/* OncoEdge theme – migrated from shared-theme.css with oe-app scroll authority */

:root {
  --glass-card-bg: rgba(30, 30, 40, 0.45);
  --glass-card-border: rgba(255, 255, 255, 0.15);
  --auth-page-bg: url('https://images.unsplash.com/photo-1557683316-973673baf926?q=80&w=2029&auto=format&fit=crop');
  --bg-gradient-start: #0f172a;
  --bg-gradient-mid: #1e1b4b;
  --bg-gradient-end: #3b0764;
  --text-color: #ffffff;
  --card-bg: rgba(0, 0, 0, 0.4);
  --card-bg-rgb: 0, 0, 0;
  --card-border: rgba(139, 92, 246, 0.3);
  --banner-bg: rgba(0, 0, 0, 0.5);
  --banner-glass-bg: rgba(255, 255, 255, 0.15);
  --banner-glass-border: rgba(255, 255, 255, 0.2);
  --option-bg: rgba(0, 0, 0, 0.3);
  --option-hover-bg: rgba(139, 92, 246, 0.2);
  --option-selected-bg: rgba(139, 92, 246, 0.5);
  --option-selected-border: rgba(139, 92, 246, 1);
  --option-marker-bg: #4b5563;
  --option-marker-selected-bg: #8b5cf6;
  --accent-color: #a855f7;
  --accent-gradient-start: #22d3ee;
  --accent-gradient-end: #a855f7;
  --dialog-bg: #1f2937;
  --btn-primary-bg: #7c3aed;
  --btn-primary-border: #8b5cf6;
  --btn-primary-hover: #8b5cf6;
  --btn-secondary-bg: #374151;
  --btn-secondary-border: #4b5563;
  --btn-secondary-hover: #4b5563;
  --scrollbar-track: rgba(0, 0, 0, 0.2);
  --scrollbar-thumb: rgba(139, 92, 246, 0.5);
  --scrollbar-thumb-hover: rgba(139, 92, 246, 0.8);
  --muted-text: #9ca3af;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  --unattempted-bg: rgba(245, 158, 11, 0.3);
  --unattempted-border: rgba(245, 158, 11, 0.5);
  --unattempted-color: #fbbf24;
  --correct-answer-bg: #10b981;
  --wrong-answer-bg: #ef4444;
  --button-bg: #8b5cf6;
  --button-hover-bg: #7c3aed;
  --button-text: #ffffff;
  --input-bg: rgba(0, 0, 0, 0.3);
  --input-border: rgba(139, 92, 246, 0.5);
  --input-text: #ffffff;
  --modal-bg: rgba(0, 0, 0, 0.6);
  --modal-content-bg: #1a202c;
  --modal-content-border: rgba(139, 92, 246, 0.5);
  --chart-correct-dark: #10b981;
  --chart-incorrect-dark: #ef4444;
  --chart-unanswered-dark: #f59e0b;
}

[data-theme="light"] {
  --glass-card-bg: rgba(255, 255, 255, 0.5);
  --glass-card-border: rgba(0, 0, 0, 0.1);
  --auth-page-bg: url('https://images.unsplash.com/photo-1599389887503-345f43305b67?q=80&w=1974&auto=format&fit=crop');
  --bg-gradient-start: #f8fafc;
  --bg-gradient-mid: #f1f5f9;
  --bg-gradient-end: #e2e8f0;
  --text-color: #1e293b;
  --card-bg: rgba(255, 255, 255, 0.7);
  --card-bg-rgb: 255, 255, 255;
  --card-border: rgba(139, 92, 246, 0.3);
  --banner-bg: rgba(255, 255, 255, 0.72);
  --banner-glass-bg: rgba(255, 255, 255, 0.82);
  --banner-glass-border: rgba(148, 163, 184, 0.35);
  --option-bg: rgba(255, 255, 255, 0.7);
  --option-hover-bg: rgba(139, 92, 246, 0.1);
  --option-selected-bg: rgba(139, 92, 246, 0.2);
  --option-selected-border: rgba(139, 92, 246, 0.8);
  --option-marker-bg: #d1d5db;
  --option-marker-selected-bg: #8b5cf6;
  --accent-color: #8b5cf6;
  --accent-gradient-start: #06b6d4;
  --accent-gradient-end: #8b5cf6;
  --dialog-bg: #ffffff;
  --btn-primary-bg: #8b5cf6;
  --btn-primary-border: #7c3aed;
  --btn-primary-hover: #7c3aed;
  --btn-secondary-bg: #e5e7eb;
  --btn-secondary-border: #d1d5db;
  --btn-secondary-hover: #d1d5db;
  --scrollbar-track: rgba(0, 0, 0, 0.05);
  --scrollbar-thumb: rgba(139, 92, 246, 0.3);
  --scrollbar-thumb-hover: rgba(139, 92, 246, 0.5);
  --muted-text: #6b7280;
  --unattempted-bg: rgba(59, 130, 246, 0.2);
  --unattempted-border: rgba(59, 130, 246, 0.4);
  --unattempted-color: #3b82f6;
  --correct-answer-bg: #34d399;
  --wrong-answer-bg: #f87171;
  --button-bg: #3b82f6;
  --button-hover-bg: #2563eb;
  --button-text: #ffffff;
  --input-bg: rgba(255, 255, 255, 0.7);
  --input-border: rgba(59, 130, 246, 0.5);
  --input-text: #1a202c;
  --modal-bg: rgba(0, 0, 0, 0.4);
  --modal-content-bg: #f0f0f0;
  --modal-content-border: rgba(59, 130, 246, 0.5);
  --chart-correct-light: #16a34a;
  --chart-incorrect-light: #dc2626;
  --chart-unanswered-light: #d97706;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

html {
  scroll-behavior: smooth;
  background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-mid), var(--bg-gradient-end));
}

html.oe-app-root,
html.oe-app-root body {
  height: 100%;
  min-height: 100dvh;
  overflow: hidden;
}

body {
  background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-mid), var(--bg-gradient-end));
  color: var(--text-color);
  transition: background 0.3s ease;
  overflow-x: hidden;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-mid), var(--bg-gradient-end));
  z-index: -1;
  pointer-events: none;
}

h1 {
  font-size: clamp(1.8rem, 5vw, 2.5rem);
  margin-bottom: 2rem;
  line-height: 1.3;
  text-align: center;
}

h2 {
  font-size: clamp(1.25rem, 4vw, 1.8rem);
  margin-bottom: 1rem;
  line-height: 1.3;
}

.gradient-text {
  background: linear-gradient(to right, var(--accent-gradient-start), var(--accent-gradient-end));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 600;
}

.card {
  background-color: var(--card-bg);
  -webkit-backdrop-filter: blur(12px) saturate(140%);
  backdrop-filter: blur(12px) saturate(140%);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: clamp(0.8rem, 2.5vw, 1.2rem);
  margin-bottom: 1rem;
  box-shadow: var(--oe-shadow-sm, 0 2px 8px -2px rgba(0, 0, 0, 0.12));
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  width: 100%;
  max-width: 100%;
}

.card-glass {
  background: var(--glass-card-bg);
  border: 1px solid var(--glass-card-border);
  -webkit-backdrop-filter: blur(15px);
  backdrop-filter: blur(15px);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

.btn {
  padding: clamp(0.6rem, 2.5vw, 0.8rem) clamp(1.5rem, 5vw, 2rem);
  border-radius: 10px;
  cursor: pointer;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid var(--card-border);
  background-color: var(--btn-secondary-bg);
  color: var(--text-color);
  font-size: clamp(0.9rem, 2.8vw, 1rem);
  min-height: 44px;
  white-space: nowrap;
  gap: 0.75rem;
  text-decoration: none;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.15);
}

.btn:hover:not(:disabled) {
  transform: translateY(-2px);
  background-color: var(--btn-secondary-hover);
  border-color: var(--accent-color);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.25);
}

.btn:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn:disabled,
.btn-disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none !important;
  box-shadow: none !important;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-gradient-start), var(--accent-gradient-end)) !important;
  border-color: transparent !important;
  color: white !important;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.4);
}

.btn-primary:hover:not(:disabled) {
  background: linear-gradient(135deg, var(--accent-gradient-start), var(--accent-gradient-end)) !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(139, 92, 246, 0.55);
  filter: brightness(1.1);
}

.btn-secondary {
  background-color: var(--btn-secondary-bg);
  border-color: var(--btn-secondary-border);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--btn-secondary-hover);
  border-color: var(--accent-color);
}

.theme-toggle,
.icon-header-button {
  padding: clamp(0.3rem, 1.5vw, 0.4rem);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  border: 1px solid var(--card-border);
  color: var(--text-color);
  transition: all 0.2s ease;
  min-width: 44px;
  min-height: 44px;
}

.theme-toggle:hover,
.icon-header-button:hover {
  background-color: var(--option-hover-bg);
}

.option {
  padding: clamp(0.75rem, 2.5vw, 1rem);
  margin: clamp(0.5rem, 1.5vw, 0.75rem) 0;
  border-radius: 8px;
  cursor: pointer;
  background-color: var(--option-bg);
  border: 1px solid var(--card-border);
  transition: all 0.2s ease;
  display: flex;
  align-items: flex-start;
  gap: clamp(0.75rem, 2vw, 1rem);
  min-height: 60px;
  word-wrap: break-word;
  text-align: left;
}

.option:hover {
  background-color: var(--option-hover-bg);
}

.option.selected {
  background-color: var(--option-selected-bg);
  border-color: var(--option-selected-border);
}

.option-marker {
  width: clamp(20px, 5vw, 24px);
  height: clamp(20px, 5vw, 24px);
  min-width: clamp(20px, 5vw, 24px);
  border-radius: 50%;
  background-color: var(--option-marker-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(0.625rem, 2vw, 0.75rem);
  font-weight: bold;
  flex-shrink: 0;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
  border-radius: 10px;
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 10px;
}

.hidden {
  display: none !important;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}