/* ==========================================================================
    SÜPAR // APPLE DESIGN SYSTEM & FLUID INTERFACE
   WWDC Designing Fluid Interfaces, Materials & Vibrancy, SF Pro Typography
   ========================================================================== */

:root {
  /* Apple System Glass Materials */
  --bg-ground: #fbfbfc;
  --bg-subtle: #f4f5f7;
  
  --apple-glass-bg: rgba(255, 255, 255, 0.78);
  --apple-glass-card: rgba(255, 255, 255, 0.86);
  --apple-hairline: rgba(0, 0, 0, 0.07);
  --apple-hairline-hover: rgba(0, 71, 255, 0.25);
  
  /* Specular Highlight (Light catching top edge) */
  --apple-specular: inset 0 1px 0 0 rgba(255, 255, 255, 0.85),
                    inset 0 0 0 1px rgba(255, 255, 255, 0.4);

  /* iOS/macOS Multi-stop Diffusion Shadows */
  --apple-shadow-ambient: 0 4px 20px -2px rgba(0, 0, 0, 0.03),
                          0 1px 3px 0 rgba(0, 0, 0, 0.02);
  --apple-shadow-float:   0 16px 36px -6px rgba(0, 0, 0, 0.06),
                          0 4px 12px -2px rgba(0, 0, 0, 0.02);
  --apple-shadow-hover:   0 24px 48px -8px rgba(0, 0, 0, 0.09),
                          0 6px 16px -2px rgba(0, 71, 255, 0.05);

  /* Apple Spring Easing Curves */
  --spring-snappy: cubic-bezier(0.16, 1, 0.3, 1);
  --spring-smooth: cubic-bezier(0.2, 0.95, 0.3, 1.05);
  --spring-press:  cubic-bezier(0.2, 0, 0, 1);

  /* Accents */
  --accent-cobalt: #0047ff;
  --accent-cobalt-hover: #0037c7;
  --accent-cobalt-subtle: rgba(0, 71, 255, 0.06);
  --accent-emerald: #047857;
  --accent-emerald-subtle: rgba(4, 120, 87, 0.08);
  --accent-amber: #b45309;
  --accent-amber-subtle: rgba(180, 83, 9, 0.08);
  --accent-purple: #6d28d9;
  --accent-purple-subtle: rgba(109, 40, 217, 0.08);
  --accent-danger: #dc2626;

  /* High-Contrast Accessible Typography (WCAG 2.2 AAA) */
  --text-primary: #090d14;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-faint: #94a3b8;

  /* Apple System Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "SF Pro", system-ui, sans-serif;
  --font-mono: "SF Mono", "Fira Code", ui-monospace, Menlo, Monaco, monospace;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--bg-ground);
  background-image: 
    radial-gradient(at 0% 0%, rgba(0, 71, 255, 0.025) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(4, 120, 87, 0.025) 0px, transparent 50%);
  color: var(--text-primary);
  font-family: var(--font-sans);
  overflow-x: hidden;
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* WCAG 2.2 Accessible Focus Visible */
:focus-visible {
  outline: 2px solid var(--accent-cobalt) !important;
  outline-offset: 2px !important;
  border-radius: 8px;
}

/* Canvas Background */
#quantum-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

.site-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* ==========================================================================
   1. Floating Minimalist Navigation Dock (Apple Translucent Glass)
   ========================================================================== */
.nav-wrapper {
  position: sticky;
  top: 1.25rem;
  z-index: 100;
  padding: 0 1.5rem;
  max-width: 1240px;
  margin: 0 auto;
  width: 100%;
}

.system-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 1.75rem;
  background: var(--apple-glass-bg);
  backdrop-filter: blur(28px) saturate(190%);
  -webkit-backdrop-filter: blur(28px) saturate(190%);
  border: 1px solid var(--apple-hairline);
  border-radius: 20px;
  box-shadow: var(--apple-specular), var(--apple-shadow-ambient);
  transition: transform 0.4s var(--spring-snappy), box-shadow 0.4s var(--spring-snappy), border-color 0.3s ease;
}

.system-bar:hover {
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: var(--apple-specular), var(--apple-shadow-float);
}

.sys-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
}

.brand-logo-img {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  object-fit: contain;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  border: 1px solid rgba(0, 0, 0, 0.06);
  transition: transform 0.3s var(--spring-snappy);
}

.brand-logo-img:hover {
  transform: scale(1.08);
}

.brand-text {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.domain-badge {
  font-size: 0.8rem;
  color: var(--accent-cobalt);
  margin-left: 2px;
  font-weight: 600;
}

/* Nav Menu Links */
.sys-nav-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  transition: color 0.15s ease;
}

.nav-link:hover {
  color: var(--accent-cobalt);
}

/* Telemetry HUD */
.sys-metrics {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-feature-settings: "tnum" 1;
}

.metric {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-secondary);
}

.metric .label {
  color: var(--text-muted);
}

.metric .dot.live {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-emerald);
  box-shadow: 0 0 8px rgba(4, 120, 87, 0.5);
  animation: gentlePulse 3s infinite ease-in-out;
}

@keyframes gentlePulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.92); }
}

/* Motion toggle control */
.motion-toggle-btn {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--apple-hairline);
  padding: 0.35rem 0.65rem;
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.2s var(--spring-snappy);
}

.motion-toggle-btn:hover {
  background: #ffffff;
  color: var(--text-primary);
  box-shadow: var(--apple-shadow-ambient);
}

.motion-toggle-btn:active {
  transform: scale(0.95);
}

/* ==========================================================================
   2. Main Container & Hero Section (Apple Typography)
   ========================================================================== */
.content-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 5rem 1.5rem 6rem;
  width: 100%;
  flex: 1;
}

.hero-section {
  text-align: center;
  padding: 3rem 1rem 5.5rem;
}

.terminal-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-cobalt);
  background: var(--accent-cobalt-subtle);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 1rem;
  border-radius: 30px;
  letter-spacing: 0.05em;
  margin-bottom: 2rem;
  font-weight: 600;
  border: 1px solid rgba(0, 71, 255, 0.12);
  box-shadow: 0 1px 3px rgba(0, 71, 255, 0.06);
}

.main-title {
  font-size: clamp(2.5rem, 5.8vw, 4.2rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.035em;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.glow-text {
  background: linear-gradient(135deg, #0047ff 0%, #6d28d9 45%, #047857 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-desc {
  max-width: 660px;
  margin: 0 auto 3rem;
  color: var(--text-secondary);
  font-size: 1.18rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.65;
}

.nav-pills {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 1.75rem;
  border-radius: 14px;
  background: var(--apple-glass-card);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid var(--apple-hairline);
  color: var(--text-primary);
  text-decoration: none;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  box-shadow: var(--apple-specular), var(--apple-shadow-ambient);
  transition: transform 0.3s var(--spring-snappy), box-shadow 0.3s var(--spring-snappy);
}

.pill-btn:hover {
  background: #ffffff;
  transform: translateY(-2px);
  box-shadow: var(--apple-specular), var(--apple-shadow-float);
}

.pill-btn:active {
  transform: scale(0.965);
  transition-duration: 0.08s;
}

.pill-btn.highlight {
  background: var(--accent-cobalt);
  border-color: var(--accent-cobalt);
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(0, 71, 255, 0.28);
}

.pill-btn.highlight:hover {
  background: var(--accent-cobalt-hover);
  box-shadow: 0 6px 24px rgba(0, 71, 255, 0.38);
}

/* ==========================================================================
   3. Section Headers & Spatial Layout
   ========================================================================== */
.section-block {
  margin-top: 6.5rem;
}

.section-header {
  margin-bottom: 2.75rem;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-cobalt);
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.section-heading {
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 0.4rem;
}

.section-sub {
  color: var(--text-secondary);
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

/* ==========================================================================
   4. Specs Catalog Grid (Apple Elevated Glass Surface)
   ========================================================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
}

.spec-card {
  background: var(--apple-glass-card);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border: 1px solid var(--apple-hairline);
  border-radius: 22px;
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--apple-specular), var(--apple-shadow-ambient);
  transition: transform 0.45s var(--spring-smooth), 
              box-shadow 0.45s var(--spring-smooth), 
              border-color 0.3s ease;
}

.spec-card:hover {
  transform: translateY(-5px) scale(1.008);
  box-shadow: var(--apple-specular), var(--apple-shadow-hover);
  border-color: var(--apple-hairline-hover);
}

.spec-card:active {
  transform: translateY(-2px) scale(0.992);
  transition-duration: 0.1s;
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
}

.spec-id {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.25rem 0.65rem;
  border-radius: 8px;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.status-indicator.active {
  background: var(--accent-emerald-subtle);
  color: var(--accent-emerald);
}
.status-indicator.active .pulse-dot {
  background: var(--accent-emerald);
}

.status-indicator.exp {
  background: var(--accent-cobalt-subtle);
  color: var(--accent-cobalt);
}
.status-indicator.exp .pulse-dot {
  background: var(--accent-cobalt);
}

.status-indicator.proto {
  background: var(--accent-amber-subtle);
  color: var(--accent-amber);
}
.status-indicator.proto .pulse-dot {
  background: var(--accent-amber);
}

.status-indicator.r-and-d {
  background: var(--accent-purple-subtle);
  color: var(--accent-purple);
}
.status-indicator.r-and-d .pulse-dot {
  background: var(--accent-purple);
}

.card-title {
  font-size: 1.45rem;
  margin-bottom: 0.85rem;
  font-family: var(--font-mono);
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.card-desc {
  color: var(--text-secondary);
  font-size: 0.96rem;
  line-height: 1.65;
  margin-bottom: 1.75rem;
  flex: 1;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.25rem 0.65rem;
  background: rgba(0, 0, 0, 0.03);
  border: 1px solid var(--apple-hairline);
  border-radius: 7px;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.03em;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.25rem;
  border-top: 1px solid var(--apple-hairline);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.lock-indicator {
  color: var(--text-muted);
}

.version-tag {
  color: var(--text-secondary);
  font-weight: 600;
}

/* ==========================================================================
   5. Micro-Tools Workbench (Apple Segmented Control & Frosted Container)
   ========================================================================== */
.tools-container {
  background: var(--apple-glass-card);
  backdrop-filter: blur(28px) saturate(190%);
  -webkit-backdrop-filter: blur(28px) saturate(190%);
  border: 1px solid var(--apple-hairline);
  border-radius: 22px;
  box-shadow: var(--apple-specular), var(--apple-shadow-float);
  overflow: hidden;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.tools-container:hover {
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: var(--apple-specular), var(--apple-shadow-hover);
}

/* Apple iOS/macOS Sliding Capsule Segmented Control */
.tools-tabs {
  position: relative;
  display: flex;
  align-items: center;
  background: rgba(142, 142, 147, 0.12);
  padding: 5px;
  border-bottom: 1px solid var(--apple-hairline);
  gap: 0;
  overflow-x: auto;
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05);
}

/* Dynamic Hardware-Accelerated Sliding Pill */
.tab-sliding-indicator {
  position: absolute;
  top: 5px;
  left: 0;
  height: calc(100% - 10px);
  background: #ffffff;
  border-radius: 10px;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.1), 
              0 0.5px 1px rgba(0, 0, 0, 0.06), 
              inset 0 1px 0 rgba(255, 255, 255, 0.9);
  transition: transform 0.38s cubic-bezier(0.2, 0.95, 0.3, 1.15), 
              width 0.38s cubic-bezier(0.2, 0.95, 0.3, 1.15);
  pointer-events: none;
  z-index: 1;
}

.tab-btn {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.75rem 1.5rem;
  background: transparent;
  border: none;
  border-radius: 10px;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: color 0.25s ease;
  white-space: nowrap;
  user-select: none;
  -webkit-user-select: none;
}

.tab-btn:hover:not(.disabled) {
  color: var(--text-primary);
}

.tab-btn.active {
  color: #000000;
  font-weight: 600;
}

.tab-btn:active:not(.disabled) {
  transform: scale(0.97);
}

.tab-btn.disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.tab-icon {
  font-weight: 700;
}

.tool-view {
  display: none;
  padding: 2.5rem;
  background: #ffffff;
}

.tool-view.active {
  display: block;
  animation: appleFadeIn 0.3s var(--spring-snappy);
}

@keyframes appleFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Tool Action Toolbar */
.tool-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.75rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.tool-left-actions, .tool-right-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.tool-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--apple-glass-card);
  border: 1px solid var(--apple-hairline);
  color: var(--text-primary);
  padding: 0.6rem 1.1rem;
  border-radius: 10px;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  cursor: pointer;
  transition: transform 0.25s var(--spring-snappy), 
              background 0.2s ease, 
              box-shadow 0.2s ease;
  text-decoration: none;
  box-shadow: var(--apple-specular), var(--apple-shadow-ambient);
  user-select: none;
  -webkit-user-select: none;
}

.tool-action-btn:hover {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.12);
  transform: translateY(-1px);
  box-shadow: var(--apple-specular), var(--apple-shadow-float);
}

.tool-action-btn:active {
  transform: scale(0.962);
  transition-duration: 0.08s;
}

.tool-action-btn.primary {
  background: var(--accent-cobalt);
  color: #ffffff;
  border-color: var(--accent-cobalt);
  box-shadow: 0 4px 14px rgba(0, 71, 255, 0.25);
}

.tool-action-btn.primary:hover {
  background: var(--accent-cobalt-hover);
  box-shadow: 0 6px 18px rgba(0, 71, 255, 0.35);
}

.tool-action-btn.subtle {
  background: transparent;
  border-color: transparent;
  color: var(--text-secondary);
  box-shadow: none;
}

.tool-action-btn.subtle:hover {
  background: rgba(0, 0, 0, 0.04);
  color: var(--text-primary);
}

.tool-action-btn.danger:hover {
  color: var(--accent-danger);
  background: rgba(220, 38, 38, 0.08);
}

.tool-action-btn.tiny {
  padding: 0.35rem 0.75rem;
  font-size: 0.78rem;
  border-radius: 8px;
}

.tool-badge {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  padding: 0.35rem 0.75rem;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.04);
  color: var(--text-secondary);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.tool-badge.success {
  background: var(--accent-emerald-subtle);
  color: var(--accent-emerald);
}

.tool-badge.error {
  background: rgba(220, 38, 38, 0.1);
  color: var(--accent-danger);
}

/* ==========================================================================
   6. JSON Workspace
   ========================================================================== */
.json-workspace {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  min-height: 450px;
}

@media (max-width: 880px) {
  .json-workspace {
    grid-template-columns: 1fr;
  }
}

.json-panel {
  display: flex;
  flex-direction: column;
  background: #f8fafc;
  border: 1px solid var(--apple-hairline);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.json-panel:focus-within {
  border-color: var(--accent-cobalt);
  box-shadow: 0 0 0 3px rgba(0, 71, 255, 0.1);
}

.panel-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.75rem 1.15rem;
  background: #ffffff;
  border-bottom: 1px solid var(--apple-hairline);
  color: var(--text-secondary);
  letter-spacing: 0.05em;
  font-weight: 600;
}

.json-panel textarea {
  width: 100%;
  flex: 1;
  min-height: 400px;
  background: #ffffff;
  border: none;
  outline: none;
  resize: vertical;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  padding: 1.25rem;
  line-height: 1.65;
}

.code-output {
  margin: 0;
  padding: 1.25rem;
  flex: 1;
  min-height: 400px;
  overflow: auto;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--text-secondary);
  white-space: pre-wrap;
  word-break: break-all;
  background: #f8fafc;
}

/* Syntax Highlighting */
.json-key { color: #0284c7; font-weight: 600; }
.json-string { color: #047857; }
.json-number { color: #b45309; }
.json-boolean { color: #6d28d9; font-weight: 600; }
.json-null { color: #dc2626; font-weight: 600; }

.tool-meta-bar {
  display: flex;
  gap: 2rem;
  margin-top: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  padding-top: 0.5rem;
}

.tool-meta-bar b {
  color: var(--text-secondary);
}

/* ==========================================================================
   7. URL Shortener & QR Workspace
   ========================================================================== */
.url-workspace {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.url-input-card {
  background: rgba(142, 142, 147, 0.08);
  border: 1px solid var(--apple-hairline);
  border-radius: 16px;
  padding: 1.75rem;
}

.input-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin-bottom: 0.85rem;
  letter-spacing: 0.04em;
  font-weight: 600;
}

.input-row {
  display: flex;
  gap: 0.85rem;
}

.input-row input {
  flex: 1;
  background: #ffffff;
  border: 1px solid var(--apple-hairline);
  border-radius: 10px;
  padding: 0.9rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--text-primary);
  outline: none;
  transition: all 0.2s ease;
  box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.04);
}

.input-row input:focus {
  border-color: var(--accent-cobalt);
  box-shadow: 0 0 0 3px rgba(0, 71, 255, 0.12);
}

.url-options {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-top: 1.25rem;
}

.custom-check {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
  cursor: pointer;
  font-weight: 500;
}

.custom-check input {
  display: none;
}

.check-box {
  width: 18px;
  height: 18px;
  border-radius: 5px;
  border: 1px solid rgba(0, 0, 0, 0.15);
  background: #ffffff;
  display: inline-block;
  position: relative;
  transition: all 0.15s ease;
}

.custom-check input:checked + .check-box {
  background: var(--accent-cobalt);
  border-color: var(--accent-cobalt);
}

.alias-input {
  background: #ffffff;
  border: 1px solid var(--apple-hairline);
  border-radius: 8px;
  padding: 0.5rem 0.95rem;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  outline: none;
}

.alias-input:focus {
  border-color: var(--accent-cobalt);
}

/* URL Result Card */
.url-result-card {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  background: #ffffff;
  border: 1px solid rgba(0, 71, 255, 0.25);
  border-radius: 16px;
  padding: 1.75rem;
  box-shadow: var(--apple-shadow-ambient);
  animation: appleFadeIn 0.3s var(--spring-snappy);
}

@media (max-width: 768px) {
  .url-result-card {
    flex-direction: column;
    align-items: flex-start;
  }
}

.result-details {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 1.15rem;
}

.result-row {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.res-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
}

.res-link-group {
  display: flex;
  gap: 0.6rem;
  align-items: center;
}

.res-link-group input {
  flex: 1;
  background: #f8fafc;
  border: 1px solid var(--apple-hairline);
  border-radius: 10px;
  padding: 0.65rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--accent-cobalt);
  font-weight: 600;
  outline: none;
}

.res-target-text {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
  word-break: break-all;
}

.result-service-badge {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.3rem 0.65rem;
  border-radius: 6px;
  background: var(--accent-cobalt-subtle);
  color: var(--accent-cobalt);
  letter-spacing: 0.05em;
  font-weight: 600;
}

.qr-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.65rem;
  padding: 1.25rem;
  background: #ffffff;
  border: 1px solid var(--apple-hairline);
  border-radius: 14px;
  box-shadow: var(--apple-shadow-ambient);
}

#qr-canvas-holder canvas, #qr-canvas-holder img {
  display: block;
  max-width: 128px;
  max-height: 128px;
}

.qr-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
}

/* Recent Links */
.recent-links-section {
  margin-top: 1rem;
  border-top: 1px solid var(--apple-hairline);
  padding-top: 1.75rem;
}

.recent-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
}

.tiny-link-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
  transition: color 0.15s ease;
}

.tiny-link-btn:hover {
  color: var(--accent-danger);
}

.recent-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.recent-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 1.25rem;
  background: #ffffff;
  border: 1px solid var(--apple-hairline);
  border-radius: 12px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  box-shadow: var(--apple-shadow-ambient);
}

.recent-left {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  overflow: hidden;
}

.recent-short {
  color: var(--accent-cobalt);
  font-weight: 600;
  white-space: nowrap;
}

.recent-orig {
  color: var(--text-muted);
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
  max-width: 450px;
}

.recent-right {
  display: flex;
  gap: 0.6rem;
}

.empty-state {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-family: var(--font-mono);
  padding: 1.5rem;
  text-align: center;
}

/* ==========================================================================
   8. Footer
   ========================================================================== */
.system-footer {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2.5rem 2rem;
  border-top: 1px solid var(--apple-hairline);
  background: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-left {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.brand-sub {
  color: var(--text-secondary);
  font-weight: 600;
  letter-spacing: 0.08em;
}

.footer-right {
  display: flex;
  gap: 1rem;
}

.footer-badge {
  padding: 0.25rem 0.65rem;
  border: 1px solid var(--apple-hairline);
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.03);
  color: var(--text-secondary);
  font-weight: 500;
}

/* Responsive Breakpoints */
@media (max-width: 768px) {
  .nav-wrapper {
    top: 0.5rem;
    padding: 0 0.75rem;
  }
  .system-bar {
    padding: 0.75rem 1rem;
    border-radius: 16px;
  }
  .sys-nav-links {
    display: none;
  }
  .sys-metrics {
    display: none;
  }
  .content-container {
    padding: 3rem 1rem 4rem;
  }
  .hero-section {
    padding: 2rem 0.5rem 3rem;
  }
  .projects-grid {
    grid-template-columns: 1fr;
  }
  .system-footer {
    padding: 2rem 1.25rem;
    flex-direction: column;
    align-items: flex-start;
  }
}