/**
 * Privacy-First Consent Manager - Styles
 * Lightweight, accessible, themeable
 *
 * @version 1.0.0
 */

/* ============================================
   CSS Variables for Easy Theming
   ============================================ */

:root {
  /* Light theme (default) */
  --consent-bg: #ffffff;
  --consent-text: #333333;
  --consent-border: #e0e0e0;
  --consent-shadow: rgba(0, 0, 0, 0.1);
  --consent-accent: #2563eb;
  --consent-accent-hover: #1d4ed8;
  --consent-link: #2563eb;
  --consent-link-hover: #1d4ed8;

  /* Spacing */
  --consent-padding: 1.25rem;
  --consent-gap: 1rem;
  --consent-border-radius: 0.5rem;

  /* Typography */
  --consent-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --consent-font-size-base: 0.9375rem;
  --consent-font-size-title: 1rem;
  --consent-line-height: 1.5;

  /* Animation */
  --consent-transition: all 0.3s ease;
  --consent-slide-distance: 1rem;

  /* Z-index */
  --consent-z-index: 9999;
}

/* Dark theme */
[data-theme="dark"] {
  --consent-bg: #1f2937;
  --consent-text: #f3f4f6;
  --consent-border: #374151;
  --consent-shadow: rgba(0, 0, 0, 0.3);
  --consent-accent: #3b82f6;
  --consent-accent-hover: #2563eb;
  --consent-link: #60a5fa;
  --consent-link-hover: #3b82f6;
}

/* Auto theme - follows system preference */
@media (prefers-color-scheme: dark) {
  [data-theme="auto"] {
    --consent-bg: #1f2937;
    --consent-text: #f3f4f6;
    --consent-border: #374151;
    --consent-shadow: rgba(0, 0, 0, 0.3);
    --consent-accent: #3b82f6;
    --consent-accent-hover: #2563eb;
    --consent-link: #60a5fa;
    --consent-link-hover: #3b82f6;
  }
}

/* ============================================
   Screen Reader Only
   ============================================ */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ============================================
   Banner Container
   ============================================ */

.consent-banner {
  position: fixed;
  left: 0;
  right: 0;
  z-index: var(--consent-z-index);

  /* Initial state - hidden */
  opacity: 0;
  transform: translateY(var(--consent-slide-distance));
  transition: var(--consent-transition);
  pointer-events: none;

  /* Styling */
  background: var(--consent-bg);
  color: var(--consent-text);
  border-top: 1px solid var(--consent-border);
  box-shadow: 0 -2px 16px var(--consent-shadow);

  font-family: var(--consent-font-family);
  font-size: var(--consent-font-size-base);
  line-height: var(--consent-line-height);
}

/* Bottom position (default) */
.consent-banner[data-position="bottom"] {
  bottom: 0;
  transform: translateY(var(--consent-slide-distance));
}

/* Top position */
.consent-banner[data-position="top"] {
  top: 0;
  bottom: auto;
  border-top: none;
  border-bottom: 1px solid var(--consent-border);
  transform: translateY(calc(-1 * var(--consent-slide-distance)));
}

/* Visible state */
.consent-banner--visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

/* ============================================
   Banner Layout
   ============================================ */

.consent-banner__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--consent-padding);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--consent-gap);
  flex-wrap: wrap;
}

.consent-banner__content {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  flex: 1 1 auto;
  min-width: 0; /* Allow text truncation */
}

.consent-banner__icon {
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
  user-select: none;
}

.consent-banner__text {
  flex: 1 1 auto;
  min-width: 0;
}

.consent-banner__title {
  display: block;
  font-weight: 600;
  font-size: var(--consent-font-size-title);
  margin: 0 0 0.25rem 0;
}

.consent-banner__message {
  margin: 0;
  color: var(--consent-text);
  opacity: 0.9;
}

/* ============================================
   Actions
   ============================================ */

.consent-banner__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.consent-banner__link {
  color: var(--consent-link);
  text-decoration: none;
  font-size: 0.875rem;
  padding: 0.5rem 0.75rem;
  border-radius: calc(var(--consent-border-radius) * 0.75);
  transition: var(--consent-transition);
  white-space: nowrap;
}

.consent-banner__link:hover,
.consent-banner__link:focus {
  color: var(--consent-link-hover);
  text-decoration: underline;
  outline: 2px solid var(--consent-accent);
  outline-offset: 2px;
}

.consent-banner__accept {
  background: var(--consent-accent);
  color: #ffffff;
  border: none;
  padding: 0.625rem 1.5rem;
  border-radius: var(--consent-border-radius);
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--consent-transition);
  white-space: nowrap;
  font-family: inherit;
}

.consent-banner__accept:hover,
.consent-banner__accept:focus {
  background: var(--consent-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
  outline: 2px solid var(--consent-accent);
  outline-offset: 2px;
}

.consent-banner__accept:active {
  transform: translateY(0);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 640px) {
  .consent-banner__container {
    flex-direction: column;
    align-items: stretch;
    padding: 1rem;
  }

  .consent-banner__content {
    flex-direction: column;
    gap: 0.5rem;
  }

  .consent-banner__icon {
    font-size: 1.25rem;
  }

  .consent-banner__title {
    font-size: 0.9375rem;
  }

  .consent-banner__message {
    font-size: 0.875rem;
  }

  .consent-banner__actions {
    flex-direction: column-reverse;
    width: 100%;
  }

  .consent-banner__link,
  .consent-banner__accept {
    width: 100%;
    text-align: center;
    justify-content: center;
  }

  .consent-banner__accept {
    padding: 0.75rem 1rem;
  }
}

@media (max-width: 480px) {
  .consent-banner__container {
    padding: 0.875rem;
  }

  .consent-banner__message {
    font-size: 0.8125rem;
  }
}

/* ============================================
   Reduced Motion
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  .consent-banner,
  .consent-banner__accept,
  .consent-banner__link {
    transition: none;
    animation: none;
  }

  .consent-banner {
    transform: none;
  }

  .consent-banner__accept:hover {
    transform: none;
  }
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
  .consent-banner {
    display: none !important;
  }
}

/* ============================================
   High Contrast Mode Support
   ============================================ */

@media (prefers-contrast: high) {
  .consent-banner {
    border-width: 2px;
  }

  .consent-banner__accept {
    border: 2px solid currentColor;
  }
}

/* ============================================
   Focus Visible (Modern Browsers)
   ============================================ */

.consent-banner__accept:focus:not(:focus-visible) {
  outline: none;
}

.consent-banner__link:focus:not(:focus-visible) {
  outline: none;
}