/**
 * Multi Tube Views (MTV) — Clean Minimalism Design System
 * Apple-inspired clean minimalism, high contrast, refined neutrals, and precision spacing.
 */

@import "./growth.css";

:root {
  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Monaco, Consolas, monospace;

  /* Clean Minimalism Light Theme Tokens */
  --bg-primary: #FDFDFD;
  --bg-surface: #FFFFFF;
  --bg-surface-elevated: #FFFFFF;
  --bg-subtle: #F5F5F7;
  --bg-hover: #F9FAFB;
  
  --text-primary: #1D1D1F;
  --text-secondary: #86868B;
  --text-muted: #86868B;
  --text-inverse: #FFFFFF;

  --border-subtle: #F2F2F2;
  --border-strong: #E5E5E7;
  --border-focus: #0066CC;

  --accent-primary: #1D1D1F;
  --accent-primary-hover: #000000;
  --accent-blue: #0066CC;
  --accent-subtle: #F5F5F7;
  --accent-border: #E5E5E7;

  --success-bg: #F2FBF4;
  --success-text: #34C759;
  --success-border: #D1F2D9;

  --warning-bg: #FFF9F0;
  --warning-text: #FF9500;
  --warning-border: #FFE5B4;

  --danger-bg: #FFF2F2;
  --danger-text: #FF3B30;
  --danger-border: #FFD1D1;

  /* Shadows — Refined Soft, Two-Layer Elevation Tokens for Real Depth */
  --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.05), 0 3px 8px -1px rgba(15, 23, 42, 0.07);
  --shadow-md: 0 2px 6px -1px rgba(15, 23, 42, 0.07), 0 10px 24px -4px rgba(15, 23, 42, 0.10);
  --shadow-lg: 0 4px 12px -2px rgba(15, 23, 42, 0.08), 0 18px 36px -6px rgba(15, 23, 42, 0.13);
  --shadow-xl: 0 8px 20px -3px rgba(15, 23, 42, 0.09), 0 28px 52px -10px rgba(15, 23, 42, 0.16);
  --shadow-icon: 0 2px 6px -1px rgba(15, 23, 42, 0.10), 0 8px 18px -2px rgba(15, 23, 42, 0.12);
  --shadow-icon-hover: 0 4px 10px -1px rgba(15, 23, 42, 0.14), 0 12px 24px -3px rgba(0, 102, 204, 0.20);

  /* Radii */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  --radius-full: 9999px;

  /* Layout */
  --header-height: 60px;
  --max-width: 1760px;
  --transition-speed: 0.18s;
}

[data-theme="dark"] {
  --bg-primary: #0A0A0C;
  --bg-surface: #161618;
  --bg-surface-elevated: #1D1D20;
  --bg-subtle: #242428;
  --bg-hover: #2C2C30;

  --text-primary: #F5F5F7;
  --text-secondary: #A1A1A6;
  --text-muted: #86868B;
  --text-inverse: #1D1D1F;

  --border-subtle: #242428;
  --border-strong: #38383E;
  --border-focus: #2997FF;

  --accent-primary: #F5F5F7;
  --accent-primary-hover: #FFFFFF;
  --accent-blue: #2997FF;
  --accent-subtle: #1C2733;
  --accent-border: #2B4058;

  --success-bg: #0A2412;
  --success-text: #30D158;
  --success-border: #144422;

  --warning-bg: #2B1800;
  --warning-text: #FF9F0A;
  --warning-border: #523100;

  --danger-bg: #2C0B0E;
  --danger-text: #FF453A;
  --danger-border: #5C151B;

  --shadow-sm: 0 2px 8px -2px rgba(0, 0, 0, 0.35), 0 1px 3px -1px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.45), 0 2px 8px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 36px -6px rgba(0, 0, 0, 0.55), 0 4px 12px -3px rgba(0, 0, 0, 0.35);
  --shadow-xl: 0 24px 48px -10px rgba(0, 0, 0, 0.65), 0 8px 20px -4px rgba(0, 0, 0, 0.4);
}

/* Base Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

/* Global Invisible Scrollbars across Desktop and Mobile */
html,
body,
* {
  scrollbar-width: none !important; /* Firefox */
  -ms-overflow-style: none !important; /* IE & Edge */
  scrollbar-gutter: auto !important; /* Prevent reserved empty scrollbar gap */
}

html::-webkit-scrollbar,
body::-webkit-scrollbar,
*::-webkit-scrollbar {
  display: none !important;
  width: 0 !important;
  height: 0 !important;
  background: transparent !important;
}

html::-webkit-scrollbar-thumb,
body::-webkit-scrollbar-thumb,
*::-webkit-scrollbar-thumb {
  display: none !important;
  background: transparent !important;
}

html::-webkit-scrollbar-track,
body::-webkit-scrollbar-track,
*::-webkit-scrollbar-track {
  display: none !important;
  background: transparent !important;
}

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  background-image: 
    radial-gradient(ellipse 950px 480px at 50% -60px, rgba(0, 102, 204, 0.03) 0%, rgba(139, 92, 246, 0.02) 45%, transparent 75%),
    radial-gradient(ellipse 800px 520px at 92% 700px, rgba(6, 182, 212, 0.02) 0%, rgba(0, 102, 204, 0.015) 40%, transparent 75%),
    radial-gradient(ellipse 750px 480px at 8% 1500px, rgba(139, 92, 246, 0.02) 0%, rgba(0, 102, 204, 0.012) 50%, transparent 75%),
    radial-gradient(ellipse 900px 520px at 50% 2300px, rgba(0, 102, 204, 0.015) 0%, rgba(6, 182, 212, 0.012) 50%, transparent 80%);
  background-repeat: no-repeat;
  color: var(--text-primary);
  overflow-x: hidden;
  width: 100%;
}

[data-theme="dark"] body {
  background-image: 
    radial-gradient(ellipse 900px 450px at 50% -40px, rgba(41, 151, 255, 0.038) 0%, rgba(168, 85, 247, 0.022) 45%, transparent 80%),
    radial-gradient(ellipse 800px 500px at 90% 700px, rgba(41, 151, 255, 0.022) 0%, rgba(168, 85, 247, 0.014) 45%, transparent 75%),
    radial-gradient(ellipse 750px 450px at 10% 1500px, rgba(168, 85, 247, 0.02) 0%, rgba(41, 151, 255, 0.014) 50%, transparent 75%),
    radial-gradient(ellipse 850px 500px at 50% 2300px, rgba(41, 151, 255, 0.018) 0%, rgba(168, 85, 247, 0.014) 50%, transparent 80%);
}

body.drawer-open {
  overflow: hidden;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 750;
  line-height: 1.2;
  letter-spacing: -0.028em;
}

h1 { font-size: clamp(1.6rem, 4.2vw, 2.85rem); font-weight: 800; }
h2 { font-size: clamp(1.3rem, 3.2vw, 2.1rem); font-weight: 750; }
h3 { font-size: clamp(1.08rem, 2.3vw, 1.45rem); font-weight: 700; }
h4 { font-size: clamp(0.95rem, 1.8vw, 1.1rem); font-weight: 650; }

p {
  color: var(--text-secondary);
  line-height: 1.62;
  margin-bottom: 1.1rem;
  font-weight: 400;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: opacity var(--transition-speed) ease, transform var(--transition-speed) cubic-bezier(0.16, 1, 0.3, 1);
  touch-action: manipulation;
}

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

a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

/* Form Inputs Mobile Best Practice (16px base font prevents iOS auto-zoom) */
input, select, textarea, button {
  font-size: 16px;
  touch-action: manipulation;
}

/* Global Container */
.container {
  width: min(calc(100% - 42px), var(--max-width, 1760px));
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(0.75rem, 2vw, 1.5rem);
  padding-right: clamp(0.75rem, 2vw, 1.5rem);
}

/* Fluid Full-Width Desktop Layout (Desktop/Laptop >= 993px) */
@media (min-width: 993px) {
  :root {
    --max-width: 1760px;
  }

  .container {
    width: min(calc(100% - 42px), var(--max-width, 1760px));
    padding-left: clamp(1rem, 2vw, 2.5rem);
    padding-right: clamp(1rem, 2vw, 2.5rem);
  }
}

.site-main {
  flex: 1 0 auto;
  padding-bottom: 4rem;
}

/* Breadcrumb Trails — Universally Left-Aligned (Desktop & Mobile) */
.breadcrumb-nav,
.bu-breadcrumbs,
.contact-breadcrumb {
  display: flex !important;
  align-items: center !important;
  justify-content: flex-start !important;
  text-align: left !important;
  margin-left: 0 !important;
  margin-right: auto !important;
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box !important;
}

/* Header & Navigation */
.site-header {
  position: sticky !important;
  top: 0 !important;
  z-index: 1000 !important;
  height: 60px !important;
  min-height: 60px !important;
  max-height: 60px !important;
  margin: 0 !important;
  padding: 0 !important;
  box-sizing: border-box !important;
  background-color: rgba(253, 253, 253, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transform: translateZ(0);
}

[data-theme="dark"] .site-header {
  background-color: rgba(10, 10, 12, 0.85);
}

.header-inner {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  height: 100% !important;
  min-height: 60px !important;
  max-height: 60px !important;
  margin: 0 auto !important;
  padding-top: 0 !important;
  padding-bottom: 0 !important;
  box-sizing: border-box !important;
}

@media (min-width: 781px) {
  .header-inner {
    position: relative !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    height: 100% !important;
    min-height: 60px !important;
    max-height: 60px !important;
    margin: 0 auto !important;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
    box-sizing: border-box !important;
  }

  .brand {
    position: relative !important;
    z-index: 2 !important;
    display: inline-flex !important;
    align-items: center !important;
    flex-shrink: 0 !important;
  }

  .nav-desktop {
    position: absolute !important;
    left: 50% !important;
    top: 50% !important;
    transform: translate(-50%, -50%) !important;
    z-index: 1 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    margin: 0 !important;
    padding: 0 !important;
    max-width: calc(100% - 280px) !important;
    white-space: nowrap !important;
    overflow: visible !important;
    pointer-events: auto !important;
  }

  .header-actions {
    position: relative !important;
    z-index: 2 !important;
    display: inline-flex !important;
    align-items: center !important;
    justify-content: flex-end !important;
    flex-shrink: 0 !important;
    margin-left: auto !important;
  }
}

@keyframes brandLogoEntrance {
  0% {
    opacity: 0;
    transform: scale(0.85) translateY(2px);
  }
  100% {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
  transition: opacity var(--transition-speed) ease;
}

.brand:hover {
  color: var(--text-primary);
  opacity: 0.95;
}

.brand:hover .brand-icon {
  transform: scale(1.08) rotate(-2deg);
  box-shadow: var(--shadow-icon-hover);
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--text-primary);
  color: var(--bg-surface);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  box-shadow: var(--shadow-icon);
  opacity: 1;
  transition: transform 260ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] .brand-icon {
  background: #FFFFFF;
  color: #1D1D1F;
}

.brand-text {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.brand-badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-full);
  background-color: var(--bg-subtle);
  color: var(--text-secondary);
  border: 1px solid var(--border-strong);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: nowrap;
  
  /* Flexbox / Grid space allocation */
  flex: 0 1 auto;
  min-width: 0;
  
  /* Centered positioning */
  margin: 0 !important;
  padding-left: 4px;
  padding-right: 4px;
  
  /* Non-blocking dynamic fade mask for edges */
  mask-image: none;
  -webkit-mask-image: none;
  transition: mask-image 0.2s ease, -webkit-mask-image 0.2s ease;
}

@media (min-width: 1400px) {
  .nav-desktop {
    margin: 0 !important;
  }
}

/* Dynamic edge fade masks based on scrolling status */
.nav-desktop.can-scroll-left.can-scroll-right {
  mask-image: linear-gradient(to right, transparent, black 24px, black calc(100% - 24px), transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 24px, black calc(100% - 24px), transparent);
}

.nav-desktop:not(.can-scroll-left).can-scroll-right {
  mask-image: linear-gradient(to right, black, black calc(100% - 24px), transparent);
  -webkit-mask-image: linear-gradient(to right, black, black calc(100% - 24px), transparent);
}

.nav-desktop.can-scroll-left:not(.can-scroll-right) {
  mask-image: linear-gradient(to right, transparent, 24px, black);
  -webkit-mask-image: linear-gradient(to right, transparent, 24px, black);
}

.nav-desktop:active {
  cursor: grabbing;
}

.nav-desktop::-webkit-scrollbar {
  display: none;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 550;
  color: var(--text-secondary);
  padding: 0.35rem 0.38rem;
  position: relative;
  transition: color var(--transition-speed) ease, opacity var(--transition-speed) ease, transform var(--transition-speed) cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
  user-select: none;
  -webkit-user-drag: none;
  text-decoration: none;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
}

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

.nav-link.active {
  color: var(--text-primary);
  font-weight: 650;
}

/* Home label prominent styling */
.nav-link-home {
  font-weight: 700 !important;
  color: var(--text-primary) !important;
}

.nav-link-home:not(.active) {
  opacity: 0.88;
}

.nav-link-home.active {
  font-weight: 850 !important;
  opacity: 1;
}

/* Info Dropdown Container (Desktop) */
.nav-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
  margin: 0;
  margin-right: 0.25rem;
  padding: 0;
}

.nav-dropdown-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: transparent;
  border: none;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 550;
  color: var(--text-secondary);
  padding: 0.35rem 0.38rem;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  border-radius: var(--radius-sm);
  transition: color var(--transition-speed) ease, opacity var(--transition-speed) ease;
  line-height: 1;
}

.nav-dropdown-btn:hover {
  color: var(--text-primary);
}

.nav-dropdown-btn.active,
.nav-dropdown.active .nav-dropdown-btn,
.nav-dropdown.open .nav-dropdown-btn {
  color: var(--text-primary);
  font-weight: 650;
}

.nav-dropdown-btn .dropdown-chevron {
  transition: transform 0.24s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
  opacity: 0.75;
  flex-shrink: 0;
  pointer-events: none;
}

.nav-dropdown.open .dropdown-chevron {
  transform: rotate(180deg);
  opacity: 1;
}

/* Glassy / Frosted-Blur Dropdown Menu Panel */
.nav-dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 175px;
  padding: 0.4rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 0 12px 36px -4px rgba(0, 0, 0, 0.12), 0 4px 12px -2px rgba(0, 0, 0, 0.06);
  z-index: 1050;
  
  /* Animated visibility */
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-8px) scale(0.97);
  transform-origin: top right;
  transition: opacity 0.2s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.2s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.2s;
}

[data-theme="dark"] .nav-dropdown-menu {
  background: rgba(18, 20, 26, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 16px 40px -4px rgba(0, 0, 0, 0.55), 0 4px 14px -2px rgba(0, 0, 0, 0.35);
}

.nav-dropdown.open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

/* Dropdown Items with Staggered Entrance Animation */
.nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.55rem 0.75rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 8px;
  white-space: nowrap;
  user-select: none;
  background: transparent;
  
  /* Staggered animation properties */
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.18s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.18s cubic-bezier(0.16, 1, 0.3, 1),
              background-color 0.15s ease,
              color 0.15s ease;
  transition-delay: 0ms;
}

.nav-dropdown.open .nav-dropdown-item {
  opacity: 1;
  transform: translateX(0);
  transition-delay: calc(var(--item-index, 0) * 45ms);
}

.nav-dropdown-item:hover,
.nav-dropdown-item:focus-visible {
  color: var(--text-primary);
  background: var(--bg-subtle);
}

[data-theme="dark"] .nav-dropdown-item:hover,
[data-theme="dark"] .nav-dropdown-item:focus-visible {
  background: rgba(255, 255, 255, 0.08);
  color: #FFFFFF;
}

.nav-dropdown-item.active {
  color: var(--accent-blue, #2563EB);
  font-weight: 600;
  background: var(--accent-subtle, rgba(37, 99, 235, 0.08));
}

.nav-dropdown-icon {
  flex-shrink: 0;
  opacity: 0.75;
  transition: opacity 0.15s ease, transform 0.15s ease;
}

.nav-dropdown-item:hover .nav-dropdown-icon {
  opacity: 1;
  transform: scale(1.05);
}

/* Responsive navigation scaling for narrow desktop / medium screen widths */
@media (max-width: 1280px) and (min-width: 1025px) {
  .nav-desktop {
    gap: 0.2rem !important;
    margin: 0 !important;
    max-width: calc(100% - 260px) !important;
  }
  .nav-link,
  .nav-dropdown-btn {
    font-size: 0.84rem !important;
    padding: 0.32rem 0.38rem !important;
  }
}

@media (max-width: 1024px) and (min-width: 881px) {
  .brand-text span:first-child {
    font-size: 0.84rem !important;
  }
  .brand-badge {
    display: none !important;
  }
  .nav-desktop {
    gap: 0.15rem !important;
    margin: 0 !important;
    max-width: calc(100% - 200px) !important;
  }
  .nav-link,
  .nav-dropdown-btn {
    font-size: 0.76rem !important;
    letter-spacing: -0.02em !important;
    padding: 0.26rem 0.3rem !important;
  }
}

@media (max-width: 880px) and (min-width: 781px) {
  .brand-icon {
    width: 30px !important;
    height: 30px !important;
    font-size: 0.72rem !important;
  }
  .brand-text span:first-child {
    font-size: 0.78rem !important;
  }
  .brand-badge {
    display: none !important;
  }
  .nav-desktop {
    gap: 0.1rem !important;
    margin: 0 !important;
    max-width: calc(100% - 170px) !important;
  }
  .nav-link,
  .nav-dropdown-btn {
    font-size: 0.71rem !important;
    letter-spacing: -0.025em !important;
    padding: 0.22rem 0.24rem !important;
  }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Button System — Clean Minimalism */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--transition-speed) cubic-bezier(0.16, 1, 0.3, 1);
  user-select: none;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: var(--text-inverse);
  border-color: var(--accent-primary);
}

.btn-primary:hover {
  background-color: var(--accent-primary-hover);
  border-color: var(--accent-primary-hover);
  color: var(--text-inverse);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 102, 204, 0.22);
}

.btn-secondary {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background-color: var(--bg-subtle);
  color: var(--text-primary);
  border-color: var(--text-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-subtle {
  background-color: var(--bg-subtle);
  color: var(--text-primary);
  border-color: transparent;
}

.btn-subtle:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.btn-danger {
  background-color: var(--danger-bg);
  color: var(--danger-text);
  border-color: var(--danger-border);
}

.btn-danger:hover {
  background-color: #fee2e2;
  transform: translateY(-1px);
}

.btn-icon-only {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius-full);
  color: var(--text-primary);
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-strong);
  transition: transform var(--transition-speed) cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-icon-only:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--text-primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-sm {
  font-size: 0.8rem;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
}

.btn-lg {
  font-size: 0.95rem;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius-full);
}

/* Card System */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-speed) ease;
}

@media (min-width: 993px) {
  .card {
    padding: clamp(1.75rem, 2.2vw, 2.5rem);
    border-radius: var(--radius-xl, 20px);
  }
}

.card-hoverable:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

/* Footer — Deep Dark Premium Navy/Indigo Gradient Background & White Text */
.site-footer {
  margin-top: auto;
  background: linear-gradient(135deg, #0a0e1a 0%, #0f172a 50%, #130c24 100%) !important;
  border-top: 1px solid rgba(255, 255, 255, 0.12) !important;
  padding: 3.5rem 0 2rem 0;
  opacity: 1 !important;
  visibility: visible !important;
  color: #ffffff !important;
}

.site-footer *,
.site-footer p,
.site-footer span,
.site-footer a,
.site-footer h3,
.site-footer h4,
.footer-col h4,
.footer-links a,
.footer-bottom,
.footer-bottom-info,
.creator-credit,
.creator-name,
.creator-link,
.footer-bottom-links a,
.footer-brand p,
.footer-brand h3,
.footer-brand-link,
.footer-brand-link h3 {
  color: #ffffff !important;
}

.site-footer .footer-grid,
.site-footer .footer-bottom {
  opacity: 1 !important;
  visibility: visible !important;
}

@media (min-width: 993px) {
  .site-footer {
    padding: clamp(4.5rem, 5.5vw, 6rem) 0 2.5rem 0;
  }
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
}

@media (min-width: 993px) {
  .footer-grid {
    gap: clamp(2.5rem, 3.5vw, 4rem);
    margin-bottom: 3rem;
  }
}

.footer-brand-link {
  text-decoration: none;
  color: #ffffff !important;
  display: inline-block;
  margin-bottom: 0.75rem;
  border-radius: var(--radius-md);
}

.footer-brand-link:hover {
  opacity: 0.95;
}

.footer-brand-link h3 {
  margin-bottom: 0;
  color: #ffffff !important;
  font-weight: 750 !important;
}

.footer-brand h3 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.1rem;
  font-weight: 750 !important;
  margin-bottom: 0.75rem;
  color: #ffffff !important;
}

.footer-brand .brand-icon {
  width: 36px;
  height: 36px;
  min-width: 36px;
  min-height: 36px;
  border-radius: var(--radius-md);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #FFFFFF !important;
  color: #1e3a8a !important;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  box-shadow: 0 2px 10px rgba(255, 255, 255, 0.25);
  flex-shrink: 0;
}

[data-theme="dark"] .footer-brand .brand-icon {
  background: #FFFFFF !important;
  color: #1e3a8a !important;
  box-shadow: 0 2px 10px rgba(255, 255, 255, 0.25) !important;
}

[data-theme="dark"] .footer-brand-link,
[data-theme="dark"] .footer-brand-link h3,
[data-theme="dark"] .footer-brand h3 {
  color: #FFFFFF !important;
}

.footer-brand p {
  font-size: 0.88rem;
  color: #ffffff !important;
  max-width: 360px;
  line-height: 1.55;
  opacity: 0.95;
}

.footer-col h4 {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 750 !important;
  color: #ffffff !important;
  margin-bottom: 1.25rem;
  opacity: 0.9;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  font-size: 0.88rem;
  color: #ffffff !important;
  opacity: 0.9;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15) !important;
  font-size: 0.82rem;
  color: #ffffff !important;
}

.footer-bottom-info {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.creator-credit {
  font-size: 0.78rem;
  color: #ffffff !important;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  opacity: 0.9;
}

.creator-name {
  font-weight: 750 !important;
  color: #ffffff !important;
}

.creator-sep {
  opacity: 0.6 !important;
  color: #ffffff !important;
}

.creator-link {
  color: #ffffff !important;
  text-decoration: underline;
  text-underline-offset: 2px;
  opacity: 0.95;
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom-links a {
  color: #ffffff !important;
  opacity: 0.9;
}

/* Footer Social Icons Row */
.footer-social-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.45rem;
}

/* Platform specific variables */
.footer-social-link[href*="instagram.com"] {
  --social-hover-bg: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
  --social-hover-color: #ffffff;
}
.footer-social-link[href*="youtube.com"] {
  --social-hover-bg: #ff0000;
  --social-hover-color: #ffffff;
}
.footer-social-link[href*="tiktok.com"] {
  --social-hover-bg: #000000;
  --social-hover-color: #ffffff;
}
.footer-social-link[href*="facebook.com"] {
  --social-hover-bg: #1877f2;
  --social-hover-color: #ffffff;
}
.footer-social-link[href*="whatsapp.com"] {
  --social-hover-bg: #25d366;
  --social-hover-color: #ffffff;
}

.footer-social-link,
.site-footer .footer-social-link {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  width: 28px !important;
  height: 28px !important;
  min-width: 28px !important;
  min-height: 28px !important;
  padding: 0 !important;
  margin: 0 !important;
  border-radius: 6px !important;
  color: var(--text-secondary) !important;
  background-color: transparent !important;
  border: none !important;
  box-shadow: none !important;
  text-decoration: none !important;
  position: relative !important;
  overflow: hidden !important;
  z-index: 1 !important;
  transition: transform 350ms cubic-bezier(0.4, 0, 0.2, 1), border-radius 350ms cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.footer-social-link::before {
  content: "" !important;
  position: absolute !important;
  bottom: -50% !important;
  left: -25% !important;
  width: 150% !important;
  height: 150% !important;
  background: var(--social-hover-bg, var(--accent-blue)) !important;
  border-radius: 50% !important;
  transform: scale(0) !important;
  transform-origin: center bottom !important;
  transition: transform 350ms cubic-bezier(0.4, 0, 0.2, 1) !important;
  z-index: -1 !important;
}

.footer-social-link svg {
  width: 15px;
  height: 15px;
  fill: currentColor;
  display: block;
  position: relative !important;
  z-index: 2 !important;
}

@media (hover: hover) and (pointer: fine) {
  .footer-social-link:hover,
  .site-footer .footer-social-link:hover {
    color: var(--social-hover-color, #ffffff) !important;
    border-radius: 50% !important;
    transform: translateY(-2px) !important;
    background-color: transparent !important;
    box-shadow: none !important;
  }
  .footer-social-link:hover::before {
    transform: scale(1) !important;
  }
  .footer-social-link:hover svg {
    fill: var(--social-hover-color, #ffffff) !important;
  }
}

/* Fallback active/tapped styles for touch screens */
.footer-social-link:active,
.footer-social-link.tapped {
  color: var(--social-hover-color, #ffffff) !important;
  border-radius: 50% !important;
  transform: translateY(-2px) !important;
  background-color: transparent !important;
}
.footer-social-link:active::before,
.footer-social-link.tapped::before {
  transform: scale(1) !important;
}
.footer-social-link:active svg,
.footer-social-link.tapped svg {
  fill: var(--social-hover-color, #ffffff) !important;
}

/* Universal Footer Clickable Item Hover-Lift & Soft Shadow System */
.site-footer a,
.site-footer button,
.footer-links a,
.footer-bottom-links a,
.creator-link,
.footer-brand-link {
  display: inline-flex;
  align-items: center;
  position: relative;
  padding: 0.25rem 0.6rem;
  margin: -0.25rem -0.6rem;
  border-radius: var(--radius-sm, 8px);
  transition: transform 260ms cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, box-shadow;
}

@media (hover: hover) and (pointer: fine) {
  .site-footer a:hover,
  .site-footer button:hover,
  .footer-links a:hover,
  .footer-bottom-links a:hover,
  .creator-link:hover,
  .footer-brand-link:hover {
    transform: translateY(-2.5px);
    color: #ffffff !important;
    background-color: rgba(255, 255, 255, 0.15) !important;
    box-shadow: 0 8px 20px -4px rgba(0, 0, 0, 0.3), 0 2px 6px -2px rgba(0, 0, 0, 0.2);
  }

  [data-theme="dark"] .site-footer a:hover,
  [data-theme="dark"] .site-footer button:hover,
  [data-theme="dark"] .footer-links a:hover,
  [data-theme="dark"] .footer-bottom-links a:hover,
  [data-theme="dark"] .creator-link:hover,
  [data-theme="dark"] .footer-brand-link:hover {
    color: #ffffff !important;
    background-color: rgba(255, 255, 255, 0.15) !important;
    box-shadow: 0 8px 24px -4px rgba(0, 0, 0, 0.5), 0 2px 8px -2px rgba(0, 0, 0, 0.3);
  }
}

/* ==========================================================================
   Display, Accessibility & Performance Modes
   ========================================================================== */

/* Compact Density */
[data-density="compact"] {
  --header-height: 54px;
}
[data-density="compact"] .container {
  padding-left: 1rem;
  padding-right: 1rem;
}
[data-density="compact"] .card {
  padding: 1rem;
  gap: 0.75rem;
}
[data-density="compact"] .nav-link {
  padding: 0.35rem 0.65rem;
  font-size: 0.85rem;
}
[data-density="compact"] p {
  margin-bottom: 0.65rem;
  line-height: 1.5;
}

/* Font Scaling */
[data-font-scale="large"] {
  font-size: 18px;
}
[data-font-scale="compact"] {
  font-size: 14.5px;
}

/* High Contrast Mode */
[data-contrast="high"] {
  --text-secondary: #333336;
  --text-muted: #222225;
  --border-subtle: #8E8E93;
  --border-strong: #000000;
  --border-focus: #0040DD;
}
[data-theme="dark"][data-contrast="high"] {
  --text-secondary: #EBEBF0;
  --text-muted: #D1D1D6;
  --border-subtle: #636366;
  --border-strong: #FFFFFF;
  --border-focus: #409CFF;
}
[data-contrast="high"] .card,
[data-contrast="high"] .btn,
[data-contrast="high"] input,
[data-contrast="high"] select,
[data-contrast="high"] textarea {
  border-width: 2px !important;
}

/* Prominent Focus Indicators */
[data-focus="prominent"] a:focus-visible,
[data-focus="prominent"] button:focus-visible,
[data-focus="prominent"] input:focus-visible,
[data-focus="prominent"] select:focus-visible,
[data-focus="prominent"] textarea:focus-visible,
[data-focus="prominent"] [tabindex]:focus-visible {
  outline: 3px solid var(--border-focus) !important;
  outline-offset: 3px !important;
  box-shadow: 0 0 0 6px rgba(0, 102, 204, 0.25) !important;
}

/* Reduced Motion & Off */
[data-motion="reduced"] *,
[data-motion="off"] *,
[data-transitions="off"] * {
  animation-duration: 0.001ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.001ms !important;
  scroll-behavior: auto !important;
}

/* UI Effects Off / Lightweight UI Mode */
[data-effects="off"],
[data-lightweight="true"] {
  --shadow-sm: none;
  --shadow-md: none;
  --shadow-lg: none;
  --shadow-xl: none;
}
[data-lightweight="true"] .site-header {
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
}
[data-lightweight="true"] * {
  box-shadow: none !important;
  text-shadow: none !important;
}

/* ==========================================================================
   Desktop Site-Wide Ambient Background System (Inner Pages - Lighter Variant)
   ========================================================================== */
@media (min-width: 769px) {
  :root {
    --ambient-line: rgba(15, 23, 42, 0.065);
  }

  [data-theme="dark"] {
    --ambient-line: rgba(255, 255, 255, 0.065);
  }

  .page-glow {
    position: fixed;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 1000px;
    height: 600px;
    background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.055) 0%, rgba(139, 92, 246, 0.035) 40%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    filter: blur(40px);
    opacity: 0.72;
  }

  .page-glow-2 {
    position: fixed;
    top: 35%;
    right: -200px;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.04) 0%, rgba(59, 130, 246, 0.02) 45%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    filter: blur(50px);
    opacity: 0.72;
  }

  .page-glow-3 {
    position: fixed;
    top: 65%;
    left: -200px;
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.04) 0%, rgba(236, 72, 153, 0.02) 45%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    filter: blur(50px);
    opacity: 0.72;
  }

  .grid-overlay {
    position: fixed;
    inset: 0;
    background-image: 
      linear-gradient(to right, var(--ambient-line, rgba(15, 23, 42, 0.065)) 1px, transparent 1px),
      linear-gradient(to bottom, var(--ambient-line, rgba(15, 23, 42, 0.065)) 1px, transparent 1px);
    background-size: 52px 52px;
    mask-image: radial-gradient(ellipse at 50% 30%, black 20%, transparent 80%);
    -webkit-mask-image: radial-gradient(ellipse at 50% 30%, black 20%, transparent 80%);
    pointer-events: none;
    z-index: 0;
    opacity: 0.36;
  }

  [data-theme="dark"] .grid-overlay {
    opacity: 0.52;
  }

  /* Make sure main page containers sit above ambient layer */
  .site-main,
  .site-footer {
    position: relative;
    z-index: 1;
  }
}

/* Mobile Ambient Background: Site-Wide Ambient Background System */
@media (max-width: 768px) {
  .page-glow {
    position: fixed !important;
    top: -200px !important;
    left: 50% !important;
    transform: translateX(-50%) !important;
    width: 1000px !important;
    height: 600px !important;
    background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.055) 0%, rgba(139, 92, 246, 0.035) 40%, transparent 70%) !important;
    pointer-events: none !important;
    z-index: 0 !important;
    filter: blur(40px) !important;
    opacity: 0.72 !important;
    display: block !important;
  }

  .page-glow-2 {
    position: fixed !important;
    top: 35% !important;
    right: -200px !important;
    width: 700px !important;
    height: 700px !important;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.04) 0%, rgba(59, 130, 246, 0.02) 45%, transparent 70%) !important;
    pointer-events: none !important;
    z-index: 0 !important;
    filter: blur(50px) !important;
    opacity: 0.72 !important;
    display: block !important;
  }

  .page-glow-3 {
    position: fixed !important;
    top: 65% !important;
    left: -200px !important;
    width: 700px !important;
    height: 700px !important;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.04) 0%, rgba(236, 72, 153, 0.02) 45%, transparent 70%) !important;
    pointer-events: none !important;
    z-index: 0 !important;
    filter: blur(50px) !important;
    opacity: 0.72 !important;
    display: block !important;
  }

  .grid-overlay {
    position: fixed !important;
    inset: 0 !important;
    background-image: 
      linear-gradient(to right, var(--ambient-line, rgba(15, 23, 42, 0.065)) 1px, transparent 1px),
      linear-gradient(to bottom, var(--ambient-line, rgba(15, 23, 42, 0.065)) 1px, transparent 1px) !important;
    background-size: 52px 52px !important;
    mask-image: radial-gradient(ellipse at 50% 30%, black 20%, transparent 80%) !important;
    -webkit-mask-image: radial-gradient(ellipse at 50% 30%, black 20%, transparent 80%) !important;
    pointer-events: none !important;
    z-index: 0 !important;
    opacity: 0.36 !important;
    display: block !important;
  }

  [data-theme="dark"] .grid-overlay {
    background-image: 
      linear-gradient(to right, rgba(255, 255, 255, 0.065) 1px, transparent 1px),
      linear-gradient(to bottom, rgba(255, 255, 255, 0.065) 1px, transparent 1px) !important;
    opacity: 0.52 !important;
  }

  .site-main,
  .site-footer {
    position: relative;
    z-index: 1;
  }
}

/* Instantaneous, Uniform Theme Switch & Initial Paint Guard */
html:not(.theme-ready),
html:not(.theme-ready) body,
html:not(.theme-ready) *,
html:not(.theme-ready) *::before,
html:not(.theme-ready) *::after,
html.theme-switching,
html.theme-switching body,
html.theme-switching *,
html.theme-switching *::before,
html.theme-switching *::after,
html[data-theme].theme-switching,
html[data-theme].theme-switching body,
html[data-theme].theme-switching *,
html[data-theme].theme-switching *::before,
html[data-theme].theme-switching *::after,
html.theme-switching [id],
html.theme-switching [id] *,
html.theme-switching [class],
html.theme-switching [class] * {
  -webkit-transition: none !important;
  -moz-transition: none !important;
  -o-transition: none !important;
  -ms-transition: none !important;
  transition: none !important;
}

/* Performance Speed & Smoothness Enhancements */
.card,
.platform-card,
.ai-tool-card,
.creator-tool-card,
.browser-util-card,
.media-tool-card,
.converter-card,
.util-card,
.article-card,
.prompt-card,
.faq-item {
  content-visibility: auto;
  contain-intrinsic-size: 0 240px;
}

@media (max-width: 768px) {
  .site-header {
    backdrop-filter: blur(8px) !important;
    -webkit-backdrop-filter: blur(8px) !important;
  }
}