*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { font-size:16px; -webkit-text-size-adjust:100%; scroll-behavior:smooth; }
body {
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    min-height: 100vh;
    min-height: 100dvh;
}
h1,h2,h3,h4,h5,h6 { font-family:var(--font-display); font-weight:600; line-height:1.3; }
a { color:var(--color-primary); text-decoration:none; transition:color var(--transition-fast); }
a:hover { color:var(--color-primary-dark); }
input,select,textarea,button { font-family:var(--font-body); font-size:var(--text-base); }

/* LOADER */
.app-loader { position:fixed; inset:0; background:#F8FAFC; display:flex; align-items:center; justify-content:center; z-index:var(--z-loader); transition:opacity .4s,visibility .4s; }
.app-loader.hidden { opacity:0; visibility:hidden; pointer-events:none; }
.loader-content { text-align:center; }
.loader-icon { font-size:3rem; color:var(--color-primary); margin-bottom:var(--space-lg); animation:pulse 1.5s ease-in-out infinite; }
.loader-bar { width:200px; height:3px; background:#E2E8F0; border-radius:4px; overflow:hidden; }
.loader-bar-fill { height:100%; width:40%; background:linear-gradient(90deg, var(--color-primary), #818CF8); border-radius:4px; animation:loaderSlide 1.2s ease-in-out infinite; }
@keyframes loaderSlide { 0%{transform:translateX(-100%)} 100%{transform:translateX(350%)} }
@keyframes pulse { 0%,100%{transform:scale(1);opacity:1} 50%{transform:scale(1.1);opacity:.7} }

/* APP SHELL */
.app-shell { display:flex; min-height:100vh; min-height:100dvh; }

/* SIDEBAR */
.sidebar { position:fixed; left:0; top:0; bottom:0; width:var(--sidebar-width); background:var(--sidebar-bg); z-index:var(--z-sidebar); display:flex; flex-direction:column; transition:transform var(--transition-base); overflow-y:auto; -webkit-overflow-scrolling:touch; }
.sidebar-header { display:flex; align-items:center; justify-content:space-between; padding:var(--space-lg); border-bottom:1px solid rgba(255,255,255,.08); }
.sidebar-logo { display:flex; align-items:center; gap:var(--space-sm); color:#fff; text-decoration:none; }
.sidebar-logo-mark { flex-shrink:0; line-height:0; }
.sidebar-logo-text { display:flex; flex-direction:column; gap:0; }
.slg-main { font-family:var(--font-display); font-size:var(--text-lg); font-weight:700; color:#fff; line-height:1.2; letter-spacing:-.3px; }
.slg-sub { font-size:.65rem; color:rgba(255,255,255,.45); font-weight:500; letter-spacing:.4px; text-transform:uppercase; line-height:1; }
.sidebar-close { background:none; border:none; color:var(--sidebar-text); font-size:1.2rem; cursor:pointer; display:none; padding:8px; }
.sidebar-user { display:flex; align-items:center; gap:var(--space-md); padding:var(--space-lg); border-bottom:1px solid rgba(255,255,255,.08); }
.sidebar-avatar { width:40px; height:40px; border-radius:var(--radius-full); background:linear-gradient(135deg, var(--color-primary-light), #818CF8); color:#fff; display:flex; align-items:center; justify-content:center; font-weight:600; font-size:var(--text-sm); flex-shrink:0; }
.sidebar-user-info { display:flex; flex-direction:column; overflow:hidden; min-width:0; }
.sidebar-user-name { color:#fff; font-weight:500; font-size:var(--text-sm); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.sidebar-user-role { color:var(--sidebar-text); font-size:var(--text-xs); text-transform:uppercase; letter-spacing:.5px; }
.sidebar-nav { flex:1; padding:var(--space-md) 0; }
.sidebar-nav .nav-group-label { display:block; padding:var(--space-md) var(--space-lg) var(--space-xs); font-size:var(--text-xs); font-weight:600; text-transform:uppercase; letter-spacing:1px; color:rgba(255,255,255,.35); }
.sidebar-nav a { display:flex; align-items:center; gap:var(--space-md); padding:10px var(--space-lg); color:var(--sidebar-text); font-size:var(--text-sm); border-left:3px solid transparent; text-decoration:none; transition:all var(--transition-fast); }
.sidebar-nav a:hover { background:var(--sidebar-hover); color:var(--sidebar-text-active); }
.sidebar-nav a.active { background:var(--sidebar-active); color:var(--sidebar-text-active); border-left-color:var(--sidebar-active-border); font-weight:500; }
.sidebar-nav a i { width:20px; text-align:center; font-size:.95rem; }
.sidebar-footer { padding:var(--space-md) var(--space-lg); border-top:1px solid rgba(255,255,255,.08); }
.sidebar-logout { display:flex; align-items:center; gap:var(--space-md); background:none; border:none; color:#F87171; font-size:var(--text-sm); cursor:pointer; padding:var(--space-sm) 0; width:100%; }
.sidebar-overlay { display:none; position:fixed; inset:0; background:rgba(0,0,0,.5); z-index:var(--z-overlay); -webkit-tap-highlight-color:transparent; }

/* MAIN */
.main-wrapper { flex:1; margin-left:var(--sidebar-width); min-height:100vh; min-height:100dvh; display:flex; flex-direction:column; }
.topbar { position:sticky; top:0; height:var(--topbar-height); background:var(--topbar-bg); box-shadow:var(--topbar-shadow); display:flex; align-items:center; justify-content:space-between; padding:0 var(--space-xl); z-index:var(--z-topbar); }
.topbar-left { display:flex; align-items:center; gap:var(--space-md); min-width:0; }
.menu-toggle { display:none; background:none; border:none; font-size:1.3rem; color:var(--color-text); cursor:pointer; padding:8px; -webkit-tap-highlight-color:transparent; }
.topbar-title { font-size:var(--text-lg); font-weight:600; white-space:nowrap; overflow:hidden; text-overflow:ellipsis; }
.topbar-right { display:flex; align-items:center; gap:var(--space-sm); flex-shrink:0; }
.topbar-btn { position:relative; width:40px; height:40px; border-radius:var(--radius-md); border:none; background:var(--color-bg); color:var(--color-text-secondary); cursor:pointer; display:flex; align-items:center; justify-content:center; font-size:1.1rem; transition:all var(--transition-fast); -webkit-tap-highlight-color:transparent; }
.topbar-btn:hover { background:var(--color-primary-bg); color:var(--color-primary); }

/* USER MENU */
.user-menu { position:relative; }
.user-menu-trigger { display:flex; align-items:center; gap:8px; background:var(--color-bg); border:none; border-radius:var(--radius-md); padding:4px 10px 4px 4px; cursor:pointer; color:var(--color-text); transition:all var(--transition-fast); height:40px; -webkit-tap-highlight-color:transparent; }
.user-menu-trigger:hover { background:var(--color-primary-bg); }
.user-menu.open .user-menu-trigger { background:var(--color-primary-bg); }
.topbar-avatar { width:32px; height:32px; border-radius:var(--radius-full); background:linear-gradient(135deg, var(--color-primary-light), #818CF8); color:#fff; display:flex; align-items:center; justify-content:center; font-weight:700; font-size:11px; letter-spacing:.5px; flex-shrink:0; }
.topbar-user-name { font-size:var(--text-sm); font-weight:600; max-width:130px; overflow:hidden; text-overflow:ellipsis; white-space:nowrap; color:var(--color-text); }
.user-menu-chevron { font-size:9px; color:var(--color-text-muted); transition:transform .2s ease; flex-shrink:0; }
.user-menu.open .user-menu-chevron { transform:rotate(180deg); }
.user-menu-dropdown { position:absolute; top:calc(100% + 8px); right:0; width:240px; background:var(--color-surface); border:1px solid var(--color-border); border-radius:var(--radius-lg); box-shadow:0 8px 28px rgba(0,0,0,.14); z-index:var(--z-topbar); opacity:0; transform:translateY(-6px) scale(.98); pointer-events:none; transition:opacity .15s ease,transform .15s ease; transform-origin:top right; }
.user-menu.open .user-menu-dropdown { opacity:1; transform:translateY(0) scale(1); pointer-events:auto; }
.user-menu-header { display:flex; align-items:center; gap:12px; padding:14px 16px 12px; }
.user-menu-avatar { width:40px; height:40px; border-radius:var(--radius-full); background:linear-gradient(135deg, var(--color-primary-light), #818CF8); color:#fff; display:flex; align-items:center; justify-content:center; font-weight:700; font-size:15px; flex-shrink:0; }
.user-menu-info { min-width:0; }
.user-menu-fullname { display:block; font-size:var(--text-sm); font-weight:600; color:var(--color-text); white-space:nowrap; overflow:hidden; text-overflow:ellipsis; max-width:160px; }
.user-menu-role { display:block; font-size:var(--text-xs); color:var(--color-text-muted); margin-top:3px; }
.user-menu-divider { height:1px; background:var(--color-border-light); margin:2px 0; }
.user-menu-item { display:flex; align-items:center; gap:10px; width:100%; background:none; border:none; padding:10px 16px; cursor:pointer; font-size:var(--text-sm); color:var(--color-text); text-align:left; transition:background var(--transition-fast),color var(--transition-fast); -webkit-tap-highlight-color:transparent; }
.user-menu-item i { width:16px; text-align:center; font-size:.875rem; flex-shrink:0; }
.user-menu-item:hover { background:var(--color-primary-bg); color:var(--color-primary); }
.user-menu-logout { color:var(--color-danger); }
.user-menu-logout:hover { background:rgba(220,38,38,.06); color:var(--color-danger); }

.badge { position:absolute; top:4px; right:4px; min-width:18px; height:18px; background:var(--color-danger); color:#fff; font-size:.65rem; font-weight:700; display:flex; align-items:center; justify-content:center; border-radius:10px; padding:0 4px; }
.page-content { flex:1; padding:var(--space-xl); animation:fadeIn .3s ease; }
@keyframes fadeIn { from{opacity:0;transform:translateY(6px)} to{opacity:1;transform:translateY(0)} }

/* PAGE HEADER */
.page-header { display:flex; align-items:center; justify-content:space-between; gap:var(--space-md); margin-bottom:var(--space-xl); flex-wrap:wrap; }
.page-title { font-size:var(--text-2xl); font-weight:700; font-family:var(--font-display); color:var(--color-text); line-height:1.2; }
.page-subtitle { font-size:var(--text-sm); color:var(--color-text-secondary); margin-top:4px; }
.page-actions { display:flex; align-items:center; gap:var(--space-sm); flex-wrap:wrap; flex-shrink:0; }

/* AUTH */
.auth-shell { min-height:100vh; min-height:100dvh; display:flex; flex-direction:column; align-items:stretch; background:var(--color-bg); }
#auth-content { flex:1; display:flex; flex-direction:column; }

/* TOAST */
.toast-container { position:fixed; top:var(--space-lg); right:var(--space-lg); z-index:var(--z-toast); display:flex; flex-direction:column; gap:var(--space-sm); max-width:calc(100vw - 2 * var(--space-lg)); }
.toast { display:flex; align-items:center; gap:var(--space-md); padding:var(--space-md) var(--space-lg); background:var(--color-surface); border-radius:var(--radius-md); box-shadow:var(--shadow-lg); min-width:280px; max-width:420px; animation:toastIn .3s ease; border-left:4px solid var(--color-primary); }
.toast.toast-success { border-left-color:var(--color-success); }
.toast.toast-error { border-left-color:var(--color-danger); }
.toast.toast-warning { border-left-color:var(--color-warning); }
.toast.removing { animation:toastOut .3s ease forwards; }
.toast-icon { font-size:1.1rem; flex-shrink:0; }
.toast-success .toast-icon { color:var(--color-success); }
.toast-error .toast-icon { color:var(--color-danger); }
.toast-warning .toast-icon { color:var(--color-warning); }
.toast-message { flex:1; font-size:var(--text-sm); }
.toast-close { background:none; border:none; color:var(--color-text-muted); cursor:pointer; font-size:1rem; padding:4px; }
@keyframes toastIn { from{transform:translateX(100%);opacity:0} to{transform:translateX(0);opacity:1} }
@keyframes toastOut { to{transform:translateX(100%);opacity:0} }

/* MODAL */
.modal-overlay { position:fixed; inset:0; background:rgba(15,23,42,.5); backdrop-filter:blur(4px); z-index:var(--z-modal); display:flex; align-items:center; justify-content:center; padding:var(--space-md); animation:fadeIn .2s ease; }
.modal-box { background:var(--color-surface); border-radius:var(--radius-lg); box-shadow:var(--shadow-xl); width:100%; max-width:500px; max-height:90vh; max-height:90dvh; overflow:auto; animation:modalIn .3s ease; -webkit-overflow-scrolling:touch; }
.modal-box.modal-lg { max-width:750px; }
.modal-box.modal-xl { max-width:960px; }
@keyframes modalIn { from{transform:scale(.96) translateY(8px);opacity:0} to{transform:scale(1) translateY(0);opacity:1} }
.modal-header { display:flex; align-items:center; justify-content:space-between; padding:var(--space-lg) var(--space-xl); border-bottom:1px solid var(--color-border); position:sticky; top:0; background:var(--color-surface); z-index:1; border-radius:var(--radius-lg) var(--radius-lg) 0 0; }
.modal-header h3 { font-size:var(--text-lg); }
.modal-close { background:none; border:none; font-size:1.5rem; color:var(--color-text-muted); cursor:pointer; line-height:1; padding:4px; }
.modal-body { padding:var(--space-xl); }
.modal-footer { display:flex; justify-content:flex-end; gap:var(--space-sm); padding:var(--space-lg) var(--space-xl); border-top:1px solid var(--color-border); position:sticky; bottom:0; background:var(--color-surface); border-radius:0 0 var(--radius-lg) var(--radius-lg); flex-wrap:wrap; }

/* ═══ RESPONSIVE ═══ */
@media(max-width:1024px){
    .sidebar { transform:translateX(-100%); }
    .sidebar.open { transform:translateX(0); }
    .sidebar.open+.sidebar-overlay { display:block; }
    .sidebar-close { display:block; }
    .main-wrapper { margin-left:0; }
    .menu-toggle { display:block; }
}

@media(max-width:768px){
    .page-content { padding:var(--space-md); }
    .topbar { padding:0 var(--space-md); }
    .topbar-title { font-size:var(--text-base); }
    .modal-body { padding:var(--space-lg); }
    .modal-header { padding:var(--space-md) var(--space-lg); }
    .modal-footer { padding:var(--space-md) var(--space-lg); }
    .topbar-user-name { display:none; }
    .user-menu-trigger { padding:4px; }
}

/* ═══ SUBMENU NAV ═══ */
.nav-parent-header { display:flex; align-items:center; gap:var(--space-md); padding:10px var(--space-lg); color:var(--sidebar-text); font-size:var(--text-sm); cursor:pointer; transition:all var(--transition-fast); border-left:3px solid transparent; user-select:none; }
.nav-parent-header:hover { background:var(--sidebar-hover); color:var(--sidebar-text-active); }
.nav-parent-header > i:first-child { width:20px; text-align:center; font-size:.95rem; flex-shrink:0; }
.nav-parent-header > span { flex:1; }
.nav-chevron { font-size:.65rem; transition:transform .25s ease; flex-shrink:0; opacity:.5; }
.nav-parent.open > .nav-parent-header .nav-chevron { transform:rotate(90deg); opacity:1; }
.nav-parent.has-active > .nav-parent-header { color:var(--sidebar-text-active); }
.nav-parent.has-active > .nav-parent-header > i:first-child { color:var(--sidebar-active-border); }
.nav-submenu { max-height:0; overflow:hidden; transition:max-height .3s ease; background:rgba(0,0,0,.12); }
.nav-parent.open > .nav-submenu { max-height:900px; }
.nav-submenu a { padding-left:calc(var(--space-lg) + 24px) !important; font-size:calc(var(--text-sm) - .5px); border-left:3px solid transparent; }
.nav-submenu a:hover { border-left-color:rgba(255,255,255,.2); }
.nav-submenu a.active { border-left-color:var(--sidebar-active-border); background:var(--sidebar-active); color:var(--sidebar-text-active); font-weight:500; }

@media(max-width:640px){
    .page-content { padding:var(--space-sm); }
    .toast-container { left:var(--space-sm); right:var(--space-sm); top:var(--space-sm); }
    .toast { min-width:unset; width:100%; }
    .modal-overlay { padding:var(--space-sm); align-items:flex-end; padding-bottom:env(safe-area-inset-bottom,0px); }
    .modal-box { max-height:95vh; max-height:95dvh; border-radius:var(--radius-lg) var(--radius-lg) 0 0; }
    .modal-header { border-radius:var(--radius-lg) var(--radius-lg) 0 0; }
    .modal-footer { padding-bottom:max(var(--space-md),calc(var(--space-xs) + env(safe-area-inset-bottom,0px))); }
    /* Page header stacks on mobile */
    .page-header { flex-direction:column; align-items:flex-start; margin-bottom:var(--space-lg); }
    .page-title { font-size:var(--text-xl); }
    .page-actions { width:100%; }
    .page-actions .btn { flex:1; justify-content:center; min-height:44px; }
    /* Modal grids collapse to 1 column */
    .modal-body [style*="grid-template-columns:1fr 1fr"],
    .modal-body [style*="grid-template-columns: 1fr 1fr"],
    .modal-body [style*="grid-template-columns:1fr 1fr 1fr"],
    .modal-body [style*="grid-template-columns: 1fr 1fr 1fr"] { grid-template-columns:1fr !important; }
    .modal-body [style*="grid-column:1/-1"],
    .modal-body [style*="grid-column: 1 / -1"] { grid-column:1 !important; }
    /* Min touch target */
    .btn, .form-input, .form-select, select { min-height:44px; }
    .btn-sm { min-height:38px; }
    .topbar-btn { width:44px; height:44px; }
}