/* ========================================
   LAYOUT.CSS — Layout System
   ======================================== */

/* ——— Page Structure ——— */
.page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ——— Header / Navigation ——— */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: var(--z-fixed);
  background: var(--color-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

.header.scrolled {
  background: var(--color-bg);
  border-bottom-color: var(--color-border);
}

.header.is-header-hidden {
  transform: translateY(-100%);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--viewport-padding);
}

.header-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
  color: var(--color-text);
  text-decoration: none;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
  flex: 0 0 auto;
  color: var(--color-accent);
}

.brand-mark path {
  fill: none;
  stroke: currentColor;
  stroke-linecap: square;
  stroke-linejoin: miter;
  stroke-width: 1.7;
}

.header-logo:hover {
  color: var(--color-accent);
}

.header-nav {
  display: flex;
  flex: 1;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex: 0 0 auto;
}

body.menu-open,
body.dialog-open,
body.lightbox-open {
  overflow: hidden;
}

.header-nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.header-nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--color-text-soft);
  position: relative;
  padding: var(--space-xs) 0;
}

.header-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-accent);
  transition: width var(--transition-base) var(--ease-out-expo);
}

.header-nav-link:hover {
  color: var(--color-text);
}

.header-nav-link:hover::after,
.header-nav-link.is-active::after {
  width: 100%;
}

.header-nav-link.is-active {
  color: var(--color-text);
}

.header-nav-help {
  display: none;
}

.header-cta {
  margin-left: var(--space-sm);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 44px;
  height: 44px;
  padding: 13px 10px;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: all var(--transition-base) var(--ease-out-expo);
  transform-origin: center;
}

.mobile-menu-toggle.is-open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.mobile-menu-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.is-open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

@media (max-width: 768px) {
  .header {
    backdrop-filter: none;
  }

  .header-inner {
    max-width: 100%;
    padding: 0 var(--viewport-padding-sm);
  }

  .header-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-modal);
    display: flex;
    flex: none;
    background: var(--color-bg);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: var(--space-2xl) var(--viewport-padding-sm);
    gap: var(--space-xl);
    transform: translateX(100%);
    visibility: hidden;
    pointer-events: none;
    transition: transform var(--transition-slower) var(--ease-out-expo), visibility 0s linear 400ms;
    border-top: 1px solid var(--color-border);
    overscroll-behavior: contain;
    overflow-y: auto;
  }

  .header-nav.is-open {
    transform: translateX(0);
    visibility: visible;
    pointer-events: auto;
    transition-delay: 0s;
  }

  .header-nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-sm);
    width: 100%;
  }

  .header-nav-link {
    display: block;
    width: 100%;
    font-size: var(--text-xl);
    padding: var(--space-sm) 0;
  }

  .header-cta {
    display: none;
  }

  .header-nav-help {
    display: block;
  }

  .mobile-menu-toggle {
    display: flex;
    z-index: var(--z-tooltip);
  }

  .theme-toggle {
    width: 44px;
    height: 44px;
  }
}

/* ——— Main Content ——— */
.main {
  flex: 1;
  position: relative;
  z-index: var(--z-base);
}

/* ——— Sections ——— */
.section {
  position: relative;
  padding: var(--space-5xl) 0;
}

.section-sm {
  padding: var(--space-3xl) 0;
}

.section-lg {
  padding: var(--space-6xl) 0;
}

.section-header {
  margin-bottom: var(--space-4xl);
  max-width: 720px;
}

.section-header--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-code {
  display: inline-block;
  margin-bottom: var(--space-md);
}

.section-title {
  margin-bottom: var(--space-md);
}

.section-description {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

@media (max-width: 768px) {
  .section {
    padding: var(--space-4xl) 0;
  }

  .section-lg {
    padding: var(--space-5xl) 0;
  }

  .section-header {
    margin-bottom: var(--space-3xl);
  }
}

/* ——— Hero Section ——— */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 100vh;
  min-height: min(100svh, 980px);
  overflow: hidden;
  padding: calc(var(--header-height) + clamp(2.5rem, 6vw, 5rem)) 0 clamp(3rem, 7vw, 6rem);
}

.hero-inner {
  position: relative;
  z-index: var(--z-base);
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.6fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--viewport-padding);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero-positioning {
  max-width: 34rem;
  margin: 0 0 var(--space-lg);
  color: var(--color-text);
  font-size: clamp(1.15rem, 1.8vw, 1.55rem);
  font-weight: 600;
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-snug);
}

.hero-positioning span {
  color: var(--color-accent);
}

.hero-name {
  display: flex;
  flex-direction: column;
  margin: 0 0 var(--space-md);
  font-size: inherit;
  line-height: 0.88;
}

.hero-name-line {
  display: block;
  font-size: clamp(3.6rem, 9.5vw, 7.5rem);
  line-height: 0.88;
  letter-spacing: -0.055em;
}

.hero-name-line:last-child::after {
  content: '.';
  color: var(--color-accent);
}

.hero-name-nepali {
  margin-top: var(--space-sm);
  font-family: var(--font-serif);
  font-size: clamp(1.15rem, 2vw, 1.5rem);
  font-weight: 500;
  letter-spacing: 0;
  line-height: 1.8;
  color: var(--color-text-soft);
}

.hero-role {
  margin-top: var(--space-md);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hero-tagline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm) 0;
  margin: var(--space-xl) 0;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-wider);
  color: var(--color-text-muted);
}

.hero-tagline span + span::before {
  content: '·';
  margin: 0 var(--space-md);
  color: var(--color-border);
}

.hero-tagline span:last-child {
  color: var(--color-accent);
}

.hero-description {
  max-width: 54ch;
  margin-bottom: var(--space-2xl);
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  line-height: var(--leading-relaxed);
  color: var(--color-text-soft);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-md);
}

.hero-aside {
  justify-self: end;
  width: 100%;
  max-width: 370px;
}

.hero-card {
  position: relative;
  padding: var(--space-xl);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
}

.hero-card::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  width: 3.5rem;
  height: 3px;
  background: var(--color-accent);
}

.hero-card > .label {
  display: block;
  margin-bottom: var(--space-md);
}

.hero-facts {
  display: grid;
  margin: 0;
}

.hero-facts > div {
  padding: var(--space-sm) 0;
  border-top: 1px solid var(--color-border-light);
}

.hero-facts > div:first-child {
  padding-top: 0;
  border-top: 0;
}

.hero-facts dt {
  margin-bottom: 0.15rem;
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hero-facts dd {
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--color-text);
}

.hero-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  width: 100%;
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border-light);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
}

.hero-card-link:hover {
  color: var(--color-accent-hover);
}

@media (max-width: 1024px) {
  .hero {
    min-height: auto;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .hero-aside {
    justify-self: start;
    max-width: 560px;
  }
}

@media (max-width: 768px) {
  .hero {
    padding: calc(var(--header-height) + var(--space-2xl)) 0 var(--space-3xl);
  }

  .hero-inner {
    padding: 0 var(--viewport-padding-sm);
  }

  .hero-name-line {
    font-size: clamp(3rem, 15vw, 4.6rem);
  }

  .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-cta .btn {
    width: 100%;
  }

  .hero-aside {
    max-width: none;
  }

  .hero-card {
    padding: var(--space-lg);
  }
}

/* ——— Footer ——— */
.footer {
  --footer-bg: #17130f;
  --footer-text: #f5f0e8;
  --footer-muted: #c3bbb1;
  --footer-accent: #d18a74;
  position: relative;
  z-index: var(--z-base);
  background: var(--footer-bg);
  color: var(--footer-text);
  padding: var(--space-4xl) 0 var(--space-2xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand {
  max-width: 320px;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  color: var(--footer-text);
  font-size: var(--text-xl);
  font-weight: 700;
  letter-spacing: var(--tracking-tight);
}

.footer-logo:hover {
  color: var(--footer-accent);
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--footer-muted);
  line-height: var(--leading-relaxed);
}

.footer-nav-title {
  margin-bottom: var(--space-md);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--footer-accent);
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0.25rem 0;
  font-size: var(--text-sm);
  color: var(--footer-muted);
  transition: color var(--transition-fast);
}

.footer-nav-link:hover {
  color: var(--footer-text);
}

.footer-bottom {
  padding-top: var(--space-2xl);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
}

.footer-copyright {
  font-size: var(--text-xs);
  color: var(--footer-muted);
}

.footer-social {
  display: flex;
  gap: var(--space-sm);
}

.footer-social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(245, 240, 232, 0.18);
  border-radius: var(--radius-full);
  color: var(--footer-muted);
  transition: all var(--transition-base);
}

.footer-social-link:hover {
  border-color: var(--footer-accent);
  color: var(--footer-text);
  background: rgba(201, 122, 101, 0.12);
}

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }

  .footer-brand {
    grid-column: span 2;
    max-width: none;
  }
}

@media (max-width: 640px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .footer-brand {
    grid-column: span 1;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

/* ——— Media Queries for Layout ——— */
@media (max-width: 1024px) {
  .container {
    max-width: 100%;
  }
}