:root {
  --font-sans: 'Poppins', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --text: #0f172a;
  --muted: #475467;
  --bg: #f5f7ff;
  --shadow-lg: 0 28px 60px rgba(15, 23, 42, 0.16);
  --shadow-md: 0 16px 40px rgba(15, 23, 42, 0.12);
  --radius-large: 32px;
  --radius-medium: 24px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  background: linear-gradient(160deg, rgba(104, 235, 150, 0.22), rgba(255, 220, 108, 0.22), rgba(255, 148, 148, 0.22), rgba(132, 200, 255, 0.22));
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  line-height: 1.6;
}

img {
  max-width: 100%;
  display: block;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 24px 128px;
  text-align: center;
  color: #1b2d47;
  z-index: 0;
}

.hero::before,
.hero::after {
  content: '';
  position: absolute;
  border-radius: 999px;
  opacity: 0.75;
  filter: blur(0);
}

.hero::before {
  width: 720px;
  height: 720px;
  background: radial-gradient(circle at 30% 30%, #7cf18c, rgba(124, 241, 140, 0) 70%), radial-gradient(circle at 70% 70%, #72c9ff, rgba(114, 201, 255, 0) 65%);
  top: -280px;
  left: 50%;
  transform: translateX(-50%);
  animation: hero-breath 12s ease-in-out infinite;
}

.hero::after {
  width: 520px;
  height: 520px;
  background: radial-gradient(circle at 20% 80%, #ffc85c, rgba(255, 200, 92, 0) 70%), radial-gradient(circle at 80% 20%, #ff7a93, rgba(255, 122, 147, 0) 65%);
  bottom: -220px;
  left: 50%;
  transform: translateX(-50%);
  animation: hero-breath 16s ease-in-out reverse infinite;
}

.hero__content {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  z-index: 1;
}

.hero img {
  width: 120px;
  height: 120px;
  margin: 0 auto 20px;
  border-radius: 28px;
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.25);
}

.hero h1 {
  margin: 0;
  font-size: clamp(2.5rem, 7vw, 3.4rem);
  letter-spacing: -0.02em;
  color: #0f2f4f;
}

.subtitle {
  margin: 16px auto 28px;
  max-width: 540px;
  font-size: 1.1rem;
  color: rgba(16, 48, 78, 0.78);
}

.hero__tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.hero__tags span {
  padding: 10px 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
  font-weight: 500;
  backdrop-filter: blur(6px);
  color: #1b2d47;
}

main {
  max-width: 1140px;
  margin: -88px auto 0;
  position: relative;
  z-index: 1;
  padding: 0 24px 120px;
}

section {
  background: #ffffff;
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-lg);
  padding: 56px clamp(24px, 4vw, 64px);
}

.phrase-section {
  margin-bottom: 56px;
}

.phrase-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: clamp(24px, 5vw, 48px);
  align-items: center;
}

.phone-preview {
  background: transparent;
  border-radius: 36px;
  padding: 24px;
  box-shadow: none;
  position: relative;
}

.phone-notch {
  position: absolute;
  top: 24px;
  left: 50%;
  width: 120px;
  height: 16px;
  background: rgba(0, 0, 0, 0.15);
  border-radius: 999px;
  transform: translateX(-50%);
}

.phone-screen {
  --gradient-start: #66f077;
  --gradient-end: #2ac86b;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  border-radius: 28px;
  padding: 32px clamp(20px, 4vw, 34px);
  min-height: 420px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #ffffff;
  text-align: center;
  gap: 32px;
  transition: background 0.6s ease;
  position: relative;
  overflow: hidden;
}

.phone-screen::after {
  content: '';
  position: absolute;
  inset: 40px;
  background: radial-gradient(circle at top, rgba(255, 255, 255, 0.18), transparent 65%);
  opacity: 0.7;
  pointer-events: none;
}

.phone-screen.is-transitioning {
  animation: phrase-pop 0.6s ease;
}

.mood-label {
  align-self: center;
  padding: 10px 20px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.28);
  font-weight: 600;
  letter-spacing: 0.02em;
  backdrop-filter: blur(6px);
  z-index: 1;
}

.phrase-text {
  margin: 0;
  font-size: clamp(1.4rem, 4vw, 1.9rem);
  font-weight: 600;
  line-height: 1.5;
  z-index: 1;
}

.phrase-actions {
  display: flex;
  flex-direction: column;
  gap: 16px;
  z-index: 1;
}

.phrase-actions button {
  appearance: none;
  border: none;
  border-radius: 999px;
  padding: 14px 26px;
  background: rgba(255, 255, 255, 0.92);
  color: #23394f;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.15);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.phrase-actions button:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 28px rgba(15, 23, 42, 0.18);
}

.phrase-actions button:active {
  transform: translateY(0);
}

.phrase-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.dot--active {
  opacity: 1;
  transform: scale(1.4);
  background: #ffffff;
}

.phrase-copy h2 {
  margin-top: 0;
  font-size: clamp(2rem, 5vw, 2.5rem);
  letter-spacing: -0.01em;
}

.phrase-copy p {
  margin-bottom: 24px;
  color: var(--muted);
}

.phrase-benefits {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 16px;
}

.phrase-benefits li {
  padding-left: 34px;
  position: relative;
  font-weight: 500;
}

.phrase-benefits li::before {
  content: '✺';
  position: absolute;
  left: 0;
  top: 2px;
  font-size: 1.1rem;
  color: #ffb75d;
}

.features {
  margin-bottom: 56px;
  text-align: center;
}

.features h2 {
  margin-top: 0;
  margin-bottom: 32px;
  font-size: clamp(2rem, 5vw, 2.5rem);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.feature-card {
  color: #ffffff;
  border-radius: var(--radius-medium);
  padding: 32px 26px;
  text-align: left;
  box-shadow: var(--shadow-md);
}

.feature-card h3 {
  margin: 0 0 12px;
  font-size: 1.4rem;
}

.feature-card p {
  margin: 0;
  font-size: 0.98rem;
  line-height: 1.6;
}

.feature-card--green {
  background: linear-gradient(135deg, #66f097, #2ecb6c);
}

.feature-card--yellow {
  background: linear-gradient(135deg, #ffd85b, #ffb347);
  color: #4a3200;
}

.feature-card--coral {
  background: linear-gradient(135deg, #ff9e9d, #ff5a6a);
}

.feature-card--blue {
  background: linear-gradient(135deg, #79e0ff, #56b5f5);
}

.cta {
  margin-bottom: 56px;
  text-align: center;
}

.cta h2 {
  margin: 0 0 16px;
  font-size: clamp(2rem, 5vw, 2.6rem);
}

.cta p {
  max-width: 640px;
  margin: 0 auto 28px;
  color: var(--muted);
}

.btn {
  display: inline-block;
  padding: 16px 32px;
  border-radius: 999px;
  background: linear-gradient(135deg, #7cf18c, #56b5f5);
  color: #ffffff;
  text-decoration: none;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 40px rgba(86, 181, 245, 0.32);
}

.legal {
  text-align: center;
}

.legal h2 {
  margin-top: 0;
  margin-bottom: 16px;
  font-size: clamp(2rem, 4vw, 2.4rem);
}

.legal p {
  margin: 0 auto 24px;
  max-width: 540px;
  color: var(--muted);
}

.legal-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 18px;
}

.legal-links a {
  color: #2563eb;
  font-weight: 600;
  text-decoration: none;
}

.legal-links a:hover {
  text-decoration: underline;
}

footer {
  text-align: center;
  padding: 48px 24px 64px;
  color: rgba(15, 23, 42, 0.6);
  font-size: 0.95rem;
}

@media (max-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 880px) {
  .phrase-layout {
    grid-template-columns: 1fr;
  }

  .phrase-copy {
    text-align: center;
  }

  .phrase-benefits {
    justify-items: center;
  }

  .phrase-benefits li {
    padding-left: 0;
  }

  .phrase-benefits li::before {
    display: none;
  }
}

@media (max-width: 640px) {
  main {
    margin-top: -64px;
    padding: 0 16px 88px;
  }

  section {
    border-radius: 24px;
    padding: 48px 20px;
  }

  .phone-preview {
    padding: 18px;
    border-radius: 28px;
  }

  .phone-screen {
    min-height: 380px;
    padding: 28px 18px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
  }
}

@keyframes hero-breath {
  0%,
  100% {
    transform: translateX(-50%) scale(1);
  }
  50% {
    transform: translateX(-50%) scale(1.1);
  }
}

@keyframes phrase-pop {
  0% {
    transform: scale(0.98);
  }
  50% {
    transform: scale(1.01);
  }
  100% {
    transform: scale(1);
  }
}