/* ============================================
   TaskFlow Base Styles — Premium Aurora Edition
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&display=swap');

/* ---- Aurora Background ---- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% 20%, rgba(139, 92, 246, 0.07) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(236, 72, 153, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 50% 60% at 60% 10%, rgba(6, 182, 212, 0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

[data-theme="light"] body::before {
  background:
    radial-gradient(ellipse 80% 50% at 20% 20%, rgba(124, 58, 237, 0.04) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 80%, rgba(219, 39, 119, 0.03) 0%, transparent 60%),
    radial-gradient(ellipse 50% 60% at 60% 10%, rgba(8, 145, 178, 0.03) 0%, transparent 60%);
}

html {
  font-size: 16px;
  height: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-feature-settings: 'ss01', 'cv01';
  color: var(--text-primary);
  background: var(--bg-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background var(--transition-base), color var(--transition-base);
  overflow-x: hidden;
  position: relative;
}

/* ---- Typography ---- */
h1 { font-size: var(--text-4xl); letter-spacing: -0.03em; font-weight: 800; line-height: 1.1; }
h2 { font-size: var(--text-3xl); letter-spacing: -0.02em; font-weight: 700; line-height: 1.2; }
h3 { font-size: var(--text-2xl); letter-spacing: -0.01em; font-weight: 700; }
h4 { font-size: var(--text-xl); font-weight: 600; }
h5 { font-size: var(--text-lg); font-weight: 600; }
h6 { font-size: var(--text-base); font-weight: 600; }

p { color: var(--text-secondary); }

small, .text-small { font-size: var(--text-sm); }
.text-xs    { font-size: var(--text-xs); }
.text-muted { color: var(--text-tertiary); }
.text-accent { color: var(--accent); }

.gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.gradient-text-3 {
  background: var(--accent-gradient-3);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mono { font-family: var(--font-mono); }

/* ---- Links ---- */
a {
  color: var(--accent);
  transition: color var(--transition-fast), opacity var(--transition-fast);
  text-decoration: none;
}
a:hover { opacity: 0.9; }

/* ---- Custom Scrollbar ---- */
::-webkit-scrollbar { width: var(--scrollbar-size); height: var(--scrollbar-size); }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: var(--radius-full);
}
::-webkit-scrollbar-thumb:hover { background: var(--scrollbar-thumb-hover); }
* { scrollbar-width: thin; scrollbar-color: var(--scrollbar-thumb) var(--scrollbar-track); }

.scroll-container { overflow-y: auto; }
.scroll-container::-webkit-scrollbar-thumb { background: transparent; }
.scroll-container:hover::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); }

/* ---- Selection ---- */
::selection { background: var(--accent); color: #fff; }

/* ---- Focus Visible ---- */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ---- Utility Layout ---- */
.flex        { display: flex; }
.flex-col    { display: flex; flex-direction: column; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between{ display: flex; align-items: center; justify-content: space-between; }
.flex-wrap   { flex-wrap: wrap; }
.gap-xs { gap: var(--space-xs); } .gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); } .gap-lg { gap: var(--space-lg); }
.grid        { display: grid; }
.relative    { position: relative; }
.absolute    { position: absolute; }
.fixed       { position: fixed; }
.overflow-hidden { overflow: hidden; }
.w-full      { width: 100%; }
.h-full      { height: 100%; }
.min-h-screen { min-height: 100vh; }

/* ---- Text Utils ---- */
.truncate    { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.text-center { text-align: center; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold   { font-weight: 700; }
.font-extrabold { font-weight: 800; }

/* ---- Visibility ---- */
.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;
}
.hidden { display: none !important; }
.visible { visibility: visible; }
.invisible { visibility: hidden; }

/* ---- Cards & Glass ---- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  transition: all var(--transition-base);
}
.card:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow), var(--shadow-md);
  transform: translateY(-2px);
}

.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
}

.gradient-border {
  position: relative;
}
.gradient-border::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: var(--accent-gradient);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-base);
}
.gradient-border:hover::before,
.gradient-border:focus-within::before { opacity: 1; }

/* ---- Badges ---- */
.badge {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 2px 9px; border-radius: var(--radius-full);
  font-size: var(--text-xs); font-weight: 600;
  line-height: 1.5;
}
.badge-accent    { background: var(--accent-light); color: var(--accent); }
.badge-success   { background: var(--success-bg); color: var(--success); }
.badge-warning   { background: var(--warning-bg); color: var(--warning); }
.badge-error     { background: var(--error-bg); color: var(--error); }
.badge-info      { background: var(--info-bg); color: var(--info); }
.badge-gradient  {
  background: var(--accent-gradient); color: #fff;
  padding: 2px 10px;
}

/* ---- Priority Dots ---- */
.priority-dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
  box-shadow: 0 0 6px currentColor;
}
.priority-critical { color: var(--priority-critical); background: var(--priority-critical); }
.priority-high     { color: var(--priority-high); background: var(--priority-high); }
.priority-medium   { color: var(--priority-medium); background: var(--priority-medium); }
.priority-low      { color: var(--priority-low); background: var(--priority-low); }

/* ---- Divider ---- */
.divider {
  height: 1px; background: var(--border-primary); margin: var(--space-md) 0;
}
.divider-gradient {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.4;
  margin: var(--space-md) 0;
}

/* ---- Skeleton Loader ---- */
.skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-tertiary) 25%,
    var(--bg-elevated) 37%,
    var(--bg-tertiary) 63%
  );
  background-size: 400% 100%;
  animation: shimmer 1.4s ease infinite;
  border-radius: var(--radius-md);
}

/* ---- Tooltip ---- */
[data-tooltip] { position: relative; cursor: default; }
[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%; transform: translateX(-50%);
  padding: 6px 10px;
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-size: var(--text-xs);
  font-weight: 500;
  white-space: nowrap;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-primary);
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  z-index: var(--z-dropdown);
}
[data-tooltip]:hover::after { opacity: 1; }

/* ---- Avatar ---- */
.avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: var(--accent-gradient);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: var(--text-sm); color: #fff;
  flex-shrink: 0;
  box-shadow: 0 0 0 2px var(--bg-card), 0 0 12px var(--accent-glow);
}
.avatar-sm { width: 28px; height: 28px; font-size: var(--text-xs); }
.avatar-lg { width: 48px; height: 48px; font-size: var(--text-base); }

/* ---- Glow Chip ---- */
.glow-chip {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 5px 14px;
  background: var(--accent-gradient-soft);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--accent);
  transition: all var(--transition-fast);
}
.glow-chip:hover {
  box-shadow: 0 0 12px var(--accent-glow);
  border-color: var(--accent);
}

/* ---- Spinners ---- */
.spinner {
  width: 20px; height: 20px;
  border: 2px solid var(--border-primary);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  display: inline-block;
}
.spinner-sm { width: 14px; height: 14px; border-width: 2px; }
.spinner-lg { width: 32px; height: 32px; border-width: 3px; }

/* ---- Status Indicator ---- */
.status-dot {
  width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0;
}
.status-online  { background: var(--success); box-shadow: 0 0 6px var(--success); }
.status-away    { background: var(--warning); box-shadow: 0 0 6px var(--warning); }
.status-offline { background: var(--text-tertiary); }

/* ---- Misc ---- */
.pointer { cursor: pointer; }
.select-none { user-select: none; }
.no-shrink { flex-shrink: 0; }

/* ---- Icon Sizing ---- */
.icon    { width: 20px; height: 20px; flex-shrink: 0; display: inline-block; }
.icon-xs { width: 14px; height: 14px; flex-shrink: 0; display: inline-block; }
.icon-sm { width: 16px; height: 16px; flex-shrink: 0; display: inline-block; }
.icon-lg { width: 24px; height: 24px; flex-shrink: 0; display: inline-block; }
.icon-xl { width: 32px; height: 32px; flex-shrink: 0; display: inline-block; }
svg.icon, svg.icon-xs, svg.icon-sm, svg.icon-lg, svg.icon-xl { color: currentColor; }