/* =============================================================================
   global.css — Radiant Light Studios
   Shared styles used across ALL pages. Component and page-specific styles
   live in their own files. This file imports the token layer and applies
   resets, base styles, and reusable utility classes.
   ============================================================================= */

@import './design-system.css';

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

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

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

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

button {
  cursor: pointer;
}

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

/* =============================================================================
   BASE BODY
   ============================================================================= */

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.6;
  transition: background-color 0.8s ease, color 0.8s ease;
}

/* =============================================================================
   ACCESSIBILITY — Skip Navigation
   ============================================================================= */

.rls-skip-nav {
  position: absolute;
  top: -100%;
  left: var(--space-2);
  z-index: var(--z-nav);
  padding: var(--space-1) var(--space-3);
  background: var(--color-accent);
  color: var(--color-luminous);
  font-family: var(--font-body);
  font-size: var(--type-small);
  font-weight: 400;
  letter-spacing: 0.06em;
  border-radius: 100px;
  transition: top var(--dur-fast) var(--ease-standard);
  white-space: nowrap;
}

.rls-skip-nav:focus {
  top: var(--space-2);
}

/* =============================================================================
   FILM GRAIN OVERLAY
   Applied globally via body::after. Adds subtle photographic texture.
   SVG uses feTurbulence fractalNoise + feColorMatrix desaturation.
   Tiled at 200×200px, opacity 0.025 — barely perceptible, felt not seen.
   ============================================================================= */

body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: var(--z-grain);
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='grain'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23grain)'/%3E%3C/svg%3E");
  background-size: 200px 200px;
  background-repeat: repeat;
}

/* =============================================================================
   NAVIGATION
   ============================================================================= */

.rls-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4) var(--space-6);
  background: transparent;
  transition: background-color var(--dur-medium) var(--ease-standard);
}

/* Frosted glass on scroll */
.rls-nav--scrolled {
  background: oklch(from var(--color-bg) l c h / 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.rls-nav__logo {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.1rem;
  color: var(--color-text);
  letter-spacing: 0.02em;
  transition: opacity var(--dur-fast) var(--ease-standard);
}

.rls-nav__logo:hover {
  opacity: 0.75;
}

.rls-nav__links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  list-style: none;
}

.rls-nav__link {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: var(--type-label);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text);
  opacity: 0.9;
  transition: opacity var(--dur-fast) var(--ease-standard);
}

.rls-nav__link:hover {
  opacity: 1;
}

.rls-nav__link--cta {
  color: var(--color-accent);
  opacity: 1;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
}

.rls-nav__link--cta:hover {
  opacity: 0.8;
}

/* ---- Mobile nav — hamburger + fullscreen overlay below 768px ---- */

/* Hamburger button — hidden on desktop, injected by nav.js */
.rls-nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 10002;
  position: relative;
}

.rls-nav__toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: transform 0.3s var(--ease-spring), opacity 0.2s ease;
}

/* Animate to X when open */
.rls-nav-open .rls-nav__toggle-bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.rls-nav-open .rls-nav__toggle-bar:nth-child(2) {
  opacity: 0;
}
.rls-nav-open .rls-nav__toggle-bar:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

@media (max-width: 767px) {
  .rls-nav {
    padding: var(--space-3) var(--space-4);
  }

  .rls-nav__toggle {
    display: block;
  }

  /* Links become fullscreen overlay */
  .rls-nav__links {
    position: fixed;
    inset: 0;
    z-index: 10000;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-8);
    background: oklch(from var(--color-bg) l c h / 0.97);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
  }

  /* Open state */
  .rls-nav-open .rls-nav__links {
    opacity: 1;
    visibility: visible;
  }

  .rls-nav-open .rls-nav__link {
    font-size: var(--type-body);
    opacity: 0.8;
  }

  .rls-nav-open .rls-nav__link--cta {
    opacity: 1;
    font-size: var(--type-body);
  }
}

/* =============================================================================
   FOOTER
   ============================================================================= */

.rls-footer {
  padding: var(--space-8) var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: var(--space-4);
  border-top: 1px solid oklch(from var(--color-text) l c h / 0.08);
}

.rls-footer__brand {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1rem;
  color: var(--color-text);
}

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

.rls-footer__link {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: var(--type-label);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text);
  opacity: 0.4;
  transition: opacity var(--dur-fast) var(--ease-standard);
}

.rls-footer__link:hover {
  opacity: 0.8;
}

.rls-footer__copy {
  font-size: var(--type-label);
  color: var(--color-text);
  opacity: 0.3;
  letter-spacing: 0.08em;
  width: 100%;
}

.rls-footer__credit {
  font-family: 'DM Sans', sans-serif;
  font-weight: 300;
  font-size: 0.6rem;
  opacity: 0.25;
  margin-top: 0.5rem;
}

.rls-footer__credit a {
  opacity: 0.7;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
  padding-bottom: 1px;
}

@media (max-width: 767px) {
  .rls-footer {
    padding: var(--space-6) var(--space-4);
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .rls-footer__nav {
    gap: 1.5rem;
  }
}

/* Custom cursor removed — not used in production */

/* =============================================================================
   LINE REVEAL ANIMATION
   Used for display headings. Wrap each line in .rls-line-wrap > .rls-line.
   reveal.js adds .rls-in when the element scrolls into view.
   ============================================================================= */

.rls-line-wrap {
  overflow: hidden;
}

.rls-line {
  display: block;
  transform: translateY(110%);
  transition: transform var(--dur-slow) var(--ease-spring);
}

.rls-line.rls-in {
  transform: translateY(0);
}

/* Stagger delays — supports up to 4 lines */
.rls-line:nth-child(1) { transition-delay: 0s; }
.rls-line:nth-child(2) { transition-delay: 0.08s; }
.rls-line:nth-child(3) { transition-delay: 0.16s; }
.rls-line:nth-child(4) { transition-delay: 0.24s; }

/* =============================================================================
   GLOBAL INTERACTION STATES
   ============================================================================= */

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

::selection {
  background: oklch(from var(--color-accent) l c h / 0.15);
  color: var(--color-text);
}

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

/* Layout container */
.rls-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (max-width: 767px) {
  .rls-container {
    padding: 0 var(--space-4);
  }
}

/* Standard vertical-scroll page wrapper */
.rls-inner-page {
  overflow-x: hidden;
}

/* Section spacing */
.rls-section {
  padding: var(--space-16) var(--space-6);
}

@media (max-width: 767px) {
  .rls-section {
    padding: var(--space-10) var(--space-4);
  }
}

/* Eyebrow label above headlines */
.rls-eyebrow {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: var(--type-label);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-3);
}

/* Display heading — Cormorant italic, largest editorial scale */
.rls-display {
  font-family: var(--font-display);
  font-size: var(--type-display);
  font-style: italic;
  line-height: 1.05;
  letter-spacing: 0.01em;
  color: var(--color-text);
}

/* Section headline */
.rls-headline {
  font-family: var(--font-display);
  font-size: var(--type-headline);
  font-style: italic;
  line-height: 1.15;
  color: var(--color-text);
}

/* Body copy */
.rls-body {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: var(--type-body);
  line-height: 1.75;
  color: var(--color-text);
  opacity: 0.7;
}

/* CTA link — always inline, with animated arrow gap */
.rls-cta {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--type-label);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
  transition: gap 0.3s var(--ease-standard), opacity 0.2s ease;
}

.rls-cta:hover {
  gap: var(--space-3);
  opacity: 0.8;
}

/* =============================================================================
   PHOTO SHIELD — Protection layer wrapping gallery images
   Prevents right-click save, drag, and long-press on mobile.
   ============================================================================= */

.rls-img-wrap {
  position: relative;
  overflow: hidden;
}

.rls-img-shield {
  position: absolute;
  inset: 0;
  z-index: 2;
  cursor: default;
  /* Transparent — purely an interaction blocker */
}

.rls-img-wrap img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  pointer-events: none;
  user-select: none;
  -webkit-user-drag: none;
}

/* =============================================================================
   PRELOADER
   Shown on page load, hidden once assets are ready.
   JS adds .rls-hidden to fade it out and then removes it from the DOM.
   ============================================================================= */

#rls-preloader {
  position: fixed;
  inset: 0;
  background: var(--color-bg);
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

#rls-preloader.rls-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.rls-preloader__logo {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.5rem;
  color: var(--color-text);
  opacity: 0;
  animation: preloaderFade 0.8s var(--ease-spring) 0.2s forwards;
}

@keyframes preloaderFade {
  to {
    opacity: 1;
  }
}