/* =====================================================================
   IvyBridge · Diagnostic wizard page styles
   ===================================================================== */

/* ── Page header (dark ivy) ── */
.diag-header {
  background: var(--ivy-deep);
  color: var(--paper);
  padding: 72px 0 52px;
  border-bottom: 1px solid rgba(168,124,52,0.25);
}
.diag-header .eyebrow { color: var(--gold-soft); }
.diag-header h1 {
  color: var(--paper);
  font-size: clamp(40px, 5.5vw, 80px);
  margin-top: 14px;
}
.diag-header h1 em { color: var(--gold-soft); font-style: italic; }
.diag-header .lede { color: var(--cream); margin-top: 16px; max-width: 620px; font-size: 17px; line-height: 1.65; }
.diag-header-meta {
  display: flex;
  gap: 28px;
  margin-top: 24px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold-soft);
  text-transform: uppercase;
}
.diag-header-meta span::before { content: "· "; }
.diag-header-meta span:first-child::before { content: ""; }

/* ── Stepper bar ── */
.diag-stepper-wrap {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
  margin-bottom: 0;
}
.diag-stepper-wrap .stepper { margin-bottom: 0; }

/* ── Wizard panels ── */
.diag-panels { padding: 48px 0 96px; }
.diag-panel { display: none; }
.diag-panel.is-active { display: block; }

/* ── Step shell ── */
.diag-shell { margin-top: 8px; }
.diag-shell-head { margin-bottom: 8px; }
.diag-step-num {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
}
.diag-shell h2 { font-size: clamp(32px, 4vw, 52px); margin-top: 10px; }
.diag-shell-sub { color: var(--muted); margin-top: 8px; font-size: 15px; }

.diag-shell-footer {
  margin-top: 44px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ── Field label ── */
.diag-field-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-2);
  opacity: 0.65;
  margin-bottom: 10px;
  display: block;
}

/* ── Chip / pill buttons ── */
.diag-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.diag-chip {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  padding: 8px 16px;
  font-family: var(--serif-display);
  font-size: 15px;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.12s, border-color 0.12s, color 0.12s;
}
.diag-chip:hover { border-color: var(--ivy); }
.diag-chip.is-active {
  background: var(--ivy);
  color: var(--paper);
  border-color: var(--ivy);
}

/* ── Step 0 Intro layout ── */
.diag-intro-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 56px;
  align-items: start;
  margin-top: 32px;
}
.diag-intro-list { display: flex; flex-direction: column; }
.diag-intro-item {
  display: grid;
  grid-template-columns: 1fr 80px;
  gap: 16px;
  align-items: center;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.diag-intro-item-title { font-family: var(--serif-display); font-size: 19px; color: var(--ink); }
.diag-intro-item-sub { font-size: 13px; color: var(--muted); margin-top: 3px; }
.diag-intro-item-time {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--gold);
  text-align: right;
}
.diag-intro-aside {
  position: sticky;
  top: 100px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  padding: 28px;
  border-radius: 4px;
}
.diag-intro-aside-list { display: flex; flex-direction: column; gap: 10px; margin-top: 18px; }
.diag-intro-aside-item {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14px;
  color: var(--ink-2);
}
.diag-intro-aside-item .plus { color: var(--gold); font-family: var(--mono); margin-top: 2px; flex-shrink: 0; }
.diag-intro-note {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-family: var(--serif-display);
  font-style: italic;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
}

/* ── Step 1 Basic ── */
.diag-basic-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 16px;
}
.diag-basic-field { display: flex; flex-direction: column; }
.diag-basic-field select,
.diag-basic-field input {
  font-family: var(--serif-body);
  font-size: 16px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  color: var(--ink);
  width: 100%;
}
.diag-basic-field select:focus,
.diag-basic-field input:focus { outline: 2px solid var(--ivy); outline-offset: -1px; }
.diag-subjects-row {
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.diag-subjects-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }

/* ── Step 2 Habits ── */
.diag-habits-list { display: flex; flex-direction: column; gap: 24px; margin-top: 8px; }
.diag-habit-item { border-top: 1px solid var(--line); padding-top: 20px; }
.diag-habit-q-row { display: flex; align-items: baseline; gap: 14px; }
.diag-habit-q-num {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--gold);
  flex-shrink: 0;
}
.diag-habit-q-text { font-family: var(--serif-display); font-size: 21px; color: var(--ink); }
.diag-habit-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-top: 14px;
}
.diag-habit-opt {
  text-align: left;
  background: #fff;
  border: 1px solid var(--line);
  padding: 13px 17px;
  border-radius: 4px;
  font-family: var(--serif-display);
  font-size: 15px;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background 0.1s, border-color 0.1s;
}
.diag-habit-opt:hover { border-color: var(--ivy); }
.diag-habit-opt.is-active {
  background: var(--paper-2);
  border-color: var(--ivy);
}
.diag-habit-opt.is-active::after {
  content: "✓";
  color: var(--ivy);
  font-family: var(--mono);
  font-size: 13px;
}

/* ── Step 3 Academic ── */
.diag-academic-layout {
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 44px;
  margin-top: 8px;
  align-items: start;
}
.diag-quiz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}
.diag-quiz-counter {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold);
}
.diag-quiz-card {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 28px;
}
.diag-quiz-stem {
  font-family: var(--serif-display);
  font-size: 20px;
  line-height: 1.65;
  color: var(--ink);
}
.diag-quiz-options {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 22px;
}
.diag-quiz-opt {
  text-align: left;
  padding: 13px 17px;
  background: #fff;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 4px;
  font-family: var(--serif-display);
  font-size: 16px;
  cursor: pointer;
  transition: background 0.1s, border-color 0.1s, color 0.1s;
  display: flex;
  align-items: center;
  gap: 12px;
}
.diag-quiz-opt:hover { border-color: var(--ivy); }
.diag-quiz-opt.is-active {
  background: var(--ivy);
  color: var(--paper);
  border-color: var(--ivy);
}
.diag-quiz-opt-key {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  border: 1px solid currentColor;
  display: grid;
  place-items: center;
  font-size: 14px;
  flex-shrink: 0;
}
.diag-quiz-footer {
  margin-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.diag-quiz-timer {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
  color: var(--muted);
}
.diag-quiz-sidebar { }
.diag-quiz-dots {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
  margin-bottom: 20px;
}
.diag-quiz-dot {
  width: 18px;
  height: 18px;
  border-radius: 2px;
  background: transparent;
  border: 1px solid var(--line);
}
.diag-quiz-dot.is-done { background: var(--ivy); border-color: var(--ivy); }
.diag-quiz-dot.is-current { background: var(--gold); border-color: var(--gold); }
.diag-quiz-meta { display: flex; flex-direction: column; gap: 10px; }
.diag-quiz-meta-row {
  display: flex;
  justify-content: space-between;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--line);
  font-size: 13.5px;
}
.diag-quiz-meta-row .k { color: var(--muted); font-family: var(--serif-body); }
.diag-quiz-meta-row .v { font-family: var(--serif-display); color: var(--ink); }

/* ── Step 4 Goal ── */
.diag-goal-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 8px;
}
.diag-goal-field { display: flex; flex-direction: column; }
.diag-goal-field select {
  font-family: var(--serif-body);
  font-size: 16px;
  padding: 11px 13px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
  color: var(--ink);
}
.diag-goal-field select:focus { outline: 2px solid var(--ivy); outline-offset: -1px; }

/* ── Step 5 Matching / Ripple ── */
.diag-matching-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  margin-top: 28px;
}
.diag-matching-steps { display: flex; flex-direction: column; gap: 12px; margin-top: 28px; }
.diag-matching-step {
  display: flex;
  gap: 14px;
  align-items: center;
  padding: 10px 0;
  opacity: 0.35;
  transition: opacity 0.3s;
}
.diag-matching-step.is-active { opacity: 1; }
.diag-matching-step.is-done { opacity: 1; }
.diag-matching-step-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10.5px;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}
.diag-matching-step.is-active .diag-matching-step-num {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--ivy-deep);
}
.diag-matching-step.is-done .diag-matching-step-num {
  background: var(--ivy);
  border-color: var(--ivy);
  color: var(--paper);
}
.diag-matching-step-text {
  font-family: var(--serif-display);
  font-size: 16px;
  color: var(--ink);
}

/* Ripple SVG container */
.diag-ripple-wrap {
  position: relative;
  aspect-ratio: 1;
  max-width: 440px;
  margin: 0 auto;
  width: 100%;
}
.diag-ripple-wrap svg { width: 100%; height: auto; display: block; }

/* Matched teacher cards */
.diag-teachers-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 40px;
}
.diag-teacher-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 24px;
  position: relative;
  overflow: hidden;
}
.diag-teacher-card-rank {
  position: absolute;
  top: 14px;
  right: 18px;
  font-family: var(--serif-display);
  font-style: italic;
  font-size: 64px;
  color: var(--paper-2);
  line-height: 1;
  pointer-events: none;
}
.diag-teacher-match-rate {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--gold);
  text-transform: uppercase;
}
.diag-teacher-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--ivy);
  color: var(--paper);
  display: grid;
  place-items: center;
  font-family: var(--serif-display);
  font-size: 22px;
  margin: 12px 0 8px;
}
.diag-teacher-avatar.gold { background: var(--gold); color: var(--ivy-deep); }
.diag-teacher-name { font-family: var(--serif-display); font-size: 24px; }
.diag-teacher-subject {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--gold);
  margin-top: 2px;
}
.diag-teacher-reason {
  font-family: var(--serif-display);
  font-style: italic;
  font-size: 14px;
  color: var(--ink-2);
  line-height: 1.5;
  margin-top: 12px;
}
.diag-teacher-footer {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  display: flex;
  justify-content: space-between;
  font-size: 13px;
}

/* ── CSS keyframes for ripple rings ── */
@keyframes ripple-ring {
  0%   { transform: scale(0.85); opacity: 0.6; }
  50%  { transform: scale(1.12); opacity: 0.25; }
  100% { transform: scale(0.85); opacity: 0.6; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Mobile ── */
@media (max-width: 880px) {
  .diag-intro-grid { grid-template-columns: 1fr; }
  .diag-intro-aside { position: static; }
  .diag-basic-grid { grid-template-columns: 1fr; }
  .diag-habits-options { grid-template-columns: 1fr; }
  .diag-academic-layout { grid-template-columns: 1fr; }
  .diag-quiz-sidebar { display: none; }
  .diag-goal-grid { grid-template-columns: 1fr; }
  .diag-matching-grid { grid-template-columns: 1fr; }
  .diag-ripple-wrap { max-width: 260px; }
  .diag-teachers-grid { grid-template-columns: 1fr; }
  .diag-stepper-wrap .stepper {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .diag-stepper-wrap .stepper-step::after { display: none; }
}