:root {
  --bg: #0b0f14;
  --bg-2: #101720;
  --panel: #111a24;
  --panel-2: #152131;
  --text: #e6edf6;
  --muted: #9aa7b7;
  --accent: #25d1b2;
  --accent-2: #f5b85b;
  --danger: #e74c4c;
  --line: rgba(255, 255, 255, 0.08);
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Spectral", serif;
  background: radial-gradient(circle at 10% 10%, #142233 0%, transparent 40%),
    radial-gradient(circle at 90% 0%, #1f2b3a 0%, transparent 35%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  color: var(--text);
  min-height: 100vh;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.2;
  pointer-events: none;
  z-index: 0;
}

.app {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 24px 60px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
  gap: 24px;
  align-items: center;
  margin-bottom: 24px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.7rem;
  color: var(--muted);
  font-family: "JetBrains Mono", monospace;
}

h1 {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(2.4rem, 4vw, 3.2rem);
  margin: 10px 0 12px;
}

.subtitle {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 52ch;
}

.hero-card {
  background: linear-gradient(135deg, var(--panel), var(--panel-2));
  border: 1px solid var(--line);
  padding: 20px;
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.stat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: "JetBrains Mono", monospace;
  margin-bottom: 12px;
}

.stat-label {
  color: var(--muted);
}

.stat-value {
  font-size: 1.4rem;
  color: var(--accent);
}

.progress {
  background: #0a1118;
  border-radius: 999px;
  height: 10px;
  overflow: hidden;
  margin-bottom: 14px;
}

.progress-bar {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), #7be8d5);
  transition: width 0.3s ease;
}

.progress-bar.dsa {
  background: linear-gradient(90deg, #25d1b2, #4ce4c6);
}

.progress-bar.math {
  background: linear-gradient(90deg, #f5b85b, #ffd08a);
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  background: rgba(37, 209, 178, 0.15);
  color: var(--accent);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-family: "JetBrains Mono", monospace;
}

.controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.control-group {
  background: rgba(17, 26, 36, 0.9);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 16px;
}

.control-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  color: var(--muted);
  display: block;
  margin-bottom: 10px;
}

.buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.btn {
  background: var(--accent);
  border: none;
  color: #021313;
  padding: 8px 14px;
  border-radius: 999px;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(37, 209, 178, 0.18);
}

.btn.ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

.btn.ghost.active {
  background: rgba(37, 209, 178, 0.16);
  color: var(--accent);
  border-color: rgba(37, 209, 178, 0.45);
}

.btn.danger {
  background: transparent;
  color: var(--danger);
  border: 1px solid rgba(231, 76, 76, 0.4);
}

.commit {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}

.card {
  background: rgba(17, 26, 36, 0.92);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px;
  box-shadow: var(--shadow);
}

.card-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.card h2 {
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.2rem;
  margin: 0;
}

.section-progress {
  font-family: "JetBrains Mono", monospace;
  color: var(--accent-2);
  font-size: 0.85rem;
}

.card-note {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 0.92rem;
}

.checklist {
  display: grid;
  gap: 14px;
}

.item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 14px;
  border-radius: 12px;
  background: rgba(11, 15, 20, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.item.header {
  grid-template-columns: 1fr;
  background: rgba(21, 33, 49, 0.85);
  border: 1px solid rgba(37, 209, 178, 0.2);
  align-items: start;
}

.item.header h3 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1rem;
}

.item.header p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.item input {
  accent-color: var(--accent);
  transform: scale(1.1);
  margin-top: 0;
}

.item-content {
  display: grid;
  gap: 6px;
}

.item .title {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
}

.item .explain {
  margin: 6px 0 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.item .meta {
  font-family: "JetBrains Mono", monospace;
  color: var(--muted);
  font-size: 0.7rem;
}

.company-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: flex-start;
}

.company-pill {
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(37, 209, 178, 0.12);
  color: var(--accent);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
}

.timeline {
  display: grid;
  gap: 12px;
}

.timeline-block {
  padding: 12px;
  border-radius: 12px;
  background: rgba(11, 15, 20, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.timeline-block h3 {
  margin: 0 0 6px;
  font-size: 1rem;
  font-family: "Space Grotesk", sans-serif;
}

.timeline-block p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.footer {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  color: var(--muted);
}

.footer .links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.footer a {
  color: var(--accent-2);
  text-decoration: none;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
}

.footer a:hover {
  text-decoration: underline;
}

.hidden {
  display: none !important;
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }
}

.day-card {
  background: rgba(11, 15, 20, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 14px;
  padding: 14px;
  display: grid;
  gap: 10px;
}

.day-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.day-title {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
}

.day-tasks {
  display: grid;
  gap: 10px;
}

.day-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.topic-pill {
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(37, 209, 178, 0.14);
  color: var(--accent);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
}

.topic-pill.alt {
  background: rgba(245, 184, 91, 0.16);
  color: var(--accent-2);
}

.topic-pill.type {
  background: rgba(122, 136, 255, 0.18);
  color: #b7c0ff;
}

.subtask {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 10px;
  align-items: start;
  padding: 10px;
  border-radius: 10px;
  background: rgba(17, 26, 36, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.subtask input {
  accent-color: var(--accent);
  transform: scale(1.05);
  margin-top: 2px;
}

.subtask-title {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
}

.subtask-note {
  color: var(--muted);
  font-size: 0.85rem;
}

.subtask-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(245, 184, 91, 0.16);
  color: var(--accent-2);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  text-decoration: none;
  width: fit-content;
  margin-top: 6px;
}

.subtask-link:hover {
  background: rgba(245, 184, 91, 0.22);
}


@media (max-width: 900px) {
  .day-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .day-topics {
    justify-content: flex-start;
  }
}

:root {
  --bg: #06111b;
  --bg-2: #0a1824;
  --panel: rgba(14, 25, 38, 0.72);
  --panel-2: rgba(19, 36, 54, 0.74);
  --line: rgba(170, 210, 245, 0.12);
  --muted: #9ab0c6;
  --text: #eef6ff;
  --accent: #32d0b6;
  --accent-2: #f4be6f;
  --accent-3: #58a8ff;
  --shadow: 0 20px 60px rgba(2, 10, 18, 0.48);
}

.bg-grid {
  opacity: 0.12;
  background-size: 56px 56px;
}

h1 {
  background: linear-gradient(92deg, #eff8ff 8%, #b4fff0 38%, #ffdca3 72%, #eff8ff 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.02em;
}

.hero-card,
.control-group,
.card,
.day-card {
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-card {
  background: linear-gradient(150deg, rgba(20, 39, 57, 0.86), rgba(16, 29, 45, 0.7));
}

.control-group {
  background: linear-gradient(145deg, rgba(16, 30, 45, 0.82), rgba(11, 21, 34, 0.68));
}

.btn {
  box-shadow: 0 12px 26px rgba(4, 16, 26, 0.32);
}

.btn.ghost {
  background: rgba(255, 255, 255, 0.02);
  transition: transform 0.22s ease, border-color 0.22s ease, background-color 0.22s ease, color 0.22s ease;
}

.btn.ghost:hover {
  transform: translateY(-1px);
  border-color: rgba(50, 208, 182, 0.45);
  background: rgba(50, 208, 182, 0.08);
}

.btn.ghost.active {
  color: #dbfff8;
  background: linear-gradient(135deg, rgba(50, 208, 182, 0.26), rgba(88, 168, 255, 0.2));
  border-color: rgba(122, 228, 211, 0.64);
  box-shadow: 0 8px 20px rgba(50, 208, 182, 0.22);
}

.card {
  background: linear-gradient(150deg, rgba(15, 28, 42, 0.86), rgba(11, 22, 35, 0.7));
}

.day-card {
  background: linear-gradient(150deg, rgba(14, 25, 40, 0.88), rgba(10, 18, 30, 0.74));
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.day-card:hover {
  transform: translateY(-2px);
  border-color: rgba(107, 189, 255, 0.42);
  box-shadow: 0 20px 34px rgba(3, 13, 21, 0.45);
}

.topic-pill.type {
  background: linear-gradient(135deg, rgba(88, 168, 255, 0.26), rgba(109, 148, 255, 0.2));
  color: #d4e5ff;
}

.subtask {
  background: linear-gradient(145deg, rgba(20, 34, 50, 0.8), rgba(15, 26, 39, 0.72));
}

.subtask-link {
  background: rgba(244, 190, 111, 0.2);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, rgba(50, 208, 182, 0.65), rgba(88, 168, 255, 0.55));
  border-radius: 999px;
}

@media (max-width: 900px) {
  .app {
    padding: 28px 16px 44px;
  }

  .control-group {
    padding: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}

#masterList.snake-layout {
  display: grid;
  gap: 14px;
}

.snake-detail {
  position: sticky;
  top: 10px;
  z-index: 3;
  background: linear-gradient(145deg, rgba(13, 25, 39, 0.96), rgba(10, 20, 31, 0.92));
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  box-shadow: var(--shadow);
}

.snake-detail-title {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.02rem;
}

.snake-detail-meta {
  margin: 4px 0 8px;
  color: var(--muted);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.76rem;
}

.snake-detail-note {
  margin: 0 0 8px;
  color: var(--text);
  font-size: 0.9rem;
}

.snake-detail-tags {
  margin-top: 8px;
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
}

.snake-board-wrap {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(10, 18, 28, 0.72);
  padding: 10px;
  max-height: 70vh;
  overflow: auto;
}

.snake-board {
  display: grid;
  grid-template-columns: repeat(var(--snake-cols, 5), minmax(0, 1fr));
  gap: 10px;
}

.snake-node {
  min-height: 148px;
  padding: 10px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-rows: auto auto auto auto;
  align-items: start;
  gap: 6px 8px;
  cursor: pointer;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  overflow: hidden;
}

.snake-node-head {
  grid-column: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.snake-node .snake-day-num {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  color: var(--muted);
  min-width: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.snake-type {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.66rem;
  text-transform: uppercase;
  padding: 2px 7px;
  border-radius: 999px;
  background: rgba(88, 168, 255, 0.16);
  color: #cfe4ff;
}

.snake-node[data-type="dsa"] .snake-type {
  background: rgba(50, 208, 182, 0.2);
  color: #bdf8ec;
}

.snake-node[data-type="math"] .snake-type {
  background: rgba(244, 190, 111, 0.2);
  color: #ffe4b9;
}

.snake-node .snake-task-label {
  grid-column: 1 / -1;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  font-size: 0.88rem;
  line-height: 1.28;
  color: var(--text);
  min-width: 0;
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.snake-node[data-type="dsa"] .snake-task-label {
  color: var(--accent);
}

.snake-node[data-type="math"] .snake-task-label {
  color: var(--accent-2);
}

.snake-mini-tags {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.snake-mini-tag {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.64rem;
  color: var(--muted);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 999px;
  padding: 2px 7px;
  min-width: 0;
  max-width: 100%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.snake-explain {
  grid-column: 1 / -1;
  color: var(--muted);
  font-size: 0.75rem;
  line-height: 1.35;
  min-width: 0;
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.snake-check {
  grid-row: 1;
  grid-column: 2;
  margin-top: 2px;
  transform: scale(1.02);
}

.snake-node.checked {
  opacity: 0.72;
}

.snake-node.active {
  border-color: rgba(88, 168, 255, 0.72);
  box-shadow: 0 0 0 1px rgba(88, 168, 255, 0.5) inset;
}

@media (max-width: 900px) {
  .snake-board {
    grid-template-columns: repeat(var(--snake-cols, 3), minmax(0, 1fr));
  }

  .snake-board-wrap {
    max-height: 68vh;
    padding: 8px;
  }

  .snake-node {
    min-height: 134px;
    padding: 9px;
  }

  .snake-detail {
    position: static;
  }

  .snake-node .snake-task-label {
    font-size: 0.82rem;
    -webkit-line-clamp: 2;
  }

  .snake-explain {
    display: none;
  }
}