@import url('https://fonts.googleapis.com/css2?family=Anton&family=Barlow:ital,wght@0,300;0,400;0,500;0,600;0,700;1,400&display=swap');

:root {
  --bg-color: #f3efe9;
  --text-color: #121212;
  --accent-color: #e53b23;
  --accent-hover: #b82c18;
  --card-bg: #ffffff;
  --border-color: #121212;
  --border-width: 2px;
  --border-width-thin: 1px;
  
  /* Fonts */
  --font-display: 'Anton', sans-serif;
  --font-body: 'Barlow', sans-serif;
  
  /* Sticky Note Pastel Colors */
  --note-orange: #ffd5c4;
  --note-orange-text: #b82c18;
  --note-blue: #d0ebff;
  --note-blue-text: #0b538e;
  --note-yellow: #fff3c4;
  --note-yellow-text: #8c6b00;
  --note-green: #d3f2d3;
  --note-green-text: #285c28;
  --note-grey: #e6e6e6;
  --note-grey-text: #4a4a4a;
}

/* Reset and Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  padding: 2rem;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header & Typography */
header {
  margin-bottom: 2rem;
  border-bottom: var(--border-width) solid var(--border-color);
  padding-bottom: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.brand-section h1 {
  font-family: var(--font-display);
  font-size: 4rem;
  line-height: 0.9;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.brand-section .subtitle {
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--accent-color);
  line-height: 1;
  margin-top: 0.2rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Navigation - Numbered Editorial Style */
nav.mode-nav {
  display: flex;
  gap: 1rem;
}

.nav-btn {
  background: none;
  border: var(--border-width) solid var(--border-color);
  color: var(--text-color);
  font-family: var(--font-display);
  font-size: 1.1rem;
  padding: 0.6rem 1.2rem;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-btn .num {
  color: var(--accent-color);
  font-family: var(--font-body);
  font-weight: 700;
  margin-right: 0.2rem;
}

.nav-btn:hover {
  background-color: var(--text-color);
  color: var(--bg-color);
}

.nav-btn.active {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: #ffffff;
}

.nav-btn.active .num {
  color: #ffffff;
}

/* Main Container Layout */
.app-container {
  display: flex;
  flex: 1;
  gap: 2rem;
  position: relative;
}

.canvas-wrapper {
  flex: 3;
  display: flex;
  flex-direction: column;
  min-width: 0; /* Prevents flex items from overflowing */
}

.side-panel {
  flex: 1;
  background-color: var(--card-bg);
  border: var(--border-width) solid var(--border-color);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  max-width: 420px;
  min-width: 320px;
  position: sticky;
  top: 2rem;
  height: calc(100vh - 12rem);
  overflow-y: auto;
  box-shadow: 6px 6px 0px rgba(0,0,0,0.05);
}

/* Side Panel Content Styles */
.side-panel h2 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  line-height: 1;
  margin-bottom: 1rem;
  text-transform: uppercase;
  border-bottom: var(--border-width) solid var(--border-color);
  padding-bottom: 0.5rem;
}

.side-panel-desc {
  font-size: 1.05rem;
  color: #555;
  margin-bottom: 1.5rem;
}

.panel-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

/* Business Model Canvas Grid styling */
.bmc-grid {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  grid-template-rows: 280px 280px 240px;
  border: var(--border-width) solid var(--border-color);
  background-color: var(--border-color);
  gap: var(--border-width);
  width: 100%;
}

.bmc-block {
  background-color: var(--card-bg);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s ease;
  min-height: 0; /* Essential for containing flex items */
}

/* Canvas Grid Placement Map */
#block-kp { grid-column: 1 / 3; grid-row: 1 / 3; }
#block-ka { grid-column: 3 / 5; grid-row: 1; }
#block-kr { grid-column: 3 / 5; grid-row: 2; }
#block-vp { grid-column: 5 / 7; grid-row: 1 / 3; }
#block-cr { grid-column: 7 / 9; grid-row: 1; }
#block-ch { grid-column: 7 / 9; grid-row: 2; }
#block-cs { grid-column: 9 / 11; grid-row: 1 / 3; }
#block-cst { grid-column: 1 / 6; grid-row: 3; }
#block-rev { grid-column: 6 / 11; grid-row: 3; }

/* Block Header & Icons */
.block-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.8rem;
}

.block-title-group {
  display: flex;
  flex-direction: column;
}

.block-code {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--accent-color);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: -0.1rem;
}

.block-title {
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1;
  text-transform: uppercase;
}

.block-icon {
  width: 1.8rem;
  height: 1.8rem;
  color: var(--text-color);
  opacity: 0.8;
  flex-shrink: 0;
}

/* Block Actions */
.block-actions {
  position: absolute;
  top: 1rem;
  right: 1rem;
  display: flex;
  gap: 0.4rem;
  opacity: 0;
  transition: opacity 0.2s ease;
  z-index: 10;
}

.bmc-block:hover .block-actions {
  opacity: 1;
}

.block-btn {
  background: var(--card-bg);
  border: var(--border-width-thin) solid var(--border-color);
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: bold;
  transition: all 0.15s ease;
  color: var(--text-color);
}

.block-btn:hover {
  background-color: var(--text-color);
  color: var(--card-bg);
}

.block-btn.add-btn {
  background-color: var(--accent-color);
  color: #ffffff;
  border-color: var(--accent-color);
}

.block-btn.add-btn:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
}

/* Sticky Notes Container */
.notes-container {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 0.6rem;
  overflow-y: auto;
  padding: 0.2rem;
  padding-bottom: 1rem;
  min-height: 50px;
}

/* Hide scrollbars but allow scrolling for a cleaner presentation */
.notes-container::-webkit-scrollbar {
  width: 4px;
}
.notes-container::-webkit-scrollbar-thumb {
  background-color: rgba(0,0,0,0.1);
  border-radius: 2px;
}

/* Sticky Note Element */
.sticky-note {
  width: calc(50% - 0.3rem);
  min-width: 110px;
  background-color: var(--note-yellow);
  color: var(--note-yellow-text);
  border: var(--border-width-thin) solid var(--border-color);
  padding: 0.6rem;
  position: relative;
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.3;
  cursor: grab;
  user-select: none;
  box-shadow: 2px 2px 0px rgba(0,0,0,0.15);
  transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 80px;
}

/* Alternating subtle rotations to look realistic */
.sticky-note:nth-child(even) {
  transform: rotate(-1deg);
}
.sticky-note:nth-child(odd) {
  transform: rotate(1.5deg);
}

.sticky-note:hover {
  transform: scale(1.05) rotate(0deg);
  box-shadow: 4px 4px 0px rgba(0,0,0,0.2);
  z-index: 5;
}

.sticky-note:active {
  cursor: grabbing;
}

.sticky-note.dragging {
  opacity: 0.4;
  transform: scale(0.95);
  box-shadow: none;
  border-style: dashed;
}

/* Sticky Note Color Modifier Classes */
.sticky-note.color-orange { background-color: var(--note-orange); color: var(--note-orange-text); }
.sticky-note.color-blue { background-color: var(--note-blue); color: var(--note-blue-text); }
.sticky-note.color-green { background-color: var(--note-green); color: var(--note-green-text); }
.sticky-note.color-grey { background-color: var(--note-grey); color: var(--note-grey-text); }
.sticky-note.color-yellow { background-color: var(--note-yellow); color: var(--note-yellow-text); }

/* Textarea inside Note (Editing mode) */
.note-textarea {
  width: 100%;
  height: 100%;
  border: none;
  background: transparent;
  resize: none;
  font-family: inherit;
  font-size: inherit;
  font-weight: inherit;
  color: inherit;
  line-height: inherit;
  outline: none;
  padding: 0;
  margin: 0;
}

/* Note controls (hidden by default, shown on hover/active) */
.note-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.4rem;
  opacity: 0;
  transition: opacity 0.15s ease;
  font-size: 0.75rem;
}

.sticky-note:hover .note-actions {
  opacity: 1;
}

.note-action-btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.1rem;
  color: inherit;
  opacity: 0.6;
  transition: opacity 0.1s ease;
}

.note-action-btn:hover {
  opacity: 1;
}

.note-color-cycle {
  display: flex;
  gap: 2px;
}

.color-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.2);
  cursor: pointer;
}
.color-dot.dot-orange { background-color: var(--note-orange); }
.color-dot.dot-blue { background-color: var(--note-blue); }
.color-dot.dot-yellow { background-color: var(--note-yellow); }
.color-dot.dot-green { background-color: var(--note-green); }
.color-dot.dot-grey { background-color: var(--note-grey); }

/* Drag and Drop Hover Indicators */
.bmc-block.drag-over {
  background-color: #faf7f2;
  outline: 2px dashed var(--accent-color);
  outline-offset: -4px;
}

/* Tutorial Mode Overlay Dimming Mask */
.bmc-grid.tutorial-active .bmc-block {
  opacity: 0.15;
  pointer-events: none;
}

.bmc-grid.tutorial-active .bmc-block.active-tutorial-step {
  opacity: 1;
  pointer-events: auto;
  box-shadow: inset 0 0 0 3px var(--accent-color);
  z-index: 10;
}

/* Tutorial Info Panel inside Side Panel */
.tutorial-panel-nav {
  display: flex;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: var(--border-width) solid var(--border-color);
  gap: 1rem;
}

.panel-btn {
  background-color: var(--card-bg);
  border: var(--border-width) solid var(--border-color);
  color: var(--text-color);
  font-family: var(--font-display);
  font-size: 1rem;
  padding: 0.5rem 1rem;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all 0.15s ease;
  flex: 1;
  text-align: center;
}

.panel-btn:hover:not(:disabled) {
  background-color: var(--text-color);
  color: var(--bg-color);
}

.panel-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.panel-btn.accent-btn {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: #ffffff;
}

.panel-btn.accent-btn:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
}

/* Case Studies UI */
.case-study-picker {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  margin-bottom: 1.5rem;
}

.case-study-btn {
  border: var(--border-width) solid var(--border-color);
  background-color: var(--card-bg);
  padding: 1rem;
  cursor: pointer;
  text-align: left;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.case-study-btn:hover {
  transform: translateX(4px);
  border-color: var(--accent-color);
}

.case-study-btn.active {
  background-color: var(--text-color);
  color: var(--bg-color);
  border-color: var(--text-color);
}

.case-study-btn.active h3 {
  color: var(--accent-color);
}

.case-study-btn h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  margin-bottom: 0.2rem;
  text-transform: uppercase;
  color: var(--text-color);
  transition: color 0.2s ease;
}

.case-study-btn p {
  font-size: 0.85rem;
  opacity: 0.8;
}

/* Quiz Mode Interface */
.quiz-container {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  flex: 1;
}

.quiz-score-badge {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--note-orange);
  color: var(--note-orange-text);
  border: var(--border-width-thin) solid var(--border-color);
  padding: 0.5rem 1rem;
  font-weight: 700;
  font-size: 0.95rem;
}

.quiz-question-box {
  background-color: #faf7f2;
  border: var(--border-width-thin) solid var(--border-color);
  padding: 1.2rem;
}

.quiz-question-label {
  font-family: var(--font-display);
  font-size: 1.1rem;
  text-transform: uppercase;
  color: var(--accent-color);
  margin-bottom: 0.4rem;
}

.quiz-card-prompt {
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 1rem;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.quiz-option-btn {
  background-color: var(--card-bg);
  border: var(--border-width-thin) solid var(--border-color);
  padding: 0.8rem 1rem;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  transition: all 0.15s ease;
}

.quiz-option-btn:hover {
  background-color: #faf7f2;
  border-color: var(--accent-color);
}

.quiz-feedback {
  border: var(--border-width-thin) solid var(--border-color);
  padding: 1rem;
  margin-top: 1rem;
  font-size: 0.95rem;
  line-height: 1.4;
  animation: slide-up 0.25s ease-out;
}

.quiz-feedback.correct {
  background-color: var(--note-green);
  color: var(--note-green-text);
}

.quiz-feedback.incorrect {
  background-color: var(--note-orange);
  color: var(--note-orange-text);
}

.quiz-feedback-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

/* Control Dashboard under Canvas (Save, Load, Export, Clear) */
.canvas-dashboard {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 1.5rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.dash-group {
  display: flex;
  gap: 0.8rem;
}

.dash-btn {
  background-color: var(--card-bg);
  border: var(--border-width) solid var(--border-color);
  color: var(--text-color);
  font-family: var(--font-display);
  font-size: 1rem;
  padding: 0.5rem 1.2rem;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all 0.15s ease;
}

.dash-btn:hover {
  background-color: var(--text-color);
  color: var(--bg-color);
}

.dash-btn.accent-btn {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  color: #ffffff;
}

.dash-btn.accent-btn:hover {
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
}

/* Modals & Dialogs with modern entry animations */
dialog.bmc-modal {
  border: var(--border-width) solid var(--border-color);
  background-color: var(--bg-color);
  padding: 2.5rem;
  max-width: 600px;
  width: 90%;
  margin: auto;
  position: fixed;
  inset: 0;
  box-shadow: 10px 10px 0px rgba(0,0,0,0.15);
  font-family: var(--font-body);
  z-index: 1000;
  opacity: 0;
  transform: scale(0.9);
  transition-property: opacity, transform, display, overlay;
  transition-duration: 0.3s;
  transition-timing-function: cubic-bezier(0.16, 1, 0.3, 1);
  transition-behavior: allow-discrete;
}

dialog.bmc-modal[open] {
  opacity: 1;
  transform: scale(1);
  
  @starting-style {
    opacity: 0;
    transform: scale(0.9);
  }
}

dialog.bmc-modal::backdrop {
  background-color: rgba(0, 0, 0, 0);
  transition: display 0.3s allow-discrete, overlay 0.3s allow-discrete, background-color 0.3s ease-out;
}

dialog.bmc-modal[open]::backdrop {
  background-color: rgba(18, 18, 18, 0.45);
  backdrop-filter: blur(2px);
  
  @starting-style {
    background-color: rgba(0, 0, 0, 0);
    backdrop-filter: blur(0px);
  }
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1.5rem;
  border-bottom: var(--border-width) solid var(--border-color);
  padding-bottom: 0.5rem;
}

.modal-title-group {
  display: flex;
  flex-direction: column;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  text-transform: uppercase;
  line-height: 1;
}

.modal-code {
  font-weight: 700;
  color: var(--accent-color);
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.8rem;
  cursor: pointer;
  line-height: 1;
  color: var(--text-color);
  transition: color 0.15s ease;
}

.modal-close:hover {
  color: var(--accent-color);
}

.modal-body {
  font-size: 1.05rem;
  line-height: 1.6;
}

.modal-body p {
  margin-bottom: 1.2rem;
}

.modal-section-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  text-transform: uppercase;
  margin-top: 1.5rem;
  margin-bottom: 0.6rem;
  color: var(--accent-color);
  letter-spacing: 0.03em;
}

.modal-questions-list {
  padding-left: 1.2rem;
  margin-bottom: 1.5rem;
}

.modal-questions-list li {
  margin-bottom: 0.4rem;
}

/* Responsive Styles */
@media (max-width: 1100px) {
  body {
    padding: 1.5rem;
  }
  .brand-section h1 {
    font-size: 3rem;
  }
  .app-container {
    flex-direction: column;
  }
  .side-panel {
    max-width: 100%;
    min-width: 100%;
    position: relative;
    top: 0;
    height: auto;
    max-height: 500px;
    box-shadow: none;
  }
  .bmc-grid {
    grid-template-rows: 240px 240px 200px;
  }
}

@media (max-width: 768px) {
  .bmc-grid {
    display: flex;
    flex-direction: column;
    height: auto;
  }
  .bmc-block {
    min-height: 250px;
  }
  .sticky-note {
    width: calc(33.33% - 0.4rem);
  }
  header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  body {
    padding: 1rem;
  }
  .brand-section h1 {
    font-size: 2.2rem;
  }
  .sticky-note {
    width: 100%;
  }
}

/* Print CSS to export as Landscape PDF */
@media print {
  @page {
    size: A4 landscape;
    margin: 1cm;
  }
  
  body {
    background-color: #ffffff;
    color: #000000;
    padding: 0;
  }
  
  header,
  .side-panel,
  .canvas-dashboard,
  .block-actions,
  .note-actions,
  dialog {
    display: none !important;
  }
  
  .app-container {
    display: block;
  }
  
  .canvas-wrapper {
    width: 100%;
  }
  
  .bmc-grid {
    grid-template-rows: 280px 280px 200px;
    width: 100%;
    height: 100%;
    border: 3px solid #000000;
    background-color: #000000;
    page-break-inside: avoid;
  }
  
  .bmc-block {
    background-color: #ffffff;
    padding: 0.8cm;
    border: none;
  }
  
  .block-title {
    font-size: 1.1rem;
  }
  
  .sticky-note {
    box-shadow: none;
    border: 1px solid #000000;
    background-color: #ffffff !important;
    color: #000000 !important;
    font-size: 0.75rem;
    min-height: 60px;
    width: calc(50% - 0.2rem);
  }
}

/* Animations */
@keyframes slide-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}