@import url("https://fonts.googleapis.com/css2?family=Baloo+2:wght@400;600&family=Nunito:wght@400;600;700&display=swap");

:root {
  --color-bg: #f5ffe6;
  --color-surface: #ffffff;
  --color-accent: #58cc02;
  --color-accent-light: #89e219;
  --color-accent-dark: #3b9901;
  --color-grey: #4b4b4b;
  --color-text: #2f2f2f;
  --color-muted: rgba(75, 75, 75, 0.7);
  --color-border: rgba(75, 75, 75, 0.18);
  --color-warning: #89e219;
  --shadow-soft: 0 16px 40px rgba(75, 75, 75, 0.18);
  --radius-large: 24px;
  --radius-medium: 16px;
  --radius-small: 12px;
  --transition: 200ms ease;
  font-size: 16px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Nunito", "Baloo 2", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  background:
    radial-gradient(circle at 20% 20%, rgba(137, 226, 25, 0.45) 0%, rgba(137, 226, 25, 0) 45%),
    radial-gradient(circle at 80% 10%, rgba(88, 204, 2, 0.35) 0%, rgba(88, 204, 2, 0) 50%),
    var(--color-bg);
  color: var(--color-text);
  display: flex;
  align-items: stretch;
  justify-content: center;
  padding: 32px clamp(16px, 4vw, 40px);
}

.no-script {
  margin: 0;
  padding: 12px 16px;
  background: rgba(137, 226, 25, 0.15);
  color: var(--color-text);
  border-radius: var(--radius-small);
  text-align: center;
}

.app {
  width: min(1200px, 100%);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.app-header {
  background: linear-gradient(135deg, rgba(88, 204, 2, 0.85), rgba(137, 226, 25, 0.85));
  border-radius: var(--radius-large);
  padding: 32px clamp(24px, 5vw, 48px);
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border: 3px solid rgba(88, 204, 2, 0.55);
  color: #ffffff;
}

.brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-mascot {
  width: 64px;
  height: 64px;
  filter: drop-shadow(0 6px 14px rgba(43, 43, 43, 0.25));
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.brand-name {
  font-family: "Baloo 2", "Nunito", cursive;
  font-size: 1.8rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand-tagline {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.85);
}

.tabs {
  display: inline-flex;
  background: rgba(255, 255, 255, 0.2);
  border-radius: 999px;
  padding: 6px;
  gap: 6px;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.3);
}

.tab-button {
  border: none;
  background: transparent;
  border-radius: 999px;
  padding: 10px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #ffffff;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}

.tab-button[aria-selected="true"] {
  background: #ffffff;
  box-shadow: 0 6px 18px rgba(43, 43, 43, 0.25);
  color: var(--color-accent-dark);
}

.tab-button:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.8);
  outline-offset: 2px;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 420px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius-large);
  box-shadow: var(--shadow-soft);
  padding: 28px clamp(24px, 5vw, 44px);
  display: flex;
  flex-direction: column;
  gap: 24px;
  border: 3px solid rgba(88, 204, 2, 0.35);
}

.card-title {
  margin: 0;
  font-size: 1.3rem;
  font-weight: 700;
}

.card-subsection {
  display: flex;
  justify-content: flex-start;
}

form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.field-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.field-row .field-group {
  flex: 1 1 220px;
}

.language-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.language-row select {
  flex: 1 1 auto;
}

.swap-button {
  border: 2px solid rgba(75, 75, 75, 0.2);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  color: var(--color-grey);
  font-weight: 700;
  font-size: 1rem;
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  box-shadow: 0 4px 12px rgba(43, 43, 43, 0.15);
}

.swap-button:hover:not(:disabled) {
  transform: translateY(-1px);
  background: rgba(137, 226, 25, 0.2);
}

.swap-button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.swap-button:focus-visible {
  outline: 3px solid rgba(88, 204, 2, 0.35);
  outline-offset: 3px;
}

.field-group.inline {
  align-items: flex-start;
}

label {
  font-weight: 600;
  font-size: 0.95rem;
}

input,
select {
  font: inherit;
  border-radius: var(--radius-small);
  border: 2px solid rgba(75, 75, 75, 0.18);
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.85);
  transition: border-color var(--transition), box-shadow var(--transition);
}

input:hover,
select:hover {
  border-color: var(--color-accent-dark);
  box-shadow: 0 0 0 3px rgba(88, 204, 2, 0.15);
}

select:disabled,
input:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

input:focus,
select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(137, 226, 25, 0.25);
  outline: none;
}

.field-hint {
  margin: 0;
  font-size: 0.8rem;
  color: var(--color-muted);
}

.tooltip-trigger {
  border: none;
  background: transparent;
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  line-height: 1;
  text-decoration: underline;
}

.tooltip {
  display: none;
  font-size: 0.8rem;
  background: var(--color-surface);
  border-radius: var(--radius-small);
  border: 1px solid var(--color-border);
  padding: 10px 12px;
  max-width: 300px;
  box-shadow: 0 10px 26px rgba(75, 75, 75, 0.2);
}

.tooltip[data-visible="true"] {
  display: block;
}

.tab-panel[hidden] {
  display: none;
}

.form-actions {
  margin-top: 16px;
  display: flex;
  gap: 12px;
  align-items: center;
  justify-content: flex-start;
}

.primary-button {
  border: none;
  border-radius: 999px;
  background: var(--color-accent);
  color: var(--color-surface);
  font-weight: 700;
  padding: 12px 24px;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  box-shadow: 0 10px 18px rgba(88, 204, 2, 0.35);
}

.secondary-button {
  border: 2px solid rgba(75, 75, 75, 0.25);
  border-radius: 999px;
  background: rgba(75, 75, 75, 0.12);
  color: var(--color-grey);
  font-weight: 700;
  padding: 12px 24px;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 6px 14px rgba(43, 43, 43, 0.15);
}

.secondary-button:hover {
  background: rgba(75, 75, 75, 0.2);
  transform: translateY(-2px);
}

.secondary-button:focus-visible {
  outline: 3px solid rgba(75, 75, 75, 0.4);
  outline-offset: 4px;
}

.primary-button:hover {
  background: var(--color-accent-light);
  color: var(--color-grey);
  transform: translateY(-2px);
}

.primary-button:focus-visible {
  outline: 3px solid rgba(88, 204, 2, 0.35);
  outline-offset: 4px;
}

.link-button {
  background: none;
  border: none;
  color: var(--color-accent);
  font-weight: 600;
  cursor: pointer;
  text-decoration: underline;
  padding: 0;
}

.results-summary {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.result-stats {
  margin: 16px 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
}

.stat {
  background: rgba(255, 255, 255, 0.85);
  border: 2px solid rgba(88, 204, 2, 0.25);
  border-radius: var(--radius-medium);
  padding: 12px;
  box-shadow: 0 8px 16px rgba(43, 43, 43, 0.12);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.stat-value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-grey);
}

.result-line {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 700;
}

.result-detail {
  margin: 0;
  font-size: 1rem;
  color: var(--color-text);
}

.result-meta {
  margin: 0;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.progress-area {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  font-weight: 600;
  font-size: 0.9rem;
  gap: 12px;
}

.progress-bar {
  height: 16px;
  background: rgba(137, 226, 25, 0.2);
  border-radius: 999px;
  overflow: hidden;
  border: 2px solid rgba(88, 204, 2, 0.3);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--color-accent-dark),
    var(--color-accent),
    var(--color-accent-light)
  );
  width: 0%;
  border-radius: inherit;
  transition: width 400ms ease;
}

.course-meta {
  font-size: 0.85rem;
  color: var(--color-muted);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.course-meta a {
  color: inherit;
  text-decoration: underline;
}

.card-note {
  margin-top: 20px;
  font-size: 0.8rem;
  color: var(--color-muted);
  text-align: right;
}

.card-note a {
  color: var(--color-accent-dark);
  font-weight: 700;
}

.debug-panel {
  background: rgba(137, 226, 25, 0.15);
  border-radius: var(--radius-medium);
  border: 1px dashed var(--color-border);
  padding: 16px;
  font-family: "SFMono-Regular", "Consolas", "Liberation Mono", monospace;
}

.debug-panel h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.debug-panel pre {
  margin: 0;
  font-size: 0.8rem;
  line-height: 1.4;
  overflow-x: auto;
}

.app-footer {
  background: linear-gradient(180deg, rgba(137, 226, 25, 0.05) 0%, rgba(137, 226, 25, 0) 100%);
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-muted);
  padding: 12px 16px 8px;
}

.app-footer a {
  color: var(--color-accent);
  font-weight: 600;
}

.toast-region {
  position: fixed;
  bottom: 24px;
  right: 24px;
  max-width: min(320px, 90vw);
  z-index: 100;
}

.toast {
  background: var(--color-surface);
  border: 2px solid rgba(88, 204, 2, 0.35);
  padding: 12px 16px;
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-soft);
  font-size: 0.9rem;
  color: var(--color-text);
  display: flex;
  gap: 8px;
  align-items: center;
  margin-top: 8px;
  opacity: 1;
  transform: translateY(0);
  transition: opacity var(--transition), transform var(--transition);
}

.toast::before {
  content: "•";
  font-size: 1.5rem;
  color: var(--color-warning);
}

.toast.hide {
  opacity: 0;
  transform: translateY(8px);
}

@media (max-width: 980px) {
  body {
    padding: 24px;
  }

  .layout {
    grid-template-columns: 1fr;
  }

  .app-header {
    align-items: stretch;
  }

  .progress-label {
    flex-direction: column;
    align-items: flex-start;
  }

  .field-row {
    flex-direction: column;
  }

  .form-actions {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}