/* ============================================================
   app.css — Layout: header, main scroll area, bottom tabs
   All colors come from theme.css variables.
   ============================================================ */

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

html {
  height: 100%;
  background: var(--color-bg); /* Estende il colore di sfondo fino ai bordi estremi */
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: futura-100, sans-serif;
  /* Reserve space for fixed header and tab bar */
  padding-top: calc(var(--header-height) + env(safe-area-inset-top));
  padding-bottom: calc(var(--tab-height) + env(safe-area-inset-bottom));
  touch-action: manipulation;
  min-height: 100%; /* Assicurati di aggiungere questo */
}

/* ── Fixed header ───────────────────────────────────────── */
#app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: calc(var(--header-height) + env(safe-area-inset-top));
  padding-top: env(safe-area-inset-top);
  background: var(--color-header-bg);
  color: var(--color-text-on-dark);
  display: flex;
  align-items: center;
  padding-left: 1rem;
  padding-right: 1rem;
  font-size: 1.1rem;
  font-weight: 600;
  z-index: 1000;
  background-image: url(../images/logo-right.png);
  background-size: auto 100%;
  background-position: right;
  background-repeat: no-repeat;
  border-bottom: 4px solid var(--color-primary);
}

/* ── Scrollable main area ───────────────────────────────── */
#app-main {
  /* Usiamo 100dvh (dynamic) e sottraiamo le altezze e le relative safe-area per un calcolo millimetrico */
  min-height: calc(100dvh - var(--header-height) - env(safe-area-inset-top) - var(--tab-height) - env(safe-area-inset-bottom));
  padding: 1rem;
  
  /* Rimosso overflow-y: auto; perché lo scroll lo gestisce il body in modo nativo */
  display: flex;
  flex-direction: column;
}

/* Modalità iframe: nessun padding, altezza esatta per riempire lo spazio */
#app-main.iframe-mode {
  padding: 0;
  height: calc(100dvh - var(--header-height) - env(safe-area-inset-top) - var(--tab-height) - env(safe-area-inset-bottom));
  min-height: unset;
  overflow: hidden;
}

.home-footer {
  margin-top: auto;          /* spinge il blocco in fondo */
  padding-top: 1rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ── Bottom tab bar ─────────────────────────────────────── */
#app-tabs {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  padding-bottom: env(safe-area-inset-bottom);
  background: var(--color-tab-bg);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  z-index: 1000;
}

/* Sponsor banner row */
#sponsor-bar {
  background: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 4px 12px;
  width: 100%;
  background-size: cover;
  /*background-position: bottom right;*/
  background-repeat: no-repeat;
}

#sponsor-logo {
  height: 22px;
  padding: 5px 0;
  width: auto;
  object-fit: contain;
  display: block;
}

/* Tab buttons row */
#tab-buttons {
  display: flex;
  height: var(--tab-height);
  width: 100%;
}

.tab-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  border: none;
  background: transparent;
  color: var(--color-secondary);
  font-size: 0.65rem;
  cursor: pointer;
  transition: color 0.2s;
}

.tab-btn i { font-size: 1.4rem; }

.tab-btn.active {
  color: var(--color-primary);
}

/* ── Install overlay ────────────────────────────────────── */
#install-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 9999;
  padding: 1rem;
}

#install-modal {
  background: var(--color-surface);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  width: 100%;
  max-width: 480px;
}

/* ── Home CTA Buttons ───────────────────────────────────── */
.home-cta-buttons {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.5rem;
  justify-content: center;
  flex-direction: column;
}

.home-cta-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex: 1;
  padding: 0.75rem 1.25rem;
  border-radius: 30px;
  font-family: futura-100, sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition:
    background-color 0.25s ease,
    color 0.25s ease,
    outline-offset 0.2s ease,
    outline-color 0.25s ease,
    transform 0.15s ease;
  outline: 3px solid transparent;
  outline-offset: 0px;

}

.home-cta-btn i {
  font-size: 1.2rem;
}

/* Primary button — filled with --color-primary */
.home-cta-btn--primary {
  background-color: var(--color-primary);
  color: #ffffff;
  border: 2px solid var(--color-primary);
}

.home-cta-btn--primary:hover,
.home-cta-btn--primary:focus-visible {
  background-color: transparent;
  color: var(--color-primary);
  outline: 3px solid var(--color-primary);
  outline-offset: 3px;
  transform: translateY(-2px);
}

.home-cta-btn--primary:active {
  transform: translateY(0);
  outline-offset: 1px;
}

/* Secondary button — filled with --color-secondary */
.home-cta-btn--secondary {
  background-color: var(--color-secondary);
  color: #ffffff;
  border: 2px solid var(--color-secondary);
}

.home-cta-btn--secondary:hover,
.home-cta-btn--secondary:focus-visible {
  background-color: transparent;
  color: var(--color-secondary);
  outline: 3px solid var(--color-secondary);
  outline-offset: 3px;
  transform: translateY(-2px);
}

.home-cta-btn--secondary:active {
  transform: translateY(0);
  outline-offset: 1px;
}


.small {font-size: 0.75rem;}



/* ── Agenda ─────────────────────────────────────────────── */

.agenda-day {
  margin-bottom: 2rem;
}

.agenda-day-header {
  background: var(--color-primary);
  color: #ffffff;
  font-size: 1rem;
  font-weight: 700;
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  margin-bottom: 0.95rem;
  letter-spacing: 0.03em;
}

.agenda-item {
  display: flex;
  gap: 0.75rem;
  padding: 0.65rem 0.75rem;
  background: var(--color-surface);
  border-left: 3px solid var(--color-border);
  border-radius: 8px;
  margin-bottom: 0.4rem;
}

.agenda-time {
  flex-shrink: 0;
  width: 90px;
  font-size: 0.72rem;
  font-weight: 600;
  padding-top: 2px;
  line-height: 1.3;
  color:var(--color-primary-dark);
}

.agenda-content {
  flex: 1;
  min-width: 0;
}

.agenda-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  line-height: 1.4;
}

.agenda-title.primary,
.agenda-time.primary {
  color: var(--color-primary);
}


.agenda-subtitle {
  font-size: 0.82rem;
  color: var(--color-text);
  margin-top: 2px;
  line-height: 1.4;
}

.agenda-speaker {
  font-size: 0.75rem;
  color: var(--color-secondary);
  margin-top: 3px;
}

.agenda-list {
  padding-left: 1rem;
  margin: 0.5rem 0 0;
  list-style: disc;
}

.agenda-list li {
  font-size: 0.82rem;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.agenda-title.break-out1 {color:var(--breakout1);}
.agenda-title.break-out2 {color:var(--breakout2);}
.agenda-title.break-out3 {color:var(--breakout3);}

.agenda-item.break-out1 {border-left:3px solid var(--breakout1);}
.agenda-item.break-out2 {border-left:3px solid var(--breakout2);}
.agenda-item.break-out3 {border-left:3px solid var(--breakout3);}


/* ── Splash Screen ──────────────────────────────────────── */

#splash-screen {
  position: fixed;
  inset: 0;
  background: var(--color-header-bg);   /* usa il colore dell'header, cambialo se vuoi */
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 99999;
  transition: opacity 0.5s ease;
}

#splash-screen img {
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

#splash-screen.splash-hide {
  opacity: 0;
}




/* ── Q&A Form ───────────────────────────────────────────── */

.qa-form {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.qa-label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.qa-textarea {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: 0.75rem;
  font-size: 0.9rem;
  color: var(--color-text);
  background: var(--color-surface);
  resize: none;
  outline: none;
  transition: border-color 0.2s;
}

.qa-textarea:focus {
  border-color: var(--color-primary);
}

.qa-counter {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  text-align: right;
}

.qa-submit-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--color-primary);
  color: var(--color-text-on-dark);
  border: none;
  border-radius: 30px;
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}

.qa-submit-btn:active {
  background: var(--color-primary-dark);
}

.qa-feedback {
  font-size: 0.85rem;
  padding: 0.6rem 0.75rem;
  border-radius: 8px;
  text-align: center;
}

.qa-feedback--success {
  background: #DCFCE7;
  color: #166534;
}

.qa-feedback--error {
  background: #FEE2E2;
  color: #991B1B;
}


/* ── Q&A Thank You ──────────────────────────────────────── */

.qa-thankyou {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 3rem 1rem;
  gap: 1rem;
}

.qa-thankyou-icon {
  font-size: 3.5rem;
  color: var(--color-success);
}

.qa-thankyou-message {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0;
}

.qa-thankyou-countdown {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin: 0;
}