/* ============================================================
   Course Planning App Styles
   ============================================================ */
:root {
  --sidebar-width: 250px;
  --panel-width: 305px;
  --column-width: 185px;
  --sem-bg-fall: #fff8ed;
  --sem-bg-spring: #f0faf0;
  --stripe: repeating-linear-gradient(-45deg,transparent,transparent 4px,rgba(0,0,0,.05) 4px,rgba(0,0,0,.05) 8px);
}

html, body { height: 100%; overflow: hidden; margin: 0; font-family: system-ui, sans-serif; }

/* ── Toolbar ─────────────────────────────────────────────── */
.toolbar {
  background: #1a1a2e; color: #fff;
  padding: 7px 14px; display: flex; align-items: center; gap: 8px;
  flex-wrap: wrap; z-index: 100; height: 48px; box-sizing: border-box;
}
.toolbar .brand { font-weight: 700; font-size: 1rem; white-space: nowrap; }
.toolbar .brand img { height: 26px; vertical-align: middle; margin-right: 5px; }
.toolbar .btn { font-size: .78rem; padding: 3px 9px; }
.toolbar .divider { width: 1px; height: 24px; background: rgba(255,255,255,.2); margin: 0 3px; }

/* ── Layout ──────────────────────────────────────────────── */
/* 48px toolbar above, 34px disclaimer bar below */
.app-container { display: flex; height: calc(100vh - 82px); overflow: hidden; }

/* ── Standing disclaimer ─────────────────────────────────── */
.disclaimer-bar {
  position: fixed; bottom: 0; left: 0; right: 0; height: 34px;
  background: #fffbeb; border-top: 2px solid #fcd34d;
  color: #78350f; font-size: .74rem; line-height: 1.3;
  display: flex; align-items: center; gap: 9px;
  padding: 0 14px; z-index: 500;
}
.disclaimer-flag {
  background: #d97706; color: #fff; font-weight: 700;
  font-size: .64rem; text-transform: uppercase; letter-spacing: .04em;
  padding: 2px 7px; border-radius: 3px; white-space: nowrap; flex-shrink: 0;
}
.disclaimer-bar span:last-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#toast-container { bottom: 42px; right: 0; }
@media print { .disclaimer-bar { position: static; } }

/* ── Course Bank ─────────────────────────────────────────── */
/* z-index above .leader-line so arrows never spill across the sidebars —
   LeaderLine draws into body-level SVG and cannot be clipped to the timeline. */
.course-bank {
  width: var(--sidebar-width); min-width: var(--sidebar-width);
  background: #f5f5f5; border-right: 2px solid #ddd;
  display: flex; flex-direction: column; overflow: hidden;
  position: relative; z-index: 10;
}
.bank-header { padding: 9px 10px 7px; background: #ebebeb; border-bottom: 1px solid #ddd; }
.bank-header h6 { margin: 0 0 6px; font-size: .8rem; font-weight: 700; text-transform: uppercase; color: #555; }
.bank-search { width: 100%; font-size: .78rem; padding: 4px 7px;
  border: 1px solid #ccc; border-radius: 4px; box-sizing: border-box; }
.bank-list { flex: 1; overflow-y: auto; padding: 7px; }
.bank-list.drop-over { background: rgba(37,99,235,.07); outline: 2px dashed #2563eb; outline-offset: -2px; }
.bank-list::-webkit-scrollbar, .req-panel::-webkit-scrollbar,
.timeline-area::-webkit-scrollbar { width: 6px; height: 6px; }
.bank-list::-webkit-scrollbar-thumb, .req-panel::-webkit-scrollbar-thumb,
.timeline-area::-webkit-scrollbar-thumb { background: #ccc; border-radius: 3px; }

/* Bank requirement-group headers */
.bank-group-head {
  font-size: .66rem; font-weight: 700; text-transform: uppercase;
  color: #6b7280; letter-spacing: .04em;
  padding: 8px 3px 4px; margin-top: 4px;
  border-bottom: 1px solid #e0e0e0; display: flex;
  justify-content: space-between; align-items: baseline; gap: 6px;
}
.bank-group-head:first-child { margin-top: 0; }
.bank-group-head .grp-count { font-weight: 600; color: #9ca3af; }
.bank-group-head.done .grp-count { color: #16a34a; }
.bank-group-cards { display: flex; flex-direction: column; gap: 5px; padding: 5px 0; }
.bank-other-toggle {
  width: 100%; text-align: left; background: none; border: none;
  font-size: .66rem; font-weight: 700; text-transform: uppercase;
  color: #9ca3af; padding: 8px 3px 4px; cursor: pointer;
  border-top: 1px solid #e0e0e0; margin-top: 6px;
}
.bank-other-toggle:hover { color: #555; }

/* ── Timeline ────────────────────────────────────────────── */
.timeline-area { flex: 1; overflow-x: auto; overflow-y: auto; position: relative; min-width: 0; }
.timeline-scroll { display: flex; min-height: 100%; padding-bottom: 60px; }

.semester-column { width: var(--column-width); min-width: var(--column-width);
  border-right: 1px solid #dde; display: flex; flex-direction: column; flex-shrink: 0; }
.sem-header { text-align: center; font-weight: 700; font-size: .78rem;
  padding: 7px 4px 5px; border-bottom: 2px solid #dde;
  position: sticky; top: 0; z-index: 5; }
.sem-header.fall   { background: var(--sem-bg-fall);   color: #92400e; }
.sem-header.spring { background: var(--sem-bg-spring); color: #166534; }
.credit-label { font-size: .65rem; font-weight: 400; color: #888; display: block; }
.credit-label.over { color: #dc2626; font-weight: 600; }
.drop-zone { flex: 1; min-height: 480px; padding: 6px; display: flex;
  flex-direction: column; gap: 5px; transition: background .15s; }
.drop-zone.fall   { background: rgba(255,248,237,.35); }
.drop-zone.spring { background: rgba(240,250,240,.35); }
.drop-zone.drag-over { background: rgba(37,99,235,.1);  outline: 2px dashed #2563eb; outline-offset: -2px; }
.drop-zone.warn-over { background: rgba(234,179,8,.12); outline: 2px dashed #d97706; outline-offset: -2px; }

/* ── Course Cards ────────────────────────────────────────── */
.course-card {
  background: #fff; border: 1px solid #d4d4d4; border-left: 4px solid #9ca3af;
  border-radius: 5px; padding: 6px 8px; cursor: grab;
  font-size: .76rem; user-select: none; position: relative;
  transition: box-shadow .15s, opacity .18s;
}
.course-card:hover { box-shadow: 0 2px 8px rgba(0,0,0,.13); z-index: 20; }
.course-card.dragging { opacity: .8; box-shadow: 0 6px 20px rgba(0,0,0,.22); cursor: grabbing; z-index: 999; }
.card-id     { font-weight: 700; color: #111; font-size: .8rem; }
.card-name   { color: #555; font-size: .7rem; line-height: 1.25; margin-top: 1px; }
.card-meta   { font-size: .62rem; color: #999; margin-top: 3px;
  display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.card-tracks { display: flex; flex-wrap: wrap; gap: 2px; margin-top: 3px; }

/* Badges */
.track-badge { font-size: .58rem; padding: 1px 4px; border-radius: 3px;
  color: #fff; font-weight: 600; line-height: 1.4; }
.track-badge.neutral { background: #e5e7eb; color: #4b5563; }
.track-badge.more {
  background: transparent; color: #9ca3af;
  border: 1px solid #d1d5db; font-weight: 500; cursor: help;
}

/* Inline status chips — no longer absolutely positioned, so they
   never collide with the remove button or sit over the arrow layer. */
.chip-warn    { background: #fef9c3; color: #854d0e; padding: 0 4px;
  border-radius: 3px; font-weight: 600; cursor: help; }
.chip-nooffer { background: #fef3c7; color: #92400e; padding: 0 4px;
  border-radius: 3px; font-weight: 600; }
.course-card.not-offered { background: var(--stripe); }
.course-card.prereq-warn { border-color: #eab308; }

/* Remove button — inside the card bounds */
.remove-btn {
  position: absolute; top: 3px; right: 3px;
  width: 16px; height: 16px; background: #ef4444; color: #fff;
  border: none; border-radius: 50%; font-size: .62rem;
  line-height: 16px; text-align: center; cursor: pointer;
  display: none; padding: 0; z-index: 30;
}
.course-card:hover .remove-btn { display: block; }

/* Focus-mode states */
.course-card.dimmed       { opacity: .22; }
.course-card.chain-focus  { box-shadow: 0 0 0 2px #2563eb, 0 3px 10px rgba(0,0,0,.15); z-index: 25; }
.course-card.chain-member { box-shadow: 0 0 0 2px rgba(37,99,235,.35); }
.course-card.flash        { animation: flash 1.1s ease-out; }
@keyframes flash {
  0%,100% { box-shadow: 0 0 0 0 rgba(37,99,235,0); }
  20%     { box-shadow: 0 0 0 3px rgba(37,99,235,.7); }
}

.leader-line { z-index: 6 !important; pointer-events: none; }

/* ── Requirements Panel ──────────────────────────────────── */
.req-panel {
  width: var(--panel-width); min-width: var(--panel-width);
  background: #fafafa; border-left: 2px solid #ddd;
  display: flex; flex-direction: column; overflow: hidden;
  position: relative; z-index: 10;
}
.app-container.panel-collapsed .req-panel { display: none; }

.req-head { padding: 9px 11px; background: #ebebeb; border-bottom: 1px solid #ddd; }
.req-head select { width: 100%; font-size: .78rem; padding: 4px 6px;
  border: 1px solid #ccc; border-radius: 4px; }
.req-title { font-size: .82rem; font-weight: 700; color: #333; margin: 7px 0 2px; }
.req-credits { font-size: .7rem; color: #666; }
.req-credits b { color: #111; }
.req-draft {
  font-size: .64rem; background: #fff7ed; color: #9a3412;
  border: 1px solid #fed7aa; border-radius: 4px;
  padding: 4px 6px; margin-top: 7px; line-height: 1.35;
}
.req-note {
  font-size: .64rem; background: #eff6ff; color: #1e40af;
  border: 1px solid #bfdbfe; border-radius: 4px;
  padding: 4px 6px; margin-top: 7px; line-height: 1.35;
}
.req-placeholder {
  font-size: .62rem; color: #9ca3af; line-height: 1.35;
  margin-top: 4px; font-style: italic;
}
.req-chip.faded { opacity: .45; }
.req-body { flex: 1; overflow-y: auto; padding: 9px 11px 14px; }
.req-foot { padding: 9px 11px; border-top: 1px solid #ddd; background: #f0f0f0; }

.req-group { margin-bottom: 13px; }
.req-group-head {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: 6px; font-size: .74rem; font-weight: 700; color: #374151;
  padding-bottom: 4px; border-bottom: 1px solid #e5e7eb; margin-bottom: 5px;
}
.req-group-head .note { font-weight: 400; font-size: .64rem; color: #9ca3af; }
.req-progress { font-size: .68rem; font-weight: 700; color: #9ca3af; white-space: nowrap; }
.req-group.done .req-group-head { color: #15803d; }
.req-group.done .req-progress   { color: #16a34a; }

.req-chips { display: flex; flex-wrap: wrap; gap: 3px; }
.req-chip {
  font-size: .63rem; padding: 2px 6px; border-radius: 10px;
  border: 1px solid #d1d5db; background: #fff; color: #6b7280;
  cursor: pointer; white-space: nowrap;
}
.req-chip:hover { border-color: #2563eb; color: #2563eb; }
.req-chip.placed {
  background: #dcfce7; border-color: #86efac; color: #15803d; font-weight: 600;
}
.req-chip.placed::before { content: "✓ "; }

/* OR groups — the MATH vs BAAS fork */
.alt-wrap { display: flex; align-items: stretch; gap: 5px; }
.alt-option {
  flex: 1; border: 1px solid #e5e7eb; border-radius: 5px;
  padding: 5px 6px; background: #fff; transition: opacity .2s;
}
.alt-option.inactive { opacity: .35; }
.alt-option.satisfied { border-color: #86efac; background: #f0fdf4; }
.alt-label { font-size: .63rem; font-weight: 700; color: #6b7280; margin-bottom: 4px; }
.alt-option.satisfied .alt-label { color: #15803d; }
.alt-or {
  align-self: center; font-size: .6rem; font-weight: 700; color: #9ca3af;
  background: #f3f4f6; border-radius: 9px; padding: 2px 5px; white-space: nowrap;
}
.alt-option .req-chips { flex-direction: column; align-items: flex-start; }

/* ── Toast ───────────────────────────────────────────────── */
#toast-container { z-index: 9999; }

/* ── Library-failed-to-load banner ───────────────────────── */
.lib-warning {
  background: #fef2f2; color: #991b1b; border-bottom: 1px solid #fecaca;
  font-size: .78rem; padding: 7px 14px; line-height: 1.4;
}