/* =====================================================
   AcessAI — UX Improvements
   Modern sleek enhancements: animations, glow effects,
   glassmorphism, gradient borders, and micro-interactions.
   ===================================================== */

/* -------------------------------------------------------
   ENHANCED ANIMATED BACKGROUND MESH
   ------------------------------------------------------- */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(56,189,248,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,189,248,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
  z-index: 0;
  animation: meshDrift 30s linear infinite;
}

@keyframes meshDrift {
  0%   { background-position: 0 0; }
  100% { background-position: 60px 60px; }
}

/* -------------------------------------------------------
   ANIMATED GRADIENT BORDER ON KEY CARDS
   Cross-browser approach: animated box-shadow glow ring
   on hover — avoids @property (not in Firefox) entirely.
   ------------------------------------------------------- */
.tool-card,
.feature-card {
  transition: box-shadow 0.4s ease, border-color 0.4s ease, transform 0.35s cubic-bezier(0.22,1,0.36,1);
}

.tool-card::after,
.feature-card::after {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: linear-gradient(135deg,
    rgba(37,99,235,0.6),
    rgba(56,189,248,0.6),
    rgba(129,140,248,0.5),
    rgba(37,99,235,0.6)
  );
  background-size: 300% 300%;
  /*
   * Mask-based 1px border technique (cross-browser):
   * Two overlapping mask layers with mask-composite: exclude
   * reveal only the padding area (1px inset), hiding the content box.
   * This lets the animated gradient show only as a border ring without
   * requiring @property (unavailable in Firefox) or a border-image hack.
   * -webkit-mask-composite: xor is the WebKit equivalent of
   * the standard mask-composite: exclude.
   */
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  /* xor = exclude in standard mask-composite; both values needed for full coverage */
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  padding: 1px;
  animation: gradientBorderShift 4s ease infinite paused;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
  z-index: -1;
}

.tool-card:hover::after,
.feature-card:hover::after {
  opacity: 1;
  animation-play-state: running;
}

@keyframes gradientBorderShift {
  0%   { background-position: 0%   50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0%   50%; }
}

/* -------------------------------------------------------
   ENHANCED GLASSMORPHISM CARDS
   ------------------------------------------------------- */
.tool-card,
.feature-card,
.app-card,
.tech-item,
.principle-card,
.service-card,
.stat-card,
.metric-card {
  box-shadow:
    0 8px 32px rgba(0,0,0,0.4),
    inset 0 1px 0 rgba(255,255,255,0.05) !important;
}

.tool-card:hover,
.feature-card:hover,
.app-card:hover,
.tech-item:hover,
.principle-card:hover,
.service-card:hover {
  box-shadow:
    0 24px 64px rgba(0,0,0,0.55),
    0 0 0 1px rgba(56,189,248,0.2),
    inset 0 1px 0 rgba(255,255,255,0.08) !important;
}

/* -------------------------------------------------------
   ENHANCED BUTTON STYLES — GLOW PULSE + SHIMMER
   ------------------------------------------------------- */
.btn,
.btn-primary,
.btn.btn-primary,
a.btn-primary,
.cta-btn.primary,
button.btn-primary {
  position: relative !important;
  overflow: hidden !important;
}

.btn::before,
.btn-primary::before,
.cta-btn.primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255,255,255,0.15),
    transparent
  );
  transition: left 0.5s ease;
  pointer-events: none;
}

.btn:hover::before,
.btn-primary:hover::before,
.cta-btn.primary:hover::before {
  left: 140%;
}

/* CTA buttons — gentle pulse glow */
.cta-btn.primary,
a.btn-primary,
button.btn-primary {
  animation: ctaPulse 3s ease-in-out infinite;
}

@keyframes ctaPulse {
  0%, 100% { box-shadow: 0 4px 16px rgba(37,99,235,0.4) !important; }
  50%       { box-shadow: 0 4px 28px rgba(37,99,235,0.7), 0 0 0 4px rgba(37,99,235,0.15) !important; }
}

/* -------------------------------------------------------
   HERO — EXTRA LAYERING & TAGLINE
   ------------------------------------------------------- */
.hero-tagline {
  background: linear-gradient(135deg, var(--text-secondary), var(--accent-sky));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.2em;
  font-weight: 600;
}

/* Hero subtitle fade in */
.hero-subtitle-line {
  animation: fadeInUp 1.2s 0.5s cubic-bezier(0.22,1,0.36,1) both;
  color: var(--text-white);
  font-size: clamp(1rem, 2vw, 1.2rem);
  margin-top: 1rem;
  letter-spacing: 0.04em;
}

/* -------------------------------------------------------
   SCROLL REVEAL — RICHER ENTRANCE ANIMATIONS
   ------------------------------------------------------- */
.reveal {
  opacity: 0 !important;
  transform: translateY(36px) !important;
  transition: opacity 0.75s cubic-bezier(0.22,1,0.36,1),
              transform 0.75s cubic-bezier(0.22,1,0.36,1) !important;
}

.reveal.reveal-left  { transform: translateX(-40px) !important; }
.reveal.reveal-right { transform: translateX(40px) !important; }
.reveal.reveal-scale { transform: scale(0.90) !important; }

.reveal.is-visible {
  opacity: 1 !important;
  transform: none !important;
}

/* -------------------------------------------------------
   ACCESSIBLE FOCUS STATES
   ------------------------------------------------------- */
:focus-visible {
  outline: 3px solid var(--accent-sky) !important;
  outline-offset: 3px !important;
  border-radius: 4px !important;
  box-shadow: 0 0 0 6px rgba(56,189,248,0.20) !important;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid var(--accent-sky) !important;
  outline-offset: 3px !important;
}

/* -------------------------------------------------------
   NAVIGATION — ANIMATED UNDERLINE INDICATOR
   ------------------------------------------------------- */
.nav-item.active::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-blue), var(--accent-sky));
  border-radius: 1px;
  box-shadow: 0 0 8px rgba(56,189,248,0.7);
  animation: navIndicatorIn 0.3s ease both;
}

@keyframes navIndicatorIn {
  from { width: 0; opacity: 0; }
  to   { width: 60%; opacity: 1; }
}

/* -------------------------------------------------------
   SECTION TITLES — GRADIENT TEXT
   ------------------------------------------------------- */
.section-title,
.fundamental-section-title {
  background: linear-gradient(135deg, var(--text-white) 0%, var(--accent-sky) 60%, var(--accent-purple) 100%) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  background-clip: text !important;
}

/* -------------------------------------------------------
   STAT NUMBERS — GLOWING ACCENT
   ------------------------------------------------------- */
.stat-number,
.stat-item .stat-number {
  filter: drop-shadow(0 0 12px rgba(56,189,248,0.4)) !important;
}

/* -------------------------------------------------------
   BLOG CARDS — SHIMMER ON IMAGE HOVER
   ------------------------------------------------------- */
.blog-post {
  overflow: hidden !important;
}

.blog-post .blog-image {
  transition: transform 0.6s cubic-bezier(0.22,1,0.36,1),
              filter 0.6s ease !important;
}

.blog-post:hover .blog-image {
  transform: scale(1.08) !important;
}

/* -------------------------------------------------------
   TOOL ICON — ANIMATED GLOW ON HOVER
   ------------------------------------------------------- */
.tool-icon,
.feature-icon {
  transition: transform 0.3s cubic-bezier(0.22,1,0.36,1),
              box-shadow 0.3s ease !important;
}

.tool-card:hover .tool-icon,
.tool-card:hover .feature-icon {
  transform: scale(1.12) rotate(-5deg) !important;
  box-shadow: 0 6px 24px rgba(37,99,235,0.55) !important;
}

/* -------------------------------------------------------
   PRELOADER — DARK NAVY THEME
   ------------------------------------------------------- */
#preloader {
  background: linear-gradient(135deg, #03060f 0%, #060c1a 50%, #0a1228 100%) !important;
  position: relative;
  overflow: hidden;
}

#preloader::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 60% at 30% 40%, rgba(37,99,235,0.2) 0%, transparent 70%),
    radial-gradient(ellipse 50% 50% at 70% 70%, rgba(56,189,248,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.preloader-logo {
  font-family: 'Space Grotesk', sans-serif !important;
  background: linear-gradient(135deg, #fff, #38bdf8) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  background-clip: text !important;
  filter: drop-shadow(0 0 30px rgba(56,189,248,0.5)) !important;
}

.preloader-ring {
  border-color: rgba(56,189,248,0.2) !important;
  border-top-color: #38bdf8 !important;
  box-shadow: 0 0 20px rgba(56,189,248,0.3) !important;
}

/* -------------------------------------------------------
   CAROUSEL CARDS — DARK GLASSMORPHISM
   ------------------------------------------------------- */
.carousel-cell {
  background: rgba(10,18,40,0.85) !important;
  border: 1px solid rgba(56,116,230,0.20) !important;
  box-shadow:
    0 20px 60px rgba(0,0,0,0.6),
    inset 0 1px 0 rgba(255,255,255,0.06) !important;
  backdrop-filter: blur(16px) !important;
}

.carousel-cell-body h3 {
  color: var(--text-white) !important;
  font-family: 'Space Grotesk', sans-serif !important;
}

.carousel-cell-body p {
  color: var(--text-secondary) !important;
}

.carousel-link {
  background: linear-gradient(135deg, var(--accent-blue), #1d4ed8) !important;
  color: #fff !important;
  position: relative !important;
  overflow: hidden !important;
  box-shadow: 0 4px 16px rgba(37,99,235,0.4) !important;
}

.carousel-btn {
  background: linear-gradient(135deg, var(--accent-blue), #1d4ed8) !important;
  box-shadow: 0 4px 16px rgba(37,99,235,0.4) !important;
  transition: transform 0.2s ease, box-shadow 0.2s ease !important;
}

.carousel-btn:hover {
  transform: scale(1.12) !important;
  box-shadow: 0 6px 24px rgba(37,99,235,0.6) !important;
}

.carousel-dot {
  background: rgba(56,189,248,0.3) !important;
  border: 1px solid rgba(56,189,248,0.2) !important;
  transition: all 0.3s ease !important;
}

.carousel-dot.active {
  background: var(--accent-sky) !important;
  box-shadow: 0 0 10px rgba(56,189,248,0.6) !important;
  transform: scale(1.4) !important;
}

/* -------------------------------------------------------
   ACCESSIBILITY WIDGET — POLISHED
   ------------------------------------------------------- */
#acc-btn {
  background: linear-gradient(135deg, #1d4ed8, var(--accent-blue)) !important;
  box-shadow:
    0 4px 20px rgba(37,99,235,0.55),
    inset 0 1px 0 rgba(255,255,255,0.15) !important;
  letter-spacing: 0.02em !important;
  animation: widgetPulse 4s ease-in-out infinite !important;
}

@keyframes widgetPulse {
  0%, 100% { box-shadow: 0 4px 20px rgba(37,99,235,0.55), inset 0 1px 0 rgba(255,255,255,0.15); }
  50%       { box-shadow: 0 4px 32px rgba(37,99,235,0.80), inset 0 1px 0 rgba(255,255,255,0.15); }
}

#acc-btn:hover {
  animation: none !important;
  box-shadow: 0 8px 32px rgba(37,99,235,0.75) !important;
  transform: translateY(-2px) !important;
}

/* -------------------------------------------------------
   SCORE CIRCLE — ANIMATED RING
   ------------------------------------------------------- */
.score-circle {
  background: rgba(37,99,235,0.08) !important;
  border: 2px solid transparent !important;
  background-clip: padding-box !important;
  box-shadow:
    0 0 40px rgba(37,99,235,0.25),
    inset 0 0 20px rgba(37,99,235,0.1) !important;
  animation: scorePulse 3s ease-in-out infinite !important;
  position: relative !important;
}

@keyframes scorePulse {
  0%, 100% { box-shadow: 0 0 40px rgba(37,99,235,0.25), inset 0 0 20px rgba(37,99,235,0.1); }
  50%       { box-shadow: 0 0 60px rgba(56,189,248,0.35), inset 0 0 30px rgba(37,99,235,0.15); }
}

/* -------------------------------------------------------
   SKELETON LOADER ANIMATION
   ------------------------------------------------------- */
@keyframes skeletonShimmer {
  0%   { background-position: -200px 0; }
  100% { background-position: calc(200px + 100%) 0; }
}

.skeleton {
  background: linear-gradient(90deg,
    rgba(10,18,40,0.8) 25%,
    rgba(37,99,235,0.1) 50%,
    rgba(10,18,40,0.8) 75%
  );
  background-size: 200px 100%;
  animation: skeletonShimmer 1.5s infinite;
  border-radius: 8px;
}

/* -------------------------------------------------------
   FOOTER — IMPROVED
   ------------------------------------------------------- */
footer[role="contentinfo"] {
  background: linear-gradient(to bottom, var(--bg-void), #010408) !important;
  position: relative !important;
  overflow: hidden !important;
}

footer[role="contentinfo"]::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-blue), var(--accent-sky), transparent);
  opacity: 0.6;
}

/* -------------------------------------------------------
   QUOTE SECTION — ENHANCED
   ------------------------------------------------------- */
.quote-mark-start,
.quote-mark-end {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-sky)) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  background-clip: text !important;
  opacity: 0.8 !important;
  filter: drop-shadow(0 0 12px rgba(56,189,248,0.3)) !important;
}

/* -------------------------------------------------------
   MISSION HERO — GRID PATTERN + GLOW ORBS
   ------------------------------------------------------- */
.mission-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(37,99,235,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37,99,235,0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* -------------------------------------------------------
   BACK-TO-SITE SECTION
   ------------------------------------------------------- */
.back-to-site {
  background: linear-gradient(135deg, var(--bg-surface), var(--bg-deep)) !important;
  border-top: 1px solid var(--border-subtle) !important;
  padding: 4rem 2rem !important;
  text-align: center !important;
}

.back-to-site h2 {
  font-family: var(--font-display) !important;
  background: linear-gradient(135deg, var(--text-white), var(--accent-sky)) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  background-clip: text !important;
  font-size: clamp(1.4rem, 3vw, 2rem) !important;
  font-weight: 800 !important;
  margin-bottom: 0.8rem !important;
}

.back-to-site p {
  color: var(--text-secondary) !important;
  margin-bottom: 1.5rem !important;
}

/* -------------------------------------------------------
   INPUT FOCUS ENHANCEMENT
   ------------------------------------------------------- */
input[type="url"]:focus,
input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
  background: rgba(10,18,40,0.95) !important;
  border-color: var(--accent-sky) !important;
  box-shadow:
    0 0 0 3px rgba(56,189,248,0.15),
    0 0 20px rgba(56,189,248,0.1) !important;
}

/* -------------------------------------------------------
   ORBS — IMPROVED FLOAT ANIMATION
   ------------------------------------------------------- */
.orb-1 {
  animation-duration: 14s !important;
  opacity: 0.22 !important;
}

.orb-2 {
  animation-duration: 11s !important;
  opacity: 0.18 !important;
}

.orb-3 {
  opacity: 0.14 !important;
}

/* -------------------------------------------------------
   PAGE TRANSITION (tab switches)
   ------------------------------------------------------- */
.tab-content.active {
  animation: tabFadeIn 0.4s cubic-bezier(0.22,1,0.36,1) both;
}

@keyframes tabFadeIn {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* -------------------------------------------------------
   REDUCED MOTION — RESPECT USER PREFERENCE
   ------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  body::after,
  .tool-card::after,
  .feature-card::after,
  .btn::before,
  .cta-btn.primary,
  a.btn-primary,
  button.btn-primary,
  #acc-btn,
  .score-circle,
  .mission-hero::after {
    animation: none !important;
    transition: none !important;
  }

  .tab-content.active {
    animation: none !important;
  }
}

/* -------------------------------------------------------
   MODERN SCROLLBAR — scoped to html/body to avoid
   applying unnecessary scrollbar-width resets to every
   element on the page.
   ------------------------------------------------------- */
html {
  scrollbar-width: thin;
  scrollbar-color: var(--accent-blue) var(--bg-void);
}

::-webkit-scrollbar {
  width: 6px !important;
  height: 6px !important;
}

::-webkit-scrollbar-track {
  background: var(--bg-void) !important;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--accent-blue), var(--accent-sky)) !important;
  border-radius: 3px !important;
  box-shadow: 0 0 6px rgba(56,189,248,0.4) !important;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, #3b82f6, var(--accent-cyan)) !important;
}

/* -------------------------------------------------------
   FEATURE CARDS — ICON CIRCLE ENHANCEMENT
   ------------------------------------------------------- */
.feature-icon {
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple)) !important;
  box-shadow: 0 4px 20px rgba(129,140,248,0.35) !important;
  transition: transform 0.35s cubic-bezier(0.22,1,0.36,1),
              box-shadow 0.35s ease !important;
}

.feature-card:hover .feature-icon {
  transform: scale(1.15) rotate(5deg) !important;
  box-shadow: 0 8px 32px rgba(129,140,248,0.55) !important;
}

/* -------------------------------------------------------
   HERO SCROLL INDICATOR — VISIBLE ONLY ON HOME
   ------------------------------------------------------- */
.hero-scroll-indicator {
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.hero-scroll-indicator:hover {
  opacity: 1;
}

/* -------------------------------------------------------
   TOOL CARD — FEATURE TAGS IMPROVED
   ------------------------------------------------------- */
.feature-tag {
  transition: all 0.2s ease !important;
}

.tool-card:hover .feature-tag,
.feature-card:hover .feature-tag {
  background: rgba(37,99,235,0.22) !important;
  border-color: rgba(56,189,248,0.4) !important;
  color: #fff !important;
}

/* -------------------------------------------------------
   MOBILE — TOUCH FEEDBACK
   ------------------------------------------------------- */
@media (max-width: 768px) {
  .tool-card:active,
  .feature-card:active,
  .blog-post:active {
    transform: scale(0.98) !important;
  }
}