:root {
  --color-bg: #FAF7F2;
  --color-card: #FFFFFF;
  --color-text: #2C2A27;
  --color-text-muted: #8A8580;
  --color-accent: #C96A2B;
  --color-accent-hover: #A8541F;
  --color-accent-text: #FFFFFF;
  --color-shadow: rgba(44, 42, 39, 0.08);
  --color-border: #EDE8E1;

  --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --radius-card: 16px;
  --radius-button: 8px;

  --spacing-card-padding-v: 48px;
  --spacing-card-padding-h: 56px;
  --spacing-button-mt: 24px;
  --spacing-page-max-width: 640px;
}

@media (max-width: 767px) {
  :root {
    --spacing-card-padding-v: 32px;
    --spacing-card-padding-h: 24px;
  }
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.page {
  width: 100%;
  max-width: var(--spacing-page-max-width);
  padding: 40px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Header */
.site-header {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-text-muted);
  margin-bottom: 48px;
  text-align: center;
  width: 100%;
}

@media (max-width: 767px) {
  .site-header {
    font-size: 13px;
    margin-bottom: 32px;
    text-align: left;
  }
}

/* Main content */
.main-content {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* Joke card */
.joke-card {
  background-color: var(--color-card);
  border-radius: var(--radius-card);
  padding: var(--spacing-card-padding-v) var(--spacing-card-padding-h);
  box-shadow: 0 4px 24px var(--color-shadow);
  width: 100%;
  min-height: 180px;
  display: flex;
  align-items: center;
  opacity: 0;
}

.joke-card.loaded {
  opacity: 1;
  transition: opacity 300ms ease-in;
}

/* Joke text */
.joke-text {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 700;
  font-style: italic;
  line-height: 1.65;
  color: var(--color-text);
  transition: opacity 150ms ease-out;
  width: 100%;
}

.joke-text.fading {
  opacity: 0;
}

@media (max-width: 767px) {
  .joke-text {
    font-size: 22px;
  }
}

/* Button */
.btn-joke {
  background-color: var(--color-accent);
  color: var(--color-accent-text);
  border: none;
  border-radius: var(--radius-button);
  padding: 14px 40px;
  font-family: var(--font-sans);
  font-size: 15px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  margin-top: var(--spacing-button-mt);
  display: block;
  transition: background-color 180ms ease, transform 100ms ease;
  min-height: 48px;
}

.btn-joke:hover:not(:disabled) {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
}

.btn-joke:active:not(:disabled) {
  transform: translateY(0);
}

.btn-joke:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

@media (max-width: 767px) {
  .btn-joke {
    width: 100%;
    padding: 14px 0;
  }
}

/* Loading dot animation */
@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.2; }
}

.btn-joke .loading-dot {
  display: inline-block;
  animation: pulse-dot 900ms ease-in-out infinite;
  margin-left: 4px;
}

/* Footer */
.site-footer {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 400;
  color: var(--color-text-muted);
  text-align: center;
  margin-top: 40px;
  width: 100%;
}

@media (max-width: 767px) {
  .site-footer {
    margin-top: 32px;
  }
}