:root {
  --font-primary: 'Nunito', system-ui, sans-serif;
  --font-secondary: 'Lora', serif;
  --accent-color: hsl(182 40% 28%);
  --accent-hover: hsl(182 40% 22%);
  --accent-active: hsl(182 40% 18%);
  --foreground-color: hsl(210 24% 14%);
  --foreground-muted: hsl(210 14% 30%);
  --background-color: hsl(30 28% 96%);
  --surface-color: hsl(0 0% 100%);
  --print-surface-muted: hsl(0 0% 96%);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 3px 4px 6px rgba(0, 0, 0, 0.35);
  --transition-duration: 0.2s;
  --transition-easing: ease;
}

[data-theme="dark"] {
  --accent-color: hsl(175 20% 55%);
  --accent-hover: hsl(175 20% 62%);
  --accent-active: hsl(175 20% 70%);
  --foreground-color: hsl(210 24% 90%);
  --foreground-muted: hsl(210 14% 60%);
  --background-color: hsl(215 18% 12%);
  --surface-color: hsl(215 16% 16%);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 3px 4px 6px rgba(0, 0, 0, 0.6);
}

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

::selection {
  background-color: var(--accent-color);
  color: var(--surface-color);
}

a:focus,
button:focus {
  outline: none;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

body {
  margin: 0;
  font-family: var(--font-primary);
  background-color: var(--background-color);
  color: var(--foreground-color);
  overflow-x: hidden;
}

main {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 1rem 7rem;
  text-align: center;
}

@supports (min-height: 100dvh) {
  main {
    min-height: 100dvh;
  }
}

.title {
  margin-bottom: 0.5rem;
  font-family: var(--font-secondary);
  font-size: clamp(3rem, 6.5vw, 4rem);
  font-weight: 600;
  text-transform: uppercase;
  color: var(--accent-color);
}

.title .accent {
  font-weight: 700;
  color: var(--foreground-color);
}

.subtitle {
  margin-top: 0;
  margin-bottom: 3rem;
  font-size: clamp(0.95rem, 1.6vw, 1.15rem);
  font-weight: 600;
  font-style: italic;
  color: var(--foreground-muted);
}

.theme-toggle {
  position: absolute;
  top: max(1.5rem, env(safe-area-inset-top) + 0.5rem);
  right: max(1.5rem, env(safe-area-inset-right) + 0.5rem);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  padding: 0;
  border: none;
  border-radius: 0.5rem;
  background-color: var(--surface-color);
  color: var(--accent-color);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: background-color var(--transition-duration) var(--transition-easing),
              color var(--transition-duration) var(--transition-easing),
              transform var(--transition-duration) var(--transition-easing),
              box-shadow var(--transition-duration) var(--transition-easing);
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  background-color: var(--accent-color);
  color: var(--surface-color);
  transform: scale(1.05);
  box-shadow: var(--shadow-md);
}

.theme-toggle:active {
  transform: scale(0.95);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  position: absolute;
  transition: opacity 0.3s var(--transition-easing), transform 0.3s var(--transition-easing);
}

.theme-toggle .icon-sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.8);
}

.theme-toggle .icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

[data-theme="dark"] .theme-toggle .icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

[data-theme="dark"] .theme-toggle .icon-moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.8);
}

.advice-card {
  margin: 2rem auto 0;
  width: min(90vw, 32rem);
}

.advice {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  min-height: 10rem;
  padding: 2rem 2.5rem;
  border-radius: 1rem;
  font-family: var(--font-secondary);
  font-size: clamp(1.35rem, 3.5vw, 1.9rem);
  font-style: italic;
  font-weight: 600;
  line-height: 1.6;
  text-align: center;
  background-color: var(--surface-color);
}

.advice::before,
.advice::after {
  position: absolute;
  font-size: 6rem;
  color: var(--foreground-muted);
}

.advice::before {
  content: open-quote;
  top: -3.25rem;
  left: -1rem;
}

.advice::after {
  content: close-quote;
  bottom: -6rem;
  right: -1rem;
}

.advice:has(.loading-state)::before,
.advice:has(.loading-state)::after {
  display: none;
}

.loading-state {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 1rem;
}

.loading-spinner {
  flex-shrink: 0;
  animation: spin 1s linear infinite;
  color: var(--accent-color);
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.advice-citation {
  margin-top: 1.5rem;
  padding-right: 1.5rem;
  width: 100%;
  font-family: var(--font-primary);
  font-size: 0.875rem;
  font-style: normal;
  font-weight: 600;
  text-align: right;
  color: var(--foreground-muted);
}

.advice-citation.hidden {
  visibility: hidden;
}

.advice-citation a {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  border-bottom: 1px solid transparent;
  text-decoration: none;
  color: var(--accent-color);
  transition: border-color var(--transition-duration) var(--transition-easing);
}

.advice-citation a .icon-external {
  flex-shrink: 0;
}

.advice-citation a:hover,
.advice-citation a:focus-visible {
  border-bottom-color: var(--accent-color);
}

footer {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  padding: 1.5rem 1.5rem max(1.5rem, env(safe-area-inset-bottom));
}

footer a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--accent-color);
  transition: color var(--transition-duration) var(--transition-easing), transform var(--transition-duration) var(--transition-easing);
}

footer a:hover,
footer a:focus-visible {
  color: var(--foreground-color);
  transform: translateY(-2px);
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2rem;
  padding: 0.625rem 2rem;
  border: none;
  border-radius: 0.5rem;
  font-family: var(--font-primary);
  font-size: 1rem;
  font-weight: 600;
  color: var(--surface-color);
  background-color: var(--accent-color);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: background-color var(--transition-duration) var(--transition-easing), box-shadow var(--transition-duration) var(--transition-easing);
}

.cta-button .icon-refresh {
  transition: transform 0.3s var(--transition-easing);
}

.cta-button:not(:disabled):hover .icon-refresh,
.cta-button:not(:disabled):focus-visible .icon-refresh {
  transform: rotate(180deg);
}

.cta-button:not(:disabled):hover,
.cta-button:not(:disabled):focus-visible {
  background-color: var(--accent-hover);
  box-shadow: var(--shadow-md);
}

.cta-button:not(:disabled):active {
  background-color: var(--accent-active);
  box-shadow: var(--shadow-sm);
}

.cta-button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}