/* ============================================================
   MATRIKA STUDIOS — COMPONENTS CSS
   Nav, Menu Overlay, Custom Cursor, Intro, Buttons, Cards
   ============================================================ */

/* ── NAV ───────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-menu);
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--content-pad);
  background: linear-gradient(180deg, rgba(6, 6, 6, 0.75) 0%, rgba(6, 6, 6, 0.35) 75%, rgba(6, 6, 6, 0.10) 100%);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
  transition: background var(--dur-mid) var(--ease-out),
              border-color var(--dur-mid) var(--ease-out),
              box-shadow var(--dur-mid) var(--ease-out);
}

.nav.nav--solid {
  background: rgba(6,6,6,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,0.10);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  height: 44px;
  flex-shrink: 0;
  opacity: 1;
  transition: opacity var(--dur-fast) var(--ease-out);
}

.nav-logo:hover { opacity: 0.75; }

.nav-logo img {
  height: 100%;
  width: auto;           /* preserve natural aspect ratio */
  max-width: none;       /* never compress horizontally */
  object-fit: contain;
  display: block;
}

/* Navigation controls wrapper */
.nav-controls {
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  pointer-events: auto;
}

/* Back button */
.nav-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: none;
  border: none;
  color: var(--matrika-white);
  cursor: pointer;
  padding: var(--sp-sm) 0;
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  transition: color var(--dur-fast) var(--ease-out);
}

.nav-back-btn:hover {
  color: var(--matrika-gold);
}

.nav-back-arrow {
  font-size: 0.8rem;
  transition: transform var(--dur-fast) var(--ease-out);
  display: inline-block;
  transform: translateY(-1px);
}

.nav-back-btn:hover .nav-back-arrow {
  transform: translateX(-4px) translateY(-1px);
}

/* Menu button */
.nav-menu-btn {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: var(--sp-sm) 0;
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--matrika-white);
  transition: color var(--dur-fast);
  cursor: pointer;
}

.nav-menu-btn:hover { color: var(--matrika-gold); }

/* Hamburger lines */
.nav-hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 22px;
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 1px;
  background: currentColor;
  transform-origin: center;
  transition: transform var(--dur-mid) var(--ease-out),
              opacity   var(--dur-fast);
}

.nav-menu-btn.is-open .nav-hamburger span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-menu-btn.is-open .nav-hamburger span:nth-child(2) {
  opacity: 0;
}
.nav-menu-btn.is-open .nav-hamburger span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ── MENU OVERLAY ──────────────────────────────────────────── */
.menu-overlay {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-menu) - 1);
  background: var(--matrika-black);
  display: flex;
  flex-direction: column;
  padding: var(--nav-h) var(--content-pad) var(--sp-2xl);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-slow) var(--ease-out),
              visibility var(--dur-slow);
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
}

.menu-overlay::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(201,0,15,0.06) 0%, transparent 60%);
  pointer-events: none;
}

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

/* Menu inner layout */
.menu-inner {
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1;
  gap: var(--sp-xl);
  padding-top: var(--sp-xl);
}



/* Menu nav list */
.menu-nav {
  list-style: none;
}

.menu-nav-item {
  overflow: hidden;
}

.menu-nav-item + .menu-nav-item {
  margin-top: var(--sp-md);
}

.menu-nav-link {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
  font-size: clamp(1.5rem, 3vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--matrika-white);
  transform: translateY(110%);
  transition: transform 0.7s var(--ease-out),
              color 0.3s;
  position: relative;
  padding-bottom: 4px;
}

.menu-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--matrika-red);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease-out);
}

.menu-nav-link:hover { color: var(--matrika-gold); }
.menu-nav-link:hover::after { transform: scaleX(1); }

/* Staggered reveal */
.menu-overlay.is-open .menu-nav-item:nth-child(1) .menu-nav-link { transform: translateY(0); transition-delay: 0.1s; }
.menu-overlay.is-open .menu-nav-item:nth-child(2) .menu-nav-link { transform: translateY(0); transition-delay: 0.16s; }
.menu-overlay.is-open .menu-nav-item:nth-child(3) .menu-nav-link { transform: translateY(0); transition-delay: 0.22s; }
.menu-overlay.is-open .menu-nav-item:nth-child(4) .menu-nav-link { transform: translateY(0); transition-delay: 0.28s; }
.menu-overlay.is-open .menu-nav-item:nth-child(5) .menu-nav-link { transform: translateY(0); transition-delay: 0.34s; }
.menu-overlay.is-open .menu-nav-item:nth-child(6) .menu-nav-link { transform: translateY(0); transition-delay: 0.40s; }

/* Menu secondary / sub-nav */
.menu-sub {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
  transition-delay: 0.45s;
}

.menu-overlay.is-open .menu-sub {
  opacity: 1;
  transform: translateY(0);
}

.menu-sub-link {
  font-family: var(--font-ui);
  font-size: 0.65rem;
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--matrika-muted);
  transition: color var(--dur-fast);
}

.menu-sub-link:hover { color: var(--matrika-white); }

/* Menu footer */
.menu-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: var(--border-dim);
  padding-top: var(--sp-lg);
  opacity: 0;
  transition: opacity 0.5s var(--ease-out);
  transition-delay: 0.5s;
}

.menu-overlay.is-open .menu-footer { opacity: 1; }

/* Language selector */
.lang-selector {
  display: flex;
  gap: var(--sp-md);
  list-style: none;
}

.lang-btn {
  font-family: var(--font-ui);
  font-size: 0.6rem;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--matrika-muted);
  padding: var(--sp-xs) 0;
  border-bottom: 1px solid transparent;
  transition: color var(--dur-fast), border-color var(--dur-fast);
  cursor: pointer;
  background: none;
  border: none;
  border-bottom: 1px solid transparent;
}

.lang-btn:hover,
.lang-btn.is-active {
  color: var(--matrika-white);
  border-bottom-color: var(--matrika-red);
}

.menu-contact-hint {
  font-family: var(--font-ui);
  font-size: 0.6rem;
  letter-spacing: var(--ls-wide);
  color: var(--matrika-muted);
  text-transform: uppercase;
}

/* ── MINIMAL INTRO SCREEN ──────────────────────────────────────────── */
.intro {
  position: fixed;
  inset: 0;
  z-index: var(--z-intro);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  pointer-events: auto;
}

/* Solid black background panel behind the logo */
.intro-bg {
  position: absolute;
  inset: 0;
  background: var(--matrika-black);
  z-index: 0;
}

/* Content wrapper — centered logo */
.intro-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transform: scale(1.04);
  will-change: opacity, transform;
}

/* Horizontal logo inside intro */
.intro-logo-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
}

.intro-logo-img {
  /* Natural aspect ratio: 2461×1008 ≈ 2.44:1 */
  width: clamp(200px, 30vw, 360px);
  height: auto;
  object-fit: contain;
  display: block;
}

/* Intro exit split panels — slide apart to reveal homepage */
.intro-exit-top,
.intro-exit-bottom {
  position: absolute;
  left: 0;
  right: 0;
  height: 50vh;
  background: var(--matrika-black);
  z-index: 1;
  will-change: transform;
}

.intro-exit-top { top: 0; transform-origin: top; }
.intro-exit-bottom { bottom: 0; transform-origin: bottom; }

/* ── CUSTOM CURSOR ─────────────────────────────────────────── */
.cursor {
  position: fixed;
  top: 0;
  left: 0;
  pointer-events: none;
  z-index: var(--z-cursor);
  mix-blend-mode: difference;
  will-change: transform;
}

.cursor-ring {
  position: absolute;
  top: -12px;
  left: -12px;
  width: 24px;
  height: 24px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  transition: width 0.3s var(--ease-out),
              height 0.3s var(--ease-out),
              top 0.3s var(--ease-out),
              left 0.3s var(--ease-out),
              border-color 0.2s,
              opacity 0.2s;
}

.cursor-dot {
  position: absolute;
  top: -2.5px;
  left: -2.5px;
  width: 5px;
  height: 5px;
  background: var(--matrika-white);
  border-radius: 50%;
  transition: transform 0.2s var(--ease-out),
              background 0.2s;
}

/* Cursor states */
.cursor.is-hovering .cursor-ring,
.cursor.is-link .cursor-ring {
  width: 32px;
  height: 32px;
  top: -16px;
  left: -16px;
  border-color: rgba(255, 255, 255, 0.4);
}

.cursor.is-hovering .cursor-dot,
.cursor.is-link .cursor-dot {
  transform: scale(1.5);
}

/* Hide on touch devices */
@media not all and (hover: hover) and (pointer: fine) {
  .cursor { display: none !important; }
}

/* ── PAGE TRANSITION CURTAIN ───────────────────────────────── */
.page-curtain {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-intro) - 1);
  background: var(--matrika-black);
  transform: scaleY(0);
  transform-origin: bottom;
  pointer-events: none;
}

.page-curtain.is-entering {
  animation: curtain-in var(--dur-page) var(--ease-in-out) forwards;
}

.page-curtain.is-exiting {
  transform: scaleY(1);
  transform-origin: top;
  animation: curtain-out var(--dur-page) var(--ease-in-out) forwards;
}

/* ── BUTTONS ───────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: var(--sp-md) var(--sp-xl);
  font-family: var(--font-ui);
  font-size: 0.65rem;
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  border: 1px solid var(--matrika-white);
  color: var(--matrika-white);
  background: transparent;
  cursor: pointer;
  transition: background var(--dur-fast), color var(--dur-fast), border-color var(--dur-fast);
  white-space: nowrap;
}

.btn:hover {
  background: var(--matrika-white);
  color: var(--matrika-black);
}

.btn--red {
  border-color: var(--matrika-red);
  color: var(--matrika-white);
}

.btn--red:hover {
  background: var(--matrika-red);
  color: var(--matrika-white);
  border-color: var(--matrika-red);
}

.btn--ghost {
  border-color: rgba(255,255,255,0.2);
  color: var(--matrika-muted);
}

.btn--ghost:hover {
  border-color: var(--matrika-white);
  color: var(--matrika-white);
  background: transparent;
}

/* Arrow button */
.btn-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-md);
  font-family: var(--font-ui);
  font-size: 0.65rem;
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--matrika-white);
  transition: color var(--dur-fast), gap var(--dur-fast);
}

.btn-arrow::after {
  content: '→';
  font-size: 1rem;
  transition: transform var(--dur-fast) var(--ease-out);
}

.btn-arrow:hover { color: var(--matrika-gold); gap: var(--sp-lg); }
.btn-arrow:hover::after { transform: translateX(4px); }

/* ── INNER PAGE HEADER ─────────────────────────────────────── */
.page-header {
  padding: calc(var(--nav-h) + var(--sp-4xl)) var(--content-pad) var(--sp-2xl);
  border-bottom: var(--border-dim);
}

.page-header-label {
  font-family: var(--font-ui);
  font-size: 0.6rem;
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--matrika-gold);
  margin-bottom: var(--sp-md);
  display: block;
}

.page-header-number {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--matrika-muted);
  margin-bottom: var(--sp-lg);
}

/* ── FOOTER ────────────────────────────────────────────────── */
.site-footer {
  padding: var(--sp-2xl) var(--content-pad);
  border-top: var(--border-dim);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-lg);
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--matrika-muted);
}

.footer-copy {
  font-family: var(--font-ui);
  font-size: 0.6rem;
  letter-spacing: var(--ls-wide);
  color: var(--matrika-muted);
  text-align: right;
}

.footer-copy span { color: var(--matrika-gold); }

/* ── SIGNATURE "A" SYSTEM ──────────────────────────────────── */
/*
  The Matrika A swap: a span wraps the "A" character.
  Normal state: shows the text character.
  Hover state on parent: shows the Matrika A image.
  The A images have dark backgrounds — we use mix-blend-mode: screen
  on dark backgrounds to make the bg transparent.
*/
.matrika-a-swap {
  position: relative;
  display: inline-block;
  /* Width matches the character width naturally */
}

.matrika-a-char {
  /* The normal text character */
  display: inline-block;
  transition: opacity 0.35s var(--ease-out);
}

.matrika-a-img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  height: 1.15em;
  width: auto;
  opacity: 0;
  mix-blend-mode: screen;
  transition: opacity 0.45s var(--ease-out),
              transform 0.45s var(--ease-out);
  transform: translate(-50%, -50%) scale(0.85);
  pointer-events: none;
}

/* When parent world is hovered */
.home-world:hover .matrika-a-char {
  opacity: 0;
}

.home-world:hover .matrika-a-img {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

/* ── "COMING SOON" BLOCK ──────────────────────────────────── */
.coming-soon {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--sp-lg);
  padding: var(--sp-2xl) 0;
  opacity: 0.5;
}

.coming-soon-label {
  font-family: var(--font-ui);
  font-size: 0.6rem;
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--matrika-gold);
}

.coming-soon-text {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2vw, 1.5rem);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
}

/* ── EXPERTISE LIST ITEM ───────────────────────────────────── */
.expertise-item {
  display: grid;
  grid-template-columns: 60px 1fr auto;
  align-items: center;
  gap: var(--sp-xl);
  padding: var(--sp-xl) 0 var(--sp-xl) 24px;
  border-bottom: var(--border-dim);
  cursor: pointer;
  transition: border-color var(--dur-mid);
  position: relative;
  overflow: hidden;
}

.expertise-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--matrika-red);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--dur-mid) var(--ease-out);
}

.expertise-item:hover::before { transform: scaleY(1); }
.expertise-item:hover { border-bottom-color: rgba(255,255,255,0.15); }

.expertise-num {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--matrika-muted);
  letter-spacing: var(--ls-wide);
}

.expertise-name {
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
  font-size: clamp(1.4rem, 3.5vw, 3rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--matrika-white);
  transition: color var(--dur-fast);
}

.expertise-item:hover .expertise-name,
.expertise-item.is-expanded .expertise-name {
  color: var(--matrika-gold);
}

.expertise-title-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.expertise-main-desc {
  font-family: var(--font-ui);
  font-size: clamp(0.78rem, 1.1vw, 0.92rem);
  font-weight: var(--fw-light);
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: rgba(255, 255, 255, 0.55);
  max-width: 680px;
  margin: 0;
  padding: 0;
  transition: color var(--dur-fast);
}

.expertise-item:hover .expertise-main-desc {
  color: rgba(255, 255, 255, 0.75);
}

/* Atmospheric Canvas */
#expertise-atmosphere-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  width: 100%;
  height: 100%;
  display: block;
}

.expertise-arrow {
  font-size: 1.1rem;
  color: var(--matrika-muted);
  transform: translateX(-8px) rotate(0deg);
  opacity: 0;
  transition: transform var(--dur-mid) var(--ease-out), opacity var(--dur-mid), color var(--dur-fast);
}

.expertise-item:hover .expertise-arrow {
  transform: translateX(0) rotate(0deg);
  opacity: 1;
  color: var(--matrika-red);
}

.expertise-item.is-expanded .expertise-arrow {
  transform: translateX(0) rotate(90deg);
  opacity: 1;
  color: var(--matrika-red);
}

.expertise-desc {
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--matrika-muted);
  letter-spacing: var(--ls-wide);
  max-width: 340px;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--dur-slow) var(--ease-out), opacity var(--dur-slow);
  opacity: 0;
  grid-column: 2;
  padding-bottom: 0;
}

.expertise-item.is-expanded .expertise-desc {
  max-height: 80px;
  opacity: 1;
  padding-bottom: var(--sp-sm);
}

.expertise-subservices {
  grid-column: 2 / -1;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height var(--dur-slow) var(--ease-out), opacity var(--dur-slow), padding var(--dur-slow);
  padding-top: 0;
}

.expertise-item.is-expanded .expertise-subservices {
  max-height: 600px;
  opacity: 1;
  padding-top: var(--sp-md);
  padding-bottom: var(--sp-sm);
}

.expertise-sub-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin: 0;
  padding: 0;
}

.expertise-sub-item {
  font-family: var(--font-ui);
  font-size: clamp(0.72rem, 1.1vw, 0.85rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.75);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  transition: border-color 0.3s, color 0.3s, background 0.3s;
}

.expertise-sub-item:hover {
  border-color: rgba(182, 153, 83, 0.4);
  color: var(--matrika-gold);
  background: rgba(182, 153, 83, 0.06);
}

.sub-bullet {
  color: var(--matrika-red);
  font-size: 0.85em;
}

/* ── WORKS GRID ────────────────────────────────────────────── */
.works-item {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-2xl);
  align-items: center;
  padding: var(--sp-3xl) 0;
  border-bottom: var(--border-dim);
}

.works-item:nth-child(even) { direction: rtl; }
.works-item:nth-child(even) > * { direction: ltr; }

.works-visual {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
  background: var(--matrika-surface);
}

.works-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s var(--ease-out);
}

.works-item:hover .works-visual img {
  transform: scale(1.04);
}

.works-info {
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
}

.works-num {
  font-family: var(--font-display);
  font-size: 0.65rem;
  color: var(--matrika-muted);
  letter-spacing: var(--ls-wider);
}

.works-title {
  font-family: var(--font-display);
  font-weight: var(--fw-semibold);
  font-size: clamp(1.5rem, 3vw, 3rem);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.0;
}

.works-meta {
  display: flex;
  gap: var(--sp-lg);
  font-family: var(--font-ui);
  font-size: 0.6rem;
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--matrika-muted);
}

.works-category {
  color: var(--matrika-gold);
}