* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: Poppins, sans-serif;
}

body {
  background: #000;
  color: #fff;
  overflow-x: hidden;
}

/* ================= HERO ================= */
.hero {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.heroVideo,
.heroImg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 1.2s ease;
}

.heroVideo { 
  opacity: 1;
  z-index: 1;
}

.heroImg { 
  opacity: 0;
  z-index: 0;
}

.heroImg.show { 
  opacity: 1;
  z-index: 2;
}

.heroVideo.hide { 
  opacity: 0;
  z-index: 0;
}

.heroOverlay {
  position: relative;
  z-index: 3;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 20px;
}

h1 {
  color: #F6C84C;
  font-size: 46px;
  margin-bottom: 10px;
}

.tagline {
  opacity: .9;
  margin-bottom: 22px;
  font-size: 18px;
}

.features {
  display: flex;
  gap: 14px;
  margin-bottom: 30px;
  flex-wrap: wrap;
  justify-content: center;
}

.features div {
  background: rgba(0,0,0,.55);
  padding: 8px 12px;
  border-radius: 20px;
  font-size: 14px;
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255,255,255,0.1);
}

.subtext {
  margin-top: 16px;
  font-size: 13px;
  opacity: .8;
}

/* ================= AI CTA BUTTON ================= */
.aiBtn {
  position: relative;
  padding: 16px 32px;
  border-radius: 34px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  background: #F6C84C;
  color: #000;
  border: none;
  overflow: visible;
  animation: blinkFill 5s ease-in-out infinite;
  margin: 5px 0;
  min-width: 220px;
  transition: transform 0.2s ease;
}

.aiBtn:hover {
  transform: scale(1.02);
}

.aiBtn:active {
  transform: scale(0.98);
}

.aiBtn span {
  position: relative;
  z-index: 3;
}

.aiBtn::before {
  content: "";
  position: absolute;
  top: -1.5px;
  left: -1.5px;
  right: -1.5px;
  bottom: -1.5px;
  border-radius: 38px;
  background: linear-gradient(
    120deg,
    #ff0000,
    #ff7f00,
    #ffff00,
    #00ff00,
    #00ffff,
    #0000ff,
    #8b00ff
  );
  background-size: 300% 300%;
  animation: aiBorderMove 8s linear infinite;
  filter: drop-shadow(0 2px 6px rgba(255, 80, 80, 0.25))
          drop-shadow(0 6px 14px rgba(0, 200, 255, 0.22))
          drop-shadow(0 12px 28px rgba(138, 43, 226, 0.30));
  z-index: -1;
}

@keyframes blinkFill {
  0%, 45% {
    background: #000;
    color: #F6C84C;
  }
  55% {
    background: #F6C84C;
    color: #000;
  }
  100% {
    background: #000;
    color: #F6C84C;
  }
}

@keyframes aiBorderMove {
  0%   { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

/* ================= INSTALL BUTTON ================= */
.install-btn {
  margin-top: 15px;
  animation: none; /* Remove pulse if any */
  background: #F6C84C;
}

.install-btn span {
  color: #000;
}

/* ================= INSTRUCTION TEXT ================= */
.instruction-text {
  margin-top: 20px;
  padding: 12px 20px;
  background: rgba(246, 200, 76, 0.1);
  border: 1px solid rgba(246, 200, 76, 0.3);
  border-radius: 12px;
  color: #F6C84C;
  font-size: 14px;
  max-width: 280px;
  backdrop-filter: blur(5px);
  animation: fadeIn 0.5s ease;
}

.instruction-text p {
  font-weight: 600;
  margin-bottom: 4px;
}

.instruction-text small {
  color: rgba(255,255,255,0.7);
  font-size: 12px;
  display: block;
  line-height: 1.5;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ================= TESTIMONIALS SECTION ================= */
.testimonialsSection {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
}

.testVideo {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.35);
}

.testOverlay {
  position: relative;
  z-index: 2;
  padding: 80px 20px;
  text-align: center;
}

.testimonialsSection::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.55);
  z-index: 1;
}

.testOverlay h2 {
  color: #F6C84C;
  font-size: 32px;
  margin-bottom: 10px;
}

.testSub {
  opacity: .8;
  margin: 10px 0 30px;
  font-size: 16px;
}

.testimonialSlider {
  position: relative;
  max-width: 420px;
  margin: 0 auto;
  min-height: 280px;
  perspective: 1200px;
}

.testimonialCard {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0.08);
  padding: 24px;
  border-radius: 18px;
  text-align: left;
  opacity: 0;
  transform: translateX(120%) rotate(6deg) scale(0.9);
  transition: transform 1.9s cubic-bezier(.12,1.2,.56,1), opacity 5.6s ease;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.05);
}

.testimonialCard.active {
  opacity: 1;
  transform: translateX(0) rotate(0deg) scale(1);
  z-index: 2;
}

.testimonialCard.exit {
  opacity: 0;
  transform: translateX(-120%) rotate(-8deg) scale(0.85);
  z-index: 1;
}

.testimonialCard:hover {
  animation: highlightPulse 1.6s ease-in-out infinite;
  box-shadow: 0 0 0 0 rgba(246, 200, 76, 0.4);
}

@keyframes highlightPulse {
  0% { box-shadow: 0 0 0 0 rgba(246, 200, 76, 0.4); }
  70% { box-shadow: 0 0 0 14px rgba(246, 200, 76, 0); }
  100% { box-shadow: 0 0 0 0 rgba(246, 200, 76, 0); }
}

.top {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
  align-items: center;
}

.avatar {
  background: #F6C84C;
  color: #000;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 18px;
  box-shadow: 0 4px 10px rgba(246, 200, 76, 0.3);
}

.top div {
  flex: 1;
}

.top strong {
  color: #fff;
  font-size: 16px;
}

.top div br + span {
  color: #F6C84C;
  font-size: 13px;
  opacity: 0.9;
}

.stars {
  color: #F6C84C;
  margin-bottom: 12px;
  font-size: 18px;
  letter-spacing: 2px;
}

.testimonialCard p {
  color: rgba(255,255,255,0.9);
  font-size: 15px;
  line-height: 1.6;
  font-style: italic;
}

/* ================= MOBILE RESPONSIVE ================= */
@media (max-width: 768px) {
  h1 {
    font-size: 36px;
  }

  .tagline {
    font-size: 16px;
  }

  .features {
    flex-direction: column;
    align-items: center;
    width: 100%;
    max-width: 280px;
  }

  .features div {
    width: 100%;
    text-align: center;
  }

  .testimonialSlider {
    min-height: 300px;
    max-width: 320px;
  }
  
  .aiBtn {
    padding: 14px 26px;
    font-size: 15px;
    min-width: 200px;
  }

  .testOverlay {
    padding: 60px 15px;
  }

  .testOverlay h2 {
    font-size: 28px;
  }

  .testimonialCard {
    padding: 20px;
  }

  .avatar {
    width: 44px;
    height: 44px;
    font-size: 16px;
  }
}

/* ================= TABLET RESPONSIVE ================= */
@media (min-width: 769px) and (max-width: 1024px) {
  h1 {
    font-size: 42px;
  }

  .features {
    gap: 10px;
  }

  .testimonialSlider {
    max-width: 380px;
  }
}

/* ================= DESKTOP SPECIFIC ================= */
@media (min-width: 1025px) {
  .instruction-text {
    display: none !important; /* Never show instructions on desktop */
  }

  .heroOverlay {
    max-width: 800px;
    margin: 0 auto;
  }

  .features {
    justify-content: center;
  }
}

/* ================= SMALL MOBILE DEVICES ================= */
@media (max-width: 380px) {
  h1 {
    font-size: 32px;
  }

  .aiBtn {
    padding: 12px 20px;
    font-size: 14px;
    min-width: 180px;
  }

  .testimonialSlider {
    min-height: 320px;
  }

  .instruction-text {
    padding: 10px 15px;
    font-size: 13px;
  }
}

/* ================= LANDSCAPE MODE ================= */
@media (max-height: 600px) and (orientation: landscape) {
  .heroOverlay {
    padding: 10px;
  }

  .features {
    margin-bottom: 15px;
  }

  .features div {
    padding: 5px 10px;
    font-size: 12px;
  }

  h1 {
    font-size: 32px;
    margin-bottom: 5px;
  }

  .tagline {
    margin-bottom: 10px;
  }

  .aiBtn {
    padding: 10px 20px;
    margin: 5px 0;
  }
}

/* ================= HIGH RESOLUTION DISPLAYS ================= */
@media (min-width: 1440px) {
  h1 {
    font-size: 56px;
  }

  .tagline {
    font-size: 20px;
  }

  .features div {
    font-size: 16px;
    padding: 10px 16px;
  }

  .testimonialSlider {
    max-width: 500px;
    min-height: 300px;
  }
}

/* ================= PRINT STYLES ================= */
@media print {
  .heroVideo,
  .testVideo,
  .aiBtn::before,
  .install-btn {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  h1 {
    color: black;
  }
}

/* ================= LOADING STATE ================= */
.testimonialCard:first-child:only-child {
  position: relative;
  opacity: 1;
  transform: none;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

.testimonialCard:first-child:only-child p {
  color: #F6C84C;
  font-style: normal;
}

/* ================= TOUCH DEVICE OPTIMIZATIONS ================= */
@media (hover: none) {
  .aiBtn:hover {
    transform: none;
  }

  .testimonialCard:hover {
    animation: none;
  }
}

/* ================= SAFARI SPECIFIC FIXES ================= */
@supports (-webkit-touch-callout: none) {
  .heroVideo,
  .testVideo {
    /* Fix for Safari video playback issues */
    -webkit-transform: translateZ(0);
    transform: translateZ(0);
  }

  .heroOverlay {
    /* Fix for Safari backdrop-filter */
    -webkit-backdrop-filter: blur(0);
  }
}