/* MAP
 * §1 reset and base L5-L35
 * §2 login layout L37-L91
 * §3 application shell L93-L167
 * §4 responsive L169-L217
 */

/* §1 reset and base */
*, *::before, *::after { box-sizing: border-box; }
html { min-width: 320px; background: var(--bg); }
body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
a { color: inherit; text-decoration: none; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 8px; font-size: clamp(28px, 4vw, 36px); line-height: 1.15; letter-spacing: -.035em; }
h2 { margin-bottom: 8px; font-size: 20px; line-height: 1.25; letter-spacing: -.02em; }
p { color: var(--text-2); }
.icon-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }

/* §2 login layout */
.login-page {
  display: grid;
  grid-template-rows: 1fr auto;
  background:
    radial-gradient(circle at 18% 20%, var(--accent-soft), transparent 35%),
    var(--bg);
}
.login-shell {
  width: min(1040px, calc(100% - 48px));
  margin: auto;
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  border: 2px solid var(--border);
  border-radius: 18px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.login-brand {
  min-height: 520px;
  padding: 64px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  background: var(--band);
  color: var(--on-band);
}
.login-brand h1 { font-size: clamp(38px, 5vw, 56px); }
.login-brand p { max-width: 480px; color: var(--sidebar-muted); font-size: 17px; }
.login-card { padding: 64px 48px; display: flex; flex-direction: column; justify-content: center; gap: 24px; }
.login-footer { padding: 20px; color: var(--text-3); text-align: center; font-size: 13px; }

/* §3 application shell */
.app-shell { min-height: 100dvh; display: grid; grid-template-columns: 264px minmax(0, 1fr); }
.sidebar {
  position: sticky;
  top: 0;
  height: 100dvh;
  display: flex;
  flex-direction: column;
  background: var(--sidebar);
  color: var(--sidebar-text);
  border-right: 1px solid var(--sidebar-2);
  z-index: 20;
}
.sidebar-brand { min-height: 80px; padding: 16px 20px; display: flex; align-items: center; gap: 12px; border-bottom: 1px solid var(--sidebar-2); }
.sidebar-brand div:last-child { min-width: 0; display: flex; flex-direction: column; }
.sidebar-brand strong { font-size: 15px; }
.sidebar-brand span { color: var(--sidebar-muted); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-nav { padding: 16px 12px; overflow-y: auto; flex: 1; }
.nav-group + .nav-group { margin-top: 20px; }
.nav-group h2 { margin: 0 12px 8px; color: var(--sidebar-muted); font-size: 10px; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; }
.sidebar-user { margin-top: auto; padding: 16px 20px; display: flex; align-items: center; gap: 12px; border-top: 1px solid var(--sidebar-2); }
.sidebar-user div:last-child { display: flex; flex-direction: column; }
.sidebar-user span { color: var(--sidebar-muted); font-size: 12px; text-transform: capitalize; }
.workspace { min-width: 0; min-height: 100dvh; display: grid; grid-template-rows: auto 1fr auto; }
.topbar { min-height: 72px; padding: 12px 32px; display: flex; align-items: center; gap: 16px; background: color-mix(in srgb, var(--surface) 94%, transparent); border-bottom: 2px solid var(--border); position: sticky; top: 0; z-index: 15; backdrop-filter: blur(14px); }
.breadcrumb { display: flex; align-items: center; gap: 10px; min-width: 0; }
.breadcrumb span { color: var(--text-3); }
.breadcrumb span::after { content: "/"; margin-left: 10px; color: var(--border-strong); }
.topbar-actions { margin-left: auto; display: flex; align-items: center; gap: 8px; }
.content { width: min(1320px, 100%); padding: 40px 32px 56px; }
.page-heading { margin-bottom: 32px; display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; }
.page-heading p:last-child { margin-bottom: 0; }
.app-footer { min-height: 56px; padding: 16px 32px; display: flex; justify-content: space-between; gap: 16px; color: var(--text-3); border-top: 1px solid var(--border); font-size: 12px; }
.mobile-menu { display: none; }

/* §4 responsive */
@media (max-width: 900px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; left: 0; width: 280px; transform: translateX(-101%); transition: transform 200ms ease; box-shadow: var(--shadow); }
  .sidebar.open { transform: translateX(0); }
  .mobile-menu { display: inline-grid; }
  .content { padding: 32px 20px 48px; }
  .topbar { padding: 12px 20px; }
  .app-footer { padding: 16px 20px; }
}
@media (max-width: 720px) {
  .login-shell { width: min(100% - 32px, 480px); grid-template-columns: 1fr; }
  .login-brand { min-height: auto; padding: 32px; }
  .login-brand h1 { font-size: 32px; }
  .login-card { padding: 32px; }
  .page-heading { align-items: flex-start; flex-direction: column; }
  .breadcrumb span { display: none; }
  .theme-button span { display: none; }
  .app-footer { flex-direction: column; gap: 4px; }
}