/* ============================================
   MUHSEN CRM — Base styles
   ============================================ */

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

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  font-feature-settings: "ss01", "cv11", "cv02";
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--fw-display);
  color: var(--text-primary);
  letter-spacing: -0.015em;
  margin: 0;
  line-height: var(--lh-snug);
}

h1 { font-size: var(--fs-3xl); letter-spacing: -0.02em; }
h2 { font-size: var(--fs-2xl); letter-spacing: -0.018em; }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }
h5 { font-size: var(--fs-base); }

p { margin: 0; }

a {
  color: var(--text-link);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}
a:hover { color: var(--primary-hover); }

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
  padding: 0;
}

input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--neutral-200);
  border-radius: var(--radius-pill);
  border: 2px solid var(--bg-app);
}
::-webkit-scrollbar-thumb:hover { background: var(--neutral-300); }

/* Focus rings — visible, accessible */
:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[role="button"]:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}

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

/* 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;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 12px;
  background: var(--primary);
  color: var(--on-primary);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-weight: var(--fw-semibold);
  z-index: 1000;
  transition: top var(--dur-fast) var(--ease-out);
}
.skip-link:focus { top: 12px; }

/* Utility */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.flex-1 { flex: 1; }
.muted { color: var(--text-secondary); }
.subtle { color: var(--text-tertiary); }
.mono { font-family: var(--font-mono); font-feature-settings: "tnum" on; }
.tnum { font-variant-numeric: tabular-nums; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}