/* ==========================================================================
   EduPeak CEE/NEET Platform - Custom Visual Enhancement Styles
   Complements TailwindCSS with advanced transitions, scroll snaps, & 3D flips
   ========================================================================== */

/* 1. Global Custom Theme Settings */
:root {
  --glass-bg: rgba(17, 24, 39, 0.45);
  --glass-border: rgba(255, 255, 255, 0.05);
  --glass-border-hover: rgba(255, 255, 255, 0.12);
  --glass-shadow: rgba(0, 0, 0, 0.45);

  --color-physics: #06b6d4;      /* Tailwind Cyan-500 */
  --color-chemistry: #ec4899;    /* Tailwind Pink-500 */
  --color-biology: #10b981;      /* Tailwind Emerald-500 */
  --color-math: #f59e0b;         /* Tailwind Amber-500 */
  --color-mat: #eab308;          /* Tailwind Yellow-500 */
}

/* Custom Webkit scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.08);
  border-radius: 9999px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* 2. Glassmorphic Translucent Card Components */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow: 0 10px 30px var(--glass-shadow);
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  border-radius: 1.5rem;
}

.glass-card:hover {
  border-color: var(--glass-border-hover);
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.6);
}

.glass-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* 3. Responsive Navigation Items */
.nav-item {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  border: 1px solid transparent;
  display: flex;
  align-items: center;
  gap: 1rem;
  color: #9ca3af; /* gray-400 */
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  outline: none;
}

.nav-item i {
  font-size: 1.05rem;
  transition: all 0.2s ease;
  width: 18px;
  text-align: center;
}

.nav-item:hover {
  background: rgba(255, 255, 255, 0.04);
  color: #f3f4f6; /* gray-100 */
}

.nav-item.active {
  background: rgba(135, 77, 255, 0.08);
  border-color: rgba(135, 77, 255, 0.15);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
}

.nav-item.active i {
  color: #874dff;
  text-shadow: 0 0 8px rgba(135, 77, 255, 0.4);
}

/* Subject Nav Accents */
.nav-item[data-route="physics"].active i { color: var(--color-physics); text-shadow: 0 0 8px rgba(6, 182, 212, 0.4); }
.nav-item[data-route="chemistry"].active i { color: var(--color-chemistry); text-shadow: 0 0 8px rgba(236, 72, 153, 0.4); }
.nav-item[data-route="biology"].active i { color: var(--color-biology); text-shadow: 0 0 8px rgba(16, 185, 129, 0.4); }
.nav-item[data-route="mathematics"].active i { color: var(--color-math); text-shadow: 0 0 8px rgba(245, 158, 11, 0.4); }
.nav-item[data-route="mock-exam"].active i { color: #ef4444; text-shadow: 0 0 8px rgba(239, 68, 68, 0.4); }
.nav-item[data-route="contact"].active i { color: #06b6d4; text-shadow: 0 0 8px rgba(6, 182, 212, 0.4); }

/* 4. Semantic Badges & Action Buttons */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border: 1px solid transparent;
}

.badge-primary { background: rgba(135, 77, 255, 0.12); color: #c084fc; border-color: rgba(135, 77, 255, 0.25); }
.badge-success { background: rgba(16, 185, 129, 0.12); color: #34d399; border-color: rgba(16, 185, 129, 0.25); }
.badge-info { background: rgba(6, 182, 212, 0.12); color: #22d3ee; border-color: rgba(6, 182, 212, 0.25); }
.badge-warning { background: rgba(245, 158, 11, 0.12); color: #fbbf24; border-color: rgba(245, 158, 11, 0.25); }
.badge-danger { background: rgba(239, 68, 68, 0.12); color: #f87171; border-color: rgba(239, 68, 68, 0.25); }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.75rem;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, #874dff, #6366f1);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(135, 77, 255, 0.2);
}
.btn-primary:hover {
  transform: translateY(-1.5px);
  box-shadow: 0 6px 20px rgba(135, 77, 255, 0.35);
}
.btn-primary:active { transform: translateY(0); }

.btn-secondary {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: #f3f4f6;
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--glass-border-hover);
}

.btn-icon {
  width: 44px;
  height: 44px;
  padding: 0;
  border-radius: 0.75rem;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: #ffffff;
}
.btn-icon:hover {
  border-color: var(--glass-border-hover);
  background: rgba(255, 255, 255, 0.04);
}

/* 5. Dynamic SPA View Elements */
.view-section {
  width: 100%;
  height: 100%;
  overflow-y: auto;
  display: none;
}

.view-section.active {
  display: block;
  animation: fadeIn 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* Circular SVGs Progress Dashboard */
.progress-circle-wrapper {
  position: relative;
  width: 60px;
  height: 60px;
}

.progress-circle-svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.progress-circle-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.03);
  stroke-width: 5;
}

.progress-circle-bar {
  fill: none;
  stroke-width: 5;
  stroke-linecap: round;
  stroke-dasharray: 157; /* 2 * pi * r (r=25) */
  stroke-dashoffset: 157;
  transition: stroke-dashoffset 1s ease-out;
}

.progress-circle-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.8rem;
  font-weight: 800;
}

/* Subject completion trackers */
.sub-progress-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem;
  border-radius: 0.75rem;
  background: rgba(255, 255, 255, 0.01);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.sub-progress-card:hover {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--glass-border-hover);
  transform: translateY(-2px);
}

/* Scheduler checkboxes & rows */
.schedule-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.01);
  border-radius: 0.75rem;
  border-left: 4px solid #6b7280;
  transition: all 0.25s ease;
}

.schedule-row.active {
  background: rgba(135, 77, 255, 0.04);
}

.checkbox-container {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  color: #9ca3af;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
}

.checkbox-custom {
  width: 18px;
  height: 18px;
  border-radius: 6px;
  border: 1.5px solid #4b5563; /* gray-600 */
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  color: transparent;
  transition: all 0.15s ease;
}

.checkbox-container:hover .checkbox-custom {
  border-color: #9ca3af;
  background: rgba(255, 255, 255, 0.04);
}

.checkbox-container input {
  display: none;
}

.checkbox-container input:checked + .checkbox-custom {
  border-color: #10b981;
  background: #10b981;
  color: #ffffff;
}

/* 6. Advanced 3D Flashcard Carousel Widget */
.flashcard-stage {
  perspective: 1000px;
  width: 100%;
  height: 240px;
  cursor: pointer;
  position: relative;
}

.flashcard-flip-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
}

.flashcard-stage.flipped .flashcard-flip-inner {
  transform: rotateY(180deg);
}

.flashcard-face {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 1.5rem;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--glass-border);
  box-shadow: 0 8px 24px var(--glass-shadow);
}

.flashcard-front {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.03) 0%, rgba(255, 255, 255, 0.005) 100%);
  color: #f3f4f6;
}

.flashcard-back {
  background: linear-gradient(135deg, rgba(135, 77, 255, 0.08) 0%, rgba(17, 24, 39, 0.6) 100%);
  transform: rotateY(180deg);
  color: #ffffff;
  border-color: rgba(135, 77, 255, 0.2);
}

/* 7. Quiz Option Click Feedback States */
/* Mock Exam Option Buttons */
.mock-option {
  width: 100%;
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.015);
  border: 1px solid var(--glass-border);
  border-radius: 0.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.15s ease;
  font-size: 0.95rem;
  font-weight: 600;
  color: #e5e7eb;
  text-align: left;
}
.mock-option:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--glass-border-hover);
}
.mock-option-letter {
  display: inline-flex;
  width: 26px; height: 26px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  align-items: center;
  justify-content: center;
  margin-right: 0.75rem;
  font-size: 0.8rem;
  font-weight: 800;
  color: #9ca3af;
  border: 1px solid var(--glass-border);
  transition: all 0.15s ease;
  flex-shrink: 0;
}
.mock-option.selected { background: rgba(135,77,255,0.12); border-color: rgba(135,77,255,0.4); }
.mock-option.selected .mock-option-letter { background: #874dff; color: #fff; border-color: #874dff; }
.mock-option.correct { background: rgba(16,185,129,0.15); border-color: #10b981; }
.mock-option.correct .mock-option-letter { background: #10b981; color: #fff; border-color: #10b981; }
.mock-option.incorrect { background: rgba(239,68,68,0.15); border-color: #ef4444; }
.mock-option.incorrect .mock-option-letter { background: #ef4444; color: #fff; border-color: #ef4444; }
.mock-option-result-icon { font-size: 1.1rem; flex-shrink: 0; margin-left: 0.5rem; }
.mock-option.correct .mock-option-result-icon { color: #10b981; }
.mock-option.incorrect .mock-option-result-icon { color: #ef4444; }

/* Mock Exam Explanation Box */
.mock-explanation-box {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, rgba(6, 182, 212, 0.08) 100%);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 1rem;
  animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.mock-explanation-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: #10b981;
  margin-bottom: 0.75rem;
}

.mock-explanation-text {
  font-size: 0.9rem;
  line-height: 1.6;
  color: #d1d5db;
}

/* Chapter Quiz Option Styles */
.quiz-option {
  width: 100%;
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.015);
  border: 1px solid var(--glass-border);
  border-radius: 0.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all 0.15s ease;
  font-size: 0.95rem;
  font-weight: 600;
  color: #e5e7eb;
  text-align: left;
}

.quiz-option:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--glass-border-hover);
}

.quiz-option:disabled {
  cursor: not-allowed;
  opacity: 1;
}

.quiz-option.correct {
  background: rgba(16, 185, 129, 0.15);
  border-color: #10b981;
  color: #10b981;
}

.quiz-option.incorrect {
  background: rgba(239, 68, 68, 0.15);
  border-color: #ef4444;
  color: #ef4444;
}

.option-letter {
  display: inline-flex;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  align-items: center;
  justify-content: center;
  margin-right: 0.75rem;
  font-size: 0.8rem;
  font-weight: 800;
  color: #9ca3af;
  border: 1px solid var(--glass-border);
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.quiz-option.correct .option-letter {
  background: #10b981;
  color: #fff;
  border-color: #10b981;
}

.quiz-option.incorrect .option-letter {
  background: #ef4444;
  color: #fff;
  border-color: #ef4444;
}

.option-result-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  margin-left: 0.5rem;
}

.quiz-option.correct .option-result-icon {
  color: #10b981;
}

.quiz-option.incorrect .option-result-icon {
  color: #ef4444;
}

/* Quiz Explanation Box */
.quiz-explanation-box {
  margin-top: 1.5rem;
  padding: 1.25rem;
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.08) 0%, rgba(6, 182, 212, 0.08) 100%);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: 1rem;
  animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.quiz-explanation-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
  font-weight: 700;
  color: #10b981;
  margin-bottom: 0.75rem;
}

.quiz-explanation-text {
  font-size: 0.9rem;
  line-height: 1.6;
  color: #d1d5db;
}

/* 8. Full-screen Timed Mock Assessment viewports */
.mock-exam-workspace {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: #090d16;
  z-index: 1050;
  display: none;
  flex-direction: column;
  overflow: hidden;
}

.mock-exam-navbar {
  height: 70px;
  flex-shrink: 0;
}

.mock-exam-console {
  display: flex;
  flex-grow: 1;
  overflow: hidden;
}

.mock-question-panel {
  flex-grow: 1;
  height: 100%;
  overflow-y: auto;
}

.mock-palette-sidebar {
  flex-shrink: 0;
}

.palette-btn {
  aspect-ratio: 1;
  border-radius: 0.5rem;
  border: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.015);
  color: #9ca3af;
  font-size: 0.88rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.15s ease;
}

.palette-btn:hover {
  border-color: var(--glass-border-hover);
  color: #ffffff;
}

.palette-btn.active {
  box-shadow: 0 0 0 2px #ffffff;
}

/* Dynamic visual codes for CEE Nepal mock states */
.palette-btn.unvisited {
  background: rgba(255, 255, 255, 0.01);
  color: #4b5563;
}

.palette-btn.visited-unanswered {
  background: rgba(239, 68, 68, 0.12);
  border-color: rgba(239, 68, 68, 0.25);
  color: #ef4444;
}

.palette-btn.answered {
  background: rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.35);
  color: #10b981;
}

.palette-btn.marked {
  background: rgba(245, 158, 11, 0.15);
  border-color: rgba(245, 158, 11, 0.35);
  color: #f59e0b;
}

.exam-submit-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.82);
  backdrop-filter: blur(12px);
  z-index: 1060;
  display: none;
  align-items: center;
  justify-content: center;
}

/* 9. Contact expanding accordions */
.faq-row {
  border: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.005);
  border-radius: 0.75rem;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.faq-summary {
  padding: 1.1rem 1.25rem;
  font-weight: 700;
  font-size: 0.92rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  user-select: none;
  transition: all 0.15s ease;
}

.faq-summary:hover {
  background: rgba(255, 255, 255, 0.02);
}

.faq-arrow {
  font-size: 0.8rem;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  color: #9ca3af;
}

.faq-details {
  display: none;
  padding: 0 1.25rem 1.25rem 1.25rem;
  font-size: 0.85rem;
  color: #9ca3af;
  line-height: 1.55;
  animation: slideDown 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq-row.open {
  background: rgba(255, 255, 255, 0.02);
  border-color: var(--glass-border-hover);
}

.faq-row.open .faq-arrow {
  transform: rotate(180deg);
}

.faq-row.open .faq-details {
  display: block;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 10. Floating Utility Notes Scratchpad */
.scratchpad-launcher {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #874dff, #06b6d4);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  cursor: pointer;
  z-index: 95;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.scratchpad-launcher:hover {
  transform: scale(1.08) rotate(15deg);
}

.scratchpad-panel {
  position: fixed;
  bottom: 92px;
  right: 24px;
  width: 320px;
  height: 400px;
  background: #0c1220;
  border: 1px solid var(--glass-border-hover);
  border-radius: 1.5rem;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.65);
  z-index: 95;
  display: none;
  flex-direction: column;
  overflow: hidden;
  animation: scaleIn 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.8) translateY(20px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.scratchpad-body {
  background: #060a12;
}

.scratchpad-textarea {
  width: 100%;
  height: 100%;
  border: none;
  background: transparent;
  color: #ffffff;
  font-family: inherit;
  font-size: 0.9rem;
  padding: 1.25rem;
  resize: none;
  outline: none;
  line-height: 1.5;
}

/* 11. Toast Notifications overlay portal */
.toast-overlay {
  position: fixed;
  top: 30px;
  right: 30px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 12px;
  pointer-events: none;
}

.toast {
  padding: 0.9rem 1.25rem;
  border-radius: 0.75rem;
  background: #0c1220;
  border: 1px solid var(--glass-border-hover);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  color: #f3f4f6;
  font-size: 0.88rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  pointer-events: auto;
  animation: slideInLeft 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  transition: opacity 0.3s ease;
}

@keyframes slideInLeft {
  from { transform: translateX(100%) scale(0.9); opacity: 0; }
  to { transform: translateX(0) scale(1); opacity: 1; }
}

.toast.success i { color: var(--brand-success); }
.toast.info i { color: var(--brand-info); }
.toast.warning i { color: var(--brand-warning); }
.toast.danger i { color: #ef4444; }

/* 12. Input control valid/invalid support */
.input-control {
  background: rgba(17, 22, 37, 0.6);
  border: 1px solid var(--glass-border);
  color: #ffffff;
  border-radius: 0.75rem;
  padding: 0.85rem 1.15rem;
  outline: none;
  transition: all 0.2s ease;
}

.input-control::placeholder {
  color: #4b5563;
}

.input-control:focus {
  border-color: #874dff;
  box-shadow: 0 0 0 3px rgba(135, 77, 255, 0.25);
}

.input-control:user-valid {
  border-color: #10b981;
}

.input-control:user-invalid {
  border-color: #ef4444;
}

/* 13. Responsive Sidebar/Header Display toggles */
.mobile-header {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 64px;
  background: rgba(9, 13, 22, 0.82);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  display: none;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  z-index: 9;
}

@media (max-width: 768px) {
  .mobile-header {
    display: flex;
  }
  
  .view-section {
    padding: calc(64px + 1.25rem) 1rem 2rem 1rem !important;
    height: 100vh;
  }
  
  /* Mobile Hamburger drawer sheets */
  .drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.65);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }
  
  .drawer-overlay.active {
    opacity: 1;
    visibility: visible;
  }
  
  .drawer-sheet {
    position: fixed;
    top: 0;
    left: 0;
    width: 290px;
    height: 100%;
    background: #0c1220;
    border-right: 1px solid var(--glass-border-hover);
    box-shadow: 10px 0 40px rgba(0, 0, 0, 0.85);
    z-index: 1000;
    transform: translateX(-100%);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
  }
  
  .drawer-overlay.active .drawer-sheet {
    transform: translateX(0);
  }
  
  .drawer-header {
    padding: 1.25rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--glass-border);
  }
  
  .drawer-close {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.02);
    color: #f3f4f6;
  }
  
  .drawer-nav {
    flex-grow: 1;
    padding: 1.25rem 0.75rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    overflow-y: auto;
  }
  
  .drawer-user {
    padding: 1.25rem;
    border-top: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: rgba(12, 18, 32, 0.5);
  }

  /* Mock simulations adjustments on mobile */
  .mock-palette-sidebar {
    width: 100% !important;
    height: auto !important;
    max-height: 250px !important;
    border-left: none !important;
    border-top: 1px solid var(--glass-border-hover) !important;
  }
  
  .palette-grid {
    grid-template-columns: repeat(8, 1fr) !important;
    padding: 1rem !important;
    gap: 0.5rem !important;
  }
  
  .mock-q-controls {
    flex-direction: column !important;
    align-items: stretch !important;
  }
  
  .mock-controls-left {
    width: 100% !important;
  }
}