*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #e9e9e9;
  --border: #000;
  --purple: #6d28d9;
  --teal: #0d9488;
  --orange: #f97316;
  --green: #16a34a;
  --done-bg: #dcfce7;
  --learning-bg: #fff7ed;
  --node-border: 2px solid #000;
  --panel-w: 380px;
  --accent: var(--purple);
}

body {
  font-family: "Space Mono", monospace;
  background: var(--bg);
  color: #000;
  min-height: 100vh;
  overflow-x: hidden;
}

/* NAV */
.nav {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
  border-bottom: 2px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 100;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.nav-back {
  font-size: 0.75rem;
  color: #000;
  text-decoration: none;
  border: 1px solid #000;
  padding: 0.25rem 0.6rem;
  transition: background 0.15s;
}
.nav-back:hover {
  background: #000;
  color: var(--bg);
}
.nav-title {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  flex: 1;
  min-width: 0;
}

/* HERO */
.hero {
  border-bottom: 2px solid var(--border);
  padding: 2rem 1.25rem 1.5rem;
}
.hero-heading {
  font-family: "Bebas Neue", sans-serif;
  font-size: clamp(3rem, 8vw, 6rem);
  line-height: 0.9;
  letter-spacing: 0.02em;
  margin-bottom: 1rem;
}
.hero-sub {
  font-size: 0.75rem;
  color: #444;
  margin-bottom: 1.5rem;
  max-width: 520px;
}
.progress-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.progress-bar-outer {
  flex: 1;
  min-width: 160px;
  height: 14px;
  border: 2px solid #000;
  background: #fff;
  position: relative;
  overflow: hidden;
}
.progress-bar-inner {
  height: 100%;
  background: var(--accent);
  transition: width 0.4s ease;
  width: 0%;
}
.progress-stats {
  font-size: 0.7rem;
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
}
.pstat {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.pstat-n {
  font-weight: 700;
  font-size: 1.1rem;
}
.pstat-l {
  font-size: 0.65rem;
  color: #555;
}

/* TOOLBAR */
.toolbar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  border-bottom: 2px solid var(--border);
  flex-wrap: wrap;
}
.search-input {
  font-family: "Space Mono", monospace;
  font-size: 0.75rem;
  border: 2px solid #000;
  background: #fff;
  padding: 0.4rem 0.75rem;
  outline: none;
  width: 220px;
}
.search-input:focus {
  background: #f5f5f5;
}
.btn {
  font-family: "Space Mono", monospace;
  font-size: 0.7rem;
  font-weight: 700;
  border: 2px solid #000;
  background: var(--bg);
  padding: 0.35rem 0.75rem;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}
.btn:hover {
  background: #000;
  color: var(--bg);
}
.btn.active {
  background: #000;
  color: var(--bg);
}
.legend {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-left: auto;
  flex-wrap: wrap;
}
.legend-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.65rem;
}
.legend-dot {
  width: 10px;
  height: 10px;
  border: 1.5px solid #000;
  border-radius: 50%;
}
.ld-purple {
  background: var(--purple);
}
.ld-teal {
  background: var(--teal);
}
.ld-orange {
  background: var(--orange);
}
.ld-green {
  background: var(--green);
}

/* CANVAS */
.rm-canvas-wrap {
  position: relative;
  overflow-x: auto;
  overflow-y: visible;
  padding: 2rem 1.25rem 3rem;
}
.rm-canvas {
  display: flex;
  gap: 0;
  min-width: max-content;
  position: relative;
}
svg.rm-connectors {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: visible;
}
svg.rm-connectors path {
  fill: none;
  stroke: #888;
  stroke-width: 1.5;
  stroke-dasharray: 4 3;
}

/* COLUMN */
.rm-column {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 180px;
  min-width: 180px;
  padding: 0 0.5rem;
  position: relative;
}
.rm-col-header {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: #000;
  color: var(--bg);
  padding: 0.35rem 0.6rem;
  width: 100%;
  text-align: center;
  margin-bottom: 0.75rem;
  border: 2px solid #000;
}
.rm-col-num {
  font-size: 0.5rem;
  opacity: 0.6;
  display: block;
  margin-bottom: 0.1rem;
}

/* NODE */
.rm-node {
  width: 100%;
  border: var(--node-border);
  background: #fff;
  padding: 0.5rem 0.6rem;
  margin-bottom: 0.5rem;
  cursor: pointer;
  transition:
    transform 0.12s,
    box-shadow 0.12s,
    opacity 0.2s;
  position: relative;
}
.rm-node:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 #000;
}
.rm-node.recommended {
  border-left: 4px solid var(--purple);
}
.rm-node.alt {
  border-left: 4px solid var(--teal);
}
.rm-node.status-learning {
  background: var(--learning-bg);
}
.rm-node.status-done {
  background: var(--done-bg);
}
.rm-node.faded {
  opacity: 0.2;
  pointer-events: none;
}
.rm-node-label {
  font-size: 0.68rem;
  font-weight: 700;
  line-height: 1.3;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}
.rm-node-label .status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  flex-shrink: 0;
}
.status-dot.learning {
  background: var(--orange);
}
.status-dot.done {
  background: var(--green);
}
.rm-node-sub {
  font-size: 0.58rem;
  color: #555;
  margin-top: 0.2rem;
}

/* DETAIL PANEL */
.detail-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.25);
  z-index: 200;
}
.detail-overlay.open {
  display: block;
}
.detail-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: var(--panel-w);
  height: 100vh;
  background: var(--bg);
  border-left: 2px solid #000;
  transform: translateX(100%);
  transition: transform 0.25s ease;
  z-index: 201;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.detail-panel.open {
  transform: translateX(0);
}
.panel-header {
  padding: 1rem;
  border-bottom: 2px solid #000;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}
.panel-close {
  font-family: "Space Mono", monospace;
  font-size: 1rem;
  font-weight: 700;
  border: 2px solid #000;
  background: none;
  cursor: pointer;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.panel-close:hover {
  background: #000;
  color: var(--bg);
}
.panel-title-wrap {
  flex: 1;
}
.panel-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.3;
}
.panel-type-badge {
  font-size: 0.6rem;
  padding: 0.15rem 0.4rem;
  border: 1px solid #000;
  display: inline-block;
  margin-top: 0.3rem;
}
.type-recommended {
  border-color: var(--accent);
  color: var(--accent);
}
.type-alt {
  border-color: var(--teal);
  color: var(--teal);
}
.panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
}
.panel-section {
  margin-bottom: 1.25rem;
}
.panel-section-title {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-bottom: 1px solid #000;
  padding-bottom: 0.3rem;
  margin-bottom: 0.6rem;
}
.panel-desc {
  font-size: 0.72rem;
  line-height: 1.6;
  color: #222;
}
.chip-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.chip {
  font-size: 0.6rem;
  border: 1px solid #000;
  padding: 0.2rem 0.5rem;
  background: #fff;
}
.tools-list {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.tool-item {
  font-size: 0.68rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.tool-item::before {
  content: "▸";
  opacity: 0.5;
}
.resources-list {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.res-item {
  font-size: 0.65rem;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px dashed var(--accent);
  display: inline-block;
  width: fit-content;
}
.res-item:hover {
  color: #000;
  border-color: #000;
}
.panel-tip {
  font-size: 0.65rem;
  font-style: italic;
  color: #555;
  background: #fff;
  border: 1px dashed #000;
  padding: 0.5rem 0.6rem;
  line-height: 1.5;
}
.panel-actions {
  padding: 1rem;
  border-top: 2px solid #000;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}
.btn-action {
  font-family: "Space Mono", monospace;
  font-size: 0.65rem;
  font-weight: 700;
  border: 2px solid #000;
  background: var(--bg);
  padding: 0.4rem 0.75rem;
  cursor: pointer;
  flex: 1;
  text-align: center;
}
.btn-action:hover {
  background: #000;
  color: var(--bg);
}
.btn-action.learning-active {
  background: var(--orange);
  border-color: var(--orange);
  color: #fff;
}
.btn-action.done-active {
  background: var(--green);
  border-color: var(--green);
  color: #fff;
}
.btn-action.reset-btn {
  flex: none;
  border-style: dashed;
}

/* LIST VIEW (mobile accordion) */
.rm-canvas.list-view {
  flex-direction: column;
  min-width: unset;
}
.rm-canvas.list-view .rm-column {
  width: 100%;
  min-width: unset;
}
.rm-canvas.list-view .rm-connectors {
  display: none;
}

/* FOOTER */
.footer {
  border-top: 2px solid #000;
  padding: 1rem 1.25rem;
  font-size: 0.65rem;
  color: #555;
  text-align: center;
}
.footer a {
  color: #000;
}

@media (max-width: 640px) {
  .detail-panel {
    width: 100%;
    top: auto;
    bottom: 0;
    height: 75vh;
    border-left: none;
    border-top: 2px solid #000;
    transform: translateY(100%);
  }
  .detail-panel.open {
    transform: translateY(0);
  }
  .legend {
    margin-left: 0;
  }
  .search-input {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .toolbar {
    flex-direction: column;
    align-items: stretch;
  }
  .toolbar-row1 {
    display: flex;
    gap: 0.75rem;
  }
  .search-input {
    flex: 1;
    width: auto;
  }
  .legend {
    margin-left: 0;
    justify-content: flex-start;
  }
}

@media (max-width: 768px) {
  .rm-node {
    padding: 0.75rem 0.8rem;
    margin-bottom: 0.65rem;
  }
  .rm-node-label {
    font-size: 0.75rem;
  }
}

@media (max-width: 640px) {
  .rm-canvas-wrap {
    padding: 1rem 0.75rem 2rem;
  }
}

.rm-canvas.list-view .rm-column {
  padding: 0;
  margin-bottom: 1rem;
}
.rm-canvas.list-view .rm-col-header {
  margin-bottom: 0.5rem;
}

@media (max-width: 640px) {
  .detail-panel {
    height: 85vh;
  }
}

/* SDLC SECTION */
.sdlc-section {
  border-bottom: 2px solid var(--border);
  padding: 2rem 1.25rem 1.5rem;
  background: #e9e9e9;
}
.sdlc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.sdlc-title {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.sdlc-subtitle {
  font-size: 0.65rem;
  color: #555;
  margin-top: 0.2rem;
}
.sdlc-diagram-wrap {
  width: 100%;
  max-width: 800px;
  position: relative;
}
#sdlc-canvas {
  display: block;
  width: 100%;
  height: auto;
}
#sdlc-labels {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.sdlc-label {
  position: absolute;
  transform: translate(-50%, -50%);
  text-align: center;
  font-family: "Space Mono", monospace;
  line-height: 1.3;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.sdlc-label.visible {
  opacity: 1;
}
.sdlc-label-name {
  display: block;
  font-weight: 700;
  color: #111;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.sdlc-label-tool {
  display: block;
  color: #555;
  letter-spacing: 0.02em;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.devops-mode .sdlc-label-tool {
  opacity: 1;
}
.sdlc-label-auto {
  display: inline-block;
  color: #7c3aed;
  opacity: 0;
  transition: opacity 0.4s 0.15s ease;
}
.devops-mode .sdlc-label-auto {
  opacity: 1;
}
@media (max-width: 640px) {
  .sdlc-section {
    padding: 1rem 0.75rem 1.25rem;
  }
}