/* =========================================================
   CipherStack — Kawaii & Cozy Game Aesthetic Stylesheet
   Inspired by Pastel Cozy Game UI & Character Customizers
   ========================================================= */

:root {
  --border-color: #4a2e2b;
  --border-width: 2.5px;
  --bg-main: #fdf5ef;
  --bg-card: #fffdfa;
  --bg-inner: #fff5ee;
  
  --text-main: #442a27;
  --text-muted: #8c6e66;
  --text-light: #ab8f88;
  
  --pastel-pink: #ffaec0;
  --pastel-pink-dark: #f08ea4;
  --pastel-pink-light: #ffeef2;
  
  --pastel-purple: #d5c2f8;
  --pastel-purple-dark: #bba0ec;
  --pastel-purple-light: #f3edfd;
  
  --pastel-cyan: #9fe2f7;
  --pastel-cyan-dark: #6eceea;
  --pastel-cyan-light: #e8f9fd;
  
  --pastel-yellow: #ffe699;
  --pastel-yellow-dark: #f7d268;
  --pastel-yellow-light: #fff8e1;
  
  --pastel-green: #bceecf;
  --pastel-green-dark: #8fe0ad;
  --pastel-green-light: #eafaf0;
  
  --pastel-peach: #ffd4b8;
  --shadow-solid: 0 5px 0 var(--border-color);
  --shadow-solid-sm: 0 3px 0 var(--border-color);
  --shadow-solid-lg: 0 8px 0 var(--border-color);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Fredoka', 'Quicksand', system-ui, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

/* Custom Cozy Scrollbars */
::-webkit-scrollbar {
  height: 8px;
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-inner);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb {
  background: #dabeb2;
  border-radius: 10px;
  border: 1.5px solid var(--border-color);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--pastel-pink);
}

/* =========================================================
   UI Icons (SVG)
   ========================================================= */
.ui-icon {
  width: 1.15em;
  height: 1.15em;
  stroke: currentColor;
  stroke-width: 2.2;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  display: inline-block;
  vertical-align: -0.16em;
  flex-shrink: 0;
}

.val-svg {
  width: 26px;
  height: 26px;
  stroke-width: 2.5;
  display: block;
}

.val-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

body {
  background-color: var(--bg-main);
  background-image: radial-gradient(#eccbbe 1.5px, transparent 1.5px);
  background-size: 18px 18px;
  color: var(--text-main);
  padding: 32px 16px 48px;
  line-height: 1.5;
  min-height: 100vh;
}

.container {
  max-width: 1040px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* =========================================================
   Header Section
   ========================================================= */
.header {
  text-align: center;
  position: relative;
  padding: 10px 0;
}

.logo-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  padding: 6px 16px;
  border-radius: 100px;
  background: var(--pastel-pink);
  border: var(--border-width) solid var(--border-color);
  color: var(--border-color);
  box-shadow: var(--shadow-solid-sm);
  margin-bottom: 12px;
}

h1 {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
  text-shadow: 0 2px 0 rgba(255, 255, 255, 0.8);
}

.subtitle {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  margin-top: 6px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* =========================================================
   3 Cards Showcase (Character Customizer Slot Style)
   ========================================================= */
.cards-showcase {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.show-card {
  background: var(--bg-card);
  border: var(--border-width) solid var(--border-color);
  border-radius: 24px;
  padding: 20px;
  cursor: pointer;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--shadow-solid);
  position: relative;
  overflow: hidden;
}

.show-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-solid-lg);
}

.show-card.active {
  transform: translateY(-4px);
  box-shadow: var(--shadow-solid-lg), 0 0 0 4px var(--card-accent);
  background: #ffffff;
}

/* Card Accent Themes */
.card-playfair {
  --card-accent: var(--pastel-purple);
  --card-pill: var(--pastel-purple-light);
  --card-btn: #c7aefa;
}

.card-columnar {
  --card-accent: var(--pastel-cyan);
  --card-pill: var(--pastel-cyan-light);
  --card-btn: #8ce1f7;
}

.card-rail {
  --card-accent: var(--pastel-pink);
  --card-pill: var(--pastel-pink-light);
  --card-btn: #ff9fba;
}

.card-top {
  display: flex;
  align-items: center;
  gap: 12px;
}

.card-top h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
}

.card-desc {
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
}

.card-num {
  font-size: 13px;
  font-weight: 800;
  width: 32px;
  height: 32px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-solid-sm);
  flex-shrink: 0;
}

.num-purple {
  background: var(--pastel-purple);
  color: var(--border-color);
}

.num-cyan {
  background: var(--pastel-cyan);
  color: var(--border-color);
}

.num-pink {
  background: var(--pastel-pink);
  color: var(--border-color);
}

/* Showcase Mini Preview Box (Like Item Grid Slots) */
.preview-box {
  background: var(--bg-inner);
  border: var(--border-width) solid var(--border-color);
  border-radius: 18px;
  padding: 14px;
  min-height: 180px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: inset 0 3px 6px rgba(74, 46, 43, 0.04);
}

.pf-mini-grid, .col-mini-grid, .col-headers {
  display: grid;
  gap: 4px;
}

.pf-mini-grid {
  grid-template-columns: repeat(5, 26px);
}

.col-mini-grid, .col-headers {
  grid-template-columns: repeat(4, 26px);
}

.col-headers {
  text-align: center;
  font-size: 11px;
  font-weight: 800;
  color: #278aa6;
}

.pf-mini-cell, .col-mini-cell, .rm-cell {
  border-radius: 8px;
  display: grid;
  place-items: center;
  font-family: 'Fredoka', 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  border: 1.5px solid var(--border-color);
}

.pf-mini-cell {
  height: 26px;
  background: var(--pastel-purple);
  color: var(--text-main);
  box-shadow: 0 2px 0 var(--border-color);
}

.col-mini-cell {
  height: 24px;
  background: var(--pastel-cyan);
  color: var(--text-main);
  box-shadow: 0 2px 0 var(--border-color);
}

.pf-digraphs-row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: center;
  max-width: 200px;
}

.pf-chip {
  font-size: 10px;
  font-family: 'Fredoka', 'JetBrains Mono', monospace;
  font-weight: 700;
  background: #ffffff;
  border: 1.5px solid var(--border-color);
  padding: 2px 6px;
  border-radius: 6px;
  color: var(--text-main);
  box-shadow: 0 1.5px 0 var(--border-color);
}

.rail-mini-preview {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 100%;
}

.rm-row {
  display: flex;
  align-items: center;
  gap: 4px;
  justify-content: center;
}

.rm-cell {
  width: 20px;
  height: 20px;
  font-size: 10px;
}

.rm-cell.active {
  background: var(--pastel-pink);
  color: var(--border-color);
  box-shadow: 0 2px 0 var(--border-color);
}

.rm-cell.dot {
  background: rgba(74, 46, 43, 0.04);
  border-color: transparent;
  color: var(--text-light);
  font-size: 12px;
}

.io-sample {
  font-family: 'Fredoka', 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 3px;
  background: rgba(255, 255, 255, 0.6);
  padding: 8px 10px;
  border-radius: 10px;
  border: 1.5px dashed #dabeb2;
}

.io-sample div {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.io-sample small {
  color: var(--border-color);
  font-weight: 800;
  margin-right: 4px;
  background: var(--pastel-yellow);
  padding: 1px 5px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
}

/* =========================================================
   Super Enkripsi Banner (Cute Ribbon Banner)
   ========================================================= */
.super-banner {
  background: var(--pastel-yellow-light);
  border: var(--border-width) solid var(--border-color);
  border-radius: 20px;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  box-shadow: var(--shadow-solid);
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.super-banner:hover {
  background: var(--pastel-yellow);
  transform: translateY(-2px);
  box-shadow: var(--shadow-solid-lg);
}

.super-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 800;
  font-size: 12px;
  background: var(--pastel-pink);
  color: var(--border-color);
  border: var(--border-width) solid var(--border-color);
  padding: 5px 12px;
  border-radius: 12px;
  box-shadow: var(--shadow-solid-sm);
  flex-shrink: 0;
}

/* =========================================================
   Workspace Main Card
   ========================================================= */
.workspace-card {
  background: var(--bg-card);
  border: var(--border-width) solid var(--border-color);
  border-radius: 28px;
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  box-shadow: var(--shadow-solid-lg);
}

.ws-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  border-bottom: 2px dashed #ecd0c3;
  padding-bottom: 18px;
}

.ws-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
  background: var(--pastel-pink);
  color: var(--border-color);
  border: 2px solid var(--border-color);
  padding: 4px 12px;
  border-radius: 10px;
  box-shadow: var(--shadow-solid-sm);
  margin-bottom: 6px;
}

/* =========================================================
   Algorithm Quick Tabs (Kawaii Game Category Selector)
   ========================================================= */
.algo-quick-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  background: var(--bg-inner);
  padding: 8px;
  border-radius: 18px;
  border: var(--border-width) solid var(--border-color);
  box-shadow: inset 0 2px 4px rgba(74, 46, 43, 0.04);
}

.tab-pill {
  flex: 1;
  min-width: 130px;
  padding: 10px 14px;
  border-radius: 14px;
  font-size: 13.5px;
  font-weight: 700;
  border: 2px solid var(--border-color);
  background: #ffffff;
  color: var(--text-main);
  cursor: pointer;
  box-shadow: var(--shadow-solid-sm);
  transition: all 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
  text-align: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.tab-pill:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-solid);
}

.tab-pill:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 var(--border-color);
}

.tab-pill.active {
  background: var(--pastel-pink);
  color: var(--border-color);
  box-shadow: var(--shadow-solid);
}

.tab-pill.tab-super.active {
  background: var(--pastel-yellow);
}

.input-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  flex-wrap: wrap;
  gap: 8px;
}

.input-header-row label {
  margin-bottom: 0 !important;
}

.showcase-title-row {
  text-align: center;
  margin-top: 14px;
}

.showcase-title-row h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-main);
}

.ws-header h2 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-main);
}

.ws-actions {
  display: flex;
  gap: 10px;
}

/* =========================================================
   Input & Form Controls
   ========================================================= */
.input-section label, .output-header label {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  display: block;
}

textarea, .key-field input {
  background: #ffffff;
  border: var(--border-width) solid var(--border-color);
  border-radius: 16px;
  color: var(--text-main);
  outline: none;
  font-weight: 600;
  box-shadow: inset 0 2px 4px rgba(74, 46, 43, 0.04);
  transition: all 0.2s ease;
}

textarea {
  width: 100%;
  padding: 14px 16px;
  font-size: 15px;
  resize: vertical;
  line-height: 1.6;
}

textarea:focus, .key-field input:focus {
  border-color: #f08ea4;
  box-shadow: 0 0 0 4px var(--pastel-pink-light), inset 0 2px 4px rgba(74, 46, 43, 0.04);
}

.mono-font {
  font-family: 'Fredoka', 'JetBrains Mono', monospace;
  font-size: 14px;
}

.key-row {
  display: flex;
  align-items: flex-end;
  gap: 14px;
  margin-top: 14px;
  flex-wrap: wrap;
}

.key-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.key-field label {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-muted);
}

.key-field input {
  padding: 10px 14px;
  font-size: 15px;
  font-family: 'Fredoka', 'JetBrains Mono', monospace;
  font-weight: 700;
}

.key-field input[type="number"] {
  width: 110px;
}

.key-field input[type="text"] {
  width: 180px;
  text-transform: uppercase;
}

.btn-group-enc {
  display: flex;
  gap: 10px;
  margin-left: auto;
}

/* =========================================================
   Buttons (Kawaii Tactile Game Push-Buttons)
   ========================================================= */
.btn {
  padding: 10px 20px;
  border-radius: 16px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-solid-sm);
  transition: all 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  user-select: none;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-solid);
}

.btn:active {
  transform: translateY(2px);
  box-shadow: 0 1px 0 var(--border-color);
}

.btn-sm {
  padding: 7px 14px;
  font-size: 13px;
  border-radius: 12px;
}

.btn-primary {
  background: var(--pastel-pink);
  color: var(--border-color);
}

.btn-primary:hover {
  background: var(--pastel-pink-dark);
}

.btn-decrypt {
  background: var(--pastel-cyan);
  color: var(--border-color);
}

.btn-decrypt:hover {
  background: var(--pastel-cyan-dark);
}

.btn-outline {
  background: var(--pastel-yellow);
  color: var(--border-color);
}

.btn-outline:hover {
  background: var(--pastel-yellow-dark);
}

.btn-ghost {
  background: #ffffff;
  color: var(--text-main);
}

.btn-ghost:hover {
  background: var(--pastel-peach);
}

/* =========================================================
   Interactive Visualization (Game Grid Display)
   ========================================================= */
.viz-section {
  background: var(--bg-inner);
  border: var(--border-width) solid var(--border-color);
  border-radius: 20px;
  padding: 20px;
  box-shadow: inset 0 3px 6px rgba(74, 46, 43, 0.03);
}

.viz-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.viz-title-wrap h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
}

.viz-mini-pills {
  display: inline-flex;
  gap: 4px;
  background: #ffffff;
  padding: 3px;
  border-radius: 10px;
  border: 1.5px solid var(--border-color);
  box-shadow: 0 2px 0 var(--border-color);
}

.viz-pill {
  border: none;
  background: transparent;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  transition: all 0.15s ease;
}

.viz-pill.active {
  background: var(--pastel-pink);
  color: var(--border-color);
}

.text-muted {
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 500;
}

.viz-content {
  overflow-x: auto;
  padding: 10px 4px;
}

.rail-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.rail-label {
  font-size: 13px;
  font-weight: 800;
  color: var(--border-color);
  background: var(--pastel-yellow);
  border: 1.5px solid var(--border-color);
  border-radius: 8px;
  padding: 4px 6px;
  width: 36px;
  text-align: center;
  flex-shrink: 0;
  box-shadow: 0 2px 0 var(--border-color);
}

.rail-cell {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  font-size: 15px;
  font-weight: 800;
  flex-shrink: 0;
  transition: all 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
  user-select: none;
  border: var(--border-width) solid var(--border-color);
  position: relative;
}

.cell-sub-idx {
  position: absolute;
  top: 2px;
  left: 4px;
  font-size: 8px;
  font-weight: 800;
  opacity: 0.65;
  font-family: 'Fredoka', 'JetBrains Mono', monospace;
  pointer-events: none;
}

.rail-cell.filled {
  background: var(--pastel-pink);
  color: var(--border-color);
  box-shadow: var(--shadow-solid-sm);
  animation: popCell 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.rail-cell.filled:hover {
  transform: scale(1.15) translateY(-3px);
  box-shadow: var(--shadow-solid);
  cursor: pointer;
  z-index: 2;
}

.rail-cell.empty {
  background: rgba(255, 255, 255, 0.6) !important;
  border: 1.5px dashed #dac2b6 !important;
  box-shadow: none !important;
  color: var(--text-light);
}

.rail-summary-card {
  background: #ffffff;
  border: var(--border-width) solid var(--border-color);
  border-radius: 16px;
  padding: 12px 14px;
  box-shadow: var(--shadow-solid-sm);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.rail-summary-title {
  font-size: 12.5px;
  font-weight: 800;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 6px;
}

.rail-parts-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.rail-part-badge {
  background: var(--bg-inner);
  border: 1.5px solid var(--border-color);
  border-radius: 10px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 2px 0 var(--border-color);
}

.rail-part-tag {
  background: var(--pastel-yellow);
  color: var(--border-color);
  padding: 1px 6px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 800;
  border: 1px solid var(--border-color);
}

.rail-part-chars {
  font-family: 'Fredoka', 'JetBrains Mono', monospace;
  letter-spacing: 0.08em;
  font-weight: 800;
  color: var(--text-main);
}

.rail-recon-box {
  background: var(--pastel-cyan-light);
  border: 1.5px dashed var(--pastel-cyan-dark);
  border-radius: 12px;
  padding: 8px 12px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.rail-recon-badge {
  background: var(--pastel-cyan);
  color: var(--border-color);
  border: 1.5px solid var(--border-color);
  padding: 2px 8px;
  border-radius: 8px;
  font-size: 11px;
  font-weight: 800;
}

.viz-caption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}

.viz-caption strong {
  color: var(--text-main);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13.5px;
}

@keyframes popCell {
  0% { transform: scale(0.6); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

/* =========================================================
   Super Enkripsi 3-Layer Pipeline Visualizer
   ========================================================= */
.super-viz-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
  width: 100%;
}

.super-flow-tracker {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding: 10px 12px;
  background: var(--bg-card);
  border: var(--border-width) solid var(--border-color);
  border-radius: 18px;
  box-shadow: var(--shadow-solid-sm);
}

.super-flow-step {
  display: flex;
  flex-direction: column;
  gap: 3px;
  background: var(--bg-inner);
  border: 1.5px solid var(--border-color);
  border-radius: 12px;
  padding: 8px 12px;
  min-width: 130px;
  flex-shrink: 0;
  cursor: pointer;
  transition: all 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 2px 0 var(--border-color);
}

.super-flow-step:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 0 var(--border-color);
}

.super-flow-step.selected {
  background: #ffffff;
  box-shadow: 0 4px 0 var(--border-color), 0 0 0 2px var(--pastel-yellow);
}

.flow-input {
  background: #ffffff;
}

.flow-lapis {
  background: var(--bg-inner);
}

.flow-pill-tag {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.05em;
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: #ffffff;
  align-self: flex-start;
}

.flow-pill-tag.tag-purple {
  background: var(--pastel-purple);
}

.flow-pill-tag.tag-cyan {
  background: var(--pastel-cyan);
}

.flow-pill-tag.tag-pink {
  background: var(--pastel-pink);
}

.flow-algo-name {
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
}

.flow-code {
  font-family: 'Fredoka', 'JetBrains Mono', monospace;
  font-size: 11px;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.8);
  padding: 2px 6px;
  border-radius: 6px;
  border: 1px dashed #dabeb2;
  color: var(--border-color);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.flow-arrow {
  font-size: 16px;
  font-weight: 800;
  color: #b05c75;
  flex-shrink: 0;
}

/* Layer Nav Tabs */
.super-layer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.super-nav-btn {
  padding: 6px 14px;
  border-radius: 12px;
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  border: 2px solid var(--border-color);
  background: #ffffff;
  color: var(--text-main);
  box-shadow: var(--shadow-solid-sm);
  transition: all 0.15s cubic-bezier(0.34, 1.56, 0.64, 1);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: inherit;
}

.super-nav-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-solid);
}

.super-nav-btn.active {
  background: var(--pastel-yellow);
  color: var(--border-color);
  box-shadow: var(--shadow-solid);
}

/* Layer Cards */
.super-layers-deck {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.super-card-layer {
  background: #ffffff;
  border: var(--border-width) solid var(--border-color);
  border-radius: 20px;
  padding: 16px 18px;
  box-shadow: var(--shadow-solid);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.layer-theme-playfair {
  border-left: 7px solid #bba0ec;
}

.layer-theme-columnar {
  border-left: 7px solid #6eceea;
}

.layer-theme-rail {
  border-left: 7px solid #f08ea4;
}

.super-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  border-bottom: 1.5px dashed #dabeb2;
  padding-bottom: 10px;
}

.super-card-title-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.super-card-num {
  width: 28px;
  height: 28px;
  border-radius: 10px;
  background: var(--pastel-yellow);
  border: 2px solid var(--border-color);
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 800;
  color: var(--border-color);
  box-shadow: 0 2px 0 var(--border-color);
  flex-shrink: 0;
}

.super-card-num.num-playfair {
  background: var(--pastel-purple);
}

.super-card-num.num-columnar {
  background: var(--pastel-cyan);
}

.super-card-num.num-rail {
  background: var(--pastel-pink);
}

.super-card-title-group h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
}

.super-card-key {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
}

.super-card-io {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.io-badge {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.io-badge code {
  font-family: 'Fredoka', 'JetBrains Mono', monospace;
  font-size: 11.5px;
  background: var(--bg-inner);
  border: 1.5px solid var(--border-color);
  padding: 2px 8px;
  border-radius: 6px;
  color: var(--border-color);
  font-weight: 700;
}

.io-badge.io-out code {
  background: var(--pastel-yellow-light);
}

.io-arrow {
  color: #b05c75;
  font-weight: 800;
  font-size: 12px;
}

.super-card-body {
  overflow-x: auto;
  padding: 4px 0;
}

.super-arrow-connector {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  padding: 6px 0;
}

.connector-icon {
  width: 18px;
  height: 18px;
  color: #b05c75;
  stroke-width: 2.5;
}

/* =========================================================
   Output & Decrypt Section
   ========================================================= */
.output-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.out-tools {
  display: flex;
  gap: 8px;
}

.link-tool {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--border-color);
  background: var(--pastel-yellow);
  border: 1.5px solid var(--border-color);
  padding: 4px 10px;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: 0 2px 0 var(--border-color);
  transition: all 0.15s ease;
}

.link-tool:hover {
  background: var(--pastel-yellow-dark);
  transform: translateY(-1px);
  box-shadow: 0 3px 0 var(--border-color);
  text-decoration: none;
}

.link-tool:active {
  transform: translateY(1px);
  box-shadow: 0 1px 0 var(--border-color);
}

/* =========================================================
   Bottom Split Section: Side-by-Side Output & Checking
   ========================================================= */
.bottom-split-section {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 20px;
  align-items: stretch;
}

.output-section, .checking-section {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.output-section textarea {
  flex: 1;
  min-height: 110px;
}

.checking-header {
  margin-bottom: 8px;
}

.checking-header label {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
  display: block;
}

/* =========================================================
   Validation & Status Box
   ========================================================= */
.val-box {
  margin-top: 0;
  padding: 18px 20px;
  border-radius: 18px;
  display: flex;
  align-items: center;
  gap: 16px;
  border: var(--border-width) solid var(--border-color);
  box-shadow: var(--shadow-solid-sm);
  flex: 1;
  transition: all 0.25s ease;
  min-height: 110px;
}

.val-box.val-idle {
  background: var(--pastel-yellow-light);
  color: var(--border-color);
}

.val-box.val-ok {
  background: var(--pastel-green);
  color: var(--border-color);
}

.val-box.val-fail {
  background: #ffd6d6;
  color: var(--border-color);
}

.val-icon {
  font-size: 26px;
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: rgba(255, 255, 255, 0.7);
  border: 1.5px solid var(--border-color);
  box-shadow: 0 2px 0 var(--border-color);
}

.val-info {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.val-box strong {
  font-size: 15px;
  font-weight: 800;
  color: var(--text-main);
  display: block;
}

.val-box p {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

/* =========================================================
   Responsive Breakpoints (Desktop -> Tablet -> Mobile)
   ========================================================= */

/* Tablet & Medium Screens */
@media (max-width: 900px) {
  .cards-showcase {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .bottom-split-section {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .workspace-card {
    padding: 22px;
    border-radius: 24px;
  }
  
  .btn-group-enc {
    margin-left: 0;
    width: 100%;
  }
  
  .btn-group-enc .btn {
    flex: 1;
  }
}

/* Mobile Screens */
@media (max-width: 640px) {
  body {
    padding: 20px 12px 36px;
  }
  
  .container {
    gap: 18px;
  }
  
  h1 {
    font-size: 24px;
  }
  
  .subtitle {
    font-size: 13.5px;
  }
  
  .super-banner {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 14px 16px;
    font-size: 13px;
    border-radius: 18px;
  }
  
  .ws-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  
  .ws-header h2 {
    font-size: 20px;
  }
  
  .ws-actions {
    width: 100%;
    display: flex;
    gap: 8px;
  }
  
  .ws-actions .btn {
    flex: 1;
  }
  
  .key-row {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }
  
  .key-field input[type="number"],
  .key-field input[type="text"] {
    width: 100%;
  }
  
  .btn-group-enc {
    width: 100%;
    display: flex;
    gap: 8px;
  }
  
  .output-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  
  .out-tools {
    width: 100%;
    display: flex;
    justify-content: flex-end;
  }
  
  .val-box {
    padding: 12px 14px;
    gap: 10px;
    border-radius: 14px;
  }
  
  .val-box strong {
    font-size: 13px;
  }
  
  .val-box p {
    font-size: 12px;
  }
}

/* Extra Small Phones (< 400px) */
@media (max-width: 400px) {
  h1 {
    font-size: 21px;
  }
  
  .btn-group-enc,
  .ws-actions {
    flex-direction: column;
  }
  
  .btn-group-enc .btn,
  .ws-actions .btn {
    width: 100%;
  }
  
  .out-tools {
    justify-content: stretch;
  }
  
  .out-tools .link-tool {
    flex: 1;
    justify-content: center;
  }
}