/* ═══════════════════════════════════════════════════════════════
   Study&Go IO — Theme
   Portfolio-inspired: JetBrains Mono + Instrument Serif,
   deep navy surfaces, film grain, 1px grid borders.
   Study&Go brand palette mapped onto the portfolio structure.
   ═══════════════════════════════════════════════════════════════ */

@import url("https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600&family=Instrument+Serif:ital@0;1&display=swap");

:root {
  --bg:        #070D1F;
  --bg-elev:   #0C1A3D;
  --bg-card:   #132452;
  --bg-card-2: #1B2F66;
  --line:      rgba(139,180,217,0.08);
  --line-2:    rgba(139,180,217,0.15);
  --line-3:    rgba(139,180,217,0.25);
  --ink:       #E8F0F9;
  --ink-dim:   #7E96B8;
  --ink-dimmer:#4A6280;
  --accent:    #D6DEAB;
  --accent-2:  #E8EFC4;
  --accent-dark:#3F5A4A;
  --success:   #34D399;
  --warning:   #FBBF24;
  --danger:    #F87171;
  --info:      #60A5FA;
  --purple:    #A78BFA;
  --mono:      "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --serif:     "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
  --sans:      "Inter", -apple-system, sans-serif;
  --page-pad:  clamp(16px, 3vw, 40px);
  --sidebar-w: 210px;
  --nav-h:     50px;
  --ease:      cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Reset for IO pages ── */
.io-body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--mono);
  font-optical-sizing: auto;
  font-size: 13px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
  height: 100vh;
}
.io-nav__logo {
  height: 26px;
  width: auto;
  display: block;
}
.io-body *, .io-body *::before, .io-body *::after { box-sizing: border-box; }
.io-body a { color: inherit; text-decoration: none; }
.io-body h1,.io-body h2,.io-body h3,.io-body h4,.io-body p { margin: 0; }
.io-body button { font-family: inherit; cursor: pointer; }
.io-body ::selection { background: var(--accent); color: var(--bg); }

/* ── Grain ── */
.io-grain {
  position: fixed; inset: 0;
  pointer-events: none; z-index: 200;
  opacity: .04; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='1'/></svg>");
}

/* ═══════ NAV ═══════ */
.io-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  height: var(--nav-h);
  display: flex; align-items: center;
  padding: 0 var(--page-pad);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: linear-gradient(to bottom, rgba(7,13,31,.85), rgba(7,13,31,.6));
  border-bottom: 1px solid var(--line-2);
}
.io-nav__brand {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--sans); font-weight: 800; font-size: 16px;
  color: var(--ink); letter-spacing: -0.02em; flex-shrink: 0;
}
.io-nav__brand .amp { color: var(--accent); font-weight: 700; margin: 0 1px; }
.io-nav__dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 10px var(--accent);
  animation: io-pulse 2.4s ease-in-out infinite;
}
@keyframes io-pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: .55; transform: scale(.85); }
}
.io-nav__center {
  flex: 1; display: flex; align-items: center;
  justify-content: center; gap: 4px;
  font-size: 12px; letter-spacing: .04em;
}
.io-nav__center a { color: var(--ink-dim); transition: color .2s; }
.io-nav__center a:hover { color: var(--ink); }
.io-nav__center .active { color: var(--ink); font-weight: 500; }
.io-nav__center .sep { color: var(--ink-dimmer); margin: 0 2px; font-size: 10px; }
.io-nav__right {
  display: flex; align-items: center; gap: 14px; flex-shrink: 0;
}
.io-nav__uni {
  font-size: 11px; letter-spacing: .04em; color: var(--ink-dim);
  display: none;
}
@media (min-width: 800px) { .io-nav__uni { display: block; } }
.io-nav__avatar {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--bg-card); border: 1px solid var(--line-2);
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 600; color: var(--ink-dim);
}

/* ═══════ LAYOUT ═══════ */
.io-layout {
  display: flex;
  height: calc(100vh - var(--nav-h));
  margin-top: var(--nav-h);
  overflow: hidden;
}

/* ═══════ SIDEBAR ═══════ */
.io-sidebar {
  width: var(--sidebar-w); flex-shrink: 0;
  background: var(--bg-elev);
  border-right: 1px solid var(--line);
  display: flex; flex-direction: column;
  transition: width .45s var(--ease), opacity .25s;
  overflow: hidden;
}
.io-sidebar.collapsed { width: 0; border-right: none; opacity: 0; pointer-events: none; }

/* Floating reopen button — only visible when sidebar is collapsed */
.io-sidebar-reopen {
  position: fixed;
  top: calc(var(--nav-h) + 10px);
  left: 10px;
  z-index: 90;
  width: 30px; height: 30px;
  display: none; align-items: center; justify-content: center;
  background: var(--bg-elev); border: 1px solid var(--line-2);
  border-radius: 6px; color: var(--ink-dim);
  cursor: pointer; transition: color .2s, border-color .2s, background .2s;
}
.io-sidebar-reopen:hover { color: var(--ink); border-color: var(--ink-dim); background: var(--bg-card); }
.io-sidebar.collapsed ~ .io-sidebar-reopen,
body:has(.io-sidebar.collapsed) .io-sidebar-reopen { display: flex; }
.io-sidebar__head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 16px 10px; flex-shrink: 0;
}
.io-sidebar__label {
  font-size: 10px; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase; color: var(--ink-dimmer);
}
.io-sidebar__toggle {
  background: none; border: none; color: var(--ink-dimmer);
  padding: 4px; border-radius: 4px; display: flex;
  transition: color .2s, background .2s;
}
.io-sidebar__toggle:hover { color: var(--ink); background: rgba(139,180,217,.06); }
.io-sidebar__nav { padding: 0 10px 16px; overflow-y: auto; flex: 1; }

/* Phase groups — vertical rail like portfolio timeline */
.io-phase { position: relative; padding-left: 20px; margin-bottom: 6px; }
.io-phase::before {
  content: ""; position: absolute;
  left: 5px; top: 26px; bottom: 2px;
  width: 1px; background: var(--line-2);
}
.io-phase__label {
  display: flex; align-items: center; gap: 6px;
  font-size: 9px; font-weight: 600;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-dimmer); padding: 8px 0 4px;
  position: relative;
}
.io-phase__dot {
  position: absolute; left: -20px;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--bg-elev);
  border: 1.5px solid var(--ink-dimmer);
  box-shadow: 0 0 0 3px var(--bg-elev);
}
.io-phase__dot--green { border-color: var(--success); background: var(--success); }
.io-phase__dot--blue  { border-color: var(--info); background: var(--info); }
.io-phase__dot--purple{ border-color: var(--purple); background: var(--purple); }

.io-step {
  display: flex; align-items: center; gap: 8px;
  padding: 5px 8px; margin: 1px 0; border-radius: 4px;
  color: var(--ink-dim); font-size: 12px;
  transition: background .15s, color .15s; position: relative;
}
.io-step:hover { background: rgba(139,180,217,.06); color: var(--ink); }
.io-step--active {
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  color: var(--accent);
}
.io-step--disabled { opacity: .3; pointer-events: none; }
.io-step__num {
  font-size: 10px; color: var(--ink-dimmer);
  width: 14px; text-align: right; flex-shrink: 0;
}
.io-step--active .io-step__num { color: var(--accent); }
.io-step__badge {
  font-size: 8px; letter-spacing: .1em; text-transform: uppercase;
  padding: 1px 5px; border: 1px dashed var(--line-3);
  border-radius: 999px; color: var(--ink-dimmer); margin-left: auto;
}

/* ── Dashboard sidebar link ── */
.io-sidebar__dashboard {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  margin: 0 10px 8px;
  border-radius: 5px;
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-dim);
  background: transparent;
  border: 1px solid transparent;
  transition: all 0.2s;
  cursor: pointer;
}
.io-sidebar__dashboard:hover {
  color: var(--ink);
  background: rgba(139,180,217,0.06);
}
.io-sidebar__dashboard--active {
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  border-color: color-mix(in srgb, var(--accent) 15%, transparent);
}

/* ═══════ MAIN ═══════ */
.io-main { flex: 1; overflow: hidden; position: relative; }

/* Views */
.io-view {
  position: absolute; inset: 0;
  display: none; flex-direction: column;
  overflow-y: auto; overflow-x: hidden;
}
.io-view--active { display: flex; }

/* ═══════ SECTION LABEL ═══════ */
.io-section-label {
  font-family: var(--mono);
  font-size: 10px; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-dimmer);
  padding-bottom: 14px;
}

/* ═══════ STAT CARDS — 1px-gap grid (portfolio pattern) ═══════ */
.io-stats {
  display: grid; grid-template-columns: repeat(5, 1fr);
  gap: 1px; background: var(--line);
  border: 1px solid var(--line); border-radius: 6px;
  overflow: hidden;
}
.io-stat {
  background: var(--bg); padding: 16px 14px;
  display: flex; flex-direction: column; gap: 2px;
  cursor: pointer; transition: background .2s;
  border: none; font-family: inherit; color: inherit; text-align: left;
}
.io-stat:hover { background: var(--bg-elev); }
.io-stat__dot {
  width: 6px; height: 6px; border-radius: 50%; margin-bottom: 6px;
}
.io-stat__dot--green  { background: var(--success); box-shadow: 0 0 8px var(--success); }
.io-stat__dot--amber  { background: var(--warning); box-shadow: 0 0 8px var(--warning); }
.io-stat__dot--red    { background: var(--danger); box-shadow: 0 0 8px var(--danger); }
.io-stat__dot--blue   { background: var(--info); box-shadow: 0 0 8px var(--info); }
.io-stat__dot--purple { background: var(--purple); box-shadow: 0 0 8px var(--purple); }
.io-stat__val {
  font-family: var(--serif); font-style: italic;
  font-size: 36px; font-weight: 400;
  color: var(--ink); line-height: 1; letter-spacing: -.02em;
}
.io-stat__label {
  font-family: var(--mono); font-size: 9px; font-weight: 500;
  letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink-dimmer); margin-top: 4px;
}

/* ═══════ GRAPH FRAME ═══════ */
.io-graph-frame {
  flex: 1; min-height: 0;
  background: var(--bg-elev);
  border: 1px solid var(--line); border-radius: 6px;
  overflow: hidden; position: relative;
  display: flex; flex-direction: column;
  cursor: pointer; transition: border-color .25s;
}
.io-graph-frame:hover { border-color: var(--line-3); }
.io-graph-frame__bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 8px 14px; border-bottom: 1px solid var(--line); flex-shrink: 0;
}
.io-graph-frame__title {
  font-size: 11px; font-weight: 500; letter-spacing: .04em; color: var(--ink-dim);
}
.io-graph-frame__expand {
  display: inline-flex; align-items: center; gap: 6px;
  background: none; border: 1px solid var(--line-2);
  border-radius: 999px; padding: 4px 12px;
  color: var(--ink-dim); font-size: 10px;
  font-family: var(--mono); letter-spacing: .06em;
  cursor: pointer; transition: border-color .2s, color .2s;
}
.io-graph-frame__expand:hover { border-color: var(--accent); color: var(--accent); }
.io-graph-frame__canvas { flex: 1; min-height: 0; }

/* ═══════ DASHBOARD PANELS (graph + map side by side) ═══════ */
.io-dashboard-panels {
  display: flex;
  gap: 16px;
  flex: 1;
  min-height: 0;
}
.io-dashboard-panels > .io-graph-frame {
  flex: 1;
  min-width: 0;
}

/* ═══════ FULL-SCREEN VIEW CHROME ═══════ */
.io-fullview { display: flex; flex-direction: column; height: 100%; }
.io-fullview__bar {
  display: flex; align-items: center; gap: 14px;
  padding: 10px var(--page-pad);
  border-bottom: 1px solid var(--line); flex-shrink: 0;
}
.io-fullview__bar h2 {
  font-family: var(--serif); font-style: italic;
  font-weight: 400; font-size: 22px; color: var(--ink); flex: 1;
}
.io-back-btn {
  display: inline-flex; align-items: center; gap: 6px;
  background: none; border: 1px solid var(--line-2);
  border-radius: 999px; padding: 5px 14px 5px 10px;
  color: var(--ink-dim); font-family: var(--mono);
  font-size: 11px; letter-spacing: .04em;
  cursor: pointer; transition: border-color .2s, color .2s;
}
.io-back-btn:hover { border-color: var(--ink); color: var(--ink); }
.io-back-btn .arr { transition: transform .2s; }
.io-back-btn:hover .arr { transform: translateX(-2px); }
.io-mini-select {
  background: var(--bg-card); border: 1px solid var(--line-2);
  border-radius: 4px; padding: 4px 8px;
  color: var(--ink); font-family: var(--mono); font-size: 11px; cursor: pointer;
}
.io-mini-select:focus { outline: none; border-color: var(--accent); }
.io-fullview__count {
  display: flex; align-items: center; gap: 6px;
  font-size: 12px; color: var(--ink-dim);
}
.io-fullview__pulse {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--success); box-shadow: 0 0 8px var(--success);
  animation: io-pulse 2.4s ease-in-out infinite;
}
.io-graph-canvas { flex: 1; min-height: 0; position: relative; }
.io-map-canvas   { flex: 1; min-height: 0; position: relative; overflow: hidden; }

/* Pipeline focus banner */
.pipeline-focus-banner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; margin: 12px var(--page-pad) 0;
  padding: 10px 14px;
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: 8px;
  font-size: 12px; color: var(--ink);
}
.pipeline-focus-banner strong { color: var(--accent); font-weight: 600; }
.pipeline-focus-banner button {
  background: none; border: 1px solid var(--line-2);
  color: var(--ink-dim); font-family: inherit; font-size: 11px;
  padding: 4px 10px; border-radius: 999px; cursor: pointer;
  transition: color .2s, border-color .2s;
}
.pipeline-focus-banner button:hover { color: var(--ink); border-color: var(--ink-dim); }

/* ═══════════════════════════════════════════════
   MOBILE — phone-friendly layout (≤ 720px)
   ═══════════════════════════════════════════════ */
@media (max-width: 720px) {
  :root {
    --page-pad: 14px;
    --sidebar-w: 240px;
    --nav-h: 52px;
  }
  .io-body { overflow: auto; height: auto; min-height: 100vh; font-size: 12px; }

  /* Nav — keep brand + avatar, hide university chip */
  .io-nav { padding: 0 12px; }
  .io-nav__uni { display: none !important; }
  .io-nav__center { font-size: 11px; gap: 2px; }
  .io-nav__center .sep { margin: 0; }
  .io-nav__logo { height: 22px; }
  .io-nav__avatar { width: 26px; height: 26px; }

  /* Sidebar — overlay drawer (not pushing layout) */
  .io-sidebar {
    position: fixed; top: var(--nav-h); left: 0; bottom: 0;
    z-index: 95;
    box-shadow: 12px 0 32px rgba(0,0,0,0.5);
  }
  .io-sidebar.collapsed { width: 0; box-shadow: none; }
  .io-main { width: 100%; }
  .io-sidebar-reopen { top: calc(var(--nav-h) + 6px); left: 6px; }

  /* Views become scrollable instead of fixed */
  .io-view { position: relative; inset: auto; }
  .io-view--active { display: flex; }
  .io-layout { height: auto; overflow: visible; }

  /* Stat cards — 2 columns on phone, 1 on very narrow */
  .io-stats { grid-template-columns: repeat(2, 1fr); }
  .io-stat { padding: 12px 10px; }
  .io-stat__val { font-size: 28px; }
  .io-stat__label { font-size: 8px; }

  /* Dashboard panels stack vertically */
  .io-dashboard-panels { flex-direction: column; gap: 10px; }
  .io-dashboard-panels > .io-graph-frame { min-height: 280px; }

  /* Fullview bars wrap so back-button + title + select still fit */
  .io-fullview__bar { flex-wrap: wrap; gap: 8px; padding: 10px 12px; }
  .io-fullview__bar h2 { font-size: 18px; flex: 1 1 100%; order: 3; }
  .io-back-btn { font-size: 10px; padding: 4px 10px 4px 8px; }
  .io-fullview__count { font-size: 11px; }

  /* Step pages — single column */
  .step-grid--2x2, .step-grid--3 { grid-template-columns: 1fr; }
  .io-step-page { padding: 14px; }
  .step-header h2 { font-size: 24px; }

  /* Kanban — tighter columns, momentum scroll */
  .kanban { padding: 12px; gap: 10px; -webkit-overflow-scrolling: touch; }
  .kanban-col { grid-auto-columns: minmax(220px, 80vw); }
  .pipeline-focus-banner { margin: 10px 12px 0; flex-wrap: wrap; }

  /* Student modal — full width with breathing room */
  .student-modal__card { margin: 4vh auto; padding: 22px 20px; width: 94vw; max-height: 92vh; }
  .student-modal__grid { grid-template-columns: 1fr; gap: 14px; }
  .student-modal__name { font-size: 20px; }
  .student-modal__actions { flex-direction: column; align-items: stretch; }
  .student-modal__actions .io-btn { justify-content: center; }

  /* Rules / grade cols stack */
  .rule-item__body { grid-template-columns: 1fr; }
  .rule-before { border-right: none; border-bottom: 1px solid var(--line); }
  .grade-cols { grid-template-columns: 1fr; }
}

/* ═══════ KANBAN — Mobility Pipeline ═══════ */
.kanban {
  flex: 1; min-height: 0;
  display: grid; grid-auto-flow: column;
  grid-auto-columns: minmax(220px, 1fr);
  gap: 12px;
  overflow-x: auto; overflow-y: hidden;
  padding: 16px var(--page-pad);
}
.kanban-col {
  display: flex; flex-direction: column;
  background: var(--bg-elev);
  border: 1px solid var(--line-2);
  border-top: 3px solid var(--col-accent, var(--ink-dim));
  border-radius: 8px;
  overflow: hidden; min-height: 0;
}
.kanban-col__head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 14px; flex-shrink: 0;
  border-bottom: 1px solid var(--line);
}
.kanban-col__title {
  font-size: 11px; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--col-accent, var(--ink-dim));
}
.kanban-col__count {
  font-size: 11px; color: var(--ink-dim);
  background: var(--bg-card); padding: 2px 8px; border-radius: 999px;
}
.kanban-col__list {
  flex: 1; min-height: 0; overflow-y: auto;
  padding: 8px; display: flex; flex-direction: column; gap: 8px;
}
.kanban-card {
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-left: 2px solid var(--col-accent, var(--ink-dim));
  border-radius: 6px;
  padding: 10px 12px;
  display: flex; flex-direction: column; gap: 4px;
  cursor: pointer; transition: transform .15s, border-color .15s;
}
.kanban-card:hover { transform: translateY(-1px); border-color: var(--line-3); }
.kanban-card__name {
  font-size: 12px; font-weight: 600; color: var(--ink);
}
.kanban-card__meta {
  font-size: 10px; color: var(--ink-dim);
  display: flex; gap: 8px; flex-wrap: wrap;
}
.kanban-card__dest {
  font-size: 10px; color: var(--ink-dim);
  display: flex; align-items: center; gap: 4px;
  margin-top: 2px;
}
.kanban-card--stuck {
  border-left-color: #F87171;
  background: linear-gradient(90deg, rgba(248,113,113,0.08), var(--bg-card));
}
.kanban-card--stuck .kanban-card__dest { color: #F87171; }
.kanban-empty {
  text-align: center; padding: 20px 10px;
  font-size: 11px; color: var(--ink-dimmer); font-style: italic;
}

/* ═══════ STUDENT PROFILE MODAL ═══════ */
.student-modal { position: fixed; inset: 0; z-index: 400; display: none; }
.student-modal.open { display: block; }
.student-modal__overlay {
  position: absolute; inset: 0;
  background: rgba(7,13,31,0.72);
  backdrop-filter: blur(6px);
}
.student-modal__card {
  position: relative;
  width: min(520px, 92vw);
  max-height: 86vh; overflow-y: auto;
  margin: 6vh auto;
  background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-elev) 100%);
  border: 1px solid var(--line-3);
  border-radius: 12px;
  padding: 28px 30px 26px;
  box-shadow: 0 24px 80px rgba(0,0,0,0.6);
  animation: sm-in 0.22s var(--ease);
}
@keyframes sm-in { from { opacity:0; transform: translateY(12px) scale(0.98); } to { opacity:1; transform: none; } }
.student-modal__close {
  position: absolute; top: 12px; right: 14px;
  background: none; border: none; color: var(--ink-dim);
  font-size: 24px; line-height: 1; cursor: pointer; padding: 4px 8px;
  transition: color .2s;
}
.student-modal__close:hover { color: var(--ink); }
.student-modal__head {
  display: flex; gap: 14px; align-items: center;
  padding-bottom: 18px; margin-bottom: 18px;
  border-bottom: 1px solid var(--line-2);
}
.student-modal__avatar {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--bg); border: 1px solid var(--line-3);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; font-weight: 700; color: var(--accent);
  flex-shrink: 0;
}
.student-modal__name {
  font-family: var(--serif); font-style: italic;
  font-size: 22px; color: var(--ink); line-height: 1.1;
}
.student-modal__sub {
  font-size: 11px; color: var(--ink-dim); margin-top: 4px;
}
.student-modal__grid {
  display: grid; grid-template-columns: auto 1fr; gap: 18px;
  padding-bottom: 18px; margin-bottom: 18px;
  border-bottom: 1px solid var(--line-2);
}
.student-modal__field { display: flex; flex-direction: column; gap: 4px; }
.student-modal__label {
  font-size: 9px; font-weight: 600;
  letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-dimmer);
}
.student-modal__value { font-size: 14px; color: var(--ink); font-weight: 500; }
.student-modal__value--big {
  font-family: var(--serif); font-style: italic;
  font-size: 28px; font-weight: 400; color: var(--accent);
}
.student-modal__motivation {
  margin-top: 6px; font-size: 13px; line-height: 1.6;
  color: var(--ink); font-style: italic;
  padding: 12px 14px;
  background: var(--bg); border-left: 2px solid var(--accent);
  border-radius: 4px;
}
.student-modal__actions {
  display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap;
}
.io-btn--sm {
  padding: 7px 12px; font-size: 11px;
}
.student-modal__media {
  margin-top: 14px;
  border: 1px solid var(--line-2);
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg);
  animation: sm-in 0.2s var(--ease);
}
.student-modal__media--pdf {
  padding: 18px 18px 22px;
  font-size: 12px; color: var(--ink-dim); line-height: 1.7;
  position: relative;
}
.student-modal__media--pdf::before {
  content: "MOTIVATION_LETTER.pdf · 2 pages";
  display: block; font-size: 9px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--ink-dimmer);
  margin-bottom: 12px; padding-bottom: 10px;
  border-bottom: 1px dashed var(--line-2);
}
.student-modal__media--pdf p { margin: 0 0 10px; }
.student-modal__media--video {
  aspect-ratio: 16 / 9;
  display: flex; align-items: center; justify-content: center;
  background: radial-gradient(circle at 50% 40%, var(--bg-card-2), var(--bg));
  position: relative; cursor: pointer;
}
.student-modal__media--video::after {
  content: "▶"; font-size: 32px; color: var(--accent);
  width: 64px; height: 64px; border-radius: 50%;
  background: rgba(214,222,171,0.12); border: 1.5px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  padding-left: 4px;
  box-shadow: 0 0 30px rgba(214,222,171,0.25);
}
.student-modal__media--video::before {
  content: "1 min 42 sec · auto-transcribed";
  position: absolute; bottom: 10px; left: 12px;
  font-size: 10px; letter-spacing: .08em;
  color: var(--ink-dim);
}
.student-modal__status {
  margin-top: 16px; padding: 10px 14px;
  border-radius: 6px; font-size: 12px;
  display: none;
}
.student-modal__status.is-stuck {
  display: block;
  background: rgba(248,113,113,0.1);
  border: 1px solid rgba(248,113,113,0.3);
  color: #F87171;
}

/* ═══════ STEP PAGES ═══════ */
.io-step-page { padding: var(--page-pad); max-width: 1100px; }
.step-header {
  margin-bottom: 24px; padding-bottom: 18px; border-bottom: 1px solid var(--line);
}
.step-header h2 {
  font-family: var(--serif); font-style: italic;
  font-weight: 400; font-size: 32px; color: var(--ink);
  margin: 10px 0 8px;
}
.step-header h2 em { color: var(--accent); }
.step-header p {
  color: var(--ink-dim); font-size: 13px; line-height: 1.6; max-width: 52ch;
}

/* Step grid — same 1px-gap pattern as stat cards */
.step-grid {
  display: grid; gap: 14px;
  border-radius: 10px;
}
.step-grid--2x2 { grid-template-columns: 1fr 1fr; }
.step-grid--3   { grid-template-columns: 1fr 1fr 1fr; }
.step-grid--1   { grid-template-columns: 1fr; }
.step-box {
  position: relative;
  background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg-elev) 100%);
  border: 1px solid var(--line-2);
  border-radius: 10px;
  padding: 22px 26px;
  display: flex; flex-direction: column; gap: 14px; min-height: 180px;
  box-shadow: 0 1px 0 rgba(255,255,255,0.03) inset, 0 8px 24px rgba(0,0,0,0.25);
  transition: border-color .2s, transform .2s;
}
.step-box:hover { border-color: var(--line-3); }
.step-box::before {
  content: ""; position: absolute; left: 0; top: 18px; bottom: 18px;
  width: 3px; border-radius: 0 3px 3px 0;
  background: linear-gradient(180deg, var(--accent), transparent);
}
.step-box__head {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 12px; border-bottom: 1px solid var(--line-2);
}
.step-box__title {
  font-family: var(--serif); font-style: italic; font-size: 20px; color: var(--ink);
  letter-spacing: -0.01em;
}
.step-box__num {
  font-size: 10px; letter-spacing: .14em; color: var(--accent);
  padding: 3px 9px; border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: 999px; background: color-mix(in srgb, var(--accent) 6%, transparent);
  text-transform: uppercase;
}
.step-box__num {
  font-size: 9px; letter-spacing: .12em; color: var(--ink-dimmer);
}

/* Gate config items */
.gate-item {
  display: grid; grid-template-columns: 24px 1fr auto;
  gap: 10px; align-items: center;
  padding: 12px 0; border-top: 1px solid var(--line);
}
.gate-item:first-child { border-top: none; }
.gate-item__num {
  font-size: 10px; color: var(--ink-dimmer); letter-spacing: .1em; text-align: center;
}
.gate-item__title { font-size: 13px; color: var(--ink); }
.gate-item__auto {
  font-size: 9px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--accent); padding: 2px 8px;
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  border-radius: 999px; background: color-mix(in srgb, var(--accent) 6%, transparent);
}
.gate-input {
  background: var(--bg-card); border: 1px solid var(--line-2);
  border-radius: 4px; padding: 5px 10px;
  color: var(--ink); font-family: var(--mono); font-size: 12px;
}
.gate-input:focus { outline: none; border-color: var(--accent); }

/* Semester / filter items */
.semester-item {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 0; border-top: 1px solid var(--line);
  font-size: 12px; color: var(--ink-dim); cursor: pointer;
  transition: color .15s;
}
.semester-item:first-child { border-top: none; }
.semester-item:hover { color: var(--ink); }
.semester-item input[type="checkbox"] {
  appearance: none; width: 14px; height: 14px;
  border: 1px solid var(--line-3); border-radius: 3px;
  background: var(--bg); cursor: pointer; position: relative;
  transition: border-color .15s, background .15s; flex-shrink: 0;
}
.semester-item input[type="checkbox"]:checked {
  background: var(--accent); border-color: var(--accent);
}
.semester-item input[type="checkbox"]:checked::after {
  content: "✓"; position: absolute; inset: 0;
  display: flex; align-items: center; justify-content: center;
  font-size: 10px; color: var(--bg); font-weight: 700;
}

.filter-group { display: flex; flex-wrap: wrap; gap: 6px; }
.filter-pill {
  padding: 5px 12px; border: 1px solid var(--line-2);
  border-radius: 999px; font-size: 11px; color: var(--ink-dim);
  background: transparent; font-family: var(--mono);
  cursor: pointer; transition: all .15s;
}
.filter-pill:hover { border-color: var(--ink-dim); color: var(--ink); }
.filter-pill--active {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-color: var(--accent); color: var(--accent);
}

/* Calendar dates */
.cal-date {
  display: grid; grid-template-columns: 10px 1fr;
  gap: 10px; align-items: start; padding: 8px 0;
  border-top: 1px solid var(--line);
}
.cal-date:first-child { border-top: none; }
.cal-dot {
  width: 10px; height: 10px; border-radius: 2px; margin-top: 3px;
}
.cal-dot--done { background: var(--ink-dimmer); }
.cal-dot--next { background: var(--success); box-shadow: 0 0 6px var(--success); }
.cal-dot--soon { background: var(--warning); }
.cal-dot--missed { background: var(--danger); }
.cal-date__text { font-size: 12px; color: var(--ink-dim); line-height: 1.5; }
.cal-date__text strong { color: var(--ink); font-weight: 500; display: block; }

/* Transformation rules (before/after) */
.rule-item {
  border: 1px solid var(--line); border-radius: 6px;
  overflow: hidden; margin-bottom: 12px;
}
.rule-item:last-child { margin-bottom: 0; }
.rule-item__head {
  padding: 8px 14px; font-size: 12px; font-weight: 600;
  color: var(--ink); border-bottom: 1px solid var(--line); background: var(--bg-elev);
}
.rule-item__body { display: grid; grid-template-columns: 1fr 1fr; }
.rule-before, .rule-after {
  padding: 12px 14px; font-size: 12px; line-height: 1.6;
}
.rule-before { background: var(--bg); color: var(--ink-dim); border-right: 1px solid var(--line); }
.rule-after { background: color-mix(in srgb, var(--accent) 3%, var(--bg)); color: var(--ink); }
.rule-label {
  font-size: 9px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--ink-dimmer); margin-bottom: 4px; display: block;
}
.rule-after .rule-label { color: var(--accent); }

/* Grade columns */
.grade-cols {
  display: grid; grid-template-columns: 1fr 1fr 1fr;
  gap: 1px; background: var(--line);
  border-radius: 6px; overflow: hidden;
}
.grade-col { background: var(--bg); padding: 14px; text-align: center; }
.grade-col__label {
  font-size: 9px; letter-spacing: .12em;
  text-transform: uppercase; margin-bottom: 6px;
}
.grade-col--fail .grade-col__label { color: var(--danger); }
.grade-col--border .grade-col__label { color: var(--warning); }
.grade-col--pass .grade-col__label { color: var(--success); }
.grade-col__count {
  font-family: var(--serif); font-style: italic; font-size: 28px; color: var(--ink);
}
.grade-col__names { margin-top: 6px; font-size: 11px; color: var(--ink-dim); line-height: 1.6; }

/* Country distribution bar chart (Step 3) */
.dist-bars { display: flex; flex-direction: column; gap: 6px; margin-top: 8px; }
.dist-bar {
  display: grid; grid-template-columns: 80px 1fr 24px;
  gap: 8px; align-items: center; font-size: 11px;
}
.dist-bar__label { color: var(--ink-dim); text-align: right; }
.dist-bar__track {
  height: 16px; background: var(--bg-card); border-radius: 2px; overflow: hidden;
}
.dist-bar__fill {
  height: 100%; border-radius: 2px;
  background: linear-gradient(90deg, var(--info), color-mix(in srgb, var(--accent) 60%, var(--info)));
  transition: width .6s var(--ease);
}
.dist-bar__count { color: var(--ink-dim); font-size: 10px; }

/* ═══════ BUTTONS ═══════ */
.io-btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 10px 18px; border-radius: 999px;
  font-family: var(--mono); font-size: 12px; letter-spacing: .04em;
  border: 1px solid var(--line-2); background: transparent;
  color: var(--ink); cursor: pointer; transition: all .2s;
}
.io-btn:hover { border-color: var(--ink); }
.io-btn--accent {
  background: var(--accent); border-color: var(--accent);
  color: var(--accent-dark); font-weight: 600;
}
.io-btn--accent:hover { background: var(--accent-2); border-color: var(--accent-2); }

/* ═══════ TOOLTIP ═══════ */
.io-tooltip {
  position: fixed; z-index: 300;
  background: var(--bg-card); border: 1px solid var(--line-2);
  border-radius: 6px; padding: 12px 16px;
  pointer-events: none; opacity: 0; transform: translateY(4px);
  transition: opacity .15s, transform .15s;
  font-size: 12px; color: var(--ink); max-width: 260px;
  box-shadow: 0 12px 40px rgba(0,0,0,.5); line-height: 1.5;
}
.io-tooltip.visible { opacity: 1; transform: translateY(0); }
.io-tooltip__title {
  font-family: var(--serif); font-style: italic;
  font-size: 16px; color: var(--ink); margin-bottom: 6px;
}
.io-tooltip__row {
  display: flex; justify-content: space-between; gap: 16px; font-size: 11px;
}
.io-tooltip__row span:first-child { color: var(--ink-dim); }
.io-tooltip__row span:last-child { color: var(--ink); font-weight: 500; }
.io-tooltip__list { margin-top: 6px; padding-top: 6px; border-top: 1px solid var(--line); }
.io-tooltip__student { font-size: 11px; padding: 2px 0; color: var(--ink-dim); }

/* ═══════ ANIMATIONS ═══════ */
/* Reveal — simple, no animation fill-mode issues */
.io-reveal, .io-reveal-d1, .io-reveal-d2, .io-reveal-d3 {
  /* No animation — content visible immediately */
}