/* Design tokens */
:root {
  --color-primary: #667eea;
  --color-primary-dark: #764ba2;
  --color-success: #28a745;
  --color-success-gradient-start: #11998e;
  --color-success-gradient-end: #38ef7d;
  --color-focus: #258cfb;
  --color-text: #333;
  --color-text-muted: #666;
  --color-border-light: #e0e0e0;
  --color-bg-light: #f8f9fa;
  --color-gear-base: #d0d4db;
  --color-gear-gold: #FFD700;
  --color-gear-silver: #8a8a8a;
  --color-gear-bronze: #CD7F32;
  --color-gear-none: #808080;
  --color-accent-blue: #3b82f6;
  --color-accent-green: #22c55e;
  --color-accent-red: #ef4444;
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  --gradient-success: linear-gradient(135deg, var(--color-success-gradient-start) 0%, var(--color-success-gradient-end) 100%);
  --shadow-card: 0 2px 4px rgba(0, 0, 0, 0.1);
  --transition-speed: 0.3s;
}

html {
  font-size: 14px;
  position: relative;
  min-height: 100%;
}

@media (min-width: 768px) {
  html {
    font-size: 16px;
  }
}

body {
  margin-bottom: 60px;
}

.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
  box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem var(--color-focus);
}

.form-floating>.form-control-plaintext::placeholder,
.form-floating>.form-control::placeholder {
  color: var(--bs-secondary-color);
  text-align: end;
}

.form-floating>.form-control-plaintext:focus::placeholder,
.form-floating>.form-control:focus::placeholder {
  text-align: start;
}

/* Override Bootstrap .text-primary to match our custom primary color */
.text-primary {
  color: var(--color-primary) !important;
}

/* Navbar link color tied to design-system text token (replaces Bootstrap .text-dark) */
.nav-link-themed {
  color: var(--color-text) !important;
}

/* Score display */
.score-display {
  font-size: 3rem;
  font-weight: bold;
  margin: 1rem 0;
}

.form-check-input:checked {
  background-color: var(--color-success);
  border-color: var(--color-success);
}

.btn-primary {
  background: var(--gradient-primary);
  border: none;
  padding: 12px 40px;
  font-size: 1.1rem;
  transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px color-mix(in srgb, var(--color-primary) 40%, transparent);
}

.btn-success {
  background: var(--gradient-success);
  border: none;
  padding: 12px 40px;
  font-size: 1.1rem;
  transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
}

.btn-success:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px color-mix(in srgb, var(--color-success-gradient-end) 40%, transparent);
}

.card {
  border-radius: 10px;
  border: none;
  box-shadow: var(--shadow-card);
}

.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 0.2rem color-mix(in srgb, var(--color-primary) 25%, transparent);
}

/* Shared form page styles (progress steps, questions, floating feedback) */
.progress-steps {
  display: flex;
  justify-content: space-between;
  position: relative;
}

.progress-steps::before {
  content: '';
  position: absolute;
  top: 20px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-border-light);
  z-index: 0;
}

.step {
  flex: 1;
  text-align: center;
  position: relative;
}

.step-number {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-border-light);
  color: #444;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  margin-bottom: 8px;
  position: relative;
  z-index: 2;
}

.step.active .step-number {
  background: var(--color-success);
  color: white;
}

.step.completed .step-number {
  background: var(--color-success);
  color: white;
}

.step-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.step.active .step-label {
  color: var(--color-success);
  font-weight: 600;
}

.step.completed .step-label {
  color: var(--color-success);
}

.question-item {
  background: var(--color-bg-light);
  border-radius: 8px;
  border-left: 4px solid var(--color-primary);
}

.question-text {
  color: var(--color-text);
  font-weight: 500;
}

.answer-options {
  padding-left: 1rem;
}

.floating-feedback {
  display: none;
  position: fixed;
  top: 80px;
  right: 40px;
  z-index: 1050;
  transition: opacity var(--transition-speed) ease;
  border-radius: 50px !important;
  padding-left: 1.5rem !important;
  padding-right: 1.5rem !important;
  background-color: rgba(255, 255, 255, 0.95) !important;
}

/* Gütesiegel status label inside floating feedback */
.gear-status-label {
  font-size: 0.8rem;
}

/* Fieldset/legend reset: semantic grouping without visual border */
fieldset {
  border: none;
  padding: 0;
  margin: 0;
  min-width: 0;
}

/* Global word-break safety for long German text and school names */
h1, h2, h3, h4, h5, h6,
.card-title,
.alert {
  overflow-wrap: break-word;
  word-break: break-word;
}

/* Admin toolbar — reusable pattern for all admin list pages */
.admin-toolbar {
  gap: 0.75rem;
}

.admin-toolbar-nav {
  flex-wrap: wrap;
}

/* ---------- Tablet breakpoint ---------- */
@media (max-width: 767.98px) {
  .results-gear-row {
    font-size: 2.5rem;
    gap: 0.4rem;
  }

  .score-display {
    font-size: 2.2rem;
  }

  .score-details .score-number {
    font-size: 2rem;
  }

  .grade-text {
    font-size: 1.2rem;
  }

  /* WCAG 2.1 AA touch targets: 44×44px minimum on tablet and below */
  .table .btn-sm,
  .admin-questions .btn-sm {
    min-height: 44px;
    min-width: 44px;
    padding: 0.4rem 0.6rem;
  }

  .btn-primary,
  .btn-success {
    padding: 10px 24px;
  }

  /* Admin toolbar: stack title and nav on separate lines */
  .admin-toolbar {
    flex-direction: column;
    align-items: flex-start !important;
  }

  .admin-toolbar-nav {
    width: 100%;
    justify-content: flex-start;
  }

  /* Reduce step circle on tablet for tighter fit */
  .step-number {
    width: 34px;
    height: 34px;
    font-size: 0.85rem;
  }

  .progress-steps::before {
    top: 17px;
  }

  .step-label {
    font-size: 0.75rem;
  }

  /* Admin question text: narrower max on tablet */
  .admin-questions .question-text {
    max-width: 200px;
  }

  /* EditQuestion option table: collapse fixed widths */
  .option-col-index { width: 80px; }
  .option-col-weight { width: 100px; }
  .option-col-actions { width: auto; min-width: 120px; }
}

/* ---------- Mobile breakpoint ---------- */
@media (max-width: 575.98px) {
  /* Floating feedback: convert to static block on mobile */
  .floating-feedback {
    position: static !important;
    margin: 0 0 1rem 0;
    border-radius: 8px !important;
    width: 100%;
  }

  /* Progress steps: compact numbers, truncate labels */
  .step-number {
    width: 30px;
    height: 30px;
    font-size: 0.8rem;
  }

  .progress-steps::before {
    top: 15px;
  }

  .step-label {
    font-size: 0.65rem;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  /* Results page */
  .results-gear-row {
    font-size: 1.8rem;
    gap: 0.3rem;
  }

  .score-display {
    font-size: 1.8rem;
  }

  .display-4 {
    font-size: 1.8rem;
  }

  /* Buttons: compact for mobile */
  .btn-primary,
  .btn-success {
    padding: 10px 20px;
    font-size: 1rem;
  }

  /* Admin questions filter: let selects shrink */
  .admin-questions select.form-select {
    min-width: 0 !important;
  }

  /* Card title + feedback badge stacking */
  .card-title-group {
    flex-direction: column;
    align-items: flex-start !important;
  }

  /* Admin toolbar: compact buttons */
  .admin-toolbar-nav {
    gap: 0.4rem;
  }

  .admin-toolbar-nav .btn {
    font-size: 0.85rem;
    padding: 0.35rem 0.6rem;
  }

  /* Admin toolbar user info: visually separate */
  .admin-toolbar-user {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding-top: 0.25rem;
    border-top: 1px solid var(--color-border-light);
    margin-top: 0.25rem;
  }

  .admin-toolbar-user .text-muted {
    margin: 0 !important;
  }

  /* EditQuestion option table: fully collapse column widths */
  .option-col-index { width: 60px; }
  .option-col-weight { width: 80px; }
  .option-col-actions { width: auto; }

  /* Tighter card padding on mobile for more content space */
  .card-body.p-3.p-md-5 {
    padding: 1rem !important;
  }

  /* Invitation code: compact letter spacing */
  .invitation-code-input {
    letter-spacing: 1px;
    font-size: 0.95rem;
  }

  /* Page1 collapse button: allow text wrapping */
  [data-bs-toggle="collapse"].btn {
    white-space: normal;
    text-align: left;
  }

  /* Page4 / form bottom controls stacking */
  .form-bottom-controls {
    flex-direction: column;
    align-items: stretch !important;
  }

  .form-bottom-controls > * {
    width: 100%;
  }

  .form-bottom-controls .btn {
    width: 100%;
  }
}

/* Gear grade color classes — applied via Razor instead of inline color */
.gear-color-gold .gear-fill { color: var(--color-gear-gold); }
.gear-color-silver .gear-fill { color: var(--color-gear-silver); }
.gear-color-bronze .gear-fill { color: var(--color-gear-bronze); }
.gear-color-none .gear-fill { color: var(--color-gear-none); }

/* Results page */
.score-details .score-number {
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--color-primary);
}

.question-page-wrap {
  background: linear-gradient(135deg,
      var(--question-page-bg, rgba(248, 249, 250, 0.3)),
      rgba(255, 255, 255, 0.3));
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 16px;
  padding: 0.75rem 0;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
}

.question-page-wrap .card {
  background-color: rgba(255, 255, 255, 0.85);
}

.gear-row {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.gear-meter {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 1em;
  height: 1em;
  line-height: 1;
  transition: transform var(--transition-speed) ease;
}

/* Fully achieved gear: slight scale-up */
.gear-meter.gear-achieved {
  transform: scale(1.08);
}

.gear-meter .gear-base,
.gear-meter .gear-fill {
  grid-area: 1 / 1;
  font-size: 1em;
  line-height: 1;
}

/* Base layer: always gray */
.gear-meter .gear-base {
  color: var(--color-gear-base);
}

/* Fill layer: colored, masked via JS for discrete steps.
   drop-shadow only on fully achieved gears to reduce GPU cost during real-time updates. */
.gear-meter.gear-achieved .gear-fill {
  filter: drop-shadow(0 0 4px currentColor);
}

.results-gear-row {
  font-size: 3.5rem;
  gap: 0.6rem;
}

.grade-display .gear-meter.gear-achieved {
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.15));
}

.grade-text {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  margin-top: 0.5rem;
  letter-spacing: 0.02em;
}

.score-details {
  margin: 2rem 0;
}

/* Per-page category accent colors */
.page-accent-blue {
  --page-accent: var(--color-accent-blue);
  --page-bg-accent: color-mix(in srgb, var(--color-accent-blue) 6%, white);
}

.page-accent-green {
  --page-accent: var(--color-accent-green);
  --page-bg-accent: color-mix(in srgb, var(--color-accent-green) 6%, white);
}

.page-accent-red {
  --page-accent: var(--color-accent-red);
  --page-bg-accent: color-mix(in srgb, var(--color-accent-red) 6%, white);
}

.question-page-wrap.accented {
  border-top: 4px solid var(--page-accent, var(--color-primary));
}

.question-item.accented-left {
  border-left: 4px solid var(--page-accent, var(--color-primary));
  background-color: var(--page-bg-accent, var(--color-bg-light));
}

/* Admin Questions: category color dot (next to dropdown) */
.category-select-wrap {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.category-dot,
.category-dot-inline {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
  background: var(--color-border-light);
}

.category-dot[data-page="2"],
.category-dot-inline[data-page="2"] { background: var(--color-accent-blue); }
.category-dot[data-page="3"],
.category-dot-inline[data-page="3"] { background: var(--color-accent-green); }
.category-dot[data-page="4"],
.category-dot-inline[data-page="4"] { background: var(--color-accent-red); }

/* Hide the dot when "Alle Bereiche" is selected */
.category-dot[data-page="0"] { display: none; }

/* Admin Questions: category-tinted table rows */
.admin-questions tr[data-page="2"] {
  background-color: color-mix(in srgb, var(--color-accent-blue) 6%, transparent);
}
.admin-questions tr[data-page="3"] {
  background-color: color-mix(in srgb, var(--color-accent-green) 6%, transparent);
}
.admin-questions tr[data-page="4"] {
  background-color: color-mix(in srgb, var(--color-accent-red) 6%, transparent);
}

/* Override striped alternation to keep tints visible */
.admin-questions .table-striped > tbody > tr[data-page]:nth-of-type(odd) {
  --bs-table-striped-bg: transparent;
}

/* Text overflow protection for admin tables */
.admin-questions .question-text {
  max-width: 400px;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  word-break: break-word;
}

.table td {
  overflow-wrap: break-word;
  word-break: break-word;
}

/* Results page: protect school data against long text overflow */
.card-body .col-md-6 {
  overflow-wrap: break-word;
  word-break: break-word;
  min-width: 0;
}

/* Admin table cell max-width hardening */
.table td {
  max-width: 350px;
}

/* Loading spinner for buttons during async operations */
.btn-loading {
  position: relative;
  pointer-events: none;
  opacity: 0.75;
}
.btn-loading .btn-text {
  visibility: hidden;
}
.btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1.25rem;
  height: 1.25rem;
  margin: -0.625rem 0 0 -0.625rem;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: btnSpin 0.6s linear infinite;
}
@keyframes btnSpin {
  to { transform: rotate(360deg); }
}

/* Prevent double-submit: disabled state for buttons during submission */
.btn[data-submitting="true"] {
  pointer-events: none;
  opacity: 0.65;
}

/* Invitation code input styling */
.invitation-code-input {
  letter-spacing: 2px;
  font-family: monospace;
}

/* EditQuestion option table column widths */
.option-col-index { width: 120px; }
.option-col-weight { width: 140px; }
.option-col-actions { width: 200px; }

/* Session timeout warning toast */
.session-warning-toast {
  display: none;
  z-index: 1100;
  max-width: 400px;
}

/* TOTP QR code image constraint */
.totp-qr-code {
  max-width: 250px;
}

/* Skip-to-content link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 1rem;
  z-index: 2000;
  padding: 0.5rem 1rem;
  background: var(--color-bg-light);
  color: var(--color-text);
  border: 2px solid var(--color-focus);
  border-radius: 4px;
}

.skip-link:focus {
  top: 0.5rem;
}

/* ============================
   Delight: Keyframe animations
   ============================ */

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

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

@keyframes gearPop {
  0% { transform: scale(0.6); opacity: 0; }
  60% { transform: scale(1.15); opacity: 1; }
  100% { transform: scale(1.08); }
}

@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes checkPulse {
  0% { box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.4); }
  70% { box-shadow: 0 0 0 6px rgba(40, 167, 69, 0); }
  100% { box-shadow: 0 0 0 0 rgba(40, 167, 69, 0); }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes countUp {
  from { opacity: 0; transform: scale(0.5); }
  50% { transform: scale(1.05); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes gearCelebrate {
  0%   { transform: scale(1.08); filter: brightness(1); }
  25%  { transform: scale(1.22) rotate(8deg); filter: brightness(1.15); }
  50%  { transform: scale(1.05) rotate(-4deg); filter: brightness(1); }
  75%  { transform: scale(1.12) rotate(1deg); }
  100% { transform: scale(1.08) rotate(0deg); filter: brightness(1); }
}

@keyframes gearGlowRing {
  0%   { transform: scale(0.6); opacity: 0.5; }
  100% { transform: scale(1.8); opacity: 0; }
}

/* Delight: Results page hero entrance */
.results-hero {
  animation: fadeInUp 0.6s ease-out both;
}

/* Delight: Results gear staggered entrance */
.results-gear-row .gear-meter {
  animation: gearPop 0.5s ease-out both;
}

.results-gear-row .gear-meter:nth-child(1) { animation-delay: 0.3s; }
.results-gear-row .gear-meter:nth-child(2) { animation-delay: 0.55s; }
.results-gear-row .gear-meter:nth-child(3) { animation-delay: 0.8s; }

/* Delight: Results score & grade entrance */
.results-score-reveal {
  animation: countUp 0.5s ease-out both;
  animation-delay: 1s;
}

.results-grade-reveal {
  animation: fadeInUp 0.4s ease-out both;
  animation-delay: 1.15s;
}

/* Delight: Certificate download button shimmer */
.btn-certificate {
  background-image: linear-gradient(
    110deg,
    var(--color-success-gradient-start) 0%,
    var(--color-success-gradient-end) 40%,
    rgba(255, 255, 255, 0.35) 50%,
    var(--color-success-gradient-end) 60%,
    var(--color-success-gradient-start) 100%
  );
  background-size: 200% auto;
  animation: shimmer 3s linear 2s infinite;
}

.btn-certificate:hover {
  animation: none;
  background-size: 100% auto;
}

/* Delight: Radio button check pulse */
.form-check-input:checked {
  animation: checkPulse 0.4s ease-out;
}

/* Delight: Gear celebrate when newly achieving full fill in real-time */
.gear-meter.gear-just-achieved {
  animation: gearCelebrate 0.6s ease-out;
  z-index: 10;
}

/* Expanding glow ring behind the gear on achievement */
.gear-meter.gear-just-achieved::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 2px solid currentColor;
  animation: gearGlowRing 0.5s ease-out both;
  pointer-events: none;
}

/* Delight: Floating feedback slide-in */
.floating-feedback[style*="display: block"],
.floating-feedback.is-visible {
  animation: slideInRight 0.35s ease-out;
}

/* Delight: Question item entrance (activated by JS) */
.question-item.animate-in {
  animation: fadeInUp 0.35s ease-out both;
}

/* Delight: Active step gentle pulse ring */
.step.active .step-number {
  box-shadow: 0 0 0 4px rgba(40, 167, 69, 0.15);
}

/* Delight: Card subtle hover lift */
.card {
  transition: box-shadow var(--transition-speed) ease;
}

/* Delight: Alert entrance animation */
.alert.fade.show {
  animation: fadeInUp 0.3s ease-out;
}

/* Delight: Invitation code success state */
.invitation-code-input:valid {
  border-color: var(--color-success);
}

/* Delight: Progress bar fill between completed steps */
.progress-steps .step.completed + .step::before {
  content: '';
  position: absolute;
  top: 20px;
  right: 50%;
  left: -50%;
  height: 2px;
  background: var(--color-success);
  z-index: 0;
}

/* ============================
   Hardening: Edge-case resilience
   ============================ */

/* Admin toolbar: truncate long usernames */
.admin-toolbar-username {
  max-width: 20ch;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: inline-block;
  vertical-align: middle;
}

/* Grade text: prevent overflow from unexpected DB values */
.grade-text {
  overflow-wrap: break-word;
  word-break: break-word;
  max-width: 100%;
}

/* Hide empty ASP.NET validation summary (rendered even when valid) */
.validation-summary-valid {
  display: none;
}

/* Required field asterisk: screen-reader accessible */
.required-star {
  color: var(--color-accent-red);
  font-weight: 700;
}

/* Session warning extend button: ensure adequate touch target */
#extendSessionBtn {
  min-height: 44px;
  min-width: 44px;
}

/* Mobile hardening: adequate touch targets for all toolbar buttons */
@media (max-width: 575.98px) {
  .admin-toolbar-nav .btn,
  .admin-toolbar-user .btn {
    min-height: 44px;
  }
}

/* Reduced motion: disable animations for users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
  .btn-primary,
  .btn-success,
  .floating-feedback,
  .gear-meter,
  .card {
    transition: none;
  }

  .btn-primary:hover,
  .btn-success:hover {
    transform: none;
  }

  .gear-meter.gear-achieved {
    transform: none;
  }

  .results-hero,
  .results-gear-row .gear-meter,
  .results-score-reveal,
  .results-grade-reveal,
  .btn-certificate,
  .form-check-input:checked,
  .floating-feedback[style*="display: block"],
  .floating-feedback.is-visible,
  .question-item.animate-in,
  .alert.fade.show,
  .gear-meter.gear-just-achieved,
  .gear-meter.gear-just-achieved::after {
    animation: none;
  }
}