/* ==========================================================================
   Nubel Digital Showcase - Design System based on design.md
   Theme: Dark Void Canvas (Constellation Floating on Black Velvet)
   ========================================================================== */

:root {
  /* Colors */
  --color-void: #000000;
  --color-bone-white: #ffffff;
  --color-ash-gray: #9a9a9a;
  --color-silver-mist: #bdbdbd;
  --color-electric-iris: #8052ff;
  --color-saffron-spark: #ffb829;
  --color-deep-verdant: #15846e;

  /* Typography — Font Family */
  --font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Typography — Scale & Line Height */
  --text-caption: 12px;
  --leading-caption: 1.5;

  --text-nav-label: 14px;
  --leading-nav-label: 1.2;
  --tracking-nav-label: 0.35px;

  --text-body: 18px;
  --leading-body: 1.5;

  --text-heading-2xs: 24px;
  --leading-heading-2xs: 1.25;
  --tracking-heading-2xs: -0.48px;

  --text-heading-xs: 27px;
  --leading-heading-xs: 1;

  --text-subheading: 36px;
  --leading-subheading: 1.2;

  --text-heading-sm: 42px;
  --leading-heading-sm: 1.2;
  --tracking-heading-sm: -1.68px;

  --text-heading: 48px;
  --leading-heading: 1.1;
  --tracking-heading: -1.68px;

  --text-heading-lg: 78px;
  --leading-heading-lg: 1.1;
  --tracking-heading-lg: -3.12px;

  --text-display: 113px;
  --leading-display: 1.1;
  --tracking-display: -4.52px;

  /* Typography — Weights */
  --weight-ultralight: 200;
  --weight-regular: 400;
  --weight-semibold: 600;
  --weight-bold: 700;

  /* Spacing Scale */
  --spacing-6: 6px;
  --spacing-12: 12px;
  --spacing-18: 18px;
  --spacing-24: 24px;
  --spacing-30: 30px;
  --spacing-36: 36px;
  --spacing-60: 60px;
  --spacing-96: 96px;
  --spacing-120: 120px;

  /* Border Radius */
  --radius-card: 24px;
  --radius-pill: 9999px;
  --radius-button: 22.5px;

  /* Layout */
  --page-max-width: 1280px;

  --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   Base Reset & Void Canvas Surface
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  background-color: var(--color-void);
  color: var(--color-bone-white);
  font-family: var(--font-family);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  position: relative;
  background-color: var(--color-void);
  color: var(--color-bone-white);
  font-family: var(--font-family);
}

/* Constellation Background Canvas */
.constellation-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 1;
  opacity: 0.6;
}

.container {
  max-width: var(--page-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-24);
  position: relative;
  z-index: 2;
}

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  z-index: 100;
  background: transparent;
  display: flex;
  align-items: center;
}

.nav-container {
  max-width: var(--page-max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--spacing-24);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-img {
  height: 48px;
  width: auto;
  transition: transform 0.3s ease;
}

.logo-link:hover .logo-img {
  transform: scale(1.04);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-18);
}

.nav-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-6);
  padding: 12px 20px;
  background: var(--color-electric-iris);
  border-radius: var(--radius-button);
  color: var(--color-bone-white);
  font-family: var(--font-family);
  font-size: var(--text-nav-label);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-nav-label);
  text-transform: uppercase;
  text-decoration: none;
  transition: var(--transition-smooth);
}

.nav-pill-btn:hover {
  filter: brightness(1.15);
  transform: translateY(-1px);
}

/* ==========================================================================
   Hero Section (Two-Column Asymmetric Rhythm)
   ========================================================================== */

.hero-section {
  width: 100%;
  padding-top: 160px;
  padding-bottom: var(--spacing-60);
  position: relative;
  overflow: visible;
  z-index: 2;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}

.hero-bg-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  opacity: 0.85;
}

.hero-content-wrapper {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: flex-start;
  text-align: left;
  width: 100%;
  padding: 0 clamp(24px, 6vw, 120px);
}

.hero-content {
  max-width: 720px;
  margin: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
}

.hero-label {
  font-family: var(--font-family);
  font-size: var(--text-nav-label);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-nav-label);
  color: var(--color-saffron-spark);
  text-transform: uppercase;
  margin-bottom: var(--spacing-18);
}

.hero-title {
  font-family: var(--font-family);
  font-size: var(--text-heading-lg);
  font-weight: var(--weight-regular);
  line-height: var(--leading-heading-lg);
  letter-spacing: var(--tracking-heading-lg);
  color: var(--color-bone-white);
  margin-bottom: var(--spacing-24);
}

.hero-subtitle {
  font-family: var(--font-family);
  font-size: var(--text-body);
  font-weight: var(--weight-ultralight);
  line-height: var(--leading-body);
  color: var(--color-bone-white);
  max-width: 640px;
  margin-bottom: var(--spacing-36);
}

/* Search Bar (Minimal Floating on Void, Centered Above Categories) */
.search-bar-container {
  width: 100%;
  max-width: 620px;
}

.search-bar-container.centered-search {
  margin: 0 auto var(--spacing-36) auto;
}

.search-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
}

.search-icon {
  position: absolute;
  left: 20px;
  color: var(--color-ash-gray);
  font-size: 1rem;
  pointer-events: none;
}

#tool-search-input {
  width: 100%;
  padding: 16px 48px 16px 52px;
  background: var(--color-void);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-button);
  color: var(--color-bone-white);
  font-family: var(--font-family);
  font-size: 0.95rem;
  font-weight: var(--weight-ultralight);
  outline: none;
  transition: var(--transition-smooth);
}

#tool-search-input:focus {
  border-color: var(--color-electric-iris);
  box-shadow: 0 0 20px rgba(128, 82, 255, 0.25);
}

.search-clear-btn {
  position: absolute;
  right: 16px;
  background: none;
  border: none;
  color: var(--color-ash-gray);
  font-size: 1rem;
  cursor: pointer;
  padding: 6px;
  transition: color 0.2s;
}

.search-clear-btn:hover {
  color: var(--color-bone-white);
}

.search-clear-btn.hidden {
  display: none;
}

/* Hero Visual Canvas Container */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

#hero-brain-canvas {
  width: 100%;
  height: 100%;
}

/* ==========================================================================
   Category Selector Bar & Filter Tabs
   ========================================================================== */

.showcase-section {
  padding: var(--spacing-60) 0 var(--spacing-96) 0;
  position: relative;
  z-index: 2;
}

.category-selector-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-18);
  margin-bottom: var(--spacing-60);
}

.selector-heading {
  display: flex;
  align-items: center;
  gap: var(--spacing-6);
  color: var(--color-saffron-spark);
  font-family: var(--font-family);
  font-size: var(--text-nav-label);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-nav-label);
}

.category-tabs {
  display: flex;
  align-items: center;
  gap: var(--spacing-12);
  flex-wrap: wrap;
}

.cat-tab {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-6);
  padding: 10px 20px;
  background: transparent;
  border: none;
  border-radius: var(--radius-pill);
  color: var(--color-ash-gray);
  font-family: var(--font-family);
  font-size: var(--text-nav-label);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-nav-label);
  text-transform: uppercase;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.cat-tab:hover {
  color: var(--color-bone-white);
}

.cat-tab.active {
  background: var(--color-electric-iris);
  color: var(--color-bone-white);
}

.badge-count {
  padding: 2px 8px;
  background: rgba(0, 0, 0, 0.4);
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
}

.cat-tab.active .badge-count {
  background: rgba(255, 255, 255, 0.25);
  color: var(--color-bone-white);
}

/* ==========================================================================
   Tools Grid & Cards (Pure Void Layout, Floating on Black)
   ========================================================================== */

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: var(--spacing-60);
}

.tool-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
  background: var(--color-void);
  border-radius: var(--radius-card);
  transition: var(--transition-smooth);
}

.tool-card:hover {
  transform: translateY(-4px);
}

/* Badge Strip */
.card-badge-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: var(--spacing-12);
}

.cat-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-6);
  color: var(--color-saffron-spark);
  font-family: var(--font-family);
  font-size: 12px;
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.35px;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-6);
  font-size: 12px;
  font-weight: var(--weight-semibold);
  color: var(--color-deep-verdant);
  text-transform: uppercase;
}

.status-pill i {
  font-size: 0.5rem;
}

/* Screenshot Box with 24px Border Radius */
.screenshot-container {
  position: relative;
  width: 100%;
  height: 220px;
  overflow: hidden;
  background: var(--color-void);
  border-radius: var(--radius-card);
  cursor: pointer;
  margin-bottom: var(--spacing-18);
}

.tool-screenshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  border-radius: var(--radius-card);
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.screenshot-container:hover .tool-screenshot {
  transform: scale(1.04);
}

.screenshot-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.screenshot-container:hover .screenshot-overlay {
  opacity: 1;
}

.zoom-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-6);
  padding: 10px 20px;
  background: var(--color-electric-iris);
  border-radius: var(--radius-button);
  color: var(--color-bone-white);
  font-family: var(--font-family);
  font-size: 0.85rem;
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
}

/* Card Body Content */
.card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.tool-header {
  margin-bottom: var(--spacing-12);
}

.tool-title {
  font-family: var(--font-family);
  font-size: var(--text-heading-xs);
  font-weight: var(--weight-regular);
  color: var(--color-bone-white);
  line-height: var(--leading-heading-xs);
}

.tool-subtitle {
  font-size: 13px;
  color: var(--color-ash-gray);
  font-weight: var(--weight-regular);
  display: block;
  margin-top: 4px;
}

.tool-description {
  font-family: var(--font-family);
  font-size: var(--text-body);
  font-weight: var(--weight-ultralight);
  color: var(--color-silver-mist);
  line-height: var(--leading-body);
  margin-bottom: var(--spacing-18);
  flex: 1;
}

/* Feature Tags */
.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-6);
  margin-bottom: var(--spacing-24);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  font-family: var(--font-family);
  font-size: 12px;
  font-weight: var(--weight-regular);
  color: var(--color-ash-gray);
}

.tag i {
  color: var(--color-electric-iris);
  font-size: 0.7rem;
}

/* Primary Action Button (Electric Iris Pill) */
.card-actions {
  display: flex;
  align-items: center;
  margin-top: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-6);
  padding: 14.4px 16px;
  border-radius: var(--radius-button);
  font-family: var(--font-family);
  font-size: var(--text-nav-label);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-nav-label);
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-smooth);
}

.btn-primary {
  background: var(--color-electric-iris);
  color: var(--color-bone-white);
  width: 100%;
}

.btn-primary:hover {
  filter: brightness(1.15);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-ash-gray);
  border: none;
}

.btn-ghost:hover {
  color: var(--color-bone-white);
}

/* No Results Panel */
.no-results-panel {
  padding: var(--spacing-60) var(--spacing-30);
  text-align: center;
  max-width: 500px;
  margin: var(--spacing-36) auto;
}

.no-results-panel i {
  font-size: 3rem;
  color: var(--color-ash-gray);
  margin-bottom: var(--spacing-18);
}

.no-results-panel h3 {
  font-family: var(--font-family);
  font-size: var(--text-heading-xs);
  margin-bottom: var(--spacing-6);
}

.no-results-panel p {
  font-weight: var(--weight-ultralight);
  color: var(--color-silver-mist);
  margin-bottom: var(--spacing-24);
}

.hidden {
  display: none !important;
}

/* ==========================================================================
   Internal Projects Showcase Banner (Floating Two-Column Rhythm)
   ========================================================================== */

.huxley-banner-section {
  padding: var(--spacing-60) 0 var(--spacing-120) 0;
  position: relative;
  z-index: 2;
}

.banner-card {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--spacing-60);
  align-items: center;
}

.banner-badge {
  display: inline-block;
  color: var(--color-saffron-spark);
  font-family: var(--font-family);
  font-size: var(--text-nav-label);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-nav-label);
  margin-bottom: var(--spacing-12);
}

.banner-title {
  font-family: var(--font-family);
  font-size: var(--text-heading-sm);
  font-weight: var(--weight-regular);
  line-height: var(--leading-heading-sm);
  letter-spacing: var(--tracking-heading-sm);
  color: var(--color-bone-white);
  margin-bottom: var(--spacing-18);
}

.banner-desc {
  font-family: var(--font-family);
  font-size: var(--text-body);
  font-weight: var(--weight-ultralight);
  line-height: var(--leading-body);
  color: var(--color-silver-mist);
  margin-bottom: var(--spacing-24);
}

.banner-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-18);
}

.banner-stats {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-24);
}

.b-stat-box {
  display: flex;
  flex-direction: column;
}

.b-stat-val {
  font-family: var(--font-family);
  font-size: var(--text-heading-lg);
  font-weight: var(--weight-regular);
  line-height: 1;
  letter-spacing: var(--tracking-heading-lg);
  color: var(--color-electric-iris);
}

.b-stat-lbl {
  font-size: 14px;
  font-weight: var(--weight-ultralight);
  color: var(--color-ash-gray);
  margin-top: 4px;
}

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

.site-footer {
  background: var(--color-void);
  padding: var(--spacing-60) 0 0 0;
  position: relative;
  z-index: 2;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--spacing-60);
  padding-bottom: var(--spacing-60);
}

.footer-logo-img {
  height: 48px;
  width: auto;
  margin-bottom: var(--spacing-18);
}

.footer-tagline {
  font-family: var(--font-family);
  font-size: var(--text-body);
  font-weight: var(--weight-ultralight);
  line-height: var(--leading-body);
  color: var(--color-silver-mist);
  max-width: 420px;
}

.footer-heading {
  font-family: var(--font-family);
  font-size: var(--text-nav-label);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-nav-label);
  text-transform: uppercase;
  color: var(--color-bone-white);
  margin-bottom: var(--spacing-18);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-12);
}

.footer-links a {
  color: var(--color-ash-gray);
  text-decoration: none;
  font-size: 15px;
  font-weight: var(--weight-ultralight);
  transition: color 0.2s;
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-6);
}

.footer-links a i {
  font-size: 0.75rem;
  color: var(--color-electric-iris);
}

.footer-links a:hover {
  color: var(--color-bone-white);
}

.footer-bottom {
  padding: var(--spacing-24) 0;
}

.footer-bottom-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--spacing-12);
  color: var(--color-ash-gray);
  font-size: 13px;
  font-weight: var(--weight-ultralight);
}

/* ==========================================================================
   Modal Overlay
   ========================================================================== */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.9);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-24);
  opacity: 1;
  transition: opacity 0.3s ease;
}

.modal-card {
  position: relative;
  width: 100%;
  max-width: 1000px;
  max-height: 90vh;
  overflow-y: auto;
  padding: var(--spacing-24);
  background: var(--color-void);
  border-radius: var(--radius-card);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  color: var(--color-ash-gray);
  font-size: 1.8rem;
  cursor: pointer;
  line-height: 1;
  transition: color 0.2s;
}

.modal-close-btn:hover {
  color: var(--color-bone-white);
}

.modal-title {
  font-family: var(--font-family);
  font-size: var(--text-heading-xs);
  font-weight: var(--weight-regular);
  margin-bottom: var(--spacing-12);
}

.modal-image-wrapper {
  width: 100%;
  margin-top: var(--spacing-12);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.modal-image-wrapper img {
  width: 100%;
  height: auto;
  display: block;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-36);
  }
  .banner-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 48px;
    letter-spacing: -1.68px;
  }
  .tools-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}