/* ============================================================
   Waypoint — AI Roadmapping
   Palette: deep space navy + electric teal + violet accent
   ============================================================ */

:root {
  --bg-0: #080a10;
  --bg-1: #0d1017;
  --bg-2: #12151d;
  --panel: rgba(22, 26, 36, 0.6);
  --panel-solid: #161a24;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.16);

  --text-0: #eef1f6;
  --text-1: #aab2c5;
  --text-2: #6b7386;

  --accent: #56e8cf;
  --accent-dim: rgba(86, 232, 207, 0.16);
  --violet: #8b7fff;
  --violet-dim: rgba(139, 127, 255, 0.16);
  --amber: #f5b942;

  --phase-0: #56e8cf;
  --phase-1: #8b7fff;
  --phase-2: #f5b942;

  --radius-l: 20px;
  --radius-m: 14px;
  --radius-s: 8px;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg-0);
  color: var(--text-0);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

body {
  background-image:
    radial-gradient(ellipse 800px 500px at 15% -10%, rgba(86, 232, 207, 0.08), transparent 60%),
    radial-gradient(ellipse 700px 500px at 100% 10%, rgba(139, 127, 255, 0.07), transparent 60%);
  background-attachment: fixed;
}

button { font-family: inherit; }
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

/* ---------------- Layout shell ---------------- */

.app {
  display: grid;
  grid-template-columns: 320px 1fr;
  height: 100vh;
  overflow: hidden;
}

/* ---------------- Sidebar ---------------- */

.sidebar {
  display: flex;
  flex-direction: column;
  background: rgba(13, 16, 23, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-right: 1px solid var(--border);
  height: 100vh;
  overflow: hidden;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 22px 24px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.brand-mark {
  color: var(--accent);
  font-size: 20px;
  filter: drop-shadow(0 0 8px rgba(86, 232, 207, 0.5));
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: 0.02em;
}

.sidebar-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px 8px;
}

.sidebar-scroll::-webkit-scrollbar { width: 6px; }
.sidebar-scroll::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }

.panel {
  margin-bottom: 28px;
}

.panel-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-2);
  margin: 0 0 10px;
  font-weight: 500;
}

.panel-hint {
  font-size: 12.5px;
  color: var(--text-2);
  line-height: 1.5;
  margin: 0 0 12px;
}

.prompt-input {
  width: 100%;
  resize: vertical;
  min-height: 120px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  color: var(--text-0);
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 13.5px;
  line-height: 1.5;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.prompt-input::placeholder { color: var(--text-2); }

.prompt-input:focus {
  outline: none;
  border-color: rgba(86, 232, 207, 0.5);
  background: rgba(255, 255, 255, 0.045);
}

.field {
  margin-bottom: 16px;
}

.field label {
  display: block;
  font-size: 12px;
  color: var(--text-1);
  margin-bottom: 7px;
  font-weight: 500;
}

.field select {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  color: var(--text-0);
  border-radius: var(--radius-s);
  padding: 9px 12px;
  font-size: 13px;
  font-family: var(--font-body);
  cursor: pointer;
  transition: border-color 0.2s var(--ease);
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--text-2) 50%), linear-gradient(135deg, var(--text-2) 50%, transparent 50%);
  background-position: calc(100% - 16px) center, calc(100% - 11px) center;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
}

.field select:focus { outline: none; border-color: rgba(86, 232, 207, 0.5); }

.segmented {
  display: flex;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius-s);
  padding: 3px;
  gap: 2px;
}

.segmented button {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-2);
  font-size: 12px;
  padding: 7px 6px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s var(--ease);
}

.segmented button.active {
  background: var(--accent-dim);
  color: var(--accent);
  font-weight: 500;
}

.segmented button:hover:not(.active) {
  color: var(--text-0);
}

.sidebar-footer {
  padding: 18px 24px 22px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.generate-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, var(--accent), #38c9b0);
  color: #06110e;
  border: none;
  border-radius: var(--radius-m);
  padding: 13px 18px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-display);
  cursor: pointer;
  transition: transform 0.15s var(--ease), box-shadow 0.15s var(--ease), opacity 0.15s var(--ease);
  box-shadow: 0 8px 24px -8px rgba(86, 232, 207, 0.5);
}

.generate-btn:hover { transform: translateY(-1px); box-shadow: 0 10px 28px -6px rgba(86, 232, 207, 0.6); }
.generate-btn:active { transform: translateY(0); }
.generate-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-glyph { transition: transform 0.2s var(--ease); }
.generate-btn:hover .btn-glyph { transform: translateX(3px); }

.status-line {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-2);
  text-align: center;
  margin: 12px 0 0;
  letter-spacing: 0.02em;
}

/* ---------------- Canvas ---------------- */

.canvas-wrap {
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.canvas-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 26px 32px 18px;
  flex-shrink: 0;
  gap: 20px;
}

.canvas-title h1 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  margin: 0 0 4px;
  letter-spacing: -0.01em;
  transition: opacity 0.25s var(--ease);
}

.canvas-subtitle {
  color: var(--text-2);
  font-size: 13px;
  margin: 0;
  max-width: 560px;
  line-height: 1.5;
}

.canvas-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.icon-btn {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-1);
  font-size: 15px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s var(--ease);
}

.icon-btn:hover { border-color: var(--border-strong); color: var(--text-0); background: rgba(255,255,255,0.06); }

.zoom-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 9px;
  padding: 3px;
  background: rgba(255, 255, 255, 0.03);
}

.zoom-controls .icon-btn { border: none; background: transparent; width: 28px; height: 28px; }
.zoom-level { font-family: var(--font-mono); font-size: 11px; color: var(--text-2); min-width: 36px; text-align: center; }

.canvas-viewport {
  position: relative;
  flex: 1;
  margin: 0 32px 20px;
  border-radius: var(--radius-l);
  border: 1px solid var(--border);
  overflow: hidden;
  background:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px),
    var(--bg-1);
  background-size: 28px 28px, 28px 28px, auto;
  cursor: grab;
}

.canvas-viewport.grabbing { cursor: grabbing; }

.canvas-surface {
  position: absolute;
  top: 0;
  left: 0;
  width: 3000px;
  height: 2200px;
  transform-origin: 0 0;
  transition: transform 0.35s var(--ease);
}

.connector-layer {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}

.node-layer {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
}

/* Roadmap node cards */

.rm-node {
  position: absolute;
  width: 236px;
  padding: 16px 16px 14px;
  border-radius: var(--radius-m);
  background: var(--panel);
  border: 1px solid var(--border);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  cursor: pointer;
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
  animation: nodeIn 0.5s var(--ease) both;
}

@keyframes nodeIn {
  from { opacity: 0; transform: translateY(10px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.rm-node:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -12px rgba(0,0,0,0.6);
}

.rm-node.selected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent), 0 14px 30px -12px rgba(86,232,207,0.35);
}

.rm-node-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 9px;
}

.rm-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: 0 0 8px currentColor;
}

.rm-node[data-phase="0"] .rm-dot { background: var(--phase-0); color: var(--phase-0); }
.rm-node[data-phase="1"] .rm-dot { background: var(--phase-1); color: var(--phase-1); }
.rm-node[data-phase="2"] .rm-dot { background: var(--phase-2); color: var(--phase-2); }

.rm-phase-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-2);
}

.rm-node-title {
  font-family: var(--font-display);
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.35;
  margin: 0 0 6px;
  color: var(--text-0);
}

.rm-node-desc {
  font-size: 12px;
  color: var(--text-1);
  line-height: 1.5;
  margin: 0;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.rm-node-footer {
  margin-top: 10px;
  padding-top: 9px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--text-2);
  display: flex;
  justify-content: space-between;
}

.connector-path {
  fill: none;
  stroke: url(#connectorGradient);
  stroke-width: 1.6;
  opacity: 0.55;
}

.connector-flow {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
  stroke-dasharray: 6 10;
  opacity: 0.85;
  animation: flowDash 1.4s linear infinite;
}

@keyframes flowDash {
  to { stroke-dashoffset: -32; }
}

/* Empty / loading / error states */

.empty-state, .loading-state, .error-state {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 6px;
  pointer-events: none;
}

.empty-glyph {
  font-size: 30px;
  color: var(--text-2);
  margin-bottom: 6px;
  opacity: 0.6;
}

.empty-state h3, .error-state h3 {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 600;
  color: var(--text-1);
  margin: 0;
}

.empty-state p, .error-state p {
  font-size: 13px;
  color: var(--text-2);
  max-width: 320px;
  margin: 0;
  line-height: 1.5;
}

.loading-orbit {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.loading-orbit span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
  animation: bounce 1s var(--ease) infinite;
}

.loading-orbit span:nth-child(2) { animation-delay: 0.12s; background: var(--violet); }
.loading-orbit span:nth-child(3) { animation-delay: 0.24s; background: var(--amber); }

@keyframes bounce {
  0%, 80%, 100% { transform: translateY(0); opacity: 0.5; }
  40% { transform: translateY(-10px); opacity: 1; }
}

#loadingText {
  font-size: 13px;
  color: var(--text-1);
  font-family: var(--font-mono);
}

.hidden { display: none !important; }

.error-state {
  pointer-events: all;
}

.retry-btn {
  margin-top: 12px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-strong);
  color: var(--text-0);
  padding: 8px 18px;
  border-radius: var(--radius-s);
  font-size: 12.5px;
  cursor: pointer;
  pointer-events: all;
  transition: background 0.15s var(--ease);
}
.retry-btn:hover { background: rgba(255,255,255,0.09); }

.legend {
  display: flex;
  gap: 18px;
  padding: 0 32px 20px;
  flex-shrink: 0;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--text-2);
  font-family: var(--font-mono);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 6px currentColor;
}
.dot.phase-0 { background: var(--phase-0); color: var(--phase-0); }
.dot.phase-1 { background: var(--phase-1); color: var(--phase-1); }
.dot.phase-2 { background: var(--phase-2); color: var(--phase-2); }

/* ---------------- Detail drawer ---------------- */

.detail-drawer {
  position: fixed;
  top: 0;
  right: -380px;
  width: 340px;
  height: 100vh;
  background: rgba(16, 19, 27, 0.85);
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
  border-left: 1px solid var(--border-strong);
  padding: 60px 28px 28px;
  transition: right 0.35s var(--ease);
  z-index: 20;
}

.detail-drawer.open { right: 0; }

.close-drawer {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-1);
  font-size: 16px;
  cursor: pointer;
  transition: all 0.15s var(--ease);
}
.close-drawer:hover { background: rgba(255,255,255,0.06); color: var(--text-0); }

.detail-phase {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 10px;
}

.detail-drawer h2 {
  font-family: var(--font-display);
  font-size: 21px;
  line-height: 1.3;
  margin: 0 0 14px;
}

.detail-desc {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--text-1);
  margin: 0 0 26px;
}

.detail-meta {
  display: flex;
  flex-direction: column;
  gap: 16px;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

.meta-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-2);
  margin-bottom: 4px;
}

.meta-value {
  font-size: 13.5px;
  color: var(--text-0);
}

/* ---------------- Responsive ---------------- */

@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  .sidebar { height: auto; max-height: 46vh; border-right: none; border-bottom: 1px solid var(--border); }
  .canvas-wrap { height: 54vh; }
  .detail-drawer { width: 88vw; right: -100vw; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}