.app-shell { min-height: 100vh; display: block; }
.app-shell.sidebar-collapsed { --sidebar: 112px; }
.sidebar { position: fixed; z-index: 1200; left: 16px; top: 16px; bottom: 16px; width: calc(var(--sidebar) - 32px); height: auto; padding: 18px; border: 1px solid color-mix(in srgb, var(--secondary), var(--border) 78%); border-radius: 24px; background: color-mix(in srgb, var(--surface), transparent 4%); box-shadow: 0 8px 20px rgba(32, 44, 39, .06); backdrop-filter: blur(18px); display: flex; flex-direction: column; gap: 16px; overflow: hidden; }
.sidebar.is-collapsed .sidebar-top div, .sidebar.is-collapsed .nav-item { font-size: 0; }
.sidebar.is-collapsed .nav-item { justify-content: center; padding-inline: 0; }
.sidebar.is-collapsed .nav-group { border-color: transparent; background: transparent; }
.sidebar.is-collapsed .nav-group summary { justify-content: center; padding-inline: 0; font-size: 0; }
.sidebar.is-collapsed .nav-group summary::after { display: none; }
.sidebar-top { display: flex; align-items: center; gap: 12px; min-height: 46px; min-width: 0; }
.sidebar-top div { min-width: 0; }
.sidebar-top strong, .sidebar-top span { overflow-wrap: anywhere; }
.sidebar-top span { display: block; color: var(--text-muted); font-size: 13px; }
.brand-mark { width: 44px; height: 44px; border-radius: 13px; background: linear-gradient(135deg, var(--primary), var(--secondary) 58%, var(--secondary-strong)); color: #fff; display: grid; place-items: center; font-weight: 900; box-shadow: 0 7px 16px color-mix(in srgb, var(--secondary), transparent 82%); flex: 0 0 auto; }
.side-nav { flex: 1 1 auto; min-height: 0; display: grid; align-content: start; gap: 8px; overflow: auto; padding-right: 4px; scrollbar-gutter: stable; }
.side-nav::-webkit-scrollbar { width: 8px; }
.side-nav::-webkit-scrollbar-thumb { background: color-mix(in srgb, var(--secondary), var(--border) 55%); border-radius: 999px; }
.nav-item, .bottom-nav button { border: 0; color: var(--text-muted); background: transparent; }
.nav-item { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 12px; font-weight: 750; line-height: 1.18; text-align: left; overflow-wrap: anywhere; min-width: 0; }
.nav-item:hover { background: color-mix(in srgb, var(--secondary), var(--surface-hover) 88%); color: var(--secondary-strong); }
.nav-item.is-active { background: linear-gradient(90deg, color-mix(in srgb, var(--secondary), var(--surface) 80%), color-mix(in srgb, var(--secondary), var(--surface) 93%)); color: var(--secondary-strong); box-shadow: inset 4px 0 0 var(--secondary), 0 5px 12px color-mix(in srgb, var(--secondary), transparent 92%); }
.nav-item.is-active svg { color: var(--secondary); }
.nav-group { border: 1px solid color-mix(in srgb, var(--secondary), var(--border) 82%); border-radius: 16px; background: color-mix(in srgb, var(--surface), transparent 30%); overflow: hidden; }
.nav-group summary { min-height: 48px; display: flex; align-items: center; gap: 11px; padding: 10px 14px; color: var(--text); font-weight: 900; line-height: 1.15; list-style: none; cursor: pointer; user-select: none; overflow-wrap: anywhere; }
.nav-group[open] { border-color: color-mix(in srgb, var(--secondary), var(--border) 48%); background: color-mix(in srgb, var(--secondary), var(--surface) 95%); }
.nav-group[open] summary { color: var(--secondary-strong); }
.nav-group summary::-webkit-details-marker { display: none; }
.nav-group summary::after { content: ""; width: 8px; height: 8px; margin-left: auto; border-right: 2px solid currentColor; border-bottom: 2px solid currentColor; transform: rotate(45deg); opacity: .55; transition: transform var(--duration); }
.nav-group[open] summary::after { transform: rotate(225deg); }
.nav-group .nav-item { margin: 0 8px 8px; width: calc(100% - 16px); min-height: 40px; padding: 9px 11px; font-size: 14px; }
.main-area { min-width: 0; width: min(calc(100% - var(--sidebar)), 1680px); margin-left: var(--sidebar); padding: 24px clamp(20px, 2.4vw, 42px) 96px; }
.app-header { min-height: var(--header); display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 18px; }
.app-header > div:first-child { min-width: 0; }
.app-header h1 { margin: 0; font-size: clamp(28px, 4vw, 42px); line-height: 1; letter-spacing: 0; }
.header-actions { display: flex; align-items: center; justify-content: flex-end; gap: 10px; min-width: 0; }
.view { display: grid; gap: 22px; }
.bottom-nav { display: none; }
.login-screen { min-height: 100vh; min-height: 100dvh; display: grid; place-items: center; padding: max(18px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) max(18px, env(safe-area-inset-bottom)) max(18px, env(safe-area-inset-left)); background: linear-gradient(135deg, color-mix(in srgb, var(--primary), transparent 91%), transparent 42%), var(--bg); }
.login-panel { position: relative; width: min(470px, 100%); padding: 32px; background: color-mix(in srgb, var(--surface), transparent 2%); border: 1px solid color-mix(in srgb, var(--border), white 22%); border-radius: 28px; box-shadow: var(--shadow); overflow: hidden; }
.login-panel::before { content: ""; position: absolute; inset: 0 0 auto; height: 5px; background: var(--primary); }
.login-brand-row { display: flex; align-items: center; gap: 16px; margin-bottom: 18px; min-width: 0; }
.login-brand { width: 64px; height: 64px; border-radius: 19px; font-size: 20px; letter-spacing: .02em; box-shadow: 0 9px 20px color-mix(in srgb, var(--primary), transparent 82%); }
.login-panel .eyebrow { margin: 0 0 5px; }
.login-panel h1 { margin: 0; font-size: clamp(31px, 7vw, 42px); line-height: 1.02; overflow-wrap: anywhere; }
.login-copy { margin: 0 0 24px; max-width: 34rem; color: var(--text-muted); font-size: 15px; font-weight: 750; line-height: 1.45; }
.login-panel form { gap: 13px; }
.login-panel input { min-height: 50px; border-radius: 15px; background: color-mix(in srgb, var(--surface), var(--surface-hover) 34%); }
.login-submit { width: 100%; min-height: 50px; margin-top: 2px; border-radius: 15px; font-size: 16px; }