/* ====== THEME TOKENS ====== */
:root {
  --bg: #f5f7fb;
  --bg-elev: #ffffff;
  --bg-soft: #eef1f7;
  --border: #e3e7ef;
  --border-strong: #c9d0dd;
  --text: #1a1f2e;
  --text-muted: #5a6478;
  --text-soft: #8a93a6;
  --primary: #5b6cff;
  --primary-hover: #4a5ae8;
  --primary-soft: #eef0ff;
  --accent: #ff6b9b;
  --danger: #e0445e;
  --success: #1f9d6c;
  --warn: #d98a18;
  --shadow-sm: 0 1px 2px rgba(20,30,55,.06), 0 1px 3px rgba(20,30,55,.04);
  --shadow-md: 0 4px 14px rgba(20,30,55,.08), 0 2px 6px rgba(20,30,55,.05);
  --shadow-lg: 0 18px 48px rgba(20,30,55,.18);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 18px;
  --transition: 160ms cubic-bezier(.4,.2,.2,1);

  /* Block accent colors */
  --c-keyPartners:        #ffd6a5;
  --c-keyActivities:      #fdffb6;
  --c-keyResources:       #caffbf;
  --c-valueProps:         #ffadad;
  --c-customerRel:        #bdb2ff;
  --c-channels:           #a0c4ff;
  --c-customerSeg:        #ffc6ff;
  --c-costStructure:      #d8e2dc;
  --c-revenueStreams:     #b5ead7;
}

[data-theme="dark"] {
  --bg: #0f1320;
  --bg-elev: #1a2030;
  --bg-soft: #232b3e;
  --border: #2a3349;
  --border-strong: #3a4564;
  --text: #e9eef8;
  --text-muted: #a3acc2;
  --text-soft: #6f7a93;
  --primary: #7d8aff;
  --primary-hover: #93a0ff;
  --primary-soft: #232b50;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
  --shadow-md: 0 4px 14px rgba(0,0,0,.45);
  --shadow-lg: 0 18px 48px rgba(0,0,0,.6);

  --c-keyPartners:        #6f5530;
  --c-keyActivities:      #6c6e2e;
  --c-keyResources:       #3e6b3a;
  --c-valueProps:         #75363e;
  --c-customerRel:        #4a3f7d;
  --c-channels:           #324d80;
  --c-customerSeg:        #6e3c75;
  --c-costStructure:      #3d4a4a;
  --c-revenueStreams:     #305548;
}

/* ====== RESET / BASE ====== */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
button { font-family: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }
input:focus-visible, textarea:focus-visible, button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.muted { color: var(--text-muted); font-size: 13px; }
.optional { color: var(--text-soft); font-style: normal; font-weight: 400; }

.page { min-height: 100vh; display: flex; flex-direction: column; }

/* ====== TOP BAR ====== */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 20;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
}
.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: var(--shadow-sm);
}
.brand-compact { flex: 1; min-width: 0; }
.title-input {
  border: 0;
  background: transparent;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  width: 100%;
  max-width: 380px;
  padding: 4px 8px;
  border-radius: 6px;
}
.title-input:hover, .title-input:focus { background: var(--bg-soft); }

.bar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ====== BUTTONS ====== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 40px;
  padding: 0 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--bg-elev);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), border-color var(--transition);
}
.btn:hover { background: var(--bg-soft); }
.btn:active { transform: translateY(1px); }
.btn-sm { height: 32px; padding: 0 12px; font-size: 13px; }
.btn-primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn-secondary {
  background: var(--bg-soft);
  border-color: var(--border-strong);
}
.btn-danger {
  background: var(--danger);
  color: white;
  border-color: var(--danger);
}
.btn-danger:hover { filter: brightness(1.05); }

.icon-btn {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: background var(--transition);
}
.icon-btn:hover { background: var(--bg-soft); }

/* Theme icon visibility */
.icon-sun, .icon-moon { display: none; }
[data-theme="light"] .icon-moon { display: block; }
[data-theme="dark"]  .icon-sun  { display: block; }

/* ====== HERO / LANDING ====== */
.hero {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px 24px;
  background:
    radial-gradient(circle at 20% 10%, rgba(91,108,255,.10), transparent 50%),
    radial-gradient(circle at 90% 80%, rgba(255,107,155,.10), transparent 50%);
}
.hero-inner {
  width: 100%;
  max-width: 1080px;
  text-align: center;
}
.hero-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  margin: 0 0 12px;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.accent {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-tagline {
  font-size: clamp(16px, 2vw, 19px);
  color: var(--text-muted);
  margin: 0 auto 40px;
  max-width: 600px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  max-width: 760px;
  margin: 0 auto;
  text-align: left;
}
.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-md);
}
.card h2 { margin: 0 0 4px; font-size: 20px; }

.field {
  display: block;
  margin-top: 14px;
}
.field > span, .field > legend {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 6px;
}
.field input[type=text], .field textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-strong);
  background: var(--bg);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition), background var(--transition);
}
.field input[type=text]:focus, .field textarea:focus {
  border-color: var(--primary);
  background: var(--bg-elev);
}
.card .btn { margin-top: 18px; width: 100%; }

.config-warning {
  margin: 32px auto 0;
  max-width: 760px;
  padding: 14px 18px;
  background: #fff5e6;
  border: 1px solid #f0c987;
  color: #74521a;
  border-radius: var(--radius-sm);
  text-align: left;
  font-size: 14px;
}
[data-theme="dark"] .config-warning {
  background: #3a2e15;
  border-color: #6e571f;
  color: #f0c987;
}
.config-warning code {
  background: rgba(0,0,0,.08);
  padding: 1px 6px;
  border-radius: 4px;
}

.footer {
  text-align: center;
  padding: 20px;
  color: var(--text-soft);
  font-size: 13px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 8px;
}
.footer a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}
.footer a:hover { text-decoration: underline; }
.footer-sep { opacity: .5; }
@media (max-width: 480px) {
  .footer-sep { display: none; }
  .footer { flex-direction: column; gap: 4px; }
}

/* ====== BMC GRID ====== */
.bmc-grid {
  flex: 1;
  display: grid;
  gap: 12px;
  padding: 16px;
  grid-template-columns: repeat(10, 1fr);
  grid-template-rows: 1fr 1fr auto;
  grid-template-areas:
    "kp kp ka ka vp vp cr cr cs cs"
    "kp kp kr kr vp vp ch ch cs cs"
    "co co co co co rs rs rs rs rs";
  min-height: 0;
}
.block { display: flex; flex-direction: column; }
.block[data-id=keyPartners]      { grid-area: kp; --c: var(--c-keyPartners); }
.block[data-id=keyActivities]    { grid-area: ka; --c: var(--c-keyActivities); }
.block[data-id=keyResources]     { grid-area: kr; --c: var(--c-keyResources); }
.block[data-id=valueProps]       { grid-area: vp; --c: var(--c-valueProps); }
.block[data-id=customerRel]      { grid-area: cr; --c: var(--c-customerRel); }
.block[data-id=channels]         { grid-area: ch; --c: var(--c-channels); }
.block[data-id=customerSeg]      { grid-area: cs; --c: var(--c-customerSeg); }
.block[data-id=costStructure]    { grid-area: co; --c: var(--c-costStructure); }
.block[data-id=revenueStreams]   { grid-area: rs; --c: var(--c-revenueStreams); }

.block-inner {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 200px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.block-head {
  padding: 12px 14px 10px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, var(--c) 0%, transparent 220%);
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.block-title-wrap { flex: 1; min-width: 0; }
.block-title {
  margin: 0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 6px;
}
.block-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(0,0,0,.1);
  font-size: 11px;
  font-weight: 700;
}
[data-theme="dark"] .block-num { background: rgba(255,255,255,.15); }
.block-prompt {
  font-size: 12px;
  color: var(--text-muted);
  margin: 4px 0 0;
}
.block-actions { display: flex; gap: 4px; }
.block-add, .block-info {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  background: rgba(0,0,0,.06);
  border: 0;
  color: var(--text);
  cursor: pointer;
  transition: background var(--transition);
}
[data-theme="dark"] .block-add, [data-theme="dark"] .block-info { background: rgba(255,255,255,.08); }
.block-add:hover, .block-info:hover { background: rgba(0,0,0,.12); }
[data-theme="dark"] .block-add:hover, [data-theme="dark"] .block-info:hover { background: rgba(255,255,255,.16); }

.guidance {
  padding: 10px 14px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
}
.guidance ul { margin: 0; padding-left: 18px; }
.guidance li { margin: 2px 0; }

.notes-list {
  flex: 1;
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
  min-height: 80px;
}
.notes-list.drag-over { background: var(--primary-soft); }

.empty-state {
  color: var(--text-soft);
  font-size: 12px;
  text-align: center;
  padding: 16px 8px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-sm);
  background: var(--bg-soft);
}

/* ====== STICKY NOTE ====== */
.note {
  background: var(--c, #fff8a8);
  color: #1a1f2e;
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  box-shadow: var(--shadow-sm);
  cursor: grab;
  position: relative;
  border-left: 4px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition);
}
.note:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }
.note.dragging { opacity: .55; cursor: grabbing; }
.note[data-priority="high"]   { border-left-color: var(--danger); }
.note[data-priority="medium"] { border-left-color: var(--warn); }
.note[data-priority="low"]    { border-left-color: var(--success); }

.note-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}
.badge {
  background: rgba(0,0,0,.12);
  color: #1a1f2e;
  padding: 2px 6px;
  border-radius: 100px;
  font-weight: 700;
  font-size: 10px;
}
.badge-status[data-s=draft]      { background: rgba(0,0,0,.12); }
.badge-status[data-s=validate]   { background: #ffe4a3; }
.badge-status[data-s=confirmed]  { background: #b6f0c4; }

.note-title {
  font-weight: 700;
  font-size: 14px;
  margin: 0;
  line-height: 1.3;
  word-break: break-word;
}
.note-desc {
  font-size: 13px;
  margin: 4px 0 8px;
  color: rgba(26,31,46,.85);
  word-break: break-word;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.note-foot {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: rgba(26,31,46,.7);
}
.note-foot .author { font-weight: 600; }
.note-foot .spacer { flex: 1; }
.note-actions { display: flex; gap: 4px; }
.note-actions button {
  border: 0;
  background: rgba(0,0,0,.08);
  color: #1a1f2e;
  width: 26px;
  height: 26px;
  border-radius: 6px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}
.note-actions button:hover { background: rgba(0,0,0,.18); }
.note-actions .vote.voted { background: var(--primary); color: white; }
.vote-count { font-weight: 700; min-width: 14px; }

/* ====== PRESENCE ====== */
.presence {
  display: flex;
  gap: -8px;
  align-items: center;
}
.avatar {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: white;
  border: 2px solid var(--bg-elev);
  margin-left: -8px;
  box-shadow: var(--shadow-sm);
}
.avatar:first-child { margin-left: 0; }
.presence-more {
  margin-left: -8px;
  background: var(--bg-soft);
  color: var(--text);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 2px solid var(--bg-elev);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
}

/* ====== MODAL ====== */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}
.modal[hidden] { display: none; }
.modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(15, 19, 32, 0.5);
  backdrop-filter: blur(2px);
}
.modal-panel {
  position: relative;
  background: var(--bg-elev);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  max-width: 520px;
  max-height: calc(100vh - 48px);
  overflow: auto;
  border: 1px solid var(--border);
}
.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
}
.modal-head h3 { margin: 0; font-size: 17px; }
.modal-body { padding: 20px; }
.modal-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.modal-actions .spacer { flex: 1; }

.row-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
fieldset.field { border: 0; padding: 0; margin-top: 14px; }
.radio-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.radio-row label {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 13px;
  cursor: pointer;
}

/* Share modal */
.share-body {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  align-items: start;
}
.qr {
  width: 160px;
  height: 160px;
  background: white;
  padding: 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}
.qr img, .qr canvas { max-width: 100%; height: auto; }
.share-info { min-width: 0; }
.copy-row { display: flex; gap: 6px; }
.copy-row input {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--border-strong);
  background: var(--bg);
  border-radius: var(--radius-sm);
  font-size: 13px;
  min-width: 0;
}

/* ====== TOAST ====== */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg-elev);
  padding: 10px 18px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 600;
  box-shadow: var(--shadow-md);
  z-index: 1000;
  animation: toast-in 200ms ease-out;
}
@keyframes toast-in {
  from { opacity: 0; transform: translate(-50%, 12px); }
  to   { opacity: 1; transform: translate(-50%, 0); }
}

/* ====== RESPONSIVE ====== */
@media (max-width: 1080px) {
  .bmc-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: none;
    grid-template-areas: none;
  }
  .block { grid-area: auto !important; }
}
@media (max-width: 640px) {
  .top-bar { padding: 10px 12px; }
  .hero { padding: 32px 16px; }
  .bmc-grid { grid-template-columns: 1fr; padding: 10px; gap: 10px; }
  .block-inner { min-height: 160px; }
  .modal { padding: 0; align-items: stretch; }
  .modal-panel { max-width: none; max-height: 100vh; border-radius: 0; }
  .share-body { grid-template-columns: 1fr; }
  .qr { margin: 0 auto; }
  .row-2 { grid-template-columns: 1fr; }
  .title-input { font-size: 15px; }
  .bar-actions .btn-sm { padding: 0 10px; }
  #presence { display: none; }
}