* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'Inter', Arial, sans-serif;
  min-height: 100vh;
  background:
    radial-gradient(circle at top, rgba(186, 226, 255, 0.95), rgba(231, 246, 255, 0.98) 38%, #f7fbff 100%);
  color: #18354a;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.app-shell {
  width: 100%;
  max-width: 560px;
}

.app-card {
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(173, 216, 255, 0.5);
  border-radius: 30px;
  padding: 30px;
  box-shadow:
    0 18px 40px rgba(74, 133, 181, 0.16),
    0 0 0 1px rgba(255, 255, 255, 0.35) inset;
  backdrop-filter: blur(12px);
}

.eyebrow {
  margin: 0 0 8px 0;
  text-transform: uppercase;
  letter-spacing: 1.8px;
  font-size: 12px;
  color: #5f8fb4;
  text-align: center;
}

h1 {
  margin: 0;
  text-align: center;
  font-family: 'DM Sans', sans-serif;
  font-size: 52px;
  line-height: 1.05;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: #12324a;
}

.tagline {
  margin-top: 10px;
  font-size: 13px;
  color: #5f8fb4;
  text-align: center;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.subtitle {
  text-align: center;
  margin: 14px auto 34px auto;
  color: #56788f;
  font-size: 15px;
  line-height: 1.7;
  max-width: 520px;
}

.form-group {
  margin-bottom: 18px;
}

label {
  display: block;
  margin-bottom: 8px;
  font-weight: bold;
  font-size: 14px;
  color: #244c68;
}

input,
select {
  width: 100%;
  padding: 15px 16px;
  border-radius: 16px;
  border: 1px solid #c8e5fb;
  background: #fafdff;
  font-size: 16px;
  color: #18354a;
  outline: none;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

input:focus,
select:focus {
  border-color: #8fcfff;
  box-shadow: 0 0 0 3px rgba(143,207,255,0.22);
}

button {
  border: none;
  border-radius: 16px;
  font-size: 15px;
  font-weight: bold;
  cursor: pointer;
  transition: transform 0.15s ease, opacity 0.15s ease, box-shadow 0.15s ease;
}

button:hover {
  transform: translateY(-2px);
  opacity: 0.98;
}

.primary-button {
  width: 100%;
  padding: 16px;
  margin: 8px 0 20px 0;
  background: linear-gradient(180deg, #aee2ff, #7cccff);
  color: #10324b;
  box-shadow: 0 10px 20px rgba(120, 200, 255, 0.28);
  letter-spacing: 0.2px;
  font-family: 'Inter', Arial, sans-serif;
  font-weight: 600;
}

.secondary-button {
  padding: 13px 10px;
  background: #dff2ff;
  color: #204762;
  font-family: 'Inter', Arial, sans-serif;
  font-weight: 600;
}

.result-card,
.timer-card,
.streak-card,
.protocol-card {
  background: linear-gradient(180deg, rgba(245, 251, 255, 0.95), rgba(235, 247, 255, 0.92));
  border: 1px solid #d6edff;
  border-radius: 22px;
  padding: 20px;
  text-align: center;
  margin-top: 14px;
}

.result-label {
  margin: 0 0 8px 0;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  font-size: 12px;
  color: #6b96b6;
}

.result-time {
  margin: 4px 0;
  font-size: 40px;
  font-weight: 700;
  color: #0f3048;
}

.result-note {
  margin: 10px 0 0 0;
  font-size: 13px;
  color: #5d7f98;
  line-height: 1.45;
}

.timer-display,
.protocol-display {
  margin: 6px 0 10px 0;
  font-size: 48px;
  font-weight: bold;
  color: #10324b;
}

.breathing-text {
  margin: 0 0 12px 0;
  font-size: 14px;
  color: #6c8fa6;
}

.breath-circle-wrap {
  display: flex;
  justify-content: center;
  margin: 10px 0 20px 0;
}

.breath-circle {
  width: 108px;
  height: 108px;
  border-radius: 999px;
  background: radial-gradient(circle at top, #d8f0ff, #8fd3ff);
  color: #10324b;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  box-shadow: 0 10px 24px rgba(111, 184, 230, 0.25);
  transform: scale(1);
}

.breathing-animate {
  animation: breathe 6s ease-in-out infinite;
}

@keyframes breathe {
  0% { transform: scale(0.95); }
  25% { transform: scale(1.15); }
  50% { transform: scale(1.15); }
  75% { transform: scale(0.95); }
  100% { transform: scale(0.95); }
}

.button-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

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

.streak-number {
  margin: 0;
  font-size: 30px;
  font-weight: bold;
  color: #12324a;
}

.protocol-label {
  margin: 0;
  font-size: 18px;
  font-weight: bold;
  color: #244c68;
}

.calculator-section {
  background: linear-gradient(180deg,#f7fbff,#eef7ff);
  border-radius: 26px;
  padding: 22px;
  border: 1px solid rgba(173,216,255,0.35);
  box-shadow: 0 10px 28px rgba(120,200,255,0.18);
  margin-bottom: 20px;
}

.share-section {
  margin-top: 18px;
}

.share-button {
  margin-bottom: 0;
}

.share-card {
  margin-top: 18px;
  padding: 24px;
  border-radius: 24px;
  background: linear-gradient(180deg, #e8f7ff, #cdeeff);
  color: #12324a;
  box-shadow: 0 14px 30px rgba(99, 165, 207, 0.18);
}

.share-eyebrow {
  margin: 0 0 6px 0;
  text-transform: uppercase;
  letter-spacing: 1.6px;
  font-size: 12px;
  color: #5f8fb4;
}

.share-card h2 {
  margin: 0 0 18px 0;
  font-size: 28px;
}

.share-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.warning {
  margin-top: 8px;
  color: #b84a4a;
  font-size: 13px;
  font-weight: 600;
}

.share-stat {
  background: rgba(255, 255, 255, 0.6);
  border-radius: 16px;
  padding: 14px 10px;
  text-align: center;
}

.share-label {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: #6d93af;
  margin-bottom: 8px;
}

.share-footer {
  margin: 18px 0 0 0;
  text-align: center;
  color: #6d93af;
  font-size: 13px;
  letter-spacing: 1px;
}

.footer-note {
  margin: 18px 0 0 0;
  text-align: center;
  font-size: 12px;
  color: #7894aa;
}
.seo-heading {
  font-size: 18px;
  text-align: center;
  color: #6c8fa6;
  margin-top: 4px;
}
.seo-text {
  margin-top: 25px;
  font-size: 14px;
  line-height: 1.6;
  color: #4e6f86;
}
.chart-card {
  background: linear-gradient(180deg, rgba(245, 251, 255, 0.95), rgba(235, 247, 255, 0.92));
  border: 1px solid #d6edff;
  border-radius: 22px;
  padding: 20px;
  margin-top: 14px;
}

.chart-row {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 8px;
  padding: 10px 0;
  border-bottom: 1px solid #e4f2fc;
  font-size: 14px;
  color: #244c68;
}

.chart-row:last-of-type {
  border-bottom: none;
}

.chart-head {
  font-weight: bold;
  color: #12324a;
}

.chart-note {
  margin: 14px 0 0 0;
  font-size: 13px;
  line-height: 1.5;
  color: #5d7f98;
}
.faq-card {
  background: linear-gradient(180deg, rgba(245, 251, 255, 0.95), rgba(235, 247, 255, 0.92));
  border: 1px solid #d6edff;
  border-radius: 22px;
  padding: 20px;
  margin-top: 14px;
}

.faq-item + .faq-item {
  margin-top: 16px;
}

.faq-item h3 {
  margin: 0 0 6px 0;
  font-size: 17px;
  color: #1d4561;
}

.faq-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: #5d7f98;
}
.chart-intro {
  font-size: 14px;
  color: #5d7f98;
  margin-bottom: 10px;
}
.benefits-card {
  background: linear-gradient(180deg, rgba(245, 251, 255, 0.95), rgba(235, 247, 255, 0.92));
  border: 1px solid #d6edff;
  border-radius: 22px;
  padding: 20px;
  margin-top: 14px;
}

.benefits-card h2 {
  margin: 0 0 10px 0;
  font-size: 24px;
  color: #12324a;
}

.benefits-card p {
  margin: 0 0 12px 0;
  font-size: 14px;
  line-height: 1.6;
  color: #4e6f86;
}

.benefits-card p:last-child {
  margin-bottom: 0;
}

.hero {
  text-align: center;
  margin-bottom: 28px;
}

h2 {
  font-family: 'DM Sans', sans-serif;
  font-size: 32px;
  line-height: 1.1;
  font-weight: 600;
  color: #12324a;
  margin: 0 0 10px 0;
}

h3 {
  font-family: 'Inter', Arial, sans-serif;
  font-size: 17px;
  font-weight: 600;
  color: #1d4561;
}
.seo-text,
.benefits-card p,
.faq-item p,
.chart-note,
.result-note,
.footer-note {
  line-height: 1.7;
}
.hero-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 14px auto;
  border-radius: 50%;
  background: linear-gradient(180deg,#dff3ff,#bde6ff);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  box-shadow: 0 8px 18px rgba(120,200,255,0.35);
}
.learn-section {
  margin-top: 26px;
}

.learn-links {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 12px;
}

.learn-card {
  display: block;
  text-decoration: none;
  background: linear-gradient(180deg,#f7fbff,#eef7ff);
  border: 1px solid #d6edff;
  border-radius: 20px;
  padding: 18px;
  transition: transform .15s ease, box-shadow .15s ease;
}

.learn-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(120,200,255,.25);
}

.learn-card h3 {
  margin: 0 0 6px 0;
}

.learn-card p {
  margin: 0;
  font-size: 14px;
  color: #5d7f98;
}
.site-nav {
  width: 100%;
  max-width: 720px;
  margin: 0 auto 20px auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-family: 'DM Sans', sans-serif;
  font-weight: 700;
  font-size: 18px;
  text-decoration: none;
  color: #12324a;
}

.nav-links {
  display: flex;
  gap: 16px;
}

.nav-links a {
  text-decoration: none;
  font-size: 14px;
  color: #5d7f98;
  font-weight: 500;
}

.nav-links a:hover {
  color: #12324a;
}