(--font-display-dark);
  font-size: var(--step-3);
  letter-spacing: 0.1em;
  color: var(--color-silver-mist);
  transition: color 0.25s ease;
}

.site-nav__overlay a:hover,
.site-nav__overlay a[aria-current="page"] {
  color: var(--color-white);
}

/* ---- Light variant (Verses, Studio) ---- */
.site-nav--light .site-nav__logo,
.site-nav--light .site-nav__overlay a[aria-current="page"],
.site-nav--light .site-nav__overlay a:hover {
  color: var(--studio-text);
}

.site-nav--light .site-nav__link {
  color: var(--studio-text-secondary);
}

.site-nav--light .site-nav__link:hover,
.site-nav--light .site-nav__link[aria-current="page"] {
  color: var(--studio-text);
}

.site-nav--light .site-nav__toggle span {
  background: var(--studio-text);
}

.site-nav--light.is-scrolled {
  background: rgba(248, 248, 246, 0.85);
  border-bottom-color: rgba(0, 0, 0, 0.08);
}

.site-nav--light .site-nav__overlay {
  background: var(--studio-bg);
}

.site-nav--light .site-nav__overlay a {
  color: var(--studio-text-secondary);
}

/* When the mobile menu is open, force hamburger bars to overlay colour */
.site-nav--light.is-menu-open .site-nav__toggle span {
  background: var(--studio-text);
}

/* ============================================================
   Shared Lightbox (Cosmos + Studio sections)
   ============================================================ */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox__overlay {
  position: absolute;
  inset: 0;
  background: rgba(5, 5, 13, 0.96);
}

.lightbox__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-m);
  max-width: 90vw;
  max-height: 90vh;
  padding: var(--space-m);
}

.lightbox__image {
  max-width: 100%;
  max-height: 60vh;
  object-fit: contain;
  user-select: none;
}

.lightbox__close,
.lightbox__prev,
.lightbox__next {
  position: absolute;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--color-white);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  border-radius: 4px;
  transition: background 0.25s ease, border-color 0.25s ease;
  z-index: 10;
}

.lightbox__close:hover,
.lightbox__prev:hover,
.lightbox__next:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
}

.lightbox__close {
  top: var(--space-m);
  right: var(--space-m);
}

.lightbox__prev {
  left: var(--space-m);
  top: 50%;
  transform: translateY(-50%);
}

.lightbox__next {
  right: var(--space-m);
  top: 50%;
  transform: translateY(-50%);
}

.lightbox__caption {
  font-family: var(--font-body-dark);
  font-size: var(--step--1);
  color: var(--color-silver-mist);
  text-align: center;
  max-width: 600px;
  line-height: 1.6;
}

.lightbox__caption h3 {
  font-family: var(--font-display-dark);
  font-size: var(--step-1);
  color: var(--color-white);
  margin-bottom: var(--space-xs);
}

@media (max-width: 599px) {
  .lightbox__close,
  .lightbox__prev,
  .lightbox__next {
    width: 40px;
    height: 40px;
    font-size: 1.25rem;
  }

  .lightbox__close {
    top: var(--space-s);
    right: var(--space-s);
  }

  .lightbox__prev {
    left: var(--space-s);
  }

  .lightbox__next {
    right: var(--space-s);
  }
}

/* ------------------------------------------------------------
   Shared footer
   ------------------------------------------------------------ */
.site-footer {
  background: var(--color-void);
  color: var(--cosmos-caption);
  text-align: center;
  padding: var(--space-l) var(--space-m);
  font-family: var(--font-body-dark);
  font-size: var(--step--1);
  letter-spacing: 0.05em;
}

.site-footer p + p {
  margin-top: var(--space-xs);
}

/* ------------------------------------------------------------
   Responsive — nav
   ------------------------------------------------------------ */
@media (min-width: 600px) {
  .site-nav__links {
    display: flex;
  }
  .site-nav__toggle,
  .site-nav__overlay {
    display: none;
  }
}