// Base globale condivisa da apps/public e apps/private: custom properties dai token, reset essenziale,
// tipografia, utility di layout, pulsanti e form. Ogni app la include dal proprio styles.scss con `@use 'base';`.
@use 'sass:map';
@use 'tokens';
@use 'mixins' as mq;

:root {
  @each $name, $value in tokens.$colors {
    --color-#{$name}: #{$value};
  }
  @each $name, $value in tokens.$font-sizes {
    --font-size-#{$name}: #{$value};
  }
  @each $name, $value in tokens.$line-heights {
    --line-height-#{$name}: #{$value};
  }
  @each $name, $value in tokens.$font-weights {
    --font-weight-#{$name}: #{$value};
  }
  @each $name, $value in tokens.$spaces {
    --space-#{$name}: #{$value};
  }
  @each $name, $value in tokens.$radii {
    --radius-#{$name}: #{$value};
  }
  @each $name, $value in tokens.$shadows {
    --shadow-#{$name}: #{$value};
  }
  --font-sans: #{tokens.$font-sans};
  --font-mono: #{tokens.$font-mono};
  --container-max: #{tokens.$container-max};
  --header-height: #{tokens.$header-height};
  --gutter: var(--space-4);

  color-scheme: light;

  @include mq.up(md) {
    --gutter: var(--space-5);
  }
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-height) + var(--space-4));
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  color: var(--color-ink);
  background: var(--color-surface);
  -webkit-font-smoothing: antialiased;
}

img,
svg,
video {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
}

// --- Tipografia ---
h1,
h2,
h3,
h4 {
  margin: 0 0 var(--space-4);
  line-height: var(--line-height-tight);
  font-weight: var(--font-weight-bold);
  color: var(--color-ink);
  text-wrap: balance;
}

h1 {
  font-size: var(--font-size-4xl);
}
h2 {
  font-size: var(--font-size-3xl);
}
h3 {
  font-size: var(--font-size-2xl);
}
h4 {
  font-size: var(--font-size-xl);
}

p {
  margin: 0 0 var(--space-4);
}

a {
  color: var(--color-primary);
  text-underline-offset: 0.15em;

  &:hover {
    color: var(--color-primary-strong);
  }

  @include mq.focus-ring;
}

button {
  @include mq.focus-ring;
}

// --- Utility ---
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.visually-hidden {
  @include mq.visually-hidden;
}

.lead {
  font-size: var(--font-size-lg);
  color: var(--color-ink-muted);
  max-width: 65ch;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 44px;
  padding: var(--space-2) var(--space-5);
  border: 2px solid transparent;
  border-radius: var(--radius-pill);
  font-weight: var(--font-weight-semibold);
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color 0.15s ease,
    color 0.15s ease;

  &--primary {
    background: var(--color-primary);
    color: var(--color-on-primary);

    &:hover {
      background: var(--color-primary-strong);
      color: var(--color-on-primary);
    }
  }

  &--accent {
    background: var(--color-accent);
    color: var(--color-on-accent);

    &:hover {
      background: #{map.get(tokens.$colors, 'accent')};
      color: var(--color-on-accent);
      filter: brightness(0.95);
    }
  }

  &--outline {
    border-color: currentColor;
    background: transparent;
    color: var(--color-primary);
  }
}

// --- Form ---
// Campi: <app-form-field> (shared/form-field.ts) ha già la classe .form-field.
.form-grid {
  display: grid;
  gap: var(--space-4);

  @include mq.up(md) {
    grid-template-columns: 1fr 1fr;

    > .span-2 {
      grid-column: 1 / -1;
    }
  }
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);

  label {
    font-weight: var(--font-weight-semibold);
  }
  .optional {
    font-weight: var(--font-weight-regular);
    color: var(--color-ink-muted);
  }
  .hint {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--color-ink-muted);
  }
  input,
  select,
  textarea {
    min-height: 44px;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-ink-muted);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-ink);
    font: inherit;

    &[aria-invalid='true'] {
      border-color: var(--color-danger);
      box-shadow: 0 0 0 1px var(--color-danger);
    }
  }
  .error {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--color-danger);
  }
}

.field-error {
  margin: 0;
  font-size: var(--font-size-sm);
  color: var(--color-danger);
}

fieldset {
  // min-width: 0 → il contenuto largo (es. fila di giorni scorrevole) non allarga il fieldset (default min-content)
  min-width: 0;
  margin: 0 0 var(--space-5);
  padding: 0;
  border: 0;

  legend {
    margin-bottom: var(--space-3);
    padding: 0;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
  }
}

// Casella o radio con etichetta, area cliccabile ≥ 44 px
.check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  min-height: 44px;
  padding-block: var(--space-2);
  cursor: pointer;

  input {
    flex: none;
    width: 1.25rem;
    height: 1.25rem;
    margin: 0.15rem 0 0;
    accent-color: var(--color-primary);
  }
}

.alert {
  margin: 0 0 var(--space-4);
  padding: var(--space-3) var(--space-4);
  border-left: 4px solid currentColor;
  border-radius: var(--radius-md);
  background: var(--color-surface-alt);

  &--error {
    color: var(--color-danger);
  }
  &--success {
    color: var(--color-success);
  }
}