/* Pietrino EDS v2.1.0 - Base CSS */

/* ---- RESET & FONDAMENTA ---- */
.pietrino-widget *, .pietrino-widget *::before, .pietrino-widget *::after {
  box-sizing: border-box; margin: 0; padding: 0;
}
.pietrino-widget {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  border-radius: 16px;
  overflow: hidden;
  margin: 1.5rem 0;
  max-width: 820px;
  transition: box-shadow .3s ease;
  position: relative;
}
.pietrino-widget:focus-within { box-shadow: 0 8px 40px rgba(0,0,0,.12); }

/* ---- HEADER ---- */
.pietrino-header {
  display: flex; align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid rgba(0,0,0,.06);
}
.pietrino-logo { display: flex; align-items: center; gap: 11px; }
.pietrino-logo-mark {
  width: 34px; height: 34px; border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; font-weight: 700; color: #fff;
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(184,134,11,.35);
}
.pietrino-logo-text { font-size: 15px; font-weight: 700; letter-spacing: -.02em; line-height: 1.2; }
.pietrino-logo-sub { font-size: 10px; letter-spacing: .06em; text-transform: uppercase; opacity: .55; margin-top: 1px; }
.pietrino-mode-badge {
  font-size: 11px; padding: 4px 11px;
  border-radius: 20px; font-weight: 600; letter-spacing: .02em;
}

/* ---- CREDITS BAR ---- */
.pietrino-credits-bar {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 20px; font-size: 12px;
  border-bottom: 1px solid rgba(0,0,0,.05);
}
.pietrino-credits-label { opacity: .6; }
.pietrino-credits-icon { font-size: 14px; }
.pietrino-balance-val { font-weight: 800; font-size: 15px; }
.pietrino-buy-credits {
  margin-left: auto;
  font-size: 11px; font-weight: 600;
  text-decoration: none;
  padding: 4px 12px; border-radius: 20px;
  transition: opacity .15s, transform .15s;
  display: inline-flex; align-items: center; gap: 4px;
}
.pietrino-buy-credits:hover { opacity: .85; transform: translateX(1px); }

/* ---- TOPIC BANNER ---- */
.pietrino-topic-banner {
  padding: 8px 20px; font-size: 12px;
  border-bottom: 1px solid rgba(0,0,0,.05);
  display: flex; align-items: center; gap: 8px;
}
.pietrino-topic-label { font-weight: 600; opacity: .7; }

/* ---- TABS ---- */
.pietrino-tabs {
  display: flex; border-bottom: 1px solid rgba(0,0,0,.07);
  overflow-x: auto; scrollbar-width: none;
}
.pietrino-tabs::-webkit-scrollbar { display: none; }
.pietrino-tab {
  padding: 11px 18px; font-size: 12px; font-weight: 500;
  cursor: pointer; border: none; border-bottom: 2px solid transparent;
  background: none; display: flex; align-items: center; gap: 5px;
  white-space: nowrap; transition: color .15s, border-color .15s;
  letter-spacing: .01em;
}
.pietrino-tab .dashicons { font-size: 14px; width: 14px; height: 14px; }
.pietrino-tab:focus-visible { outline: 2px solid currentColor; outline-offset: -2px; }

/* ---- BODY ---- */
.pietrino-body { padding: 18px 20px; }
.pietrino-panel { display: none; }
.pietrino-panel.active { display: block; animation: pietrino-fadein .2s ease; }
@keyframes pietrino-fadein { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

/* ---- MESSAGES ---- */
.pietrino-messages {
  min-height: 180px; max-height: 300px;
  overflow-y: auto; display: flex; flex-direction: column;
  gap: 10px; margin-bottom: 14px; padding-right: 2px;
  scroll-behavior: smooth;
}
.pietrino-messages::-webkit-scrollbar { width: 4px; }
.pietrino-messages::-webkit-scrollbar-track { background: transparent; }
.pietrino-messages::-webkit-scrollbar-thumb { border-radius: 4px; }

.pietrino-msg {
  max-width: 86%; padding: 10px 14px;
  border-radius: 14px; font-size: 13px; line-height: 1.6;
  animation: pietrino-msg-in .2s ease;
}
@keyframes pietrino-msg-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.pietrino-msg-user { align-self: flex-end; border-radius: 14px 14px 4px 14px; }
.pietrino-msg-ai   { align-self: flex-start; border-radius: 14px 14px 14px 4px; }
.pietrino-msg-thinking {
  align-self: flex-start; border-radius: 14px 14px 14px 4px;
  display: flex; align-items: center; gap: 8px;
  font-style: italic; font-size: 12px; opacity: .75;
}

/* ---- INPUT ---- */
.pietrino-input-area {
  display: flex; gap: 8px; align-items: flex-end;
  position: relative;
}
.pietrino-input {
  flex: 1; padding: 10px 14px;
  border-radius: 12px; font-size: 13px;
  font-family: inherit; resize: none;
  border: 1.5px solid; outline: none;
  transition: border-color .2s, box-shadow .2s;
  line-height: 1.5; max-height: 120px;
}
.pietrino-input:focus { box-shadow: 0 0 0 3px rgba(184,134,11,.15); }
.pietrino-send-btn {
  width: 40px; height: 40px; border-radius: 12px;
  border: none; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; transition: transform .15s, opacity .15s;
  box-shadow: 0 2px 8px rgba(0,0,0,.15);
}
.pietrino-send-btn:hover { transform: scale(1.06); }
.pietrino-send-btn:active { transform: scale(.96); }
.pietrino-send-btn .dashicons { font-size: 18px; width: 18px; height: 18px; }

/* ---- BUTTONS ---- */
.pietrino-btn-primary, .pietrino-btn-secondary {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 18px; border-radius: 10px;
  font-size: 12px; font-weight: 600; cursor: pointer;
  border: none; transition: transform .15s, opacity .15s;
  letter-spacing: .01em;
}
.pietrino-btn-primary:hover, .pietrino-btn-secondary:hover { opacity: .87; transform: translateY(-1px); }
.pietrino-btn-primary:active, .pietrino-btn-secondary:active { transform: translateY(0); }
.pietrino-new-session { font-size: 11px; padding: 6px 13px; }

/* ---- DISCLAIMER ---- */
.pietrino-disclaimer {
  font-size: 10px; line-height: 1.6;
  margin-top: 12px; opacity: .45; border-radius: 6px;
  padding: 8px 10px;
}

/* ---- AREAS GRID ---- */
.pietrino-areas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 8px; margin-bottom: 14px;
}
.pietrino-area-card {
  padding: 13px 11px; border-radius: 12px;
  border: 1.5px solid; cursor: pointer;
  transition: border-color .2s, background .2s, transform .15s;
  text-align: left;
}
.pietrino-area-card:hover { transform: translateY(-2px); }
.pietrino-area-card .dashicons { font-size: 20px; margin-bottom: 6px; display: block; }
.pietrino-area-name { font-size: 11px; font-weight: 600; margin-bottom: 2px; }
.pietrino-area-desc { font-size: 10px; opacity: .6; line-height: 1.3; }

/* ---- FORM ---- */
.pietrino-form-group { margin-bottom: 12px; }
.pietrino-form-group label {
  display: block; font-size: 11px; font-weight: 600;
  margin-bottom: 5px; opacity: .75; letter-spacing: .02em;
}
.pietrino-field {
  width: 100%; padding: 9px 13px;
  border-radius: 10px; border: 1.5px solid;
  font-size: 12px; font-family: inherit;
  resize: vertical; outline: none;
  transition: border-color .2s, box-shadow .2s;
  box-sizing: border-box; line-height: 1.5;
}
.pietrino-field:focus { box-shadow: 0 0 0 3px rgba(184,134,11,.12); }
select.pietrino-field { resize: none; cursor: pointer; }

/* ---- WIZARD ---- */
.pietrino-wizard-actions { display: flex; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.pietrino-wizard-step { display: none; }
.pietrino-wizard-step.active { display: block; animation: pietrino-fadein .2s ease; }
.pietrino-step-title { font-size: 14px; font-weight: 700; margin-bottom: 14px; letter-spacing: -.01em; }

/* ---- ANALYSIS ---- */
.pietrino-analysis-section {
  padding: 11px 14px; border-radius: 10px;
  border: 1.5px solid; margin-bottom: 8px;
  transition: transform .15s;
}
.pietrino-analysis-section:hover { transform: translateX(2px); }
.pietrino-analysis-label {
  font-size: 10px; text-transform: uppercase;
  letter-spacing: .08em; font-weight: 700; margin-bottom: 5px;
}
.pietrino-analysis-text { font-size: 12px; line-height: 1.65; }
.pietrino-section-highlight { border-left-width: 3px; border-left-style: solid; }
.pietrino-section-error { }
.pietrino-confidence {
  display: flex; align-items: center; gap: 6px;
  font-size: 11px; margin-top: 10px; opacity: .65;
}
.pietrino-conf-dot { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }

/* ---- UPLOAD ---- */
.pietrino-upload-area {
  border: 2px dashed; border-radius: 14px;
  padding: 28px 20px; text-align: center;
  cursor: pointer; transition: border-color .2s, background .2s;
  margin-bottom: 12px;
}
.pietrino-upload-area.dragover { transform: scale(1.01); }
.pietrino-upload-area .dashicons { font-size: 36px; width: 36px; height: 36px; opacity: .35; display: block; margin: 0 auto 10px; }
.pietrino-upload-title { font-size: 13px; font-weight: 600; margin-bottom: 4px; }
.pietrino-upload-subtitle { font-size: 11px; opacity: .6; margin-bottom: 14px; }
.pietrino-preview-info {
  display: flex; gap: 10px; align-items: center;
  padding: 9px 13px; border-radius: 10px; border: 1.5px solid;
  margin-bottom: 10px; font-size: 11px; flex-wrap: wrap;
}
.pietrino-preview-name { font-weight: 600; flex: 1; }
.pietrino-preview-size, .pietrino-preview-expires { opacity: .6; }
.pietrino-privacy-note {
  display: flex; align-items: flex-start; gap: 6px;
  font-size: 10px; opacity: .5; line-height: 1.5; margin-top: 12px;
}
.pietrino-privacy-note .dashicons { font-size: 12px; width: 12px; height: 12px; margin-top: 1px; flex-shrink: 0; }

/* ---- SESSIONS ---- */
.pietrino-sessions-list { display: flex; flex-direction: column; gap: 6px; max-height: 320px; overflow-y: auto; }
.pietrino-sessions-list::-webkit-scrollbar { width: 4px; }
.pietrino-session-row {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 13px; border-radius: 10px;
  border: 1.5px solid; transition: border-color .2s, transform .15s;
}
.pietrino-session-row:hover { transform: translateX(2px); }
.pietrino-session-title { font-size: 12px; font-weight: 600; margin-bottom: 2px; }
.pietrino-session-meta { font-size: 10px; opacity: .55; }
.pietrino-session-actions { display: flex; gap: 4px; flex-shrink: 0; }
.pietrino-sess-keep, .pietrino-sess-del {
  background: none; border: none; cursor: pointer;
  font-size: 15px; padding: 4px 6px; border-radius: 7px;
  line-height: 1; opacity: .5; transition: opacity .15s, background .15s;
}
.pietrino-sess-keep:hover, .pietrino-sess-del:hover { opacity: 1; }

/* ---- STUDIO ---- */
.pietrino-studio-intro {
  padding: 12px 14px; border-radius: 10px;
  font-size: 12px; line-height: 1.6;
  margin-bottom: 14px; border: 1.5px solid;
}

/* ---- LOADING ---- */
.pietrino-loading {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 0; font-size: 12px; opacity: .65;
}
.pietrino-spinner {
  width: 20px; height: 20px; flex-shrink: 0;
  border: 2px solid rgba(184,134,11,.2);
  border-top-color: #B8860B;
  border-radius: 50%;
  animation: pietrino-spin .7s linear infinite;
}
.pietrino-spinner-small {
  width: 13px; height: 13px; flex-shrink: 0;
  border: 2px solid rgba(0,0,0,.12);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: pietrino-spin .7s linear infinite;
}
@keyframes pietrino-spin { to { transform: rotate(360deg); } }
.pietrino-error { font-size: 12px; color: #c0392b; }

/* ---- ACCESS ---- */
.pietrino-login-required, .pietrino-no-access {
  padding: 24px 20px; text-align: center;
  border-radius: 14px; font-size: 13px; border: 1.5px solid;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 600px) {
  .pietrino-widget { border-radius: 12px; margin: 1rem 0; }
  .pietrino-body { padding: 14px 15px; }
  .pietrino-header { padding: 12px 15px; }
  .pietrino-tab { padding: 10px 13px; font-size: 11px; }
  .pietrino-areas-grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); gap: 6px; }
  .pietrino-msg { max-width: 92%; font-size: 12px; }
  .pietrino-messages { max-height: 240px; }
  .pietrino-analysis-section:hover { transform: none; }
  .pietrino-session-row:hover { transform: none; }
  .pietrino-area-card:hover { transform: none; }
}

@media (max-width: 400px) {
  .pietrino-areas-grid { grid-template-columns: repeat(2, 1fr); }
  .pietrino-btn-primary, .pietrino-btn-secondary { padding: 9px 14px; }
}