/* ==========================================================================
   BinaTerra Homepage — Digital Frontier Theme
   ========================================================================== */

/* ---------- CSS Custom Properties ---------- */
:root {
  --bt-dark-1: #0a0a1a;
  --bt-dark-2: #11112b;
  --bt-dark-3: #1a1a3e;
  --bt-cyan: #00f0ff;
  --bt-purple: #8b5cf6;
  --bt-pink: #ec4899;
  --bt-green: #10b981;
  --bt-orange: #f59e0b;
  --bt-gradient: linear-gradient(135deg, var(--bt-cyan), var(--bt-purple));
  --bt-gradient-pink: linear-gradient(135deg, var(--bt-purple), var(--bt-pink));
  --bt-gradient-green: linear-gradient(135deg, var(--bt-green), var(--bt-cyan));
  --bt-gradient-orange: linear-gradient(135deg, var(--bt-orange), #ef4444);
  --bt-text-1: #e2e8f0;
  --bt-text-2: #94a3b8;
  --bt-text-3: #64748b;
  --bt-glass: rgba(255, 255, 255, 0.04);
  --bt-glass-border: rgba(255, 255, 255, 0.08);
  --bt-glass-hover: rgba(255, 255, 255, 0.08);
  --bt-radius: 16px;
  --bt-radius-sm: 8px;
  --bt-radius-full: 9999px;
  --bt-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --bt-font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

/* ---------- Global Overrides for Dark Theme ---------- */
.bt-homepage,
.bt-homepage *,
.bt-homepage *::before,
.bt-homepage *::after {
  box-sizing: border-box;
}

body:has(.bt-homepage) {
  background: var(--bt-dark-1) !important;
  color: var(--bt-text-1);
  font-family: var(--bt-font);
  overflow-x: hidden;
}

body:has(.bt-homepage) .site-header {
  position: fixed !important;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent !important;
  transition: background 0.4s ease, backdrop-filter 0.4s ease, box-shadow 0.4s ease;
  border-bottom: none !important;
  box-shadow: none !important;
}

body:has(.bt-homepage) .site-header.bt-header-scrolled {
  background: rgba(10, 10, 26, 0.85) !important;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  box-shadow: 0 1px 0 var(--bt-glass-border) !important;
}

body:has(.bt-homepage) .ast-primary-header-bar,
body:has(.bt-homepage) .ast-main-header-wrap,
body:has(.bt-homepage) .main-header-bar {
  background: transparent !important;
  border-bottom: none !important;
}

body:has(.bt-homepage) .site-title a,
body:has(.bt-homepage) .main-header-menu .menu-link {
  color: var(--bt-text-1) !important;
  font-family: var(--bt-font) !important;
  font-weight: 500 !important;
  transition: color var(--bt-transition) !important;
}

body:has(.bt-homepage) .main-header-menu .menu-link:hover {
  color: var(--bt-cyan) !important;
}

body:has(.bt-homepage) #content {
  padding: 0 !important;
  margin: 0 !important;
}

body:has(.bt-homepage) .ast-container {
  max-width: 100% !important;
  padding: 0 !important;
}

body:has(.bt-homepage) .entry-content {
  margin: 0 !important;
  padding: 0 !important;
}

body:has(.bt-homepage) #wpadminbar {
  opacity: 0.3;
  transition: opacity 0.3s;
}
body:has(.bt-homepage) #wpadminbar:hover {
  opacity: 1;
}

/* Footer dark override */
body:has(.bt-homepage) .site-footer {
  background: var(--bt-dark-1) !important;
  color: var(--bt-text-2) !important;
  border-top: 1px solid var(--bt-glass-border) !important;
}
body:has(.bt-homepage) .site-footer a,
body:has(.bt-homepage) .ast-footer-copyright p {
  color: var(--bt-text-3) !important;
}

/* ---------- Container ---------- */
.bt-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  width: 100%;
}

/* ---------- Section Base ---------- */
.bt-section {
  padding: 120px 0;
  position: relative;
}

.bt-section:nth-child(even) {
  background: var(--bt-dark-2);
}

.bt-section:nth-child(odd) {
  background: var(--bt-dark-1);
}

.bt-section__header {
  text-align: center;
  margin-bottom: 72px;
}

.bt-section__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--bt-cyan);
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.2);
  padding: 6px 16px;
  border-radius: var(--bt-radius-full);
  margin-bottom: 20px;
}

.bt-section__title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  color: var(--bt-text-1);
  margin: 0;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.bt-section__subtitle {
  font-size: 1rem;
  color: var(--bt-text-2);
  margin-top: 12px;
}

.bt-gradient-text {
  background: var(--bt-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---------- Buttons ---------- */
.bt-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--bt-radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--bt-font);
  text-decoration: none !important;
  cursor: pointer;
  transition: all var(--bt-transition);
  border: none;
  position: relative;
  overflow: hidden;
}

.bt-btn--primary {
  background: var(--bt-gradient);
  color: #fff !important;
  box-shadow: 0 4px 24px rgba(0, 240, 255, 0.25);
}

.bt-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 240, 255, 0.4);
  color: #fff !important;
}

.bt-btn--outline {
  background: transparent;
  color: var(--bt-text-1) !important;
  border: 1px solid var(--bt-glass-border);
  backdrop-filter: blur(8px);
}

.bt-btn--outline:hover {
  border-color: var(--bt-cyan);
  color: var(--bt-cyan) !important;
  background: rgba(0, 240, 255, 0.05);
  transform: translateY(-2px);
}

.bt-btn--glow {
  background: var(--bt-gradient);
  color: #fff !important;
  box-shadow: 0 0 40px rgba(0, 240, 255, 0.3), 0 0 80px rgba(139, 92, 246, 0.15);
  font-size: 1.1rem;
  padding: 18px 40px;
  animation: btn-pulse 3s ease-in-out infinite;
}

.bt-btn--glow:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 0 60px rgba(0, 240, 255, 0.5), 0 0 120px rgba(139, 92, 246, 0.25);
  color: #fff !important;
}

@keyframes btn-pulse {
  0%, 100% { box-shadow: 0 0 40px rgba(0, 240, 255, 0.3), 0 0 80px rgba(139, 92, 246, 0.15); }
  50% { box-shadow: 0 0 60px rgba(0, 240, 255, 0.45), 0 0 100px rgba(139, 92, 246, 0.25); }
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.bt-hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--bt-dark-1);
}

.bt-hero__canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.bt-hero__overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(0, 240, 255, 0.06) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 50%, rgba(139, 92, 246, 0.06) 0%, transparent 60%),
              linear-gradient(180deg, transparent 0%, var(--bt-dark-1) 100%);
  z-index: 1;
  pointer-events: none;
}

.bt-hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
}

.bt-hero__title {
  font-size: clamp(3rem, 10vw, 8rem);
  font-weight: 900;
  letter-spacing: 0.05em;
  margin: 0;
  position: relative;
  line-height: 1;
  color: transparent;
}

.bt-hero__title-glitch {
  background: var(--bt-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  display: inline-block;
  animation: hero-glow 4s ease-in-out infinite alternate;
}

@keyframes hero-glow {
  0% { filter: drop-shadow(0 0 20px rgba(0, 240, 255, 0.3)); }
  50% { filter: drop-shadow(0 0 40px rgba(139, 92, 246, 0.4)); }
  100% { filter: drop-shadow(0 0 20px rgba(0, 240, 255, 0.3)); }
}

/* Glitch effect on hover */
.bt-hero__title:hover .bt-hero__title-glitch {
  animation: glitch 0.4s ease-in-out;
}

@keyframes glitch {
  0% { transform: translate(0); }
  20% { transform: translate(-3px, 3px); }
  40% { transform: translate(3px, -3px); }
  60% { transform: translate(-2px, -2px); }
  80% { transform: translate(2px, 2px); }
  100% { transform: translate(0); }
}

.bt-hero__subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.6rem);
  color: var(--bt-text-2);
  margin: 24px 0 0;
  font-weight: 300;
  letter-spacing: 0.05em;
  min-height: 2em;
}

.bt-typewriter {
  border-right: 2px solid var(--bt-cyan);
  animation: blink-caret 0.8s step-end infinite;
}

@keyframes blink-caret {
  0%, 100% { border-color: var(--bt-cyan); }
  50% { border-color: transparent; }
}

.bt-hero__description {
  font-size: clamp(0.85rem, 1.5vw, 1rem);
  color: var(--bt-text-3);
  margin: 16px 0 0;
  letter-spacing: 0.1em;
}

.bt-hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 48px;
  padding: 14px 36px;
  border: 1px solid var(--bt-glass-border);
  border-radius: var(--bt-radius-full);
  color: var(--bt-text-1) !important;
  text-decoration: none !important;
  font-size: 0.9rem;
  font-weight: 500;
  font-family: var(--bt-font);
  backdrop-filter: blur(8px);
  transition: all var(--bt-transition);
}

.bt-hero__cta:hover {
  border-color: var(--bt-cyan);
  color: var(--bt-cyan) !important;
  background: rgba(0, 240, 255, 0.05);
  transform: translateY(-2px);
}

/* Scroll indicator */
.bt-hero__scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--bt-text-3);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  animation: scroll-bounce 2s ease-in-out infinite;
}

.bt-hero__mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--bt-text-3);
  border-radius: 12px;
  position: relative;
}

.bt-hero__mouse-wheel {
  width: 3px;
  height: 8px;
  background: var(--bt-cyan);
  border-radius: 2px;
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  animation: wheel-scroll 2s ease-in-out infinite;
}

@keyframes scroll-bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

@keyframes wheel-scroll {
  0% { opacity: 1; top: 8px; }
  100% { opacity: 0; top: 22px; }
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */
.bt-about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.bt-about__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.bt-about__orb {
  position: relative;
  width: 300px;
  height: 300px;
}

.bt-about__orb-core {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  background: var(--bt-gradient);
  border-radius: 50%;
  filter: blur(1px);
  box-shadow: 0 0 60px rgba(0, 240, 255, 0.4), 0 0 120px rgba(139, 92, 246, 0.2);
}

.bt-about__orb-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  border: 1px solid;
  border-radius: 50%;
}

.bt-about__orb-ring--1 {
  width: 160px;
  height: 160px;
  margin: -80px 0 0 -80px;
  border-color: rgba(0, 240, 255, 0.2);
  animation: orb-spin 8s linear infinite;
}

.bt-about__orb-ring--2 {
  width: 220px;
  height: 220px;
  margin: -110px 0 0 -110px;
  border-color: rgba(139, 92, 246, 0.15);
  animation: orb-spin 12s linear infinite reverse;
}

.bt-about__orb-ring--3 {
  width: 280px;
  height: 280px;
  margin: -140px 0 0 -140px;
  border-color: rgba(0, 240, 255, 0.08);
  animation: orb-spin 16s linear infinite;
}

.bt-about__orb-ring::before {
  content: '';
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  top: -4px;
  left: 50%;
  transform: translateX(-50%);
}

.bt-about__orb-ring--1::before {
  background: var(--bt-cyan);
  box-shadow: 0 0 12px var(--bt-cyan);
}

.bt-about__orb-ring--2::before {
  background: var(--bt-purple);
  box-shadow: 0 0 12px var(--bt-purple);
}

.bt-about__orb-ring--3::before {
  background: var(--bt-cyan);
  box-shadow: 0 0 12px var(--bt-cyan);
  opacity: 0.5;
}

@keyframes orb-spin {
  from { transform: translate(-50%, -50%) rotate(0deg); }
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

.bt-about__text {
  color: var(--bt-text-2);
  line-height: 1.8;
}

.bt-about__lead {
  font-size: 1.15rem;
  color: var(--bt-text-1);
  margin-bottom: 20px;
}

.bt-about__lead strong {
  background: var(--bt-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bt-about__text p {
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.bt-about__text .bt-btn {
  margin-top: 24px;
}

/* ==========================================================================
   ACTIVITY CARDS
   ========================================================================== */
.bt-activity__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.bt-card {
  position: relative;
  background: var(--bt-glass);
  border: 1px solid var(--bt-glass-border);
  border-radius: var(--bt-radius);
  padding: 36px 28px 28px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  cursor: default;
}

.bt-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.03) 0%, transparent 100%);
  pointer-events: none;
}

.bt-card:hover {
  transform: translateY(-8px);
  border-color: rgba(255, 255, 255, 0.15);
  background: var(--bt-glass-hover);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.bt-card__glow {
  position: absolute;
  top: -60px;
  right: -60px;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  opacity: 0;
  transition: opacity 0.5s ease;
  filter: blur(60px);
  pointer-events: none;
}

.bt-card:hover .bt-card__glow {
  opacity: 1;
}

.bt-card__glow--cyan { background: rgba(0, 240, 255, 0.15); }
.bt-card__glow--purple { background: rgba(139, 92, 246, 0.15); }
.bt-card__glow--green { background: rgba(16, 185, 129, 0.15); }
.bt-card__glow--orange { background: rgba(245, 158, 11, 0.15); }

.bt-card__icon {
  width: 56px;
  height: 56px;
  margin-bottom: 24px;
}

.bt-card__icon svg {
  width: 100%;
  height: 100%;
}

.bt-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--bt-text-1);
  margin: 0 0 12px;
}

.bt-card__desc {
  font-size: 0.85rem;
  color: var(--bt-text-2);
  line-height: 1.7;
  margin: 0 0 20px;
}

.bt-card__footer {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.bt-card__tag {
  font-size: 0.7rem;
  padding: 4px 10px;
  border-radius: var(--bt-radius-full);
  background: rgba(255, 255, 255, 0.05);
  color: var(--bt-text-3);
  border: 1px solid rgba(255, 255, 255, 0.06);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* ==========================================================================
   APPS SECTION
   ========================================================================== */
.bt-apps {
  background: var(--bt-dark-2);
}

.bt-apps__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
  max-width: 800px;
  margin: 0 auto;
}

.bt-app-card {
  position: relative;
  background: var(--bt-glass);
  border: 1px solid var(--bt-glass-border);
  border-radius: var(--bt-radius);
  padding: 40px 32px 32px;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.bt-app-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 240, 255, 0.2);
  background: var(--bt-glass-hover);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 240, 255, 0.05);
}

.bt-app-card__badge {
  position: absolute;
  top: 16px;
  right: 16px;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: var(--bt-radius-full);
  background: rgba(0, 240, 255, 0.1);
  color: var(--bt-cyan);
  border: 1px solid rgba(0, 240, 255, 0.2);
}

.bt-app-card__badge--soon {
  background: rgba(100, 116, 139, 0.1);
  color: var(--bt-text-3);
  border-color: rgba(100, 116, 139, 0.2);
}

.bt-app-card__icon-wrap {
  margin-bottom: 24px;
}

.bt-app-card__icon {
  width: 56px;
  height: 56px;
  padding: 10px;
  background: var(--bt-glass);
  border: 1px solid var(--bt-glass-border);
  border-radius: 12px;
}

.bt-app-card__icon svg {
  width: 100%;
  height: 100%;
}

.bt-app-card__title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--bt-text-1);
  margin: 0 0 12px;
}

.bt-app-card__desc {
  font-size: 0.85rem;
  color: var(--bt-text-2);
  line-height: 1.7;
  margin: 0 0 20px;
  flex-grow: 1;
}

.bt-app-card__tech {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.bt-app-card__tech span {
  font-size: 0.7rem;
  padding: 3px 10px;
  border-radius: var(--bt-radius-full);
  background: rgba(139, 92, 246, 0.08);
  color: var(--bt-purple);
  border: 1px solid rgba(139, 92, 246, 0.15);
  font-weight: 500;
}

.bt-app-card__link {
  font-size: 0.85rem;
  color: var(--bt-cyan) !important;
  text-decoration: none !important;
  font-weight: 600;
  transition: all var(--bt-transition);
  display: inline-block;
}

.bt-app-card__link:hover {
  color: #fff !important;
  transform: translateX(4px);
}

.bt-app-card--coming {
  opacity: 0.6;
  border-style: dashed;
}

.bt-app-card--coming:hover {
  opacity: 0.85;
}

/* ==========================================================================
   NEWS SECTION
   ========================================================================== */
.bt-news__timeline {
  max-width: 800px;
  margin: 0 auto;
}

.bt-news__item {
  display: grid;
  grid-template-columns: 80px 40px 1fr;
  gap: 0;
  margin-bottom: 0;
  position: relative;
}

.bt-news__item:last-child .bt-news__line {
  display: none;
}

.bt-news__date {
  text-align: right;
  padding: 16px 0;
}

.bt-news__day {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--bt-text-1);
  line-height: 1;
}

.bt-news__month {
  display: block;
  font-size: 0.7rem;
  color: var(--bt-text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 4px;
}

.bt-news__connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 20px;
}

.bt-news__dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--bt-gradient);
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
  flex-shrink: 0;
}

.bt-news__line {
  width: 2px;
  flex-grow: 1;
  background: linear-gradient(180deg, rgba(0, 240, 255, 0.3), rgba(0, 240, 255, 0.05));
  margin-top: 4px;
}

.bt-news__content {
  padding: 12px 0 40px 16px;
}

.bt-news__title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 8px;
}

.bt-news__title a {
  color: var(--bt-text-1) !important;
  text-decoration: none !important;
  transition: color var(--bt-transition);
}

.bt-news__title a:hover {
  color: var(--bt-cyan) !important;
}

.bt-news__excerpt {
  font-size: 0.85rem;
  color: var(--bt-text-3);
  line-height: 1.6;
  margin: 0;
}

.bt-news__more {
  text-align: center;
  margin-top: 48px;
}

.bt-news__empty {
  text-align: center;
  color: var(--bt-text-3);
}

/* ==========================================================================
   CTA SECTION
   ========================================================================== */
.bt-cta {
  position: relative;
  text-align: center;
  overflow: hidden;
  background: var(--bt-dark-2) !important;
}

.bt-cta__bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.bt-cta__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
}

.bt-cta__orb--1 {
  width: 400px;
  height: 400px;
  background: rgba(0, 240, 255, 0.08);
  top: -100px;
  left: -100px;
  animation: orb-float 10s ease-in-out infinite alternate;
}

.bt-cta__orb--2 {
  width: 350px;
  height: 350px;
  background: rgba(139, 92, 246, 0.08);
  bottom: -100px;
  right: -100px;
  animation: orb-float 12s ease-in-out infinite alternate-reverse;
}

@keyframes orb-float {
  0% { transform: translate(0, 0); }
  100% { transform: translate(40px, -40px); }
}

.bt-cta__content {
  position: relative;
  z-index: 1;
}

.bt-cta__title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--bt-text-1);
  margin: 0 0 20px;
  line-height: 1.3;
}

.bt-cta__desc {
  font-size: 1rem;
  color: var(--bt-text-2);
  line-height: 1.8;
  margin: 0 0 40px;
}

/* ==========================================================================
   SCROLL ANIMATIONS
   ========================================================================== */
.bt-animate {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.bt-animate[data-animation="fade-right"] {
  transform: translateX(-40px);
}

.bt-animate[data-animation="fade-left"] {
  transform: translateX(40px);
}

.bt-animate.bt-visible {
  opacity: 1;
  transform: translate(0);
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

/* Tablet */
@media (max-width: 1024px) {
  .bt-activity__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .bt-apps__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .bt-about__grid {
    gap: 40px;
  }
}

/* Mobile */
@media (max-width: 768px) {
  .bt-section {
    padding: 80px 0;
  }

  .bt-section__header {
    margin-bottom: 48px;
  }

  .bt-about__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .bt-about__visual {
    order: -1;
  }

  .bt-about__orb {
    width: 200px;
    height: 200px;
  }

  .bt-about__orb-core {
    width: 50px;
    height: 50px;
  }

  .bt-about__orb-ring--1 { width: 100px; height: 100px; margin: -50px 0 0 -50px; }
  .bt-about__orb-ring--2 { width: 140px; height: 140px; margin: -70px 0 0 -70px; }
  .bt-about__orb-ring--3 { width: 180px; height: 180px; margin: -90px 0 0 -90px; }

  .bt-activity__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .bt-apps__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .bt-hero__scroll-indicator {
    bottom: 24px;
  }

  .bt-news__item {
    grid-template-columns: 60px 32px 1fr;
  }

  .bt-news__day {
    font-size: 1.4rem;
  }

  .bt-hero__cta {
    margin-top: 32px;
    padding: 12px 28px;
    font-size: 0.85rem;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .bt-section {
    padding: 60px 0;
  }

  .bt-container {
    padding: 0 16px;
  }

  .bt-card {
    padding: 28px 20px 20px;
  }

  .bt-app-card {
    padding: 32px 24px 24px;
  }

  .bt-btn--glow {
    padding: 14px 28px;
    font-size: 0.95rem;
  }
}