/* 🎨 WARM BEIGE & EDITORIAL LATTE LEARNING PLATFORM THEME */
:root {
  --bg-main: #FAF8F5;
  --bg-card: #FFFFFF;
  --bg-secondary: #F2ECE4;
  --bg-tertiary: #EAE3D9;
  --border-subtle: #E5DCD1;
  --border-strong: #D1C5B6;
  
  --text-main: #1C1917;
  --text-secondary: #6E675F;
  --text-muted: #9E958A;
  
  --accent-primary: #D97706;
  --accent-primary-hover: #B45309;
  --accent-primary-light: #FEF3C7;
  
  --accent-blue: #2563EB;
  --accent-blue-hover: #1D4ED8;
  --accent-blue-light: #EFF6FF;
  
  --accent-sage: #059669;
  --accent-sage-hover: #047857;
  --accent-sage-light: #ECFDF5;
  
  --sage-emerald: #059669;
  --sage-light: #ECFDF5;
  
  --brick-crimson: #B91C1C;
  --brick-light: #FDF2F2;
  
  --code-bg: #1E1E1E;
  --code-header: #252526;
  
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  
  --shadow-sm: 0 2px 8px -1px rgba(28, 25, 23, 0.04);
  --shadow-md: 0 4px 20px -2px rgba(28, 25, 23, 0.06);
  --shadow-lg: 0 10px 30px -4px rgba(28, 25, 23, 0.08);
  --shadow-hover: 0 12px 28px -4px rgba(28, 25, 23, 0.12);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition-fast: 0.15s ease;
  --transition-smooth: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-main);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* NAVBAR */
.navbar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.navbar-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-main);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: var(--accent-primary-light);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}



.nav-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.925rem;
  color: var(--text-secondary);
  transition: var(--transition-fast);
}

.nav-item:hover {
  background: var(--bg-secondary);
  color: var(--text-main);
}

.nav-item.active {
  background: var(--accent-primary-light);
  color: var(--accent-primary);
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0.85rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
}

.role-tag {
  padding: 0.2rem 0.5rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.role-tag.admin {
  background: var(--brick-light);
  color: var(--brick-crimson);
}

.role-tag.student {
  background: var(--sage-light);
  color: var(--sage-emerald);
}

.btn-logout {
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.85rem;
  transition: var(--transition-fast);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.btn-logout:hover {
  background: var(--brick-light);
  color: var(--brick-crimson);
  border-color: #FCA5A5;
}

/* CONTAINER */
.main-container {
  max-width: 1200px;
  width: 100%;
  margin: 2rem auto;
  padding: 0 1.5rem;
  flex: 1;
}

/* HERO & BANNER */
.hero-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem 2.25rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.hero-card::after {
  content: "";
  position: absolute;
  right: -50px;
  top: -50px;
  width: 180px;
  height: 180px;
  background: radial-gradient(circle, var(--accent-primary-light) 0%, rgba(254, 243, 199, 0) 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-title {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
  margin-bottom: 0.35rem;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* TAB NAVIGATION */
.tab-nav-container {
  display: flex;
  gap: 0.75rem;
  border-bottom: 2px solid var(--border-subtle);
  margin-bottom: 2rem;
  padding-bottom: 0.25rem;
}

.tab-button {
  background: transparent;
  border: none;
  padding: 0.85rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  transition: var(--transition-smooth);
  position: relative;
}

.tab-button:hover {
  color: var(--text-main);
  background: var(--bg-secondary);
}

.tab-button.active {
  color: var(--accent-primary);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-bottom-color: var(--bg-card);
  margin-bottom: -2px;
  box-shadow: var(--shadow-sm);
}

.tab-button .badge {
  background: var(--bg-secondary);
  color: var(--text-main);
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
}

.tab-button.active .badge {
  background: var(--accent-primary-light);
  color: var(--accent-primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.25s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* PROGRESS BAR */
.progress-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
  font-weight: 700;
  font-size: 0.95rem;
}

.progress-track {
  width: 100%;
  height: 12px;
  background: var(--bg-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-primary), #EA580C);
  border-radius: var(--radius-full);
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.progress-fill.sage {
  background: linear-gradient(90deg, #2D6A4F, #52B788);
}

/* CARDS GRID */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.module-card, .lesson-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.module-card:hover, .lesson-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-strong);
}

.card-top {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.card-icon {
  font-size: 2rem;
  background: var(--bg-secondary);
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
}

.card-desc {
  font-size: 0.925rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-fast);
  border: none;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--accent-primary);
  color: #FFFFFF !important;
  box-shadow: 0 2px 10px rgba(217, 119, 6, 0.3);
}

.btn-primary:hover {
  background: var(--accent-primary-hover);
  color: #FFFFFF !important;
  transform: translateY(-1px);
}

.btn-blue {
  background: #2563EB !important;
  color: #FFFFFF !important;
  box-shadow: 0 4px 0 #1D4ED8, 0 6px 16px rgba(37, 99, 235, 0.3) !important;
}
.btn-blue:hover {
  background: #1D4ED8 !important;
  color: #FFFFFF !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 0 #1E40AF, 0 8px 20px rgba(37, 99, 235, 0.4) !important;
}
.btn-blue:active {
  transform: translateY(2px) !important;
  box-shadow: 0 2px 0 #1E40AF !important;
}

.btn-amber {
  background: #D97706 !important;
  color: #FFFFFF !important;
  box-shadow: 0 4px 0 #B45309, 0 6px 16px rgba(217, 119, 6, 0.3) !important;
}
.btn-amber:hover {
  background: #B45309 !important;
  color: #FFFFFF !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 0 #92400E, 0 8px 20px rgba(217, 119, 6, 0.4) !important;
}
.btn-amber:active {
  transform: translateY(2px) !important;
  box-shadow: 0 2px 0 #92400E !important;
}

.btn-emerald {
  background: #059669 !important;
  color: #FFFFFF !important;
  box-shadow: 0 4px 0 #047857, 0 6px 16px rgba(5, 150, 105, 0.3) !important;
}
.btn-emerald:hover {
  background: #047857 !important;
  color: #FFFFFF !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 0 #065F46, 0 8px 20px rgba(5, 150, 105, 0.4) !important;
}
.btn-emerald:active {
  transform: translateY(2px) !important;
  box-shadow: 0 2px 0 #065F46 !important;
}

.fancy-3d-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.5rem;
  border-radius: 14px;
  font-weight: 800;
  font-size: 1rem;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  border: none;
  font-family: var(--font-sans);
  letter-spacing: -0.01em;
  color: #FFFFFF !important;
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-main);
  border: 1px solid var(--border-subtle);
}

.btn-secondary:hover {
  background: var(--bg-tertiary);
}

.btn-success {
  background: var(--sage-emerald);
  color: #FFFFFF !important;
}

.btn-success:hover {
  background: #047857;
  color: #FFFFFF !important;
}

.btn-sm {
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
}

/* CALLOUT BOXES */
.callout {
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-md);
  margin: 1.5rem 0;
  border-left: 4px solid;
  background: var(--bg-card);
  box-shadow: var(--shadow-sm);
}

.callout-sage {
  border-color: var(--sage-emerald);
  background: var(--sage-light);
}

.callout-brick {
  border-color: var(--brick-crimson);
  background: var(--brick-light);
}

.callout-amber {
  border-color: var(--accent-primary);
  background: var(--accent-primary-light);
}

.callout-title {
  font-weight: 700;
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* SELF-CHECK BOX */
.self-check-box {
  background: var(--bg-card);
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin: 2rem 0;
}

.check-input-group {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

.check-input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.95rem;
}

.check-input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-light);
}

/* FORM ELEMENTS */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
  color: var(--text-main);
}

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  background: var(--bg-card);
  color: var(--text-main);
  transition: var(--transition-fast);
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px var(--accent-primary-light);
}

/* CODE BLOCKS (VS CODE DARK+) */
.code-container {
  background: var(--code-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin: 1.5rem 0;
  box-shadow: var(--shadow-md);
}

.code-header {
  background: var(--code-header);
  padding: 0.6rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.window-dots {
  display: flex;
  gap: 6px;
}

.window-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background: #FF5F56; }
.dot-yellow { background: #FFBD2E; }
.dot-green { background: #27C93F; }

.code-filename {
  color: #CCCCCC;
  font-family: var(--font-mono);
  font-size: 0.825rem;
}

.code-content {
  padding: 1.25rem;
  color: #D4D4D4;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
}

/* FOOTER */
.footer {
  margin-top: auto;
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-card);
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* FEEDBACK & REFLECTION SYSTEM (STARS & TASK SLIDERS) */
.star-rating-container {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.star-rating {
  display: inline-flex;
  gap: 0.35rem;
  font-size: 2rem;
  cursor: pointer;
  user-select: none;
}

.star-item {
  color: #D1C5B6;
  transition: transform 0.15s ease, color 0.15s ease;
}

.star-item:hover,
.star-item.active,
.star-item.hover-active {
  color: #F59E0B;
  transform: scale(1.15);
}

.star-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

/* TASK FEEDBACK CARDS */
.task-feedback-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.task-feedback-card {
  background: var(--bg-main);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--accent-primary);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.task-feedback-card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.task-feedback-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.task-feedback-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* DIFFICULTY BADGES */
.diff-badge {
  font-size: 0.78rem;
  font-weight: 800;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.2s ease;
}

.diff-1 { background: #ECFDF5; color: #065F46; border: 1px solid #A7F3D0; } /* Bardzo łatwe */
.diff-2 { background: #F0FDF4; color: #166534; border: 1px solid #BBF7D0; } /* Łatwe */
.diff-3 { background: #FEF3C7; color: #92400E; border: 1px solid #FDE68A; } /* Średnie */
.diff-4 { background: #FFEDD5; color: #9A3412; border: 1px solid #FED7AA; } /* Trudne */
.diff-5 { background: #FEF2F2; color: #991B1B; border: 1px solid #FECACA; } /* Bardzo trudne */

/* SLIDER COMPONENT */
.slider-group {
  margin-bottom: 1rem;
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-top: 0.35rem;
}

.difficulty-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(90deg, #10B981 0%, #34D399 25%, #F59E0B 50%, #F97316 75%, #EF4444 100%);
  outline: none;
  cursor: pointer;
  margin: 0.5rem 0;
}

.difficulty-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 3px solid var(--accent-primary);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.difficulty-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  border-color: var(--accent-primary-hover);
}

.difficulty-slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 3px solid var(--accent-primary);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  cursor: pointer;
}

/* WORST PART TEXTAREA */
.worst-part-box {
  margin-top: 0.75rem;
}

.worst-part-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.worst-part-textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9rem;
  color: var(--text-main);
  resize: vertical;
  min-height: 55px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.worst-part-textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.15);
}

/* RESPONSIVENESS */
@media (max-width: 768px) {
  .hero-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
  }
  .tab-nav-container {
    overflow-x: auto;
    white-space: nowrap;
  }
  .cards-grid {
    grid-template-columns: 1fr;
  }
}