/**
 * Reusable Components — Contemporary Product Studio
 * Navigation, Buttons, Cards, Metadata Chips, Footer, and Structural Placeholders.
 */

/* ==========================================================================
   Global Container Utility
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--page-pad);
  padding-right: var(--page-pad);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: rgba(14, 14, 14, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border-subtle);
  transition: background-color var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-4) var(--page-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: var(--weight-medium);
  color: var(--color-ink-primary);
  letter-spacing: var(--tracking-tight);
  text-decoration: none;
}

.brand-logo-circle {
  width: 18px;
  height: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.brand-logo-circle svg {
  width: 100%;
  height: 100%;
  display: block;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--color-ink-primary);
  color: var(--color-ink-inverted);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: var(--weight-bold);
  border-radius: var(--radius-sm);
}

.brand-title {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: clamp(1.4rem, 1.8vw, 1.65rem);
  font-weight: var(--weight-medium);
  line-height: 1.2;
  letter-spacing: -0.015em;
}

.brand-role {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-ink-muted);
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-normal);
  text-transform: uppercase;
}


.nav-menu-footer {
  display: none;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.nav-item-mobile-only {
  display: none !important;
}

.nav-link {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-medium);
  color: var(--color-ink-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out);
}

.nav-link:hover {
  color: var(--color-ink-primary);
  background-color: var(--color-surface-subtle);
}

.nav-link[aria-current="page"],
.nav-link.is-active {
  color: var(--color-ink-primary);
  background-color: var(--color-surface-subtle);
  font-weight: var(--weight-semibold);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  padding: var(--space-2);
  color: var(--color-ink-primary);
  border-radius: var(--radius-sm);
}

.nav-toggle-icon {
  width: 24px;
  height: 24px;
  display: block;
}

/* ==========================================================================
   Buttons & Interactive Elements
   ========================================================================== */

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 0.85rem 1.5rem;
  font-size: var(--text-body-sm);
  font-weight: var(--weight-medium);
  line-height: 1;
  border-radius: var(--radius-pill);
  transition: all var(--duration-fast) var(--ease-out);
  white-space: nowrap;
}

.button-primary {
  background-color: var(--color-accent-cobalt);
  color: #FFFFFF;
  border: 1px solid var(--color-accent-cobalt);
  box-shadow: 0 4px 16px rgba(255, 85, 32, 0.3);
}

.button-primary:hover {
  background-color: var(--color-accent-cobalt-hover);
  border-color: var(--color-accent-cobalt-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(255, 85, 32, 0.45);
}

.button-secondary {
  background-color: var(--color-surface-subtle);
  color: var(--color-ink-primary);
  border: 1px solid var(--color-border-default);
}

.button-secondary:hover {
  background-color: #262626;
  border-color: var(--color-border-strong);
  color: var(--color-ink-primary);
  transform: translateY(-1px);
}

.button-accent {
  background-color: var(--color-accent-cobalt);
  color: #FFFFFF;
  border: 1px solid var(--color-accent-cobalt);
  box-shadow: 0 4px 16px rgba(255, 85, 32, 0.3);
}

.button-accent:hover {
  background-color: var(--color-accent-cobalt-hover);
  border-color: var(--color-accent-cobalt-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 6px 22px rgba(255, 85, 32, 0.45);
}

.button-subtle {
  padding: var(--space-2) var(--space-3);
  color: var(--color-ink-secondary);
}

.button-subtle:hover {
  color: var(--color-ink-primary);
}

.button-icon {
  width: 16px;
  height: 16px;
  transition: transform var(--duration-fast) var(--ease-out);
}

.button:hover .button-icon {
  transform: translateX(2px);
}

/* Reusable Signature Pill CTA (Matching Homepage) */
.hero-pill-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  background-color: var(--color-accent-cobalt);
  color: #FFFFFF;
  padding: 0.375rem 1.35rem 0.375rem 0.425rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: var(--weight-medium);
  text-decoration: none;
  box-shadow: 0 6px 20px rgba(255, 85, 32, 0.32);
  transition: transform var(--duration-fast) var(--ease-out),
              background-color var(--duration-fast) var(--ease-out),
              box-shadow var(--duration-fast) var(--ease-out);
}

.hero-pill-cta:hover {
  background-color: var(--color-accent-cobalt-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 26px rgba(255, 85, 32, 0.45);
  color: #FFFFFF;
}

.hero-pill-cta-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: #FFFFFF;
  color: #0E0E0E;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--duration-fast) var(--ease-out);
}

.hero-pill-cta-icon svg {
  width: 15px;
  height: 15px;
}

.hero-pill-cta:hover .hero-pill-cta-icon {
  transform: translateX(2px);
}

/* Text Link with Editorial Arrow */
.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-body-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-accent-ink);
  transition: gap var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}

.arrow-link svg {
  width: 16px;
  height: 16px;
  transition: transform var(--duration-fast) var(--ease-out);
}

.arrow-link:hover {
  color: var(--color-ink-primary);
  gap: var(--space-3);
}

.arrow-link:hover svg {
  transform: translateX(3px);
}

/* ==========================================================================
   Badges, Chips & Meta Labels
   ========================================================================== */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 0.25rem 0.625rem;
  font-family: var(--font-mono);
  font-size: var(--text-mono-tag);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-normal);
  border-radius: var(--radius-xs);
  border: 1px solid var(--color-border-subtle);
  background-color: var(--color-surface-subtle);
  color: var(--color-ink-secondary);
}

.badge-cobalt {
  background-color: var(--color-accent-cobalt-subtle);
  border-color: var(--color-accent-cobalt);
  color: var(--color-ink-primary);
}

.badge-dark {
  background-color: var(--color-surface-dark);
  color: var(--color-ink-inverted);
  border-color: var(--color-border-dark);
}

/* Status Indicator Dot */
.status-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.3125rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: var(--weight-medium);
  border-radius: var(--radius-pill);
  background-color: var(--color-status-active-bg);
  color: var(--color-status-active-text);
  border: 1px solid var(--color-border-subtle);
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-status-active-dot);
  box-shadow: 0 0 0 2px rgba(203, 185, 164, 0.35);
  animation: pulse-dot 2.5s infinite var(--ease-in-out);
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.2); opacity: 0.75; }
}

/* ==========================================================================
   Project Teaser Cards (Homepage)
   ========================================================================== */

.project-card {
  display: block;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out),
              border-color var(--duration-normal) var(--ease-out);
}

.project-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-border-default);
  box-shadow: var(--shadow-lg);
}

.project-card-media {
  position: relative;
  background-color: var(--color-surface-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
  overflow: hidden;
  aspect-ratio: 16 / 10;
}

.project-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.project-card:hover .project-card-media img {
  transform: scale(1.018);
}

.project-card-body {
  padding: var(--space-8);
}

.project-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.project-index {
  font-family: var(--font-mono);
  font-size: var(--text-mono-tag);
  color: var(--color-accent-ink);
  font-weight: var(--weight-semibold);
}

.project-card-title {
  font-size: var(--text-h3);
  margin-bottom: var(--space-2);
  color: var(--color-ink-primary);
  transition: color var(--duration-fast) var(--ease-out);
}

.project-card:hover .project-card-title {
  color: var(--color-accent-ink);
}

.project-card-summary {
  font-size: var(--text-body);
  color: var(--color-ink-secondary);
  margin-bottom: var(--space-6);
  line-height: var(--leading-normal);
}

.project-card-details-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border-subtle);
  font-size: var(--text-body-sm);
}

.detail-item-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--color-ink-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-bottom: var(--space-1);
}

.detail-item-value {
  font-weight: var(--weight-medium);
  color: var(--color-ink-primary);
  line-height: 1.35;
}

/* ==========================================================================
   Structural Placeholder Frame
   (Visual integrity for authentic drafting — never fake screenshots)
   ========================================================================== */

.placeholder-frame {
  position: relative;
  width: 100%;
  background: linear-gradient(135deg, #FAF9F6 0%, #F4F1EA 100%);
  border: 1px dashed var(--color-border-default);
  border-radius: var(--radius-md);
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 280px;
  overflow: hidden;
}

.placeholder-grid-pattern {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(230, 218, 200, 0.45) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(230, 218, 200, 0.45) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}

.placeholder-content {
  position: relative;
  z-index: 2;
  max-width: 440px;
}

.placeholder-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.25rem 0.625rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-ink-muted);
  background-color: rgba(250, 249, 246, 0.85);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-xs);
  margin-bottom: var(--space-3);
}

.placeholder-title {
  font-family: var(--font-display);
  font-size: var(--text-h4);
  color: var(--color-ink-primary);
  margin-bottom: var(--space-2);
}

.placeholder-note {
  font-size: var(--text-body-sm);
  color: var(--color-ink-muted);
  line-height: var(--leading-normal);
}

/* ==========================================================================
   Editorial Callouts & Quotes
   ========================================================================== */

.editorial-callout {
  border-left: 3px solid var(--color-accent-cobalt);
  background-color: var(--color-surface);
  padding: var(--space-6) var(--space-8);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--space-8) 0;
  box-shadow: var(--shadow-sm);
  border-top: 1px solid var(--color-border-subtle);
  border-right: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.editorial-callout p {
  font-size: var(--text-body-lg);
  color: var(--color-ink-primary);
  line-height: var(--leading-relaxed);
}

.editorial-callout-cite {
  display: block;
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-mono-tag);
  color: var(--color-ink-muted);
}

/* ==========================================================================
   Site Footer
   ========================================================================== */

.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--space-16) 0 0;
  margin-top: var(--space-24);
  overflow-x: clip;
}

.footer-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--page-pad);
}

.footer-top {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-12);
  padding-bottom: var(--space-8);
}

.footer-huge-name-wrap {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  border-top: none;
  overflow: visible;
  padding: var(--space-2) 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-huge-name-svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
  box-sizing: border-box;
}

.footer-huge-name-svg text {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: -0.025em;
  fill: var(--color-ink-primary);
  user-select: none;
}

.footer-heading {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: #E6E6E6;
  margin-bottom: var(--space-4);
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-nav-link {
  font-size: var(--text-body-sm);
  color: #7A7A7A;
  transition: color var(--duration-fast) var(--ease-out);
}

.footer-nav-link:hover {
  color: #FFFFFF;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  font-size: var(--text-body-sm);
  color: var(--color-ink-muted);
  flex-wrap: wrap;
  gap: var(--space-4);
}

/* ==========================================================================
   Responsive Adaptations
   ========================================================================== */

@media (max-width: 860px) {
  body.nav-locked {
    overflow: hidden !important;
  }

  .site-header {
    background-color: #0E0E0E;
  }

  .nav-container {
    padding-top: var(--space-4);
    padding-bottom: var(--space-4);
  }

  /* Elegant circular close/toggle button matching Wandergates reference */
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: #FFFFFF;
    color: #0E0E0E;
    border: none;
    cursor: pointer;
    z-index: 1001;
    position: relative;
    padding: 0;
    transition: transform var(--duration-fast) var(--ease-out),
                background-color var(--duration-fast) var(--ease-out);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.4);
  }

  .nav-toggle:active {
    transform: scale(0.94);
  }

  .nav-toggle-icon {
    width: 20px;
    height: 20px;
    display: block;
    stroke: #0E0E0E;
  }

  /* Fullscreen dark overlay tray matching Wandergates reference */
  .nav-menu {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    background-color: #0E0E0E;
    z-index: 999;
    padding: 105px var(--page-pad) clamp(30px, 6vh, 48px);
    flex-direction: column;
    justify-content: space-between;
    align-items: flex-start;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1),
                visibility 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  }

  .nav-menu.is-open {
    display: flex;
    opacity: 1;
    visibility: visible;
  }

  /* Bottom line & "UTKARSH KUMAR SINGH" footer block */
  .nav-menu-footer {
    display: flex;
    flex-direction: column;
    width: 100%;
    margin-top: auto;
    padding-top: clamp(2rem, 5vh, 3.5rem);
  }

  .nav-menu-divider {
    width: 100%;
    height: 1px;
    background-color: rgba(255, 255, 255, 0.12);
    margin-bottom: var(--space-5);
  }

  .nav-menu-brand {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.12em;
    color: var(--color-ink-secondary);
    text-transform: uppercase;
  }

  /* Large editorial menu items */
  .nav-list {
    flex-direction: column;
    width: 100%;
    align-items: flex-start;
    gap: clamp(1rem, 3.5vh, 1.85rem);
    margin: 0;
    padding: 0;
  }

  .nav-list li {
    width: 100%;
  }

  .nav-item-mobile-only {
    display: block !important;
  }

  .nav-link {
    display: inline-block;
    width: auto;
    font-family: var(--font-display);
    font-size: clamp(2.35rem, 8.5vw, 3.4rem);
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.025em;
    color: var(--color-ink-primary);
    padding: 0.15rem 0;
    border-radius: 0;
    background: none !important;
    transition: color var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-out);
  }

  .nav-link:hover,
  .nav-link:focus-visible {
    color: var(--color-accent);
    transform: translateX(4px);
  }

  .nav-link[aria-current="page"],
  .nav-link.is-active {
    color: var(--color-ink-primary);
  }

  .nav-actions {
    display: none;
  }

  .footer-top {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-12) var(--space-8);
  }

  .footer-heading {
    margin-bottom: var(--space-4);
  }
}

@media (max-width: 640px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }

  .footer-heading {
    margin-bottom: var(--space-4);
    letter-spacing: var(--tracking-wider);
  }
}