:root {
  color-scheme: light;
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-strong: #0f172a;
  --text: #13203a;
  --muted: #56627a;
  --border: #d9e2ef;
  --accent: #4355ff;
  --accent-soft: #e8ebff;
  --success: #157347;
  --shadow: 0 24px 60px rgba(16, 19, 35, 0.12);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, Arial, Helvetica, sans-serif;
  background: linear-gradient(180deg, #f7f9fd 0%, #eef3fb 100%);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.container {
  width: min(var(--container), calc(100% - 2rem));
  margin: 0 auto;
}

.page-shell {
  min-height: 100vh;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(14px);
  background: rgba(244, 247, 251, 0.84);
  border-bottom: 1px solid rgba(217, 226, 239, 0.7);
}

.header-inner,
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--surface-strong);
}

.site-nav,
.footer-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-nav a,
.footer-nav a {
  color: var(--muted);
  font-weight: 600;
}

.hero-section {
  padding: 4.5rem 0 2rem;
}

.hero-grid,
.info-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 2rem;
  align-items: start;
}

.eyebrow,
.section-label {
  margin: 0 0 0.75rem;
  color: var(--accent);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.78rem;
}

h1,
h2,
h3 {
  margin: 0;
  color: var(--surface-strong);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.7rem);
}

h3 {
  font-size: 1.15rem;
}

.hero-text,
.section-text,
.calculator-intro,
.footer-text,
.page-intro {
  color: var(--muted);
}

.hero-text {
  max-width: 38rem;
  font-size: 1.1rem;
  margin: 1.25rem 0 1.5rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero-badges span,
.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.7rem 0.95rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid var(--border);
  font-weight: 600;
  color: var(--muted);
}

.calculator-card,
.info-card,
.disclaimer-card,
.page-card,
.result-card {
  background: var(--surface);
  border: 1px solid rgba(217, 226, 239, 0.9);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
}

.calculator-card {
  padding: 1.5rem;
}

.calculator-header {
  margin-bottom: 1.25rem;
}

.mode-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.mode-tab {
  border: 1px solid var(--border);
  background: #f8faff;
  color: var(--muted);
  border-radius: var(--radius-sm);
  padding: 0.85rem 0.9rem;
  font-weight: 700;
}

.mode-tab.is-active {
  background: var(--surface-strong);
  color: #ffffff;
  border-color: var(--surface-strong);
}

.field-group {
  display: grid;
  gap: 0.65rem;
  margin-bottom: 1rem;
}

.field-label {
  font-weight: 700;
  color: var(--surface-strong);
}

.time-fields,
.buffer-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

select,
input[type="number"] {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fbfcff;
  color: var(--surface-strong);
  min-height: 3.3rem;
  padding: 0 1rem;
}

#hour-select,
#meridiem-select {
  min-width: 6rem;
}

#minute-input {
  width: 6rem;
}

#buffer-input {
  width: 7rem;
}

.minute-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.minute-wrap span {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--surface-strong);
}

.field-help,
.validation-message,
.result-meta,
.note-text {
  color: var(--muted);
  font-size: 0.95rem;
}

.validation-message {
  min-height: 1.5rem;
  margin: 0;
}

.results-section,
.info-section,
.faq-section,
.page-section {
  padding: 1rem 0 2rem;
}

.section-heading {
  margin-bottom: 1.5rem;
}

.copy-status {
  min-height: 1.5rem;
  color: var(--success);
  font-weight: 700;
  margin: 0 0 1rem;
}

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

.result-card {
  padding: 1.25rem;
  display: grid;
  gap: 0.8rem;
}

.result-card.featured {
  border-color: rgba(67, 85, 255, 0.35);
  background: linear-gradient(180deg, #ffffff 0%, #f7f8ff 100%);
}

.result-badge {
  align-self: start;
  width: fit-content;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
  font-size: 0.8rem;
}

.result-time {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--surface-strong);
}

.result-copy {
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--surface-strong);
  color: #ffffff;
  padding: 0.8rem 1rem;
  font-weight: 700;
}

.info-cards,
.faq-list {
  display: grid;
  gap: 1rem;
}

.info-card,
.disclaimer-card,
.page-card {
  padding: 1.4rem;
}

.disclaimer-section {
  padding: 0.5rem 0 2rem;
}

.faq-list details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1rem 1.1rem;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--surface-strong);
}

.faq-list p {
  margin: 0.85rem 0 0;
  color: var(--muted);
}

.site-footer {
  padding: 2rem 0 3rem;
}

.footer-brand {
  display: inline-block;
  margin-bottom: 0.5rem;
}

.page-section {
  padding-top: 3rem;
}

.page-card h1 {
  font-size: clamp(2rem, 3vw, 3rem);
  margin-bottom: 1rem;
}

.page-card p,
.page-card li {
  color: var(--muted);
}

.page-card ul {
  padding-left: 1.2rem;
}

@media (max-width: 960px) {
  .hero-grid,
  .info-grid,
  .results-grid {
    grid-template-columns: 1fr;
  }

  .hero-section {
    padding-top: 3.2rem;
  }
}

@media (max-width: 720px) {
  .header-inner,
  .footer-inner,
  .site-nav,
  .footer-nav,
  .time-fields,
  .buffer-row {
    align-items: stretch;
  }

  .header-inner,
  .footer-inner {
    flex-direction: column;
  }

  .site-nav,
  .footer-nav,
  .hero-badges {
    width: 100%;
  }

  .mode-tabs {
    grid-template-columns: 1fr;
  }

  #hour-select,
  #meridiem-select,
  #minute-input,
  #buffer-input,
  .time-fields,
  .minute-wrap {
    width: 100%;
  }

  .time-fields {
    display: grid;
    grid-template-columns: 1fr;
  }

  .minute-wrap {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
  }

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

  .calculator-card,
  .info-card,
  .page-card,
  .result-card,
  .disclaimer-card {
    border-radius: 20px;
  }
}

/* Skip link */
.skip-link{position:absolute;top:-100%;left:1rem;background:var(--accent);color:#fff;padding:0.5rem 1rem;border-radius:var(--radius-sm);z-index:200;font-weight:600;font-size:0.875rem;text-decoration:none;}.skip-link:focus{top:1rem;}

/* Focus and hover */
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px;}
input:focus,select:focus,textarea:focus{border-color:var(--accent);}
.site-nav a:hover,.footer-nav a:hover{color:var(--accent);}

/* Transitions */
a,button{transition:color 0.2s ease,background-color 0.2s ease,border-color 0.2s ease,transform 0.2s ease,box-shadow 0.2s ease;}
input,select,textarea{transition:border-color 0.2s ease,box-shadow 0.2s ease;}

/* Cookie banner */
.cookie-banner{display:none;position:fixed;bottom:0;left:0;right:0;background:var(--surface-strong);color:#fff;padding:1rem 2rem;align-items:center;justify-content:space-between;gap:1rem;z-index:1000;flex-wrap:wrap;box-shadow:0 -2px 16px rgba(0,0,0,0.25);}
.cookie-banner.active{display:flex;}
.cookie-banner p{margin:0;font-size:0.9rem;flex:1 1 300px;line-height:1.5;}
.cookie-banner a{color:var(--accent);text-decoration:underline;}
.cookie-actions{display:flex;gap:0.5rem;flex-shrink:0;}
.cookie-btn{padding:0.5rem 1.25rem;border:none;border-radius:var(--radius-sm);cursor:pointer;font-weight:600;font-size:0.85rem;font-family:inherit;}
.cookie-accept{background:var(--accent);color:#fff;}
.cookie-accept:hover{opacity:0.9;}
.cookie-decline{background:transparent;color:#fff;border:1px solid rgba(255,255,255,0.3);}
.cookie-decline:hover{background:rgba(255,255,255,0.1);}

/* Ad containers */
.ad-container{display:flex;justify-content:center;align-items:center;padding:1rem 1.5rem;max-width:var(--container);margin:0 auto;min-height:90px;}

/* Related tools */
.related-tools{padding:3rem 1.5rem;max-width:var(--container);margin:0 auto;}
.related-tools h2{text-align:center;margin-bottom:0.5rem;}
.related-desc{text-align:center;color:var(--muted);margin-bottom:2rem;font-size:0.95rem;}
.related-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1rem;}
.related-card{display:block;padding:1.25rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);text-decoration:none;color:inherit;}
.related-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 4px 12px rgba(0,0,0,0.08);}
.related-card strong{display:block;margin-bottom:0.25rem;color:var(--text);}
.related-card span{font-size:0.875rem;color:var(--muted);}

/* Copyright */
.copyright{text-align:center;padding:1.5rem;color:var(--muted);font-size:0.8rem;border-top:1px solid var(--border);margin-top:1rem;}

/* Fix results grid to be responsive */
.results-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));}