/**
 * Base Styles - NodeSelf/UseSelf Platform
 */

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

/* Base */
html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  min-height: 100vh;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-md); }

p {
  margin-bottom: var(--spacing-md);
}

a {
  color: var(--text-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* Lists */
ul, ol {
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

/* Code */
code, pre {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
}

code {
  background-color: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

pre {
  background-color: var(--bg-tertiary);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  overflow-x: auto;
}

/* Focus States */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-neutral-400);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-neutral-500);
}

/* Selection */
::selection {
  background-color: var(--color-primary);
  color: var(--text-inverse);
}

/* Layout Utilities */
.container {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

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

/* App Layout */
#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.app-layout {
  display: flex;
  min-height: 100vh;
}

.app-sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background: var(--bg-primary);
  border-right: 1px solid var(--border-light);
}

.app-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.app-topbar {
  height: var(--topbar-height);
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-lg);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.app-content {
  flex: 1;
  padding: var(--spacing-lg);
  overflow-y: auto;
}

/* Status Badge Utility */
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  display: inline-block;
}

.status-dot--online { background-color: var(--status-online); }
.status-dot--warning { background-color: var(--status-warning); }
.status-dot--offline { background-color: var(--status-offline); }
.status-dot--pending { background-color: var(--status-pending); }
.status-dot--syncing {
  background-color: var(--status-syncing);
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* Loading States */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-tertiary) 25%,
    var(--bg-secondary) 50%,
    var(--bg-tertiary) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-md);
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* No Scrollbar Utility (for horizontal scroll sections) */
.no-scrollbar {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.no-scrollbar::-webkit-scrollbar {
  display: none;
}

/* ============================================
   MOBILE RESPONSIVE STYLES
   ============================================ */

/* Prevent horizontal overflow on all pages */
html, body {
  overflow-x: hidden;
  max-width: 100vw;
}

#app {
  overflow-x: hidden;
}

/* Tablet breakpoint (768px) */
@media (max-width: 768px) {
  /* Typography scaling */
  h1 { font-size: var(--font-size-2xl); }
  h2 { font-size: var(--font-size-xl); }
  h3 { font-size: var(--font-size-lg); }

  /* Container padding */
  .container {
    padding: 0 var(--spacing-sm);
  }

  /* App layout - stack vertically */
  .app-layout {
    flex-direction: column;
  }

  /* Hide sidebar by default on mobile */
  .app-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: var(--z-modal);
    transform: translateX(-100%);
    transition: transform 0.3s ease;
  }

  .app-sidebar.sidebar-open {
    transform: translateX(0);
  }

  /* Sidebar overlay */
  .app-sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: calc(var(--z-modal) - 1);
  }

  .app-sidebar-overlay.sidebar-open {
    display: block;
  }

  /* Topbar adjustments */
  .app-topbar {
    padding: 0 var(--spacing-sm);
    height: 56px;
  }

  /* Content adjustments */
  .app-content {
    padding: var(--spacing-md);
  }
}

/* Mobile breakpoint (480px) */
@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  h1 { font-size: var(--font-size-xl); }
  h2 { font-size: var(--font-size-lg); }
  h3 { font-size: var(--font-size-md); }

  .container {
    padding: 0 var(--spacing-xs);
  }

  .app-content {
    padding: var(--spacing-sm);
  }

  /* Ensure inputs don't cause overflow */
  input, select, textarea, button {
    max-width: 100%;
  }
}

/* Utility classes for mobile visibility */
.hide-mobile {
  display: block;
}

.show-mobile {
  display: none;
}

@media (max-width: 768px) {
  .hide-mobile {
    display: none !important;
  }

  .show-mobile {
    display: block !important;
  }
}