/* Copyright (c) 2025-2026 Spwig contributors. Licensed under AGPL-3.0. */

/** Frontend Base Styles - Resets, Accessibility, Toasts */

/* ============================================================
   Basic Reset (prevents layout shift)
   ============================================================ */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.5;
}

/* Prevent layout shift for images */
img,
video,
iframe {
  max-width: 100%;
  height: auto;
}

/* ============================================================
   Accessibility
   ============================================================ */

/* Skip Link for Accessibility */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--theme-space-4);
  padding: var(--theme-space-2) var(--theme-space-4);
  background-color: var(--theme-color-primary);
  color: var(--theme-color-text-inverse);
  border-radius: var(--theme-radius-md);
  text-decoration: none;
  font-weight: var(--theme-font-weight-medium);
  z-index: var(--theme-z-tooltip);
  transition: top var(--theme-transition-duration-fast) var(--theme-transition-easing-default);
}

.skip-link:focus {
  top: var(--theme-space-4);
}

/* 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: 0;
}

.sr-only:focus {
  position: static;
  width: auto;
  height: auto;
  padding: var(--theme-space-2);
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* Utility: hidden */
.hidden {
  display: none;
}

/* ============================================================
   Toast Notifications
   ============================================================ */
.toast {
  position: fixed;
  top: var(--theme-space-4);
  right: var(--theme-space-4);
  padding: var(--theme-space-4);
  border-radius: var(--theme-radius-lg);
  box-shadow: var(--theme-shadow-lg);
  z-index: var(--theme-z-tooltip);
  color: var(--theme-color-text-inverse);
  font-weight: var(--theme-font-weight-medium);
  opacity: 0;
  transform: translateX(100%);
  transition:
    opacity var(--theme-transition-duration-base) var(--theme-transition-easing-default),
    transform var(--theme-transition-duration-base) var(--theme-transition-easing-default);
}

.toast--visible {
  opacity: 1;
  transform: translateX(0);
}

.toast--success {
  background-color: var(--theme-color-success);
}

.toast--error {
  background-color: var(--theme-color-error);
}

.toast--warning {
  background-color: var(--theme-color-warning);
  color: var(--theme-color-text);
}

.toast--info {
  background-color: var(--theme-color-info);
}