/* ==========================================================================
   APPLE DESIGN SYSTEM THEME SPECIFICATION
   Applied to UEIOT interfaces: index.html, products.html, about.html, contact.html
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ==========================================================================
   1. ROOT VARIABLES & THEME TOKENS
   ========================================================================== */
:root {
  /* Fonts - Apple SF Pro Stack with Inter & System fallbacks */
  --font-display: "SF Pro Display", -apple-system, BlinkMacSystemFont, "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-text: "SF Pro Text", -apple-system, BlinkMacSystemFont, "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Apple Pro Dark Theme (Default) */
  --canvas: #000000;
  --canvas-elevated: #161617;
  --surface: #161617;
  --surface-card: #161617;
  --surface-card-hover: #1d1d1f;
  --surface-elevated: #1d1d1f;
  --surface-popover: #2c2c2e;
  --panel: #1d1d1f;
  --panel-inset: rgba(255, 255, 255, 0.04);
  
  --line: rgba(255, 255, 255, 0.12);
  --line-subtle: rgba(255, 255, 255, 0.07);
  --line-strong: rgba(255, 255, 255, 0.24);
  
  --text-primary: #f5f5f7;
  --text-secondary: #d2d2d7;
  --text-muted: #86868b;
  --text-tertiary: #6e6e73;
  
  --accent: #2997ff;
  --accent-hover: #0077ed;
  --accent-orange: #f56300;
  --accent-green: #30d158;
  
  --btn-primary-bg: #0071e3;
  --btn-primary-text: #ffffff;
  --btn-secondary-bg: rgba(255, 255, 255, 0.08);
  --btn-secondary-border: rgba(255, 255, 255, 0.22);
  --btn-secondary-text: #f5f5f7;
  
  --nav-bg: rgba(0, 0, 0, 0.82);
  --nav-border: rgba(255, 255, 255, 0.12);
  
  --card-radius: 20px;
  --card-radius-lg: 24px;
  --card-radius-sm: 14px;
  --btn-radius: 980px;
  --chip-radius: 980px;
  --input-radius: 12px;
  
  --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  --card-shadow-hover: 0 18px 48px rgba(0, 0, 0, 0.7);
  --glow-accent: radial-gradient(ellipse at 50% 30%, rgba(41, 151, 255, 0.12) 0%, rgba(0, 0, 0, 0) 70%);
}

/* Apple Consumer Light Theme */
html.light {
  --canvas: #fbfbfd;
  --canvas-elevated: #ffffff;
  --surface: #f5f5f7;
  --surface-card: #f5f5f7;
  --surface-card-hover: #ebebee;
  --surface-elevated: #ffffff;
  --surface-popover: #ffffff;
  --panel: #f5f5f7;
  --panel-inset: #e8e8ed;
  
  --line: rgba(0, 0, 0, 0.08);
  --line-subtle: rgba(0, 0, 0, 0.04);
  --line-strong: rgba(0, 0, 0, 0.18);
  
  --text-primary: #1d1d1f;
  --text-secondary: #424245;
  --text-muted: #86868b;
  --text-tertiary: #6e6e73;
  
  --accent: #0071e3;
  --accent-hover: #0077ed;
  --accent-orange: #f56300;
  --accent-green: #34c759;
  
  --btn-primary-bg: #0071e3;
  --btn-primary-text: #ffffff;
  --btn-secondary-bg: rgba(0, 0, 0, 0.05);
  --btn-secondary-border: rgba(0, 0, 0, 0.12);
  --btn-secondary-text: #1d1d1f;
  
  --nav-bg: rgba(255, 255, 255, 0.82);
  --nav-border: rgba(0, 0, 0, 0.08);
  
  --card-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
  --card-shadow-hover: 0 12px 32px rgba(0, 0, 0, 0.08);
  --glow-accent: radial-gradient(ellipse at 50% 30%, rgba(0, 113, 227, 0.08) 0%, rgba(251, 251, 253, 0) 70%);
}

/* ==========================================================================
   2. GLOBAL RESET & BASE STYLES BASED ON HTML TAGS
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background-color: var(--canvas);
  color: var(--text-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
  background-color: var(--canvas);
  color: var(--text-primary);
  font-family: var(--font-text);
  font-size: 17px;
  line-height: 1.47059;
  font-weight: 400;
  letter-spacing: -0.022em;
  overflow-x: hidden;
  transition: background-color 0.3s cubic-bezier(0.16, 1, 0.3, 1), color 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

::selection {
  background: rgba(0, 113, 227, 0.3);
  color: inherit;
}

/* ==========================================================================
   3. TYPOGRAPHY BASED ON HTML HEADINGS & TEXT TAGS (APPLE STYLE)
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  color: var(--text-primary);
  margin-top: 0;
  font-weight: 600;
}

h1 {
  font-size: clamp(38px, 6vw, 76px);
  line-height: 1.05263;
  letter-spacing: -0.025em;
  font-weight: 700;
}

h2 {
  font-size: clamp(30px, 4.5vw, 54px);
  line-height: 1.07143;
  letter-spacing: -0.02em;
  font-weight: 600;
}

h3 {
  font-size: clamp(20px, 2.5vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.015em;
  font-weight: 600;
}

h4 {
  font-size: 21px;
  line-height: 1.2381;
  letter-spacing: -0.012em;
  font-weight: 600;
}

h5, h6 {
  font-size: 17px;
  line-height: 1.29412;
  letter-spacing: -0.01em;
  font-weight: 600;
}

p {
  font-family: var(--font-text);
  font-size: 17px;
  line-height: 1.47059;
  letter-spacing: -0.022em;
  color: var(--text-secondary);
  margin-top: 0;
}

small {
  font-size: 12px;
  line-height: 1.33337;
  letter-spacing: -0.01em;
}

strong, b {
  font-weight: 600;
  color: var(--text-primary);
}

/* Links */
a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
}

a:hover {
  color: var(--accent-hover);
  text-decoration: none;
}

/* ==========================================================================
   4. INTERACTIVE TAGS: BUTTONS & FORM INPUTS (APPLE CAPSULE & SQUIRCLE)
   ========================================================================== */
button, .button, input[type="submit"], input[type="button"] {
  font-family: var(--font-text);
  font-size: 14px;
  line-height: 1.2;
  font-weight: 500;
  letter-spacing: -0.016em;
  border-radius: var(--btn-radius);
  padding: 11px 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid var(--btn-secondary-border);
  background: var(--btn-secondary-bg);
  color: var(--btn-secondary-text);
  text-decoration: none;
  text-transform: none;
}

button:hover, .button:hover {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.4);
  color: var(--text-primary);
  transform: scale(1.01);
}

html.light button:hover, html.light .button:hover {
  background: rgba(0, 0, 0, 0.08);
  border-color: rgba(0, 0, 0, 0.2);
  color: var(--text-primary);
}

/* Apple Primary Pill Button (.button.invert / .btn-primary) */
.button.invert, button.btn-primary, .btn-primary {
  background: var(--btn-primary-bg) !important;
  color: var(--btn-primary-text) !important;
  border-color: var(--btn-primary-bg) !important;
}

.button.invert:hover, button.btn-primary:hover, .btn-primary:hover {
  background: var(--accent-hover) !important;
  border-color: var(--accent-hover) !important;
  color: #ffffff !important;
  transform: scale(1.02);
  box-shadow: 0 4px 16px rgba(0, 113, 227, 0.4);
}

/* Input, Textarea & Select */
input, textarea, select {
  font-family: var(--font-text);
  font-size: 15px;
  line-height: 1.4;
  letter-spacing: -0.016em;
  border-radius: var(--input-radius);
  padding: 13px 16px;
  background-color: var(--surface-card);
  border: 1px solid var(--line);
  color: var(--text-primary);
  outline: none;
  transition: border-color 0.2s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.2s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.2s ease;
  width: 100%;
}

input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.25);
  background-color: var(--surface-card-hover);
}

input::placeholder, textarea::placeholder {
  color: var(--text-muted);
  font-family: var(--font-text);
}

/* ==========================================================================
   5. STRUCTURAL TAGS: NAV, HEADER, SECTION, ARTICLE, FOOTER
   ========================================================================== */
/* Navigation Bar (Apple Dynamic Frosted Glass System) */
nav#nav, nav {
  background: transparent !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  border-bottom: 1px solid transparent !important;
  max-width: 100vw;
  overflow-x: clip;
  transition: background-color 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              backdrop-filter 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              box-shadow 0.35s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

/* Dynamic Frosted Scrolled State */
nav#nav.nav-scrolled {
  background: var(--nav-bg) !important;
  backdrop-filter: saturate(180%) blur(20px) !important;
  -webkit-backdrop-filter: saturate(180%) blur(20px) !important;
  border-bottom: 1px solid var(--nav-border) !important;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25) !important;
}

html.light nav#nav.nav-scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05) !important;
}

/* Unified Open Mobile Overlay State */
nav#nav.has-mobile-open {
  background: rgba(0, 0, 0, 0.95) !important;
  backdrop-filter: saturate(180%) blur(30px) !important;
  -webkit-backdrop-filter: saturate(180%) blur(30px) !important;
  border-bottom: 1px solid var(--line) !important;
}

html.light nav#nav.has-mobile-open {
  background: rgba(251, 251, 253, 0.96) !important;
  border-bottom: 1px solid var(--line) !important;
}

/* Ensure .navlinks NEVER displays on mobile, preventing horizontal overflow */
.navlinks {
  display: none !important;
}

@media (min-width: 768px) {
  .navlinks {
    display: flex !important;
  }
}

/* Apple Dynamic Nav Links */
nav a.nav-link, nav .navlinks a {
  font-family: var(--font-text);
  font-size: 13px;
  letter-spacing: -0.01em;
  color: var(--text-secondary);
  font-weight: 500;
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 9999px;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
  opacity: 0.85;
}

nav a.nav-link:hover, nav .navlinks a:hover {
  color: var(--text-primary);
  opacity: 1;
  background: rgba(255, 255, 255, 0.08);
}

html.light nav a.nav-link:hover, html.light nav .navlinks a:hover {
  background: rgba(0, 0, 0, 0.05);
}

nav a.nav-link.active, nav .navlinks a.active {
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  opacity: 1 !important;
  background: rgba(255, 255, 255, 0.14) !important;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

html.light nav a.nav-link.active, html.light nav .navlinks a.active {
  background: rgba(0, 0, 0, 0.07) !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

section {
  border-bottom: 1px solid var(--line);
}

article {
  border-radius: var(--card-radius);
  background-color: var(--surface-card);
  border: 1px solid var(--line);
  box-shadow: var(--card-shadow);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

footer {
  background-color: var(--surface-elevated) !important;
  color: var(--text-muted);
  border-top: 1px solid var(--line);
  font-family: var(--font-text);
  font-size: 12px;
  line-height: 1.33337;
  font-weight: 400;
  letter-spacing: -0.01em;
}

footer a {
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

footer a:hover {
  color: var(--text-primary);
  text-decoration: underline;
}

/* ==========================================================================
   6. APPLE UI COMPONENT UPGRADES (CARDS, BADGES, PILLS, MARQUEE)
   ========================================================================== */
/* Content Wrapper */
.wrap {
  width: min(100% - 40px, 1280px);
  margin-inline: auto;
}

@media (min-width: 768px) {
  .wrap {
    width: min(100% - 96px, 1280px);
  }
}

/* Eyebrows, Tags & Metadata */
.mono, .ui {
  font-family: var(--font-text) !important;
  letter-spacing: -0.01em !important;
  text-transform: none !important;
}

/* Category Eyebrow in Apple Orange/Blue */
.eyebrow, header .mono.text-\[11px\], header .mono.text-\[12px\], header .ui.text-\[11px\], .product-num {
  font-family: var(--font-text) !important;
  color: var(--accent-orange) !important;
  font-weight: 600 !important;
  font-size: 12px !important;
  letter-spacing: 0.02em !important;
}

/* Apple Capsule Badges & Chips */
.border.line.px-3.py-2,
.border.line.p-3,
.features span,
.wrap .inline-block.border.line {
  border-radius: var(--chip-radius) !important;
  background: var(--btn-secondary-bg) !important;
  border-color: var(--line) !important;
  color: var(--text-secondary) !important;
  font-family: var(--font-text) !important;
  font-size: 12px !important;
  font-weight: 500 !important;
  letter-spacing: -0.01em !important;
}

/* Capability Bento Grid Cards */
.capability {
  border-radius: var(--card-radius) !important;
  background: var(--surface-card) !important;
  background-clip: padding-box !important;
  border: 1px solid var(--line) !important;
  box-shadow: var(--card-shadow);
  padding: 30px !important;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.card, .flow, .process, .eco {
  background-clip: padding-box !important;
  overflow: hidden;
}

.capability:hover {
  transform: translateY(-4px) !important;
  border-color: var(--line-strong) !important;
  background: var(--surface-card-hover) !important;
  box-shadow: var(--card-shadow-hover) !important;
}

.cap-icon {
  border-radius: 50% !important;
  width: 36px !important;
  height: 36px !important;
  border-color: var(--line) !important;
  background: var(--btn-secondary-bg) !important;
  color: var(--accent) !important;
  font-family: var(--font-display) !important;
  font-weight: 600 !important;
  font-size: 12px !important;
}

.capability:hover .cap-icon {
  background: var(--accent) !important;
  color: #ffffff !important;
  border-color: var(--accent) !important;
}

/* About Cards, Flow & Eco Components */
.card, .flow, .process, .eco {
  border-radius: var(--card-radius) !important;
  background: var(--surface-card) !important;
  border: 1px solid var(--line) !important;
  box-shadow: var(--card-shadow);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1) !important;
}

.card:hover, .flow:hover, .process:hover, .eco:hover {
  transform: translateY(-3px) !important;
  border-color: var(--line-strong) !important;
  background: var(--surface-card-hover) !important;
  box-shadow: var(--card-shadow-hover) !important;
}

.marker {
  border-radius: 50% !important;
  border-color: var(--line) !important;
  background: var(--btn-secondary-bg) !important;
  color: var(--accent) !important;
}

.card:hover .marker {
  background: var(--accent) !important;
  color: #ffffff !important;
}

.flow.active, .eco.active {
  background: var(--surface-elevated) !important;
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 2px var(--accent) !important;
}

/* Marquee & Partner Cards */
.brand {
  border-radius: var(--card-radius-sm) !important;
  background: var(--surface-card) !important;
  border: 1px solid var(--line) !important;
  font-family: var(--font-text) !important;
  font-size: 13px !important;
  font-weight: 500 !important;
  letter-spacing: -0.01em !important;
  text-transform: none !important;
  color: var(--text-secondary) !important;
  transition: all 0.25s ease !important;
}

.brand:hover {
  border-color: var(--line-strong) !important;
  color: var(--text-primary) !important;
  background: var(--surface-card-hover) !important;
}

.brand::before {
  border-radius: 50% !important;
  background: var(--accent) !important;
  border: none !important;
}

/* Timeline & Progress Indicators */
.timeline-item, .step {
  border-left: 2px solid var(--line) !important;
}

.timeline-item::before, .step:before {
  border-radius: 50% !important;
  width: 10px !important;
  height: 10px !important;
  left: -6px !important;
  background: var(--accent) !important;
  box-shadow: 0 0 12px var(--accent) !important;
}

.timeline-item:not(:last-child)::after, .step:not(:last-child):after {
  background: var(--line-strong) !important;
}

/* Theme Toggle Icon Button (Apple Style) */
.theme-toggle-btn {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 38px !important;
  height: 38px !important;
  padding: 0 !important;
  border-radius: 50% !important;
  border: 1px solid var(--btn-secondary-border) !important;
  background: var(--btn-secondary-bg) !important;
  cursor: pointer !important;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1) !important;
  line-height: 1 !important;
  flex-shrink: 0;
}

.theme-toggle-btn:hover {
  background: rgba(255, 255, 255, 0.16) !important;
  border-color: var(--line-strong) !important;
  transform: scale(1.06) !important;
}

html.light .theme-toggle-btn:hover {
  background: rgba(0, 0, 0, 0.08) !important;
  border-color: var(--line-strong) !important;
  transform: scale(1.06) !important;
}

.theme-icon {
  width: 22px;
  height: 22px;
  object-fit: contain;
  display: block;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), filter 0.3s ease;
  filter: drop-shadow(0 0 6px rgba(41, 151, 255, 0.35));
  pointer-events: none;
}

.theme-toggle-btn:hover .theme-icon {
  transform: rotate(180deg);
}

html.light .theme-icon {
  filter: saturate(120%) brightness(0.95);
}

/* Inside mobile dropdown menu drawer */
.mobile-menu .theme-toggle-btn {
  width: 100% !important;
  height: auto !important;
  border-radius: 12px !important;
  padding: 10px 14px !important;
  display: flex !important;
  justify-content: space-between !important;
}

/* ==========================================================================
   7. APPLE REFINED HARDWARE ARTWORK (DEVICE, METER & TELEMETRY HUD)
   ========================================================================== */
.product-visual, .visual {
  border-radius: var(--card-radius) !important;
  border: 1px solid var(--line) !important;
  background: radial-gradient(circle at 50% 50%, #1c1c1e 0%, #121214 45%, #0a0a0c 100%) !important;
}

html.light .product-visual, html.light .visual {
  background: radial-gradient(circle at 50% 50%, #ffffff 0%, #f0f0f4 50%, #e5e5ea 100%) !important;
}

.device {
  border-radius: 16px !important;
  border: 2px solid rgba(255, 255, 255, 0.25) !important;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6) !important;
}

.device::after {
  border-radius: 8px !important;
  background: #000000 !important;
  border: 1px solid rgba(255, 255, 255, 0.15) !important;
  color: var(--accent-green) !important;
  font-family: var(--font-mono) !important;
}

.meter {
  border-radius: 50% !important;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6) !important;
  border: 3px solid rgba(255, 255, 255, 0.3) !important;
}

.meter::before {
  border-radius: 8px !important;
  background: #000000 !important;
  border: 1px solid rgba(255, 255, 255, 0.15) !important;
  color: var(--accent) !important;
  font-family: var(--font-mono) !important;
}

.telemetry {
  border-radius: var(--card-radius-sm) !important;
  background: rgba(22, 22, 23, 0.85) !important;
  backdrop-filter: blur(20px) !important;
  -webkit-backdrop-filter: blur(20px) !important;
  border: 1px solid rgba(255, 255, 255, 0.16) !important;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.4) !important;
}

html.light .telemetry {
  background: rgba(255, 255, 255, 0.88) !important;
  border-color: rgba(0, 0, 0, 0.1) !important;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.08) !important;
}

/* Atmospheric Grids & Glows */
.grid-bg {
  background-image:
    linear-gradient(var(--line-subtle) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-subtle) 1px, transparent 1px) !important;
  background-size: 40px 40px !important;
}

/* Journey / Concept-to-Deployment: animated, clickable step cards */
.journey-track {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.journey-step {
  position: relative;
  display: block;
  width: 100%;
  text-align: left;
  cursor: pointer;
  font: inherit;
  color: inherit;
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-left: 3px solid var(--accent);
  border-radius: var(--card-radius-sm, 10px);
  padding: 18px 20px 18px 34px;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.35s cubic-bezier(0.16, 1, 0.3, 1),
    border-color 0.35s ease, background-color 0.35s ease, opacity 0.35s ease, filter 0.35s ease;
}

.journey-step:hover {
  border-color: var(--line-strong);
  border-left-color: var(--accent);
  background: var(--surface-card-hover);
  transform: translateX(4px);
  box-shadow: var(--card-shadow-hover);
}

.journey-node {
  position: absolute;
  left: -3px;
  top: 22px;
  width: 8px;
  height: 8px;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: journeyPulse 2.4s ease-in-out infinite;
}

@keyframes journeyPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.6); }
}

.journey-step.zoomed {
  transform: scale(1.045);
  z-index: 20;
  border-color: var(--accent);
  background: var(--surface-elevated, var(--surface-card-hover));
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.45), 0 0 0 1px var(--accent);
}

.journey-track.has-zoomed .journey-step:not(.zoomed) {
  opacity: 0.4;
  filter: blur(0.5px);
  transform: scale(0.98);
}

@media (prefers-reduced-motion: reduce) {
  .journey-node { animation: none; }
  .journey-step, .journey-track.has-zoomed .journey-step:not(.zoomed) { transition: none; }
}

/* Click-to-expand content modal */
#content-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}
#content-modal-overlay.open {
  opacity: 1;
  pointer-events: auto;
}
.content-modal {
  position: relative;
  width: 100%;
  max-width: 640px;
  max-height: 86vh;
  overflow-y: auto;
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: var(--card-radius, 14px);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5);
  transform: translateY(16px) scale(0.98);
  transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}
#content-modal-overlay.open .content-modal {
  transform: translateY(0) scale(1);
}
.content-modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  z-index: 2;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background: rgba(0, 0, 0, 0.55);
  color: #fff;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}
.content-modal-close:hover {
  background: rgba(0, 0, 0, 0.8);
}
.content-modal-img {
  width: 100%;
  height: 260px;
  object-fit: cover;
  display: block;
  border-top-left-radius: inherit;
  border-top-right-radius: inherit;
}
.content-modal-body {
  padding: 26px 28px 30px;
}
.content-modal-title {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}
.content-modal-desc {
  margin-top: 14px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-secondary, var(--text-muted));
}
.content-modal-features {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.content-modal-features span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 12px;
  font: 600 12px var(--font-text);
  color: var(--text-muted);
}
.app-tile, .panel-card {
  cursor: pointer;
}

/* Compact application tiles (reuses .capability card/hover styling) */
.app-tile {
  padding: 0 !important;
  min-height: 0 !important;
  display: flex;
  flex-direction: column;
}
.app-tile.has-photo img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  display: block;
}
.app-tile-body {
  padding: 18px 20px 20px;
}
.app-tile h3 {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}
.app-tile p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text-muted);
}
.app-tile-tags {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.app-tile-tags span {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 10px;
  font: 600 10px var(--font-text);
  letter-spacing: 0.02em;
  color: var(--text-muted);
}

.logo-lockup {
  color: var(--text-primary);
}

.logo-mark {
  color: var(--text-primary);
  transition: color 0.25s ease, transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.logo-lockup:hover .logo-mark {
  transform: rotate(-6deg) scale(1.05);
}

.logo-node {
  transform-box: fill-box;
  transform-origin: center;
  animation: logoPulse 2.6s ease-in-out infinite;
}

@keyframes logoPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.72); }
}

@media (prefers-reduced-motion: reduce) {
  .logo-node { animation: none; }
}

.network-canvas {
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to right, transparent 0%, transparent 26%, black 56%);
  mask-image: linear-gradient(to right, transparent 0%, transparent 26%, black 56%);
}

.node {
  border-radius: 50% !important;
  background: var(--accent) !important;
  box-shadow: 0 0 14px var(--accent) !important;
}

.data-line {
  background: linear-gradient(90deg, transparent, var(--accent), transparent) !important;
}

/* ==========================================================================
   8. COLOR TOKEN MAP FOR TAILWIND HARDCODED UTILITIES
   ========================================================================== */
.text-white {
  color: var(--text-primary) !important;
}

.text-zinc-300 {
  color: var(--text-secondary) !important;
}

.text-zinc-400 {
  color: var(--text-muted) !important;
}

.text-zinc-500 {
  color: var(--text-tertiary) !important;
}

.bg-black {
  background-color: var(--canvas) !important;
}

.bg-\[\#080808\], .bg-\[\#101010\], .bg-\[\#161616\] {
  background-color: var(--surface-card) !important;
}

.bg-\[\#050505\], .bg-\[\#1a1a1a\], .bg-zinc-900 {
  background-color: var(--surface-elevated) !important;
}

.border-zinc-900, .border-zinc-800, .border-zinc-700, .border-white, .line {
  border-color: var(--line) !important;
}

/* Products Sticky Stack in Apple Style */
.product {
  border-radius: var(--card-radius-lg) !important;
  background: var(--surface-card) !important;
  border: 1px solid var(--line) !important;
  box-shadow: var(--card-shadow) !important;
}

.product:nth-of-type(even) {
  background: var(--surface-card-hover) !important;
}

html.light .product {
  background: var(--surface-card) !important;
}

html.light .product:nth-of-type(even) {
  background: #ffffff !important;
}

/* ==========================================================================
   9. MOBILE SCREEN BREAKOUT NAVIGATION (APPLE FULL-SCREEN TAKEOVER)
   ========================================================================== */
.menu-toggle {
  display: flex !important;
  flex-direction: column !important;
  justify-content: center !important;
  align-items: center !important;
  width: 38px !important;
  height: 38px !important;
  background: var(--btn-secondary-bg) !important;
  border: 1px solid var(--btn-secondary-border) !important;
  border-radius: 50% !important;
  cursor: pointer !important;
  padding: 0 !important;
  gap: 5px !important;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1) !important;
  z-index: 60 !important;
  flex-shrink: 0;
}

.menu-toggle:hover {
  background: rgba(255, 255, 255, 0.16) !important;
  border-color: var(--line-strong) !important;
  transform: scale(1.05);
}

html.light .menu-toggle:hover {
  background: rgba(0, 0, 0, 0.08) !important;
  border-color: var(--line-strong) !important;
  transform: scale(1.05);
}

.menu-bar {
  width: 16px;
  height: 1.5px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease, background-color 0.3s ease;
  pointer-events: none;
}

/* Animated Hamburger to X transition */
.menu-toggle.open .top-bar {
  transform: translateY(3.25px) rotate(45deg);
}

.menu-toggle.open .bottom-bar {
  transform: translateY(-3.25px) rotate(-45deg);
}

nav.has-mobile-open {
  background: rgba(0, 0, 0, 0.95) !important;
}

html.light nav.has-mobile-open {
  background: rgba(251, 251, 253, 0.96) !important;
}

/* Mobile Breakout Menu Full-Screen Overlay */
.mobile-breakout-menu {
  position: fixed !important;
  top: 80px !important;
  left: 0 !important;
  right: 0 !important;
  bottom: 0 !important;
  width: 100vw !important;
  height: calc(100vh - 80px) !important;
  height: calc(100dvh - 80px) !important;
  background: rgba(0, 0, 0, 0.95) !important;
  backdrop-filter: saturate(180%) blur(30px) !important;
  -webkit-backdrop-filter: saturate(180%) blur(30px) !important;
  border-top: 1px solid var(--line) !important;
  z-index: 55 !important;
  overflow-y: auto !important;
  overscroll-behavior: contain !important;
  padding-bottom: max(32px, env(safe-area-inset-bottom, 32px)) !important;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 0.32s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.32s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.32s !important;
}

html.light .mobile-breakout-menu {
  background: rgba(251, 251, 253, 0.96) !important;
}

.mobile-breakout-menu.open {
  opacity: 1 !important;
  visibility: visible !important;
  pointer-events: auto !important;
  transform: translateY(0) !important;
}

/* Mobile Nav Links */
.mobile-nav-item {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  padding: 16px 0 !important;
  border-bottom: 1px solid var(--line) !important;
  font-family: var(--font-display) !important;
  font-size: clamp(22px, 6vw, 28px) !important;
  font-weight: 600 !important;
  letter-spacing: -0.02em !important;
  color: var(--text-primary) !important;
  text-decoration: none !important;
  opacity: 0;
  transform: translateY(-6px);
  transition: opacity 0.28s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.28s cubic-bezier(0.16, 1, 0.3, 1),
              color 0.2s ease !important;
}

.mobile-breakout-menu.open .mobile-nav-item {
  opacity: 1 !important;
  transform: translateY(0) !important;
}

.mobile-breakout-menu.open .mobile-nav-item:nth-child(1) { transition-delay: 0.04s; }
.mobile-breakout-menu.open .mobile-nav-item:nth-child(2) { transition-delay: 0.08s; }
.mobile-breakout-menu.open .mobile-nav-item:nth-child(3) { transition-delay: 0.12s; }
.mobile-breakout-menu.open .mobile-nav-item:nth-child(4) { transition-delay: 0.16s; }
.mobile-breakout-menu.open .mobile-nav-item:nth-child(5) { transition-delay: 0.20s; }

.mobile-nav-item:hover, .mobile-nav-item:active {
  color: var(--accent) !important;
  transform: translateX(6px) !important;
}

.mobile-nav-arrow {
  font-size: 18px !important;
  color: var(--text-muted) !important;
  transition: transform 0.2s ease, color 0.2s ease !important;
}

.mobile-nav-item:hover .mobile-nav-arrow,
.mobile-nav-item:active .mobile-nav-arrow {
  color: var(--accent) !important;
  transform: translateX(4px) !important;
}

/* Breakout Footer Content */
.mobile-breakout-footer {
  margin-top: auto !important;
  padding-top: 24px !important;
  border-top: 1px solid var(--line) !important;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.32s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.32s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-breakout-menu.open .mobile-breakout-footer {
  opacity: 1 !important;
  transform: translateY(0) !important;
  transition-delay: 0.22s;
}

@media (min-width: 768px) {
  .mobile-breakout-menu,
  .menu-toggle {
    display: none !important;
  }
}