/* ============================================================
   main.css — CSS custom properties and global base styles
   ============================================================ */

/* ——— Custom Properties ——— */
:root {
  --color-bg:        #000000;
  --color-text:      #ffffff;
  --font-heading:    'Cormorant Garamond', serif;
  --font-body:       'Raleway', sans-serif;
  --sidebar-width:   220px;
  --transition-slow: 0.6s ease;
  --transition-fast: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  min-height: 100%;
  overflow-x: hidden;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-weight: 300;
  overflow-x: hidden;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

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

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

/* ——— Grain Texture Overlay (all pages) ——— */
/* SVG feTurbulence noise; drifts slowly to animate the black */
.grain-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23g)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
  animation: grainShift 8s steps(2) infinite;
}

@keyframes grainShift {
  0%   { transform: translate(0, 0); }
  10%  { transform: translate(-4%, -8%); }
  20%  { transform: translate(-12%, 4%); }
  30%  { transform: translate(6%, -20%); }
  40%  { transform: translate(-4%, 20%); }
  50%  { transform: translate(-12%, 8%); }
  60%  { transform: translate(12%, 0); }
  70%  { transform: translate(0, 12%); }
  80%  { transform: translate(2%, 28%); }
  90%  { transform: translate(-8%, 8%); }
  100% { transform: translate(0, 0); }
}

/* ——— Placeholder page layout ——— */
.page-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  flex-direction: column;
  text-align: center;
  gap: 1.5rem;
  padding: 2rem;
}

.page-placeholder h1 {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 8vw, 7rem);
  font-weight: 300;
  letter-spacing: 0.15em;
}

.page-placeholder p {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  opacity: 0.4;
}

/* ——— Hamburger button ——— */
.hamburger {
  display: none;
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 1000;
  flex-direction: column;
  gap: 5px;
  padding: 10px 12px;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: 0; /* sharp/minimal — no rounding */
}

.hamburger-line {
  display: block;
  width: 22px;
  height: 1.5px;
  background: rgba(255, 255, 255, 0.85);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  transform-origin: center;
}

.hamburger.active .hamburger-line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.hamburger.active .hamburger-line:nth-child(2) {
  opacity: 0;
}
.hamburger.active .hamburger-line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ——— Mobile fullscreen overlay menu ——— */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.96);
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3rem;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.35s ease, visibility 0.35s ease;
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
  pointer-events: all;
}

.mobile-close {
  position: absolute;
  top: 20px;
  right: 24px;
  font-size: 1.5rem;
  opacity: 0.6;
  transition: opacity var(--transition-fast);
  line-height: 1;
}
.mobile-close:hover { opacity: 1; }

/* ——— Logo inside mobile menu ——— */
.mobile-menu-logo-link {
  display: block;
  line-height: 0; /* collapse inline whitespace */
}

.mobile-menu-logo {
  width: 80px;
  height: 80px;
  object-fit: contain;
  clip-path: circle(38% at 50% 47%);
  filter: grayscale(100%) brightness(0.9);
  transition: opacity var(--transition-fast);
}

.mobile-menu-logo-link:hover .mobile-menu-logo {
  opacity: 0.7;
}

/* ——— Mobile nav links — Cormorant Garamond, large ——— */
.mobile-nav {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.8rem;
}

.mobile-nav-link {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  color: var(--color-text);
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

/* Stagger-reveal when menu opens */
.mobile-menu.open .mobile-nav-link:nth-child(1) { transition-delay:   0ms; }
.mobile-menu.open .mobile-nav-link:nth-child(2) { transition-delay:  80ms; }
.mobile-menu.open .mobile-nav-link:nth-child(3) { transition-delay: 160ms; }
.mobile-menu.open .mobile-nav-link:nth-child(4) { transition-delay: 240ms; }

.mobile-menu.open .mobile-nav-link {
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav-link:hover { opacity: 0.5; }

/* ——— Responsive breakpoints ——— */
@media (max-width: 767px) {
  .sidebar,
  .sidebar-edge {
    display: none !important;
  }
  .hamburger {
    display: flex;
  }
}

@media (min-width: 768px) {
  .mobile-menu,
  .hamburger {
    display: none !important;
  }
}