/* ============================================================
   DhanGenie — app.css
   Base reset, typography, layout primitives.
   Depends on: tokens.css (must load first)
   ============================================================ */

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  font-family: var(--dg-font-sans);
  font-size: 16px;
  color: var(--dg-text);
  background: var(--dg-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}
body { min-height: 100vh; overflow-x: hidden; }
img, svg, video { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }
input, textarea, select { font: inherit; color: inherit; }
ul, ol { list-style: none; }
table { border-collapse: collapse; }
h1, h2, h3, h4, h5, h6 { font-weight: var(--dg-font-weight-semibold); line-height: var(--dg-line-height-tight); color: var(--dg-text); }

/* ---- Scrollbar ---- */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--dg-border); border-radius: var(--dg-radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--dg-text-muted); }

/* ---- Selection ---- */
::selection { background: var(--dg-primary-100); color: var(--dg-primary-900); }
[data-theme="dark"] ::selection { background: rgba(59,130,246,0.3); color: var(--dg-text); }

/* ---- Focus Ring ---- */
:focus-visible {
  outline: 2px solid var(--dg-brand-primary);
  outline-offset: 2px;
  border-radius: var(--dg-radius-sm);
}

/* ============================================================
   Layout Shell
   ============================================================ */
.dg-layout {
  display: flex;
  min-height: 100vh;
}

/* ============================================================
   Sidebar
   ============================================================ */
.dg-sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--dg-sidebar-width);
  background: var(--dg-sidebar-bg);
  border-right: 1px solid var(--dg-sidebar-border);
  display: flex;
  flex-direction: column;
  z-index: var(--dg-z-sidebar);
  transition: width var(--dg-duration-slow) var(--dg-ease-default),
              transform var(--dg-duration-slow) var(--dg-ease-default);
  overflow: hidden;
}
.dg-sidebar.is-collapsed { width: var(--dg-sidebar-collapsed); }
.dg-sidebar.is-collapsed .dg-sidebar-label { opacity: 0; width: 0; overflow: hidden; white-space: nowrap; }

/* ---- Sidebar: Logo Area ---- */
.dg-sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--dg-space-3);
  padding: var(--dg-space-4) var(--dg-space-4);
  height: var(--dg-topbar-height);
  border-bottom: 1px solid var(--dg-sidebar-border);
  flex-shrink: 0;
}
.dg-sidebar-logo-mark {
  width: 28px; height: 28px;
  background: var(--dg-brand-primary);
  border-radius: var(--dg-radius-md);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: var(--dg-font-size-xs);
  font-weight: var(--dg-font-weight-bold);
  color: var(--dg-brand-on);
  letter-spacing: var(--dg-letter-spacing-tight);
}
.dg-sidebar-logo-text {
  font-size: var(--dg-font-size-md);
  font-weight: var(--dg-font-weight-semibold);
  color: var(--dg-sidebar-text-active);
  transition: opacity var(--dg-duration-base), width var(--dg-duration-base);
  white-space: nowrap;
}

/* ---- Sidebar: Nav ---- */
.dg-sidebar-nav { flex: 1; overflow-y: auto; overflow-x: hidden; padding: var(--dg-space-2) var(--dg-space-3); }
.dg-sidebar-section { margin-bottom: var(--dg-space-4); }
.dg-sidebar-section-label {
  font-size: var(--dg-font-size-xs);
  font-weight: var(--dg-font-weight-semibold);
  color: var(--dg-sidebar-text);
  text-transform: uppercase;
  letter-spacing: var(--dg-letter-spacing-widest);
  padding: var(--dg-space-2) var(--dg-space-3) var(--dg-space-1);
  opacity: 0.5;
  white-space: nowrap;
  overflow: hidden;
  transition: opacity var(--dg-duration-base);
}
.dg-sidebar.is-collapsed .dg-sidebar-section-label { opacity: 0; height: 0; padding: 0; margin: 0; }

.dg-nav-item {
  display: flex;
  align-items: center;
  gap: var(--dg-space-3);
  padding: var(--dg-space-2) var(--dg-space-3);
  border-radius: var(--dg-radius-md);
  font-size: var(--dg-font-size-base);
  font-weight: var(--dg-font-weight-medium);
  color: var(--dg-sidebar-text);
  cursor: pointer;
  transition: background var(--dg-duration-fast), color var(--dg-duration-fast);
  position: relative;
  white-space: nowrap;
  text-decoration: none;
  min-height: 34px;
}
.dg-nav-item svg { width: 16px; height: 16px; flex-shrink: 0; }
.dg-nav-item:hover { background: var(--dg-sidebar-hover); color: var(--dg-sidebar-text-active); }
.dg-nav-item.is-active {
  background: var(--dg-sidebar-active);
  color: var(--dg-sidebar-text-active);
}
.dg-nav-item.is-active::before {
  content: '';
  position: absolute;
  left: -var(--dg-space-3);
  top: 50%; transform: translateY(-50%);
  width: 3px; height: 60%;
  background: var(--dg-sidebar-active-border);
  border-radius: var(--dg-radius-full);
}
.dg-nav-badge {
  margin-left: auto;
  font-size: var(--dg-font-size-xs);
  font-weight: var(--dg-font-weight-semibold);
  background: var(--dg-primary-500);
  color: white;
  padding: 1px 6px;
  border-radius: var(--dg-radius-full);
  min-width: 18px;
  text-align: center;
}
.dg-nav-divider {
  height: 1px;
  background: var(--dg-sidebar-border);
  margin: var(--dg-space-2) 0;
}

/* ---- Sidebar: Footer ---- */
.dg-sidebar-footer {
  padding: var(--dg-space-3);
  border-top: 1px solid var(--dg-sidebar-border);
  flex-shrink: 0;
}

/* ============================================================
   Main Area
   ============================================================ */
.dg-main {
  margin-left: var(--dg-sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  transition: margin-left var(--dg-duration-slow) var(--dg-ease-default);
}
.dg-sidebar.is-collapsed ~ .dg-main { margin-left: var(--dg-sidebar-collapsed); }

/* ============================================================
   Topbar
   ============================================================ */
.dg-topbar {
  position: sticky;
  top: 0;
  height: var(--dg-topbar-height);
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border-bottom: 1px solid var(--dg-border-subtle);
  display: flex;
  align-items: center;
  padding: 0 var(--dg-space-6);
  gap: var(--dg-space-3);
  z-index: var(--dg-z-topbar);
  flex-shrink: 0;
}
[data-theme="dark"] .dg-topbar {
  background: rgba(9,9,11,0.85);
}

/* ============================================================
   Page Content
   ============================================================ */
.dg-content {
  flex: 1;
  padding: var(--dg-space-6);
  max-width: var(--dg-content-max-width);
  width: 100%;
  margin: 0 auto;
}
.dg-page-header {
  margin-bottom: var(--dg-space-6);
}
.dg-page-title {
  font-size: var(--dg-font-size-3xl);
  font-weight: var(--dg-font-weight-bold);
  letter-spacing: var(--dg-letter-spacing-tight);
  color: var(--dg-text);
}
.dg-page-subtitle {
  font-size: var(--dg-font-size-md);
  color: var(--dg-text-secondary);
  margin-top: var(--dg-space-1);
  line-height: var(--dg-line-height-normal);
}

/* ============================================================
   Mobile Overlay Backdrop
   ============================================================ */
.dg-mobile-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  z-index: calc(var(--dg-z-sidebar) - 1);
}
.dg-mobile-backdrop.is-visible { display: block; }

/* ============================================================
   Typography Helpers
   ============================================================ */
.dg-text-xs     { font-size: var(--dg-font-size-xs); }
.dg-text-sm     { font-size: var(--dg-font-size-sm); }
.dg-text-base   { font-size: var(--dg-font-size-base); }
.dg-text-md     { font-size: var(--dg-font-size-md); }
.dg-text-lg     { font-size: var(--dg-font-size-lg); }
.dg-text-xl     { font-size: var(--dg-font-size-xl); }
.dg-text-2xl    { font-size: var(--dg-font-size-2xl); }
.dg-text-3xl    { font-size: var(--dg-font-size-3xl); }

.dg-font-medium   { font-weight: var(--dg-font-weight-medium); }
.dg-font-semibold { font-weight: var(--dg-font-weight-semibold); }
.dg-font-bold     { font-weight: var(--dg-font-weight-bold); }
.dg-font-mono     { font-family: var(--dg-font-mono); }

.dg-text-primary   { color: var(--dg-text); }
.dg-text-secondary { color: var(--dg-text-secondary); }
.dg-text-muted     { color: var(--dg-text-muted); }
.dg-text-brand     { color: var(--dg-brand-primary); }
.dg-text-success   { color: var(--dg-emerald-600); }
.dg-text-warning   { color: var(--dg-gold-600); }
.dg-text-danger    { color: var(--dg-danger-600); }
[data-theme="dark"] .dg-text-success { color: var(--dg-emerald-400); }
[data-theme="dark"] .dg-text-warning { color: var(--dg-gold-400); }
[data-theme="dark"] .dg-text-danger  { color: #f87171; }

.dg-uppercase { text-transform: uppercase; }
.dg-tracking-wide   { letter-spacing: var(--dg-letter-spacing-wide); }
.dg-tracking-wider  { letter-spacing: var(--dg-letter-spacing-wider); }
.dg-tracking-widest { letter-spacing: var(--dg-letter-spacing-widest); }
.dg-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ============================================================
   Utility
   ============================================================ */
.dg-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; }
.dg-flex     { display: flex; }
.dg-flex-col { display: flex; flex-direction: column; }
.dg-items-center { align-items: center; }
.dg-justify-between { justify-content: space-between; }
.dg-gap-1 { gap: var(--dg-space-1); }
.dg-gap-2 { gap: var(--dg-space-2); }
.dg-gap-3 { gap: var(--dg-space-3); }
.dg-gap-4 { gap: var(--dg-space-4); }
.dg-gap-6 { gap: var(--dg-space-6); }
.dg-w-full { width: 100%; }
.dg-h-full { height: 100%; }
.dg-flex-1 { flex: 1; }
.dg-relative { position: relative; }
.dg-hidden { display: none !important; }
.dg-overflow-hidden { overflow: hidden; }

/* ---- Grid Helpers ---- */
.dg-grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--dg-space-4); }
.dg-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--dg-space-4); }
.dg-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--dg-space-4); }
.dg-grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: var(--dg-space-4); }