:root {
  --mfla-bg: #f6f8fb;
  --mfla-card: #ffffff;
  --mfla-primary: #2563eb;
  --mfla-primary-dark: #1d4ed8;
  --mfla-soft: #e0e7ff;
  --mfla-text: #172033;
  --mfla-muted: #64748b;
  --mfla-success: #16a34a;
  --mfla-warning: #ca8a04;
  --mfla-danger: #dc2626;
  --mfla-radius: 22px;
}

.mfla-app,
.mfla-avatar-editor {
  min-height: 100vh;
  background: radial-gradient(circle at top left, #dbeafe 0, transparent 32%), var(--mfla-bg);
  color: var(--mfla-text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.mfla-app * , .mfla-avatar-editor * { box-sizing: border-box; }

.mfla-app {
  display: grid;
  grid-template-columns: 310px 1fr;
}

.mfla-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  padding: 28px 22px;
  background: #0f172a;
  color: #fff;
  box-shadow: 8px 0 28px rgba(15, 23, 42, .16);
}

.mfla-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, .16);
  font-weight: 800;
  letter-spacing: .02em;
}

.mfla-sidebar h1,
.mfla-board-header h2,
.mfla-avatar-card h1 {
  margin: 0 0 8px;
  line-height: 1.05;
}

.mfla-help,
.mfla-board-header p,
.mfla-avatar-card p {
  color: #cbd5e1;
  margin-top: 0;
}

.mfla-main {
  padding: 30px;
}

.mfla-board-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}

.mfla-board-header p { color: var(--mfla-muted); }

.mfla-field {
  display: grid;
  gap: 7px;
  margin: 16px 0;
  font-weight: 700;
}

.mfla-field span { font-size: .92rem; }

.mfla-field input,
.mfla-field select {
  width: 100%;
  border: 2px solid rgba(148, 163, 184, .55);
  border-radius: 14px;
  padding: 13px 14px;
  font-size: 1rem;
  background: #fff;
  color: var(--mfla-text);
  outline: none;
}

.mfla-field input:focus,
.mfla-field select:focus {
  border-color: #60a5fa;
  box-shadow: 0 0 0 4px rgba(96, 165, 250, .22);
}

.mfla-letters {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 18px 0;
}

.mfla-letters button,
.mfla-soft-btn,
.mfla-primary-btn {
  border: 0;
  border-radius: 13px;
  padding: 10px 13px;
  font-weight: 800;
  cursor: pointer;
}

.mfla-letters button {
  background: rgba(255, 255, 255, .12);
  color: #fff;
}

.mfla-letters button.active,
.mfla-letters button:hover {
  background: #fff;
  color: #0f172a;
}

.mfla-session-box {
  margin: 18px 0;
  padding: 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, .1);
  color: #fff;
}

.mfla-session-box.active { background: rgba(22, 163, 74, .22); }
.mfla-session-box.inactive { background: rgba(220, 38, 38, .20); }

.mfla-google-side,
.mfla-avatar-link,
.mfla-google-card,
.mfla-copy-pass {
  text-decoration: none !important;
  text-align: center;
}

.mfla-google-side {
  display: block;
  width: 100%;
  margin-top: 16px;
  padding: 15px;
  border-radius: 16px;
  background: #fff;
  color: #111827;
  font-weight: 900;
}

.mfla-google-side::before,
.mfla-google-card::before {
  content: "G";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  margin-right: 8px;
  border-radius: 50%;
  color: #4285f4;
  background: #fff;
  font-weight: 900;
}

.mfla-avatar-link {
  display: block;
  margin-top: 12px;
  color: #bfdbfe;
  font-weight: 700;
}

.mfla-message {
  margin: 16px 0;
  padding: 14px 16px;
  border-radius: 16px;
  font-weight: 750;
}

.mfla-message-info { background: #dbeafe; color: #1e3a8a; }
.mfla-message-success { background: #dcfce7; color: #166534; }
.mfla-message-warning { background: #fef3c7; color: #92400e; }
.mfla-message-error { background: #fee2e2; color: #991b1b; }

.mfla-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(155px, 1fr));
  gap: 18px;
  align-items: start;
}

.mfla-student-card {
  background: var(--mfla-card);
  border-radius: var(--mfla-radius);
  padding: 14px;
  border: 3px solid transparent;
  box-shadow: 0 10px 26px rgba(15, 23, 42, .08);
  transition: transform .15s ease, border-color .15s ease, box-shadow .15s ease;
}

.mfla-student-card:hover,
.mfla-student-card.selected {
  transform: translateY(-2px);
  border-color: var(--mfla-primary);
  box-shadow: 0 16px 30px rgba(37, 99, 235, .14);
}

.mfla-student-main {
  width: 100%;
  border: 0;
  background: transparent;
  cursor: pointer;
  color: var(--mfla-text);
  display: grid;
  justify-items: center;
  gap: 10px;
  padding: 4px;
}

.mfla-student-main strong {
  font-size: 1.05rem;
  text-align: center;
}

.mfla-student-main small {
  color: var(--mfla-muted);
  font-weight: 700;
}

.mfla-avatar-emoji {
  position: relative;
  width: 92px;
  height: 92px;
  border-radius: 28px;
  display: grid;
  place-items: center;
  box-shadow: inset 0 0 0 4px rgba(255,255,255,.55), 0 12px 22px rgba(15, 23, 42, .12);
}

.mfla-avatar-base {
  font-size: 3.4rem;
  line-height: 1;
}

.mfla-avatar-overlay {
  position: absolute;
  right: -6px;
  bottom: -5px;
  font-size: 1.8rem;
  filter: drop-shadow(0 4px 5px rgba(0,0,0,.16));
}

.mfla-avatar-img {
  width: 92px;
  height: 92px;
  object-fit: cover;
  border-radius: 28px;
  box-shadow: 0 12px 22px rgba(15, 23, 42, .12);
}

.mfla-action-bar {
  margin-top: 12px;
  display: grid;
  gap: 9px;
}

.mfla-copy-pass,
.mfla-google-card {
  display: block;
  width: 100%;
  padding: 12px 10px;
  border-radius: 14px;
  font-weight: 900;
  cursor: pointer;
}

.mfla-copy-pass {
  border: 0;
  background: #f97316;
  color: #fff;
}

.mfla-google-card {
  background: var(--mfla-primary);
  color: #fff !important;
}

.mfla-action-bar p {
  margin: 0;
  font-size: .86rem;
  color: var(--mfla-muted);
  text-align: center;
}

.mfla-soft-btn {
  background: var(--mfla-soft);
  color: #312e81;
}

.mfla-primary-btn {
  background: var(--mfla-primary);
  color: #fff;
}

.mfla-empty {
  grid-column: 1 / -1;
  background: #fff;
  border-radius: var(--mfla-radius);
  padding: 36px;
  color: var(--mfla-muted);
  text-align: center;
  font-weight: 800;
}

/* Avatar editor */
.mfla-avatar-editor {
  padding: 30px;
  display: grid;
  place-items: center;
}

.mfla-avatar-card {
  width: min(1050px, 100%);
  background: #fff;
  border-radius: 30px;
  padding: 28px;
  box-shadow: 0 18px 50px rgba(15, 23, 42, .13);
}

.mfla-avatar-card .mfla-logo {
  background: #eff6ff;
  color: #1d4ed8;
}

.mfla-avatar-card p { color: var(--mfla-muted); }

.mfla-avatar-layout {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(260px, .8fr);
  gap: 24px;
  align-items: center;
}

.mfla-picker-block {
  margin: 18px 0;
}

.mfla-picker-block strong {
  display: block;
  margin-bottom: 9px;
}

.mfla-picker-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mfla-picker-row button {
  min-width: 44px;
  height: 44px;
  border: 2px solid #cbd5e1;
  border-radius: 14px;
  background: #fff;
  font-size: 1.35rem;
  cursor: pointer;
}

.mfla-picker-row button.active {
  border-color: var(--mfla-primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, .13);
}

.mfla-avatar-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0;
}

.mfla-avatar-preview-panel {
  display: grid;
  justify-items: center;
  gap: 15px;
  padding: 28px;
  background: #f8fafc;
  border-radius: 28px;
}

.mfla-big-avatar .mfla-avatar-emoji {
  width: 190px;
  height: 190px;
  border-radius: 54px;
}

.mfla-big-avatar .mfla-avatar-base { font-size: 7rem; }
.mfla-big-avatar .mfla-avatar-overlay { font-size: 3.3rem; }
#mfla-avatar-preview-name { font-weight: 900; font-size: 1.2rem; }

@media (max-width: 850px) {
  .mfla-app { grid-template-columns: 1fr; }
  .mfla-sidebar { position: relative; height: auto; }
  .mfla-main { padding: 18px; }
  .mfla-board-header { flex-direction: column; }
  .mfla-avatar-layout { grid-template-columns: 1fr; }
}

/* Perfil de estudiante para páginas internas */
.mfla-student-profile {
  --mfla-profile-bg: #ffffff;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: center;
  max-width: 760px;
  padding: 20px;
  border-radius: 26px;
  background: linear-gradient(135deg, #ffffff 0%, #eff6ff 100%);
  color: var(--mfla-text);
  box-shadow: 0 12px 34px rgba(15, 23, 42, .10);
  border: 1px solid rgba(148, 163, 184, .22);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.mfla-student-profile * { box-sizing: border-box; }

.mfla-student-profile-empty {
  display: block;
  background: #fff7ed;
  color: #92400e;
  font-weight: 800;
}

.mfla-student-profile-empty p { margin: 0; }

.mfla-student-profile-avatar {
  display: grid;
  place-items: center;
}

.mfla-profile-avatar-emoji,
.mfla-profile-avatar-img {
  width: 118px;
  height: 118px;
  border-radius: 34px;
}

.mfla-profile-avatar-emoji .mfla-avatar-base { font-size: 4.4rem; }
.mfla-profile-avatar-emoji .mfla-avatar-overlay { font-size: 2.25rem; }

.mfla-student-profile-kicker {
  margin: 0 0 4px;
  color: var(--mfla-primary-dark);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .05em;
  font-size: .78rem;
}

.mfla-student-profile h3 {
  margin: 0 0 12px;
  font-size: clamp(1.25rem, 2.8vw, 1.75rem);
  line-height: 1.1;
}

.mfla-student-profile dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 0 0 16px;
}

.mfla-student-profile dl div {
  padding: 12px;
  border-radius: 16px;
  background: rgba(255,255,255,.72);
  border: 1px solid rgba(148, 163, 184, .22);
}

.mfla-student-profile dt {
  margin: 0 0 4px;
  color: var(--mfla-muted);
  font-weight: 800;
  font-size: .82rem;
}

.mfla-student-profile dd {
  margin: 0;
  color: var(--mfla-text);
  font-weight: 900;
  font-size: 1.05rem;
}

.mfla-student-profile-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 16px;
  border-radius: 16px;
  background: var(--mfla-primary);
  color: #fff !important;
  text-decoration: none !important;
  font-weight: 900;
  box-shadow: 0 10px 20px rgba(37, 99, 235, .18);
}

.mfla-student-profile-button:hover {
  background: var(--mfla-primary-dark);
}

.mfla-student-profile-note {
  margin: 0 0 14px;
  padding: 10px 12px;
  border-radius: 14px;
  background: #fef3c7;
  color: #92400e;
  font-weight: 750;
}

.mfla-field-note {
  color: var(--mfla-muted);
  font-weight: 650;
  font-size: .86rem;
  line-height: 1.35;
}

@media (max-width: 620px) {
  .mfla-student-profile {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .mfla-student-profile dl {
    grid-template-columns: 1fr;
  }
}