/* RESET & VARIAVILI AD ALTO CONTRASTO PER IPOVEDENTI */
:root {
  --bg-color: #121212;
  --card-bg: #1E1E1E;
  --text-color: #FFFFFF;
  --text-muted: #D0D0D0;
  --primary-color: #FFD700; /* Giallo ad alta visibilità */
  --primary-text: #000000;
  --secondary-color: #2C2C2C;
  --secondary-border: #FFFFFF;
  --danger-color: #D32F2F;
  --danger-text: #FFFFFF;
  --warning-bg: #B35900;
  --warning-text: #FFFFFF;
  --focus-ring: #00E5FF;
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-main);
  font-size: 1.15rem;
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* HEADER STICKY */
.app-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: #000000;
  border-bottom: 3px solid var(--primary-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem 1.2rem;
}

.app-title {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--primary-color);
  letter-spacing: 0.5px;
}

.icon-btn {
  background: none;
  border: 2px solid transparent;
  color: var(--primary-color);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4px;
}

.icon-btn:focus-visible, button:focus-visible, input:focus-visible {
  outline: 4px solid var(--focus-ring);
  outline-offset: 2px;
}

/* MAIN CONTAINER */
.main-container {
  flex: 1;
  max-width: 700px;
  width: 100%;
  margin: 0 auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

/* CARDS */
.card {
  background-color: var(--card-bg);
  border: 2px solid #333333;
  border-radius: 12px;
  padding: 1rem;
}

/* BANNER PWA */
.install-banner {
  background-color: #222222;
  border: 3px solid var(--primary-color);
  border-radius: 12px;
  padding: 1rem;
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.install-banner[hidden] {
  display: none !important;
}

.banner-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
  font-weight: bold;
}

.close-btn {
  background: none;
  border: none;
  color: var(--text-color);
  font-size: 2rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 8px;
}

/* VIDEO FEED */
.video-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  background-color: #000;
  border-radius: 8px;
  overflow: hidden;
  border: 2px solid #444;
}

#camera-feed {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.status-overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.82);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1rem;
  font-size: 1.4rem;
  font-weight: bold;
  color: var(--primary-color);
}

.status-overlay[hidden] {
  display: none !important;
}

/* WARNING BOX */
.warning-box {
  background-color: var(--warning-bg);
  color: var(--warning-text);
  padding: 0.8rem;
  border-radius: 8px;
  margin-top: 0.8rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-weight: bold;
  font-size: 1.05rem;
}

.warning-box[hidden] {
  display: none !important;
}

/* PULSANTI GIGANTI (SENIOR UX) */
.action-buttons {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.secondary-actions {
  display: flex;
  gap: 1rem;
}

.secondary-actions .btn {
  flex: 1;
}

.btn {
  font-family: inherit;
  font-size: 1.3rem;
  font-weight: bold;
  padding: 1rem;
  border-radius: 12px;
  border: 2px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  text-decoration: none;
  text-align: center;
}

.btn-huge {
  font-size: 1.6rem;
  padding: 1.3rem 1rem;
  min-height: 70px;
}

.btn-primary {
  background-color: var(--primary-color);
  color: var(--primary-text);
  border-color: var(--primary-color);
}

.btn-primary:active {
  background-color: #e6c200;
}

.btn-secondary {
  background-color: var(--secondary-color);
  color: var(--text-color);
  border-color: var(--secondary-border);
}

.btn-danger {
  background-color: var(--danger-color);
  color: var(--danger-text);
}

.btn-full {
  width: 100%;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* RISULTATO OCR */
.section-title {
  font-size: 1.4rem;
  margin-bottom: 0.6rem;
  color: var(--primary-color);
}

.result-text-box {
  background-color: #000000;
  border: 2px solid #555555;
  border-radius: 8px;
  padding: 1rem;
  min-height: 120px;
  max-height: 250px;
  overflow-y: auto;
  font-size: 1.35rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

.placeholder-text {
  color: #888888;
  font-style: italic;
  font-size: 1.1rem;
}

/* CONTROLLI AUDIO */
.audio-controls {
  margin-top: 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.speed-control {
  flex: 1;
  min-width: 200px;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.speed-label {
  font-size: 1.1rem;
  font-weight: bold;
}

input[type="range"] {
  accent-color: var(--primary-color);
  height: 28px;
  cursor: pointer;
}

/* FOOTER PAGINA PRINCIPALE */
.app-footer {
  background-color: #000000;
  border-top: 1px solid #333333;
  padding: 1rem;
  text-align: center;
  font-size: 0.95rem;
  color: var(--text-muted);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: auto;
}

.link-btn {
  background: none;
  border: none;
  color: var(--primary-color);
  text-decoration: underline;
  font-size: inherit;
  font-family: inherit;
  cursor: pointer;
}

/* MODAL OVERLAY */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.88);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay[hidden] {
  display: none !important;
}

.modal-content {
  background-color: var(--card-bg);
  border: 3px solid var(--primary-color);
  border-radius: 12px;
  width: 100%;
  max-width: 600px;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
}

.modal-header {
  padding: 1rem;
  border-bottom: 2px solid #333;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-header h2 {
  color: var(--primary-color);
}

.modal-body {
  padding: 1rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  font-size: 1rem;
}

.modal-body ul {
  padding-left: 1.5rem;
}

.modal-body a {
  color: var(--primary-color);
}

.modal-body hr {
  border: 0;
  border-top: 1px solid #444;
  margin: 0.5rem 0;
}

.modal-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* RESPONSIVE DESKTOP */
@media (min-width: 600px) {
  body {
    font-size: 1.25rem;
  }
}