/*
  Основні кольори та повторювані значення.
  Так їх легко змінити в одному місці, якщо в Bit.City з'явиться окремий брендбук.
*/
:root {
  --color-bg: #f5f7fb;
  --color-surface: #ffffff;
  --color-surface-soft: #eef2ff;
  --color-text: #121826;
  --color-muted: #667085;
  --color-border: #dde3f0;
  --color-primary: #4f46e5;
  --color-primary-dark: #3730a3;
  --color-accent: #7c3aed;
  --color-success-soft: #ecfdf5;
  --shadow-soft: 0 18px 45px rgba(18, 24, 38, 0.08);
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --container-width: 1120px;
}

/*
  box-sizing: border-box робить розміри елементів передбачуваними:
  padding і border входять у загальну ширину елемента.
*/
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at top left, rgba(79, 70, 229, 0.14), transparent 34rem),
    var(--color-bg);
  color: var(--color-text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

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

p,
h1,
h2,
h3 {
  margin: 0;
}

.page-shell {
  width: min(100%, var(--container-width));
  margin: 0 auto;
  padding: 18px 16px 32px;
}

.site-header {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  align-items: center;
  padding: 14px;
  border: 1px solid rgba(221, 227, 240, 0.8);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 10px 30px rgba(18, 24, 38, 0.05);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.brand__mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #ffffff;
}

.brand__text {
  font-size: 1.2rem;
}

.site-header__tagline {
  color: var(--color-muted);
  font-size: 0.95rem;
}

.site-header__login {
  justify-self: stretch;
}

.hero {
  margin-top: 18px;
  padding: 36px 20px;
  border-radius: 30px;
  background: linear-gradient(145deg, #ffffff 0%, #eef2ff 100%);
  box-shadow: var(--shadow-soft);
}

.hero__content {
  max-width: 760px;
}

.eyebrow {
  margin-bottom: 10px;
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  font-size: clamp(2.1rem, 12vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.07em;
}

h2 {
  font-size: clamp(1.7rem, 8vw, 2.8rem);
  line-height: 1.08;
  letter-spacing: -0.05em;
}

h3 {
  font-size: 1.08rem;
  line-height: 1.3;
}

.hero__lead {
  margin-top: 18px;
  max-width: 620px;
  color: var(--color-muted);
  font-size: 1.05rem;
}

.actions {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-weight: 800;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button:focus-visible,
.service-card:focus-visible,
.brand:focus-visible,
.site-footer a:focus-visible {
  outline: 3px solid rgba(79, 70, 229, 0.28);
  outline-offset: 3px;
}

.button--primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: #ffffff;
  box-shadow: 0 14px 28px rgba(79, 70, 229, 0.24);
}

.button--secondary,
.button--ghost {
  border: 1px solid var(--color-border);
  background: #ffffff;
  color: var(--color-primary-dark);
}

.section {
  margin-top: 26px;
  padding: 24px 0 0;
}

.section__heading {
  max-width: 690px;
  margin-bottom: 16px;
}

.section__heading p:not(.eyebrow) {
  margin-top: 10px;
  color: var(--color-muted);
}

.cards-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.info-card,
.service-card {
  position: relative;
  min-height: 150px;
  border: 1px solid rgba(221, 227, 240, 0.9);
  border-radius: var(--radius-md);
  background: var(--color-surface);
  box-shadow: 0 12px 26px rgba(18, 24, 38, 0.05);
}

.info-card {
  display: grid;
  gap: 8px;
  padding: 18px;
}

.info-card__label {
  width: fit-content;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--color-surface-soft);
  color: var(--color-primary-dark);
  font-size: 0.78rem;
  font-weight: 800;
}

.info-card p,
.info-card small,
.service-card__text {
  color: var(--color-muted);
}

.info-card small {
  display: block;
  font-size: 0.82rem;
}

.service-card {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 20px;
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.service-card:hover,
.service-card:focus-visible {
  border-color: rgba(79, 70, 229, 0.35);
  box-shadow: var(--shadow-soft);
  transform: translateY(-2px);
}

.service-card--disabled {
  cursor: default;
}

.service-card--disabled:hover {
  transform: none;
}

.service-card__icon {
  display: grid;
  width: 42px;
  height: 42px;
  place-items: center;
  border-radius: 14px;
  background: var(--color-surface-soft);
  color: var(--color-primary-dark);
  font-weight: 900;
}

.service-card__title {
  padding-right: 70px;
  font-size: 1.05rem;
  font-weight: 850;
  line-height: 1.25;
}

.service-card__text {
  font-size: 0.95rem;
}

.badge {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 5px 9px;
  border-radius: 999px;
  background: var(--color-success-soft);
  color: #047857;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.after-login {
  padding: 24px 18px;
  border-radius: var(--radius-lg);
  background: #ffffff;
  box-shadow: var(--shadow-soft);
}

.feature-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  position: relative;
  padding-left: 30px;
  color: var(--color-text);
}

.feature-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  border-radius: 999px;
  background: var(--color-surface-soft);
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 900;
}

.site-footer {
  display: grid;
  gap: 16px;
  margin-top: 26px;
  padding: 22px 0 0;
  color: var(--color-muted);
}

.site-footer strong {
  color: var(--color-text);
  font-size: 1.08rem;
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
}

.site-footer__links a {
  color: var(--color-primary-dark);
  font-weight: 750;
}

.site-footer__copy {
  font-size: 0.9rem;
}

/*
  На планшетах і десктопах додаємо більше колонок.
  Мобільні стилі залишаються основними, тому сторінка добре працює на 320–360px.
*/
@media (min-width: 720px) {
  .page-shell {
    padding: 24px 24px 42px;
  }

  .site-header {
    grid-template-columns: auto 1fr auto;
    padding: 16px 18px;
  }

  .site-header__tagline {
    justify-self: center;
  }

  .site-header__login {
    justify-self: end;
    min-width: 118px;
  }

  .hero {
    margin-top: 24px;
    padding: 72px 54px;
  }

  .actions {
    grid-template-columns: repeat(2, max-content);
  }

  .button {
    padding: 0 24px;
  }

  .section {
    margin-top: 40px;
    padding-top: 34px;
  }

  .cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .cards-grid--today,
  .cards-grid--services {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .after-login {
    display: grid;
    grid-template-columns: 0.95fr 1.05fr;
    gap: 34px;
    align-items: start;
    padding: 34px;
  }

  .site-footer {
    grid-template-columns: 1fr auto auto;
    align-items: start;
  }
}