/* ============================================================
   FlexGym Admin — modern theme (Bootstrap 5.3 color modes)
   ============================================================ */
:root {
    --fg-primary: #10b981;      /* emerald  */
    --fg-primary-rgb: 16, 185, 129;
    --fg-primary-600: #059669;
    --fg-accent: #f59e0b;       /* amber    */
    --fg-accent-rgb: 245, 158, 11;
    --fg-success: #22c55e;
    --fg-info: #0ea5e9;
    --fg-warning: #f59e0b;

    --sidebar-w: 264px;
    --sidebar-w-collapsed: 80px;
    --topbar-h: 64px;

    --sidebar-bg: #0f172a;      /* slate-900 */
    --sidebar-bg-2: #111c33;
    --sidebar-text: #94a3b8;
    --sidebar-text-active: #ffffff;

    --app-bg: #f3f4fb;
    --card-bg: #ffffff;
    --card-border: #eceef5;
    --body-color: #1e293b;
    --muted: #64748b;
    --radius: 16px;
    --shadow-sm: 0 1px 2px rgba(16,24,40,.05);
    --shadow: 0 4px 20px rgba(16,24,40,.06);
    --shadow-lg: 0 12px 40px rgba(16,24,40,.10);
}

[data-bs-theme="dark"] {
    --sidebar-bg: #0b1220;
    --sidebar-bg-2: #0f1830;
    --sidebar-text: #94a3b8;
    --app-bg: #0b1120;
    --card-bg: #131c31;
    --card-border: #22304d;
    --body-color: #e2e8f0;
    --muted: #94a3b8;
    --shadow: 0 4px 20px rgba(0,0,0,.35);
    --shadow-lg: 0 12px 40px rgba(0,0,0,.45);
    --bs-body-bg: #0b1120;
    --bs-body-color: #e2e8f0;
}

* { -webkit-font-smoothing: antialiased; }

body {
    font-family: 'Inter', system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
    background: var(--app-bg);
    color: var(--body-color);
    font-size: .9rem;
}

.btn-primary {
    --bs-btn-bg: var(--fg-primary); --bs-btn-border-color: var(--fg-primary);
    --bs-btn-hover-bg: var(--fg-primary-600); --bs-btn-hover-border-color: var(--fg-primary-600);
    --bs-btn-active-bg: var(--fg-primary-600); --bs-btn-disabled-bg: var(--fg-primary);
    box-shadow: 0 6px 16px rgba(var(--fg-primary-rgb), .28);
}
.text-primary { color: var(--fg-primary) !important; }
.bg-primary { background-color: var(--fg-primary) !important; }
a { color: var(--fg-primary); text-decoration: none; }

/* ---------------------------------------------------------- Sidebar */
.app-sidebar {
    position: fixed; inset: 0 auto 0 0; width: var(--sidebar-w);
    background: linear-gradient(180deg, var(--sidebar-bg) 0%, var(--sidebar-bg-2) 100%);
    color: var(--sidebar-text); z-index: 1040; display: flex; flex-direction: column;
    transition: width .25s ease, transform .25s ease; overflow: hidden;
}
.app-sidebar .brand {
    height: var(--topbar-h); display: flex; align-items: center; gap: .6rem;
    padding: 0 1.25rem; color: #fff; font-weight: 800; font-size: 1.15rem; letter-spacing: -.02em;
    border-bottom: 1px solid rgba(255,255,255,.06); white-space: nowrap;
}
.app-sidebar .brand i { color: var(--fg-primary); font-size: 1.5rem; }
.app-sidebar .brand .logo-badge {
    width: 34px; height: 34px; border-radius: 10px; flex: 0 0 34px;
    background: linear-gradient(135deg, var(--fg-primary), var(--fg-accent));
    display: grid; place-items: center; color: #fff; font-size: 1.1rem;
}
.sidebar-nav { padding: .75rem .75rem 2rem; overflow-y: auto; flex: 1; }
.sidebar-nav::-webkit-scrollbar { width: 6px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,.12); border-radius: 3px; }
.sidebar-heading {
    font-size: .68rem; text-transform: uppercase; letter-spacing: .09em;
    color: #475569; font-weight: 700; padding: 1rem .85rem .35rem; white-space: nowrap;
}
.sidebar-nav .nav-link {
    display: flex; align-items: center; gap: .8rem; padding: .62rem .85rem; margin-bottom: 2px;
    color: var(--sidebar-text); border-radius: 11px; font-weight: 500; white-space: nowrap;
    transition: background .15s, color .15s;
}
.sidebar-nav .nav-link i { font-size: 1.15rem; width: 22px; text-align: center; flex: 0 0 22px; }
.sidebar-nav .nav-link:hover { background: rgba(255,255,255,.05); color: #fff; }
.sidebar-nav .nav-link.active {
    background: linear-gradient(90deg, rgba(var(--fg-primary-rgb), .22), rgba(var(--fg-primary-rgb), .05));
    color: #fff; box-shadow: inset 3px 0 0 var(--fg-primary);
}
.sidebar-nav .nav-link .badge { margin-left: auto; }

/* Collapsed (desktop) */
body.sidebar-collapsed .app-sidebar { width: var(--sidebar-w-collapsed); }
body.sidebar-collapsed .app-sidebar .label,
body.sidebar-collapsed .app-sidebar .sidebar-heading,
body.sidebar-collapsed .app-sidebar .brand .brand-text { display: none; }
body.sidebar-collapsed .app-sidebar .nav-link { justify-content: center; }
body.sidebar-collapsed .app-main { margin-left: var(--sidebar-w-collapsed); }

/* ---------------------------------------------------------- Main + topbar */
.app-main { margin-left: var(--sidebar-w); transition: margin .25s ease; min-height: 100vh; }
.app-topbar {
    height: var(--topbar-h); position: sticky; top: 0; z-index: 1030;
    background: rgba(255,255,255,.82); backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border); display: flex; align-items: center;
    gap: .75rem; padding: 0 1.25rem;
}
[data-bs-theme="dark"] .app-topbar { background: rgba(19,28,49,.82); }
.app-content { padding: 1.5rem; max-width: 1500px; }

.topbar-search { position: relative; max-width: 340px; flex: 1; }
.topbar-search i { position: absolute; left: .85rem; top: 50%; transform: translateY(-50%); color: var(--muted); }
.topbar-search input {
    padding-left: 2.4rem; border-radius: 12px; background: var(--app-bg);
    border: 1px solid transparent; height: 42px;
}
.topbar-search input:focus { background: var(--card-bg); border-color: var(--fg-primary); box-shadow: none; }
.search-results {
    position: absolute; top: calc(100% + 8px); left: 0; right: 0; z-index: 1050;
    background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 14px;
    box-shadow: var(--shadow-lg); overflow: hidden; display: none; max-height: 380px; overflow-y: auto;
}
.search-results.show { display: block; }
.search-results .sr-item { display: flex; align-items: center; gap: .7rem; padding: .6rem .85rem; cursor: pointer; color: var(--body-color); border-bottom: 1px solid var(--card-border); }
.search-results .sr-item:last-child { border-bottom: 0; }
.search-results .sr-item:hover, .search-results .sr-item.active { background: rgba(var(--fg-primary-rgb), .08); }
.search-results .sr-ico { width: 34px; height: 34px; border-radius: 9px; display: grid; place-items: center; flex: 0 0 34px; }
.search-results .sr-title { font-weight: 600; font-size: .85rem; }
.search-results .sr-sub { font-size: .73rem; color: var(--muted); }
.search-results .sr-empty { padding: 1rem; text-align: center; color: var(--muted); font-size: .82rem; }
.icon-btn {
    width: 42px; height: 42px; border-radius: 12px; border: 1px solid var(--card-border);
    background: var(--card-bg); color: var(--body-color); display: inline-grid; place-items: center;
    font-size: 1.15rem; position: relative; transition: .15s;
}
.icon-btn:hover { border-color: var(--fg-primary); color: var(--fg-primary); }
.icon-btn .dot { position: absolute; top: 9px; right: 10px; width: 8px; height: 8px; border-radius: 50%; background: var(--fg-accent); border: 2px solid var(--card-bg); }

/* ---------------------------------------------------------- Avatars */
.avatar {
    width: 40px; height: 40px; border-radius: 12px; display: inline-grid; place-items: center;
    font-weight: 700; color: #fff; font-size: .85rem; flex: 0 0 auto; letter-spacing: .02em;
    background: linear-gradient(135deg, var(--fg-primary), #14b8a6);
}
.avatar.sm { width: 32px; height: 32px; border-radius: 9px; font-size: .72rem; }
.avatar.lg { width: 64px; height: 64px; border-radius: 18px; font-size: 1.3rem; }
.avatar.a1 { background: linear-gradient(135deg,#10b981,#14b8a6); }
.avatar.a2 { background: linear-gradient(135deg,#f43f5e,#fb7185); }
.avatar.a3 { background: linear-gradient(135deg,#10b981,#34d399); }
.avatar.a4 { background: linear-gradient(135deg,#0ea5e9,#38bdf8); }
.avatar.a5 { background: linear-gradient(135deg,#f59e0b,#fbbf24); }

/* ---------------------------------------------------------- Cards */
.card {
    border: 1px solid var(--card-border); border-radius: var(--radius);
    background: var(--card-bg); box-shadow: var(--shadow-sm);
}
.card-header { background: transparent; border-bottom: 1px solid var(--card-border); font-weight: 600; padding: 1rem 1.25rem; }
.card-body { padding: 1.25rem; }

.stat-card { position: relative; overflow: hidden; }
.stat-card .stat-icon {
    width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; font-size: 1.5rem;
}
.stat-card .stat-value { font-size: 1.75rem; font-weight: 800; letter-spacing: -.02em; line-height: 1.1; }
.stat-card .stat-label { color: var(--muted); font-size: .82rem; font-weight: 500; }
.stat-trend { font-size: .75rem; font-weight: 700; }
.soft-primary { background: rgba(var(--fg-primary-rgb), .12); color: var(--fg-primary); }
.soft-accent  { background: rgba(var(--fg-accent-rgb), .12);  color: var(--fg-accent); }
.soft-success { background: rgba(16,185,129,.14); color: #10b981; }
.soft-info    { background: rgba(14,165,233,.14); color: #0ea5e9; }
.soft-warning { background: rgba(245,158,11,.16); color: #f59e0b; }

/* Badges */
.badge.bg-success-subtle { background: rgba(16,185,129,.14) !important; }
.badge.bg-danger-subtle  { background: rgba(244,63,94,.14) !important; }
.badge.bg-warning-subtle { background: rgba(245,158,11,.16) !important; }
.badge.bg-info-subtle    { background: rgba(14,165,233,.14) !important; }
.badge.bg-primary-subtle { background: rgba(var(--fg-primary-rgb),.14) !important; }
.badge.bg-secondary-subtle { background: rgba(100,116,139,.16) !important; }
.badge.bg-dark-subtle { background: rgba(30,41,59,.16) !important; }
.badge { font-weight: 600; padding: .4em .7em; }

/* Tables / DataTables */
table.dataTable thead th { font-size: .72rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); font-weight: 700; border-bottom: 1px solid var(--card-border) !important; }
table.dataTable tbody td { vertical-align: middle; }
.table > :not(caption) > * > * { padding: .8rem .75rem; }
div.dataTables_wrapper div.dataTables_filter input { border-radius: 10px; border: 1px solid var(--card-border); }
.dataTables_wrapper .dataTables_paginate .paginate_button.current {
    background: var(--fg-primary) !important; border-color: var(--fg-primary) !important; color: #fff !important; border-radius: 8px;
}
.dataTables_wrapper .dataTables_paginate .paginate_button { border-radius: 8px !important; }

/* Forms */
.form-control, .form-select { border-radius: 11px; border-color: var(--card-border); padding: .55rem .85rem; background: var(--card-bg); color: var(--body-color); }
.form-control:focus, .form-select:focus { border-color: var(--fg-primary); box-shadow: 0 0 0 .2rem rgba(var(--fg-primary-rgb), .15); }
.form-label { font-weight: 600; font-size: .82rem; margin-bottom: .35rem; }
.input-group-text { border-radius: 11px; background: var(--app-bg); border-color: var(--card-border); }

.page-title { font-weight: 800; letter-spacing: -.02em; margin: 0; font-size: 1.4rem; }
.page-subtitle { color: var(--muted); font-size: .85rem; }
.breadcrumb { --bs-breadcrumb-divider: '›'; font-size: .8rem; margin: 0; }

/* Offcanvas backdrop on mobile handled by class */
.sidebar-backdrop { position: fixed; inset: 0; background: rgba(15,23,42,.5); z-index: 1035; display: none; }
.sidebar-backdrop.show { display: block; }

/* ---------------------------------------------------------- Login */
.auth-wrap { min-height: 100vh; display: grid; grid-template-columns: 1.1fr 1fr; }
.auth-hero {
    background:
        linear-gradient(150deg, rgba(2,44,34,.92) 0%, rgba(4,120,87,.72) 55%, rgba(16,185,129,.55) 100%),
        url('https://images.unsplash.com/photo-1594381898411-846e7d193883?auto=format&fit=crop&w=1200&q=80') center/cover no-repeat;
    background-color: #022c22;
    color: #fff; padding: 3.5rem; display: flex; flex-direction: column; justify-content: space-between; position: relative; overflow: hidden;
}
.auth-hero::after { content:''; position:absolute; width:460px; height:460px; right:-140px; bottom:-160px; background: radial-gradient(circle, rgba(255,255,255,.18), transparent 65%); }
.auth-hero .hero-badge { width:56px;height:56px;border-radius:16px;background:rgba(255,255,255,.15);display:grid;place-items:center;font-size:1.8rem; }
.auth-hero h1 { font-weight: 800; font-size: 2.4rem; line-height: 1.15; letter-spacing: -.03em; }
.auth-form-side { display: grid; place-items: center; padding: 2rem; background: var(--card-bg); }
.auth-card { width: 100%; max-width: 400px; }
.auth-demo-chip { cursor: pointer; transition: .15s; }
.auth-demo-chip:hover { border-color: var(--fg-primary) !important; transform: translateY(-1px); }
@media (max-width: 992px) { .auth-wrap { grid-template-columns: 1fr; } .auth-hero { display: none; } }

/* Responsive sidebar */
@media (max-width: 991.98px) {
    .app-sidebar { transform: translateX(-100%); box-shadow: var(--shadow-lg); }
    body.sidebar-open .app-sidebar { transform: translateX(0); }
    .app-main { margin-left: 0 !important; }
    .app-content { padding: 1rem; }
}

/* Small helpers */
.cursor-pointer { cursor: pointer; }
.text-muted-2 { color: var(--muted) !important; }
.divider-y { border-left: 1px solid var(--card-border); height: 28px; }
.list-tight li { padding: .55rem 0; border-bottom: 1px dashed var(--card-border); }
.list-tight li:last-child { border-bottom: 0; }
.progress { background: var(--app-bg); border-radius: 20px; }
.hover-lift { transition: transform .18s, box-shadow .18s; }
.hover-lift:hover { transform: translateY(-3px); box-shadow: var(--shadow); }