/* ==========================================================================
   Briefly – Landing page di pre-lancio
   ========================================================================== */

:root {
  --color-bg: #ffffff;
  --color-text: #0a0a0a;
  --color-muted: #6b6b6b;
  --color-border: #e5e5e5;

  /* Il file logo.png è usato per intero, senza alcun ritaglio: è un canvas
     1536x1024 (rapporto 1.5:1) con margine attorno alla scritta "Briefly".
     Header e animazione sono dimensionati di conseguenza. */
  --header-h: 140px;
  --logo-w: 170px;

  --font-main: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Curva "ease-out" morbida (decelerazione lunga, nessun tratto a velocità
     costante): percepita come più fluida di un ease-in-out classico su
     un'animazione breve come questa. */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

@media (max-width: 600px) {
  :root {
    --header-h: 108px;
    --logo-w: 128px;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  /* Riserva sempre lo spazio della scrollbar verticale (anche quando non serve
     ancora scrollare). Senza questo, la larghezza disponibile cambia leggermente
     nel momento in cui la scrollbar compare/scompare, spostando l'header
     (centrato orizzontalmente) di qualche px proprio alla fine dell'animazione
     del logo. Nota: "stable" non ha effetto se overflow-y è "hidden", per questo
     il blocco dello scroll durante lo splash è gestito in JS e non con
     overflow:hidden. */
  overflow-y: auto;
  scrollbar-gutter: stable;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-main);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a {
  color: inherit;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   Animazione di apertura
   -------------------------------------------------------------------------- */

.splash-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--color-bg);
  pointer-events: none;
}

.splash-logo-img {
  position: fixed;
  top: 50%;
  left: 50%;
  width: var(--logo-w);
  transform: translate(-50%, -50%) scale(2.2);
  transition: transform 0.9s var(--ease);
  will-change: transform;
  backface-visibility: hidden;
}

body.splash-shrink .splash-logo-img {
  transform: translate(-50%, -50%) scale(1) translateY(calc(-50vh + (var(--header-h) / 2)));
}

body.splash-done .splash-overlay {
  display: none;
}

/* Header: nascosto finché lo splash non ha raggiunto la posizione finale */
.site-header {
  position: sticky;
  top: 0;
  z-index: 900;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
}

.header-logo {
  width: var(--logo-w);
  opacity: 0;
}

body.splash-done .header-logo {
  opacity: 1;
}

/* Contenuto principale: nascosto, poi fade-in/slide-up leggero */
.main-content,
.site-footer {
  opacity: 0;
  transform: translateY(16px);
}

body.content-visible .main-content,
body.content-visible .site-footer {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

/* prefers-reduced-motion: niente animazione, tutto visibile subito */
@media (prefers-reduced-motion: reduce) {
  .splash-overlay {
    display: none;
  }
  .header-logo {
    opacity: 1;
  }
  .main-content,
  .site-footer {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .splash-logo-img {
    transition: none;
  }
}

/* --------------------------------------------------------------------------
   Hero: mockup iPhone
   -------------------------------------------------------------------------- */

.showcase {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 48px;
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 24px 72px;
}

.showcase-phone {
  display: flex;
  justify-content: center;
}

@media (max-width: 860px) {
  .showcase {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 8px 24px 56px;
    text-align: center;
  }

  .steps-list {
    text-align: left;
  }
}

.phone-frame {
  --phone-w: clamp(220px, 26vw, 280px);
  position: relative;
  width: var(--phone-w);
  padding: calc(var(--phone-w) * 0.055);
  background: #0a0a0a;
  border-radius: calc(var(--phone-w) * 0.145);
  box-shadow: 0 30px 60px -20px rgba(0, 0, 0, 0.35);
}

.phone-frame::before {
  /* Bordo interno sottile, effetto metallo */
  content: '';
  position: absolute;
  inset: calc(var(--phone-w) * 0.012);
  border-radius: calc(var(--phone-w) * 0.135);
  border: 1px solid rgba(255, 255, 255, 0.08);
  pointer-events: none;
}

.phone-notch {
  position: absolute;
  top: calc(var(--phone-w) * 0.055 + calc(var(--phone-w) * 0.02));
  left: 50%;
  transform: translateX(-50%);
  width: calc(var(--phone-w) * 0.32);
  height: calc(var(--phone-w) * 0.075);
  background: #0a0a0a;
  border-radius: calc(var(--phone-w) * 0.05);
  z-index: 2;
}

.phone-button {
  position: absolute;
  background: #0a0a0a;
  border-radius: 3px;
}

.phone-button--power {
  right: calc(var(--phone-w) * -0.012);
  top: calc(var(--phone-w) * 0.22);
  width: calc(var(--phone-w) * 0.012);
  height: calc(var(--phone-w) * 0.09);
}

.phone-button--vol-up {
  left: calc(var(--phone-w) * -0.012);
  top: calc(var(--phone-w) * 0.16);
  width: calc(var(--phone-w) * 0.012);
  height: calc(var(--phone-w) * 0.055);
}

.phone-button--vol-down {
  left: calc(var(--phone-w) * -0.012);
  top: calc(var(--phone-w) * 0.23);
  width: calc(var(--phone-w) * 0.012);
  height: calc(var(--phone-w) * 0.055);
}

.phone-screen {
  position: relative;
  width: 100%;
  aspect-ratio: 486 / 1080;
  background: #000;
  border-radius: calc(var(--phone-w) * 0.1);
  overflow: hidden;
}

.phone-video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  background: #000;
}

/* --------------------------------------------------------------------------
   Step list
   -------------------------------------------------------------------------- */

.showcase-steps {
  display: flex;
  flex-direction: column;
}

.steps-heading {
  margin: 0 0 28px;
  font-size: 1.4rem;
  font-weight: 700;
}

.steps-list {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0;
}

.steps-list::before {
  /* Linea verticale che collega i pallini numerati */
  content: '';
  position: absolute;
  top: 20px;
  bottom: 20px;
  left: 17.5px;
  width: 1px;
  background: var(--color-border);
}

.step {
  position: relative;
  display: flex;
  gap: 18px;
  padding-bottom: 32px;
}

.step:last-child {
  padding-bottom: 0;
}

.step-number {
  position: relative;
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--color-text);
  border-radius: 50%;
  background: var(--color-bg);
  font-weight: 700;
  font-size: 0.95rem;
}

.step-title {
  margin: 4px 0 6px;
  font-size: 1.05rem;
  font-weight: 600;
}

.step-desc {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--color-muted);
}

.step-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--color-text);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--color-text);
}

.chip-icon {
  flex-shrink: 0;
  color: var(--color-text);
}

/* --------------------------------------------------------------------------
   Sezione pre-iscrizione
   -------------------------------------------------------------------------- */

.signup {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 24px 8px;
}

.signup-heading {
  margin: 0 0 24px;
  max-width: 34ch;
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1.4;
  text-align: center;
  text-wrap: balance;
}

.signup-form {
  display: flex;
  align-items: stretch;
  gap: 12px;
  width: 100%;
  max-width: 440px;
}

.signup-input {
  flex: 1;
  min-width: 0;
  padding: 14px 18px;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-text);
  background: #fff;
  border: 1.5px solid var(--color-border);
  border-radius: 999px;
  outline: none;
  transition: border-color 0.2s ease;
}

.signup-input:focus {
  border-color: var(--color-text);
}

.signup-button {
  flex-shrink: 0;
  padding: 14px 28px;
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background: var(--color-text);
  border: none;
  border-radius: 999px;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.15s ease;
}

.signup-button:hover {
  opacity: 0.85;
}

.signup-button:active {
  transform: scale(0.97);
}

.signup-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.signup-message {
  min-height: 1.4em;
  margin-top: 16px;
  font-size: 0.95rem;
  font-weight: 500;
}

.signup-message.is-success {
  color: #147a3d;
}

.signup-message.is-error {
  color: #c1272d;
}

@media (max-width: 480px) {
  .signup-form {
    flex-direction: column;
  }

  .signup-button {
    width: 100%;
  }
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */

.site-footer {
  padding: 32px 24px 40px;
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.site-footer p {
  margin: 6px 0;
}

.site-footer a {
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}