:root {
    --brand-primary: #0d4f8c;
    --brand-primary-dark: #083763;
    --brand-accent: #17a2b8;
    --sidebar-bg: #0d2d52;
    --sidebar-bg-dark: #082142;
    --sidebar-fg: #cfe2ff;
    --sidebar-fg-hover: #fff;
    --sidebar-active: #1d60a6;
    --sidebar-width: 260px;
    --content-bg: #f4f6fa;
}

* { box-sizing: border-box; }

html, body {
    height: 100%;
    font-family: 'Cairo', 'Segoe UI', Tahoma, Arial, sans-serif;
    background: var(--content-bg);
    color: #2c3e50;
    margin: 0;
}

a { color: var(--brand-primary); text-decoration: none; }
a:hover { color: var(--brand-primary-dark); }

/* ===== Sidebar ===== */
.app-sidebar {
    position: fixed;
    top: 0;
    right: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--sidebar-bg) 0%, var(--sidebar-bg-dark) 100%);
    color: var(--sidebar-fg);
    padding: 0;
    z-index: 1000;
    overflow-y: auto;
    box-shadow: -2px 0 8px rgba(0,0,0,.12);
}

.sidebar-brand {
    display: flex;
    align-items: center;
    gap: .7rem;
    padding: 1.5rem 1.25rem;
    background: rgba(0,0,0,.18);
    border-bottom: 1px solid rgba(255,255,255,.08);
}
.sidebar-brand i { font-size: 2.2rem; color: #ffd166; }
.brand-title { font-size: 1.15rem; font-weight: 700; color: #fff; }
.brand-sub { font-size: .8rem; color: var(--sidebar-fg); opacity: .75; }

.sidebar-nav { padding: .75rem 0; }
.sidebar-nav .nav-link {
    display: flex;
    align-items: center;
    gap: .7rem;
    color: var(--sidebar-fg);
    padding: .8rem 1.4rem;
    font-size: .95rem;
    border-right: 3px solid transparent;
    transition: all .15s ease;
}
.sidebar-nav .nav-link:hover {
    background: rgba(255,255,255,.06);
    color: var(--sidebar-fg-hover);
    border-right-color: #ffd166;
}
.sidebar-nav .nav-link.active {
    background: var(--sidebar-active);
    color: #fff;
    border-right-color: #ffd166;
}
.sidebar-nav .nav-link i { font-size: 1.1rem; width: 1.4rem; text-align: center; }
.sidebar-heading {
    font-size: .75rem;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: rgba(255,255,255,.45);
    padding: 1rem 1.4rem .3rem;
    margin-top: .5rem;
    border-top: 1px solid rgba(255,255,255,.07);
}

/* ===== Main area ===== */
body.has-sidebar .app-main {
    margin-right: var(--sidebar-width);
}
.app-main {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-navbar {
    background: #fff;
    border-bottom: 1px solid #e4e8ef;
    box-shadow: 0 1px 3px rgba(0,0,0,.04);
    padding: 0 1.5rem;
    position: sticky;
    top: 0;
    z-index: 500;
}
.navbar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}
.page-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--brand-primary);
}
.navbar-right { display: flex; align-items: center; gap: .75rem; }
.user-chip {
    background: #f1f5fa;
    padding: .4rem .85rem;
    border-radius: 30px;
    font-size: .9rem;
    display: inline-flex;
    align-items: center;
    gap: .4rem;
}
.user-chip i { color: var(--brand-primary); font-size: 1.1rem; }

.app-content {
    flex: 1;
    padding: 1.75rem;
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
}

.app-footer {
    background: #fff;
    border-top: 1px solid #e4e8ef;
    padding: 1rem;
    text-align: center;
    color: #7a8595;
    font-size: .85rem;
}

/* ===== Cards / Page chrome ===== */
.card {
    border: 1px solid #e4e8ef;
    border-radius: 12px;
    box-shadow: 0 1px 2px rgba(0,0,0,.03);
}
.card-header {
    background: #fafbfd;
    border-bottom: 1px solid #e9edf3;
    font-weight: 600;
    color: var(--brand-primary);
    border-radius: 12px 12px 0 0 !important;
}
.btn-primary {
    background: var(--brand-primary);
    border-color: var(--brand-primary);
}
.btn-primary:hover {
    background: var(--brand-primary-dark);
    border-color: var(--brand-primary-dark);
}
.table { vertical-align: middle; }
.table thead th {
    background: #f1f5fa;
    color: var(--brand-primary);
    font-weight: 600;
    border-bottom: 2px solid #d8dfe8;
}

.stat-card {
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 1rem;
    box-shadow: 0 4px 12px rgba(0,0,0,.08);
}
.stat-card .stat-icon {
    font-size: 2.5rem;
    opacity: .9;
}
.stat-card .stat-value { font-size: 1.8rem; font-weight: 700; line-height: 1; }
.stat-card .stat-label { font-size: .9rem; opacity: .9; margin-top: .25rem; }
.stat-card.bg-blue   { background: linear-gradient(135deg, #2d6cdf, #1b4dac); }
.stat-card.bg-green  { background: linear-gradient(135deg, #27ae60, #1e8449); }
.stat-card.bg-orange { background: linear-gradient(135deg, #e67e22, #b8651d); }
.stat-card.bg-purple { background: linear-gradient(135deg, #8e44ad, #6c3483); }

/* ===== Login ===== */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--brand-primary) 0%, var(--sidebar-bg-dark) 100%);
    padding: 1rem;
}
.login-card {
    background: #fff;
    border-radius: 16px;
    padding: 2.5rem;
    max-width: 420px;
    width: 100%;
    box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
.login-brand {
    text-align: center;
    margin-bottom: 1.75rem;
}
.login-brand i {
    font-size: 3.5rem;
    color: var(--brand-primary);
    background: #eef4fb;
    width: 90px;
    height: 90px;
    line-height: 90px;
    border-radius: 50%;
    display: inline-block;
}
.login-brand h1 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--brand-primary);
    margin: .75rem 0 .2rem;
}
.login-brand p { color: #7a8595; font-size: .9rem; margin: 0; }

/* ===== Responsive ===== */
@media (max-width: 992px) {
    :root { --sidebar-width: 0px; }
    .app-sidebar { transform: translateX(100%); transition: transform .25s; }
    body.has-sidebar .app-main { margin-right: 0; }
}

/* Utility */
.text-brand { color: var(--brand-primary); }
.bg-brand { background: var(--brand-primary); color: #fff; }