/* ==========================================================================
   민트영어 프리미엄 지문 분석기 디자인 시스템 (Vanilla CSS)
   Textbook: NE Neungyul (Min) Common English 1
   ========================================================================== */

:root {
  --font-primary: 'Outfit', 'Noto Sans KR', sans-serif;
  
  /* Light Mode Palette */
  --bg-app: #f0f7f7;
  --bg-gradient: linear-gradient(135deg, #e0f2f1 0%, #e0f7fa 100%);
  --bg-card: rgba(255, 255, 255, 0.85);
  --border-card: rgba(255, 255, 255, 0.5);
  --shadow-card: 0 8px 32px 0 rgba(0, 180, 170, 0.06);
  
  --color-text-main: #1f2937;
  --color-text-muted: #4b5563;
  --color-text-light: #9ca3af;
  
  /* Brand Theme Colors */
  --mint-primary: #00d2c4;
  --mint-hover: #00b8ab;
  --mint-light: #e0f2f1;
  --blue-primary: #3b82f6;
  --blue-hover: #2563eb;
  --blue-light: #dbeafe;
  --dark-mint: #00796b;
  
  --gradient-brand: linear-gradient(135deg, var(--mint-primary) 0%, var(--blue-primary) 100%);
  
  /* Functional Status */
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #06b6d4;
  
  --line-height-worksheet: 2.2;
}

body.dark-mode {
  --bg-app: #0f172a;
  --bg-gradient: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
  --bg-card: rgba(30, 41, 59, 0.75);
  --border-card: rgba(255, 255, 255, 0.08);
  --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
  
  --color-text-main: #f1f5f9;
  --color-text-muted: #cbd5e1;
  --color-text-light: #64748b;
  
  --mint-light: rgba(0, 210, 196, 0.15);
  --blue-light: rgba(59, 130, 246, 0.15);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

body {
  font-family: var(--font-primary);
  background: var(--bg-app);
  color: var(--color-text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  line-height: 1.6;
}

.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header & Logo styling */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2.5rem;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-card);
  box-shadow: 0 4px 20px 0 rgba(0, 0, 0, 0.02);
  z-index: 100;
  position: sticky;
  top: 0;
}

.logo-area {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--mint-hover);
  letter-spacing: -0.5px;
}

.brand-subtitle {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Main Dashboard layout */
.dashboard-main {
  flex: 1;
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 2rem;
  padding: 2rem 2.5rem;
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}

.sidebar-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.content-section {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  min-width: 0;
}

/* Glassmorphic cards */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-card);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  overflow: hidden;
  position: relative;
}

.welcome-card {
  background: linear-gradient(135deg, rgba(0, 210, 196, 0.08) 0%, rgba(59, 130, 246, 0.08) 100%), var(--bg-card);
}

.mint-badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--mint-light);
  color: var(--dark-mint);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 50px;
  margin-bottom: 0.75rem;
}

.glass-card h2 {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.glass-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-text-main);
}

.glass-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Selector and Inputs */
.custom-select {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border-card);
  background: var(--bg-app);
  color: var(--color-text-main);
  font-family: var(--font-primary);
  font-size: 0.95rem;
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2300D2C4' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1.25rem;
}

.passage-meta-info {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-card);
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.meta-pill {
  padding: 0.2rem 0.6rem;
  background: var(--bg-app);
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

/* Buttons */
.action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  transform: translateY(0);
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.action-btn:hover {
  transform: translateY(-2px);
}

.primary-btn {
  background: var(--gradient-brand);
  color: white;
  box-shadow: 0 4px 15px rgba(0, 210, 196, 0.2);
}

.outline-btn {
  background: transparent;
  border: 1px solid var(--mint-primary);
  color: var(--color-text-main);
}

.outline-btn:hover {
  background: var(--mint-light);
}

.icon-btn {
  background: var(--bg-app);
  border: 1px solid var(--border-card);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-text-main);
}

/* Tabs */
.analysis-tabs {
  display: flex;
  gap: 0.5rem;
  background: var(--bg-card);
  padding: 0.35rem;
  border-radius: 12px;
  border: 1px solid var(--border-card);
  overflow-x: auto;
}

.tab-btn {
  flex: 1;
  min-width: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-family: var(--font-primary);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
}

.tab-btn.active {
  background: var(--mint-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(0, 210, 196, 0.15);
}

.tab-pane {
  display: none;
  animation: fadeIn 0.4s ease forwards;
}

.tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Analysis view */
.sentence-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  padding: 1.25rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-card);
}

.sentence-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.sentence-number {
  font-weight: 700;
  color: var(--mint-hover);
  font-size: 0.85rem;
}

.sentence-eng {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.5;
}

.sentence-kor {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.chunking-flow-wrapper {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border-card);
}

.chunk-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.chunking-flow-path {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.chunk-box {
  background: rgba(0, 210, 196, 0.03);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  padding: 0.75rem 1rem;
}

.chunk-eng {
  font-weight: 600;
  color: var(--blue-primary);
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.chunk-kor {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin-bottom: 0.4rem;
}

.chunk-tip-bubble {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  background: var(--bg-card);
  padding: 0.4rem 0.6rem;
  border-radius: 6px;
  border-left: 3px solid var(--mint-primary);
}

/* Vocab tab */
.vocab-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 1rem;
}

.vocab-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.vocab-spelling {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--mint-hover);
}

.vocab-badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.vocab-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.syn-badge {
  background: var(--blue-light);
  color: var(--blue-primary);
}

.ant-badge {
  background: rgba(239, 68, 68, 0.1);
  color: var(--color-danger);
}

.vocab-meaning {
  font-size: 0.92rem;
  font-weight: 700;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  background: var(--mint-light);
  color: var(--dark-mint);
  width: fit-content;
}

.vocab-meaning.masked {
  filter: blur(5px);
  cursor: pointer;
}

.vocab-desc {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.4;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-card);
}

/* Grammar tab */
.grammar-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-card);
}

.grammar-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.grammar-tag {
  font-weight: 700;
  color: var(--blue-primary);
  font-size: 1rem;
}

.grammar-sent-ref {
  font-size: 0.82rem;
  color: var(--color-text-light);
  font-weight: 600;
}

.grammar-target-box {
  background: var(--bg-app);
  padding: 0.75rem 1rem;
  border-radius: 8px;
  border-left: 4px solid var(--blue-primary);
  margin-bottom: 1rem;
}

.grammar-target-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-light);
  margin-bottom: 0.25rem;
  text-transform: uppercase;
}

.grammar-target-text {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-main);
}

.grammar-explanation-text {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Flow chart */
.flow-step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
  display: flex;
  gap: 1.25rem;
  align-items: center;
  box-shadow: var(--shadow-card);
}

.flow-icon-box {
  font-size: 2rem;
  min-width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--mint-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

.flow-step-body {
  display: flex;
  flex-direction: column;
}

.flow-step-title {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}

.flow-step-desc {
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

.flow-arrow {
  display: flex;
  justify-content: center;
  color: var(--color-text-light);
  font-size: 1.5rem;
  padding: 0.5rem 0;
}

/* Worksheets & Interactive tests */
.worksheet-controls-row {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.filter-choice-btn {
  padding: 0.5rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border-card);
  background: var(--bg-card);
  font-family: var(--font-primary);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  color: var(--color-text-muted);
}

.filter-choice-btn.active-choice {
  background: var(--mint-primary);
  color: white;
  border-color: var(--mint-primary);
}

.worksheet-paper {
  background: white;
  color: #111111 !important;
  border-radius: 12px;
  border: 1px solid #dddddd;
  padding: 2.5rem;
  min-height: 500px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

.paper-title-area {
  text-align: center;
  margin-bottom: 1.5rem;
  border-bottom: 2px double #111111;
  padding-bottom: 1rem;
}

.paper-school-name {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 2px;
  color: #555555;
  text-transform: uppercase;
}

.paper-title {
  font-size: 1.6rem;
  font-weight: 800;
  margin: 0.35rem 0;
  color: #111111;
}

.paper-subtitle {
  font-size: 0.85rem;
  font-weight: 600;
  color: #666666;
}

.paper-meta-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-bottom: 1px solid #cccccc;
  padding-bottom: 0.5rem;
}

.vocab-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.vocab-table th, .vocab-table td {
  border: 1px solid #aaaaaa;
  padding: 0.6rem 1rem;
  font-size: 0.95rem;
}

.vocab-table th {
  background: #f5f5f5;
  font-weight: 700;
}

.center-td {
  text-align: center;
  font-weight: 700;
}

.answer-space-td {
  position: relative;
}

.vocab-input-field {
  width: 100%;
  border: none;
  outline: none;
  font-family: var(--font-primary);
  font-size: 0.95rem;
  padding: 0.2rem;
  background: transparent;
}

.vocab-input-field:focus {
  background: #f9f9f9;
}

/* Blank passage test */
.blank-challenge-passage {
  font-size: 1.1rem;
  line-height: var(--line-height-worksheet);
  text-align: justify;
}

.blank-sentence-block {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px dashed #e5e5e5;
}

.blank-sentence-eng {
  color: #111111;
  font-weight: 500;
}

.blank-sentence-kor {
  font-size: 0.9rem;
  color: #666666;
  margin-top: 0.25rem;
}

.blank-test-input {
  border: none;
  border-bottom: 2px solid var(--mint-primary);
  outline: none;
  text-align: center;
  font-weight: 700;
  font-family: var(--font-primary);
  font-size: 1.05rem;
  color: #111111;
  padding: 0;
  background: transparent;
}

.consonant-hint {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-right: 0.25rem;
  vertical-align: super;
}

.feedback-msg {
  font-size: 0.85rem;
  font-weight: 700;
  margin-left: 0.5rem;
}

.feedback-msg.correct {
  color: var(--color-success);
}

.feedback-msg.wrong {
  color: var(--color-danger);
}

.answer-key-box {
  background: #f9f9f9;
  border: 1px solid #dddddd;
  border-radius: 8px;
  padding: 1.25rem;
  margin-top: 1.5rem;
}

.answer-key-box h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: #111111;
}

.answer-key-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 0.5rem;
  font-size: 0.9rem;
  color: #333333;
}

/* Expected questions UI */
.question-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-card);
}

.question-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.question-badge {
  background: var(--blue-light);
  color: var(--blue-primary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.question-num {
  font-weight: 700;
  font-size: 0.88rem;
  color: var(--color-text-light);
}

.question-text {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.6;
  margin-bottom: 1.25rem;
  white-space: pre-wrap;
}

.question-options {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.question-option {
  display: flex;
  align-items: center;
  text-align: left;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-card);
  border-radius: 8px;
  background: var(--bg-card);
  font-family: var(--font-primary);
  font-size: 0.92rem;
  cursor: pointer;
  outline: none;
  transition: all 0.2s ease;
}

.question-option:hover {
  background: var(--mint-light);
  border-color: var(--mint-primary);
}

.opt-num {
  font-weight: 700;
  margin-right: 0.5rem;
  color: var(--mint-hover);
}

.question-option.correct {
  background: rgba(16, 185, 129, 0.15);
  border-color: var(--color-success);
  color: var(--color-success);
  font-weight: 700;
}

.question-option.wrong {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--color-danger);
  color: var(--color-danger);
}

.question-hint-box {
  background: rgba(245, 158, 11, 0.08);
  border-left: 4px solid var(--color-warning);
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

.question-textarea-mock {
  width: 100%;
  height: 80px;
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border-card);
  background: var(--bg-app);
  color: var(--color-text-main);
  font-family: var(--font-primary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
  resize: none;
  outline: none;
}

.question-explanation {
  margin-top: 1.25rem;
  padding: 1rem;
  background: var(--bg-app);
  border-radius: 8px;
  border: 1px solid var(--border-card);
  font-size: 0.88rem;
  line-height: 1.5;
}

.phase-lock-overlay {
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  border-radius: 16px;
  padding: 2.5rem;
  text-align: center;
  margin-top: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.lock-icon {
  font-size: 3rem;
  color: var(--color-warning);
  margin-bottom: 1rem;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

.lock-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: white;
}

.lock-desc {
  font-size: 0.9rem;
  color: #94a3b8;
  margin-bottom: 1.5rem;
}

/* Print stylesheets matching the blueprint */
@media print {
  body {
    background: white !important;
    color: black !important;
  }
  
  .app-header, 
  .dashboard-main > .sidebar-section,
  .analysis-tabs,
  .worksheet-controls-row,
  .action-btn,
  .outline-btn,
  .print-only-hide,
  .no-print,
  .app-footer {
    display: none !important;
  }
  
  .dashboard-main {
    display: block !important;
    padding: 0 !important;
    margin: 0 !important;
    max-width: 100% !important;
  }
  
  .glass-card {
    background: transparent !important;
    border: none !important;
    box-shadow: none !important;
    padding: 0 !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
  }
  
  .worksheet-paper {
    border: none !important;
    padding: 0 !important;
    box-shadow: none !important;
    width: 100% !important;
  }
  
  /* Input text fields in printing layout should render as standard lines */
  .blank-test-input {
    border: none !important;
    border-bottom: 1px solid black !important;
    width: 120px !important;
    display: inline-block !important;
    background: transparent !important;
  }
  
  .vocab-input-field {
    display: none !important;
  }
  
  .answer-space-td::after {
    content: "___________________";
    color: #666;
  }
  
  .feedback-msg,
  .answer-key-box {
    display: none !important;
  }
}

/* Mobile responsive media queries (width <= 768px) */
@media (max-width: 768px) {
  .dashboard-main {
    grid-template-columns: 1fr;
    padding: 1rem;
    gap: 1rem;
  }
  
  .app-header {
    padding: 1rem;
  }
  
  .brand-title {
    font-size: 1.1rem;
  }
  
  .vocab-grid {
    grid-template-columns: 1fr; /* 1 column on mobile */
  }
  
  .analysis-tabs {
    flex-wrap: nowrap;
    overflow-x: auto; /* horizontally scrollable tab menu */
    justify-content: flex-start;
  }
  
  .tab-btn {
    flex: 0 0 auto;
  }
}