:root {
  --page-bg: #edf0f4;
  --page-bg-deep: #e6e9ef;
  --surface: #ffffff;
  --surface-muted: #f6f7f9;
  --surface-soft: #f1f3f6;
  --border: #d7dce3;
  --border-strong: #bfc6cf;
  --text: #17191d;
  --muted: #5f6670;
  --muted-strong: #444b54;
  --primary: #d84452;
  --primary-hover: #be3141;
  --focus: rgba(61, 113, 255, 0.18);
  --shadow: 0 10px 24px rgba(28, 33, 40, 0.06);
  --font-heading: "Arial Black", "Trebuchet MS", "Segoe UI", sans-serif;
  --font-body: "Trebuchet MS", "Aptos", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--text);
  background: linear-gradient(180deg, #f5f6f8 0, var(--page-bg) 220px, var(--page-bg-deep) 100%);
}

button,
input,
textarea {
  font: inherit;
}

button {
  border: 0;
  cursor: pointer;
}

.site-header {
  background: linear-gradient(180deg, #24272c, #1d2024);
  border-bottom: 1px solid #14161a;
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.04);
}

.site-header-inner {
  max-width: 1540px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: linear-gradient(180deg, #ff6a75, #d84452);
  color: #ffffff;
  font-family: var(--font-heading);
  font-size: 0.9rem;
  letter-spacing: 0.08em;
}

.brand-eyebrow,
.panel-kicker {
  display: block;
  margin: 0 0 4px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-weight: 800;
}

.brand-eyebrow {
  color: rgba(255, 255, 255, 0.68);
}

.site-header h1 {
  margin: 0;
  color: #ffffff;
  font-size: 1.35rem;
  line-height: 1.1;
  font-family: var(--font-heading);
  letter-spacing: -0.03em;
}

.site-subtitle {
  margin: 2px 0 0;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.92rem;
}

.app-shell {
  max-width: 1540px;
  margin: 0 auto;
  padding: 22px 24px 36px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
}

.page-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding: 20px 24px;
  margin-bottom: 18px;
}

.page-head h2,
.panel h2,
.board-panel h2,
.pool-side h3,
.tier-side h3 {
  margin: 0;
  font-family: var(--font-heading);
  letter-spacing: -0.03em;
}

.page-head h2 {
  font-size: clamp(1.5rem, 2.2vw, 2rem);
  line-height: 1.08;
}

.page-head-note,
.panel-note,
.board-toolbar-note {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.5;
}

.quick-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.quick-steps li {
  min-width: 120px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface-muted);
  color: var(--muted-strong);
  font-size: 0.85rem;
  font-weight: 800;
  text-align: center;
  white-space: nowrap;
}

.panel-kicker {
  color: #7b838d;
}

.workspace {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr);
  gap: 18px;
}

.composer-panel {
  display: grid;
  gap: 16px;
  align-content: start;
}

.composer-panel .panel,
.board-panel {
  padding: 20px;
}

.board-panel {
  min-width: 0;
}

.panel-head,
.board-toolbar,
.hero-actions {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.input-label {
  display: block;
  margin: 18px 0 8px;
  color: var(--muted-strong);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.bulk-input,
.text-input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: #ffffff;
  color: var(--text);
  outline: none;
  transition: border-color 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

.bulk-input:focus,
.text-input:focus,
.tier-name-input:focus {
  border-color: #6f96ff;
  box-shadow: 0 0 0 4px var(--focus);
}

.bulk-input {
  min-height: 220px;
  resize: vertical;
  line-height: 1.55;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.action-stack {
  display: grid;
  gap: 10px;
  margin-top: 16px;
}

.primary-button,
.ghost-button,
.mini-button {
  border-radius: 8px;
  border: 1px solid transparent;
  padding: 10px 14px;
  font-weight: 800;
  letter-spacing: 0.01em;
  transition: background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.primary-button {
  background: linear-gradient(180deg, #ef5b68, var(--primary));
  border-color: #b83042;
  color: #ffffff;
  box-shadow: 0 6px 12px rgba(216, 68, 82, 0.18);
}

.primary-button:hover {
  background: linear-gradient(180deg, #e45260, var(--primary-hover));
}

.ghost-button,
.mini-button {
  background: #ffffff;
  border-color: var(--border-strong);
  color: var(--text);
}

.primary-button:hover,
.ghost-button:hover,
.mini-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(28, 33, 40, 0.08);
}

.mini-button {
  min-width: 42px;
  padding: 8px 10px;
  font-size: 0.82rem;
}

.mini-button[disabled] {
  opacity: 0.45;
  cursor: default;
  transform: none;
  box-shadow: none;
}

.helper-list {
  margin-top: 16px;
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 0.89rem;
  line-height: 1.45;
}

.helper-list p {
  margin: 0;
}

kbd {
  display: inline-block;
  padding: 2px 7px;
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  background: var(--surface-soft);
  color: var(--muted-strong);
  font-size: 0.76rem;
  font-weight: 800;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.stat-card {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface-muted);
}

.stat-label {
  margin: 0 0 5px;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.stat-value {
  margin: 0;
  font-size: 1.45rem;
  font-weight: 900;
  line-height: 1;
}

.board-stage {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}

.tier-row,
.pool-row {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 0;
  align-items: stretch;
}

.tier-side,
.pool-side {
  min-height: 112px;
  padding: 14px 12px;
  display: grid;
  gap: 10px;
  align-content: space-between;
  color: #101217;
  border: 1px solid var(--border-strong);
  border-right: 0;
  border-radius: 8px 0 0 8px;
  background: var(--tier-color);
}

.pool-side {
  --tier-color: #d7dce3;
}

.tier-topline {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 36px;
  gap: 10px;
  align-items: start;
}

.tier-name-input {
  width: 100%;
  min-width: 0;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font-family: var(--font-heading);
  font-size: 1.4rem;
  line-height: 1;
  letter-spacing: -0.04em;
  text-transform: uppercase;
}

.tier-count {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 800;
  opacity: 0.8;
}

.tier-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tier-color-input {
  width: 36px;
  height: 32px;
  padding: 0;
  border: 1px solid rgba(0, 0, 0, 0.14);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.72);
  overflow: hidden;
}

.tier-color-input::-webkit-color-swatch-wrapper {
  padding: 0;
}

.tier-color-input::-webkit-color-swatch {
  border: 0;
}

.card-strip {
  min-height: 112px;
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 10px;
  padding: 12px;
  overflow-x: hidden;
  border: 1px solid var(--border-strong);
  border-radius: 0 8px 8px 0;
  background: linear-gradient(180deg, #fbfbfc, #f3f5f7);
  scrollbar-width: thin;
}

.card-strip.drag-target {
  background: linear-gradient(180deg, #f6faff, #eef4ff);
  box-shadow: inset 0 0 0 2px rgba(80, 134, 255, 0.32);
}

.card {
  position: relative;
  flex: 0 0 138px;
  min-height: 88px;
  padding: 8px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: #ffffff;
  color: var(--text);
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 8px;
  user-select: none;
  touch-action: none;
  transition: transform 0.14s ease, box-shadow 0.14s ease, border-color 0.14s ease;
  will-change: transform;
}

.card[data-tone="sun"] {
  background: #fff1bf;
}

.card[data-tone="mint"] {
  background: #e4f7e4;
}

.card[data-tone="sky"] {
  background: #e4efff;
}

.card[data-tone="melon"] {
  background: #ffe6d8;
}

.card[data-tone="cream"] {
  background: #f5eddc;
}

.card[data-tone="rose"] {
  background: #ffe3e9;
}

.card:not(.placeholder):hover {
  transform: translateY(-1px);
  border-color: #9da6b1;
  box-shadow: 0 8px 18px rgba(28, 33, 40, 0.08);
}

.card.dragging-source {
  opacity: 0.32;
  border-style: dashed;
}

.card-tools {
  display: flex;
  justify-content: flex-end;
  gap: 4px;
}

.card-tool {
  width: 22px;
  height: 22px;
  padding: 0;
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: 5px;
  background: rgba(255, 255, 255, 0.92);
  color: #424850;
  font-size: 0.68rem;
  font-weight: 800;
}

.card-text {
  font-size: 0.9rem;
  font-weight: 900;
  line-height: 1.24;
  word-break: break-word;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer {
  color: #7a828c;
  font-size: 0.64rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card.placeholder {
  background: rgba(80, 134, 255, 0.08);
  border: 2px dashed rgba(80, 134, 255, 0.34);
  box-shadow: none;
  transform: none !important;
}

.card.placeholder * {
  visibility: hidden;
}

.drag-ghost {
  position: fixed;
  z-index: 999;
  pointer-events: none;
  left: 0;
  top: 0;
  opacity: 0.97;
  transform: translate3d(0, 0, 0) rotate(-1.5deg) scale(1.03);
  box-shadow: 0 16px 30px rgba(28, 33, 40, 0.18);
}

body.is-dragging {
  cursor: grabbing;
}

body.is-dragging .card {
  transition-duration: 0.1s;
}

.empty-slot {
  display: grid;
  place-items: center;
  min-width: 148px;
  min-height: 88px;
  padding: 10px 12px;
  border: 2px dashed var(--border-strong);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.45);
  color: var(--muted);
}

.empty-slot p {
  margin: 0;
  text-align: center;
  font-size: 0.9rem;
  font-weight: 700;
}

.board-footer-note {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.84rem;
}

@media (max-width: 1180px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .composer-panel {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-head {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 860px) {
  .site-header-inner,
  .hero-actions,
  .board-toolbar,
  .panel-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .app-shell {
    padding: 16px 14px 28px;
  }

  .page-head,
  .composer-panel .panel,
  .board-panel {
    padding: 18px;
  }

  .quick-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .composer-panel {
    grid-template-columns: 1fr;
  }

  .tier-row,
  .pool-row {
    grid-template-columns: 1fr;
  }

  .tier-side,
  .pool-side {
    min-height: auto;
    border-right: 1px solid var(--border-strong);
    border-bottom: 0;
    border-radius: 8px 8px 0 0;
  }

  .card-strip {
    min-height: 100px;
    border-left: 1px solid var(--border-strong);
    border-radius: 0 0 8px 8px;
  }
}

@media (max-width: 560px) {
  .brand-mark {
    width: 38px;
    height: 38px;
    font-size: 0.78rem;
  }

  .site-header h1 {
    font-size: 1.12rem;
  }

  .quick-steps {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .card {
    flex-basis: 124px;
  }
}