/* ========================================================================
   AI Writing Feedback — Grammarly-style review modal
   ======================================================================== */

/* The floating launch button has been retired — the AI Writing Feedback
   modal is now reached from inside the AI Recommendations panel that opens
   after submission. The original styles below are kept for reference, but
   the rule directly after this comment hides the button site-wide. */
.ai-feedback-launch,
.ai-launch-badge { display: none !important; }

/* (Disabled by the rule above.) Launch button (visible only in review mode) */
.ai-feedback-launch--disabled {
  position: fixed;
  right: 18px;
  bottom: 78px;
  z-index: 60;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid #6d2f5a;
  border-radius: 999px;
  background: linear-gradient(135deg, #9a457f, #6d2f5a);
  color: #fff;
  font: 700 0.92rem/1 'Segoe UI', Tahoma, Verdana, sans-serif;
  letter-spacing: 0.02em;
  cursor: pointer;
  box-shadow: 0 12px 22px rgba(112, 49, 93, 0.28);
  transition: transform .18s ease, box-shadow .18s ease, filter .18s ease;
}
.ai-feedback-launch:hover { transform: translateY(-1px); filter: brightness(1.06); box-shadow: 0 16px 28px rgba(112, 49, 93, 0.34); }
.ai-feedback-launch:active { transform: translateY(0); }

/* Modal scaffolding */
.ai-feedback-modal {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(13, 8, 18, 0.65);
  backdrop-filter: blur(4px);
  z-index: 200;
  padding: 14px;
}
.ai-feedback-modal.is-open { display: flex; }
.ai-feedback-shell {
  width: min(1320px, 100%);
  height: min(94vh, 920px);
  background: #14101a;
  color: #e7e3ee;
  border-radius: 16px;
  border: 1px solid #2a2235;
  box-shadow: 0 38px 70px rgba(0, 0, 0, 0.5);
  display: grid;
  grid-template-rows: auto 1fr auto;
  overflow: hidden;
  font-family: 'Segoe UI', Tahoma, Verdana, sans-serif;
}

/* Header */
.ai-shell-head {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 18px;
  padding: 14px 20px;
  background: linear-gradient(180deg, #1c1626, #14101a);
  border-bottom: 1px solid #2a2235;
}
.ai-shell-eyebrow {
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #9b8eae;
  font-weight: 700;
}
.ai-doc-title {
  margin-top: 2px;
  font-size: 1.06rem;
  font-weight: 700;
  color: #f3eef9;
}
.ai-task-switcher {
  display: inline-flex;
  background: #1e1828;
  border: 1px solid #2e2540;
  border-radius: 999px;
  padding: 3px;
}
.ai-task-tab {
  appearance: none;
  border: 0;
  background: transparent;
  color: #b8aecb;
  padding: 7px 16px;
  font-weight: 700;
  font-size: 0.86rem;
  border-radius: 999px;
  cursor: pointer;
  letter-spacing: 0.02em;
}
.ai-task-tab.is-active {
  background: linear-gradient(135deg, #6a3aa4, #4d2e87);
  color: #fff;
  box-shadow: 0 4px 12px rgba(106, 58, 164, 0.45);
}
.ai-task-tab:hover:not(.is-active) { color: #f3eef9; }
.ai-shell-close {
  appearance: none;
  background: #251c33;
  color: #d8cfe6;
  border: 1px solid #382a4d;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
}
.ai-shell-close:hover { background: #2e2342; color: #fff; }

/* Main area */
.ai-shell-main {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
  gap: 0;
  min-height: 0;
  background: #14101a;
}

/* Document panel */
.ai-doc-panel {
  border-right: 1px solid #2a2235;
  overflow-y: auto;
  background:
    linear-gradient(180deg, #15101e, #110c1a);
  padding: 22px 28px 32px;
}
.ai-doc-body {
  max-width: 760px;
  margin: 0 auto;
  color: #e7e3ee;
  font-family: 'Georgia', 'Cambria', serif;
  font-size: 1.04rem;
  line-height: 1.7;
}
.ai-doc-body p { margin: 0 0 1.05em; }

/* Inline issue marks */
.ai-mark {
  cursor: pointer;
  background-image: none;
  background-repeat: no-repeat;
  background-size: 100% 100%;
  text-decoration-skip-ink: none;
  text-underline-offset: 4px;
  text-decoration-thickness: 2px;
  padding-bottom: 1px;
  border-radius: 2px;
  position: relative;
  transition: background-color .15s ease, color .15s ease;
}
.ai-mark-grammar    { color: #ff6b6b; text-decoration: underline wavy #ff4d4d; background-color: rgba(255, 77, 77, 0.10); }
.ai-mark-mechanics  { color: #ffc266; text-decoration: underline wavy #f0a93a; background-color: rgba(240, 169, 58, 0.10); }
.ai-mark-style      { color: #7ec0ff; text-decoration: underline wavy #4aa3f0; background-color: rgba(74, 163, 240, 0.10); }
.ai-mark:hover {
  filter: brightness(1.15);
  background-color: rgba(255, 255, 255, 0.08);
}

/* Engine status row */
.ai-engine-status {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0 18px 8px;
}
.ai-engine-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.74rem;
  font-weight: 700;
  background: #1a1424;
  border: 1px solid #2e2540;
  color: #d8cfe6;
  letter-spacing: 0.01em;
}
.ai-engine-pill.is-ok    { border-color: #2bb673; color: #6bd9a4; }
.ai-engine-pill.is-fail  { border-color: #c33a4a; color: #f08c95; opacity: 0.85; }
.ai-engine-pill::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: #6a3aa4;
}
.ai-engine-pill.is-ok::before    { background: #2bb673; box-shadow: 0 0 0 2px rgba(43, 182, 115, 0.18); }
.ai-engine-pill.is-fail::before  { background: #c33a4a; box-shadow: 0 0 0 2px rgba(195, 58, 74, 0.18); }
.ai-engine-name { font-weight: 800; }
.ai-engine-count {
  color: #b8aecb;
  font-weight: 700;
}
.ai-engine-pill.is-ok .ai-engine-count { color: #6bd9a4; }
.ai-engine-count.ai-engine-fail { color: #f08c95; text-transform: uppercase; font-size: 0.66rem; letter-spacing: 0.06em; }

/* Launch button count badge */
.ai-launch-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 7px;
  margin-left: 6px;
  border-radius: 999px;
  background: #ff4d4d;
  color: #fff;
  font-size: 0.74rem;
  font-weight: 800;
  line-height: 1;
  box-shadow: 0 2px 6px rgba(255, 77, 77, 0.45);
}

/* Side panel */
.ai-side-panel {
  display: grid;
  grid-template-rows: auto auto 1fr;
  min-height: 0;
  background: #110c1a;
}
.ai-side-tabs {
  display: flex;
  gap: 18px;
  align-items: center;
  padding: 12px 18px 0;
  border-bottom: 1px solid #2a2235;
}
.ai-side-tab {
  appearance: none;
  background: transparent;
  border: 0;
  color: #9b8eae;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 10px 2px 12px;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.ai-side-tab .ai-tab-count {
  background: #251c33;
  color: #d8cfe6;
  font-size: 0.72rem;
  padding: 2px 7px;
  border-radius: 999px;
  font-weight: 800;
}
.ai-side-tab.is-active {
  color: #f3eef9;
  border-bottom-color: #6a3aa4;
}
.ai-side-tab.is-active .ai-tab-count {
  background: linear-gradient(135deg, #6a3aa4, #4d2e87);
  color: #fff;
}
.ai-suggestion-headline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 18px 8px;
}
.ai-suggestion-headline-count {
  font-size: 0.84rem;
  color: #b8aecb;
  font-weight: 700;
}
.ai-btn-accept-all {
  appearance: none;
  border: 1px solid #2bb673;
  background: rgba(43, 182, 115, 0.12);
  color: #6bd9a4;
  font-weight: 800;
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  padding: 7px 14px;
  border-radius: 999px;
  cursor: pointer;
}
.ai-btn-accept-all:hover:not(:disabled) { background: rgba(43, 182, 115, 0.2); color: #fff; }
.ai-btn-accept-all:disabled { opacity: 0.45; cursor: not-allowed; }

.ai-cards-list {
  overflow-y: auto;
  padding: 6px 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* Cards */
.ai-card {
  background: #1a1424;
  border: 1px solid #2a2235;
  border-left: 4px solid #4a3a6c;
  border-radius: 10px;
  padding: 12px 14px 10px;
  transition: box-shadow .2s ease, border-color .2s ease;
}
.ai-card.is-focused {
  box-shadow: 0 0 0 2px #6a3aa4, 0 8px 18px rgba(106, 58, 164, 0.35);
  border-color: #6a3aa4;
}
.ai-card-grammar    { border-left-color: #f04a4a; }
.ai-card-mechanics  { border-left-color: #f0a93a; }
.ai-card-style      { border-left-color: #4aa3f0; }
.ai-card-head {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}
.ai-card-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #6a3aa4;
}
.ai-dot-grammar    { background: #f04a4a; }
.ai-dot-mechanics  { background: #f0a93a; }
.ai-dot-style      { background: #4aa3f0; }
.ai-card-rule {
  font-size: 0.78rem;
  font-weight: 800;
  color: #d8cfe6;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.ai-card-diff {
  font-size: 0.95rem;
  font-family: 'Georgia', serif;
  color: #e7e3ee;
  line-height: 1.45;
  word-break: break-word;
}
.ai-diff-strike {
  color: #f37c7c;
  text-decoration: line-through;
  text-decoration-color: #f04a4a;
}
.ai-diff-add {
  color: #7cd6a3;
  font-weight: 700;
}
.ai-card-message {
  margin-top: 6px;
  font-size: 0.78rem;
  color: #9b8eae;
  line-height: 1.4;
}
.ai-card-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}
.ai-btn {
  appearance: none;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 800;
  font-size: 0.8rem;
  padding: 6px 14px;
  cursor: pointer;
  letter-spacing: 0.02em;
}
.ai-btn-accept {
  background: linear-gradient(135deg, #2bb673, #1f8a57);
  color: #fff;
  border-color: #1f8a57;
}
.ai-btn-accept:hover { filter: brightness(1.06); }
.ai-btn-ignore {
  background: transparent;
  color: #b8aecb;
  border-color: #2e2540;
}
.ai-btn-ignore:hover { background: #1f1730; color: #fff; }
.ai-card-src {
  margin-left: auto;
  font-size: 0.66rem;
  color: #7c7090;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Recommendation cards (grammar topics to revise) */
.ai-rec-card {
  background: linear-gradient(180deg, rgba(106, 58, 164, 0.16), rgba(106, 58, 164, 0.04));
  border: 1px solid #4d2e87;
  border-left: 4px solid #9269d0;
  border-radius: 10px;
  padding: 14px 16px 12px;
}
.ai-rec-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.ai-rec-badge {
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #1d0e35;
  background: linear-gradient(135deg, #f3c474, #f0a93a);
  padding: 4px 10px;
  border-radius: 999px;
}
.ai-rec-topic {
  font-weight: 800;
  color: #f3eef9;
  font-size: 1rem;
  flex: 1;
  min-width: 0;
}
.ai-rec-count {
  font-size: 0.72rem;
  font-weight: 800;
  color: #d8cfe6;
  background: #2a1f3d;
  border: 1px solid #4a3a6c;
  padding: 3px 9px;
  border-radius: 999px;
  letter-spacing: 0.02em;
}
.ai-rec-tip {
  font-size: 0.9rem;
  color: #e7e3ee;
  line-height: 1.5;
}
.ai-rec-examples-title,
.ai-rec-study-title {
  margin-top: 10px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #b8aecb;
}
.ai-rec-examples,
.ai-rec-study {
  margin: 4px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 4px;
}
.ai-rec-examples li {
  font-family: 'Georgia', serif;
  font-size: 0.88rem;
  color: #e7e3ee;
  line-height: 1.5;
  word-break: break-word;
}
.ai-rec-study li {
  font-size: 0.84rem;
  color: #d8cfe6;
  line-height: 1.45;
}
.ai-rec-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 10px;
}

/* Empty / loading / error */
.ai-empty {
  padding: 36px 16px;
  text-align: center;
  color: #9b8eae;
  font-style: italic;
}
.ai-empty-task {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 50px 28px;
  max-width: 560px;
  margin: 30px auto;
  border: 1px dashed #4d3a6f;
  border-radius: 16px;
  background: linear-gradient(165deg, #1a1428, #14101e);
  text-align: center;
}
.ai-empty-task-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #d23b3b, #a02b2b);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 800;
  box-shadow: 0 6px 16px rgba(210, 59, 59, 0.32);
}
.ai-empty-task-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #f3eef9;
}
.ai-empty-task-body {
  font-size: 0.92rem;
  line-height: 1.6;
  color: #c8bedb;
  max-width: 480px;
}
.ai-empty-task-body strong { color: #f3eef9; }
.ai-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 80px 0;
  color: #d8cfe6;
}
.ai-spinner {
  width: 36px; height: 36px;
  border: 3px solid #2e2540;
  border-top-color: #9269d0;
  border-radius: 50%;
  animation: aiSpin 1s linear infinite;
}
@keyframes aiSpin { to { transform: rotate(360deg); } }
.ai-error {
  margin: 30px 0;
  padding: 16px;
  background: #2b1318;
  border: 1px solid #5a2a2a;
  border-radius: 10px;
  color: #f7a8a8;
}

/* Footer — IELTS band card */
.ai-shell-foot {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: stretch;
  padding: 14px 18px;
  background: #1a1424;
  border-top: 1px solid #2a2235;
}
.ai-band-card {
  display: grid;
  grid-template-columns: minmax(150px, 180px) 1fr;
  gap: 16px;
  align-items: stretch;
}

/* Big "Overall Band" tile */
.ai-band-overall {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px 14px;
  border-radius: 14px;
  background: linear-gradient(160deg, #1f1730, #160f23);
  border: 1px solid #2e2540;
  position: relative;
  overflow: hidden;
}
.ai-band-overall::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(120% 80% at 50% -20%, rgba(106, 58, 164, 0.5), transparent 60%);
  pointer-events: none;
}
.ai-band-overall-eyebrow {
  font-size: 0.66rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #b8aecb;
  text-align: center;
  position: relative;
  z-index: 1;
}
.ai-band-overall-val {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1;
  margin-top: 4px;
  color: #f3eef9;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
  position: relative;
  z-index: 1;
}
.ai-band-overall-scale {
  font-size: 0.78rem;
  font-weight: 700;
  color: #9b8eae;
  margin-top: 2px;
  position: relative;
  z-index: 1;
}

.ai-band-overall.is-high      { border-color: #2bb673; }
.ai-band-overall.is-high .ai-band-overall-val      { color: #82e6b4; }
.ai-band-overall.is-mid       { border-color: #f0a93a; }
.ai-band-overall.is-mid .ai-band-overall-val       { color: #f3c474; }
.ai-band-overall.is-low       { border-color: #ef6c4a; }
.ai-band-overall.is-low .ai-band-overall-val       { color: #f0936f; }
.ai-band-overall.is-very-low  { border-color: #d23b3b; }
.ai-band-overall.is-very-low .ai-band-overall-val  { color: #ef7373; }
.ai-band-overall.is-empty {
  border-color: #6b7280;
  background: linear-gradient(160deg, #1c1830, #14101e);
  filter: grayscale(0.4);
}
.ai-band-overall.is-empty .ai-band-overall-val { color: #b8aecb; }

/* 4 sub-criterion cards */
.ai-bands {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}
.ai-band {
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: 4px;
  padding: 10px 12px;
  border-radius: 12px;
  background: #1d1629;
  border: 1px solid #2a2235;
  border-left-width: 4px;
  border-left-color: #6a3aa4;
  min-width: 0;
}
.ai-band.is-high      { border-left-color: #2bb673; }
.ai-band.is-mid       { border-left-color: #f0a93a; }
.ai-band.is-low       { border-left-color: #ef6c4a; }
.ai-band.is-very-low  { border-left-color: #d23b3b; }
.ai-band.is-empty     { border-left-color: #6b7280; filter: grayscale(0.35); opacity: 0.85; }
.ai-band.is-empty .ai-band-tag { background: rgba(107, 114, 128, 0.22); color: #c8c8d4; }

.ai-band-head {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.ai-band-tag {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  padding: 2px 6px;
  border-radius: 4px;
  background: #2e2540;
  color: #d8cfe6;
  flex: 0 0 auto;
}
.ai-band.is-high     .ai-band-tag { background: rgba(43, 182, 115, 0.18); color: #82e6b4; }
.ai-band.is-mid      .ai-band-tag { background: rgba(240, 169, 58, 0.18); color: #f3c474; }
.ai-band.is-low      .ai-band-tag { background: rgba(239, 108, 74, 0.18); color: #f0936f; }
.ai-band.is-very-low .ai-band-tag { background: rgba(210, 59, 59, 0.18); color: #ef7373; }

.ai-band-label {
  font-size: 0.7rem;
  font-weight: 700;
  color: #d8cfe6;
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}
.ai-band-val {
  font-size: 1.4rem;
  font-weight: 800;
  color: #f3eef9;
  line-height: 1.1;
}
.ai-band-note {
  font-size: 0.7rem;
  color: #b8aecb;
  line-height: 1.3;
}

/* Span across both columns of the band-card grid */
.ai-band-disclaimer {
  grid-column: 1 / -1;
  font-size: 0.7rem;
  color: #9b8eae;
  background: #16101f;
  border: 1px dashed #2a2235;
  border-radius: 8px;
  padding: 8px 10px;
  display: flex;
  align-items: center;
  gap: 6px;
  line-height: 1.35;
}
.ai-band-disclaimer i { color: #9a87c2; }

.ai-foot-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.ai-foot-toggle {
  font-size: 0.78rem;
  color: #b8aecb;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.ai-foot-btn {
  appearance: none;
  border: 1px solid #2e2540;
  background: #1f1730;
  color: #e7e3ee;
  font-weight: 700;
  padding: 7px 12px;
  border-radius: 999px;
  font-size: 0.8rem;
  cursor: pointer;
}
.ai-foot-btn:hover { background: #2a2042; }
.ai-foot-btn-primary {
  background: linear-gradient(135deg, #6a3aa4, #4d2e87);
  border-color: #4d2e87;
  color: #fff;
}
.ai-foot-btn-primary:hover { filter: brightness(1.06); }

/* Responsive collapse */
@media (max-width: 1080px) {
  .ai-shell-main { grid-template-columns: 1fr; grid-template-rows: minmax(220px, 38vh) 1fr; }
  .ai-doc-panel  { border-right: 0; border-bottom: 1px solid #2a2235; }
}
@media (max-width: 960px) {
  .ai-band-card { grid-template-columns: 1fr; }
  .ai-band-overall { flex-direction: row; gap: 12px; padding: 10px 14px; }
  .ai-band-overall-eyebrow { writing-mode: horizontal-tb; }
  .ai-band-overall-val { font-size: 1.8rem; }
}
@media (max-width: 760px) {
  .ai-shell-head { grid-template-columns: 1fr auto; row-gap: 8px; }
  .ai-task-switcher { grid-column: 1 / -1; justify-self: start; }
  .ai-shell-foot { grid-template-columns: 1fr; }
  .ai-bands { grid-template-columns: repeat(2, 1fr); }
  .ai-foot-actions { justify-content: flex-end; flex-wrap: wrap; }
}