/* ── App Layout — sidebar + topbar + main ── */
.app-layout { display: flex; min-height: 100vh; }

/* ── Sidebar ── */
.sidebar {
    width: var(--sidebar-width);
    background: var(--white);
    border-right: 1px solid var(--gray-200);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; bottom: 0;
    z-index: 40;
    transition: transform 0.25s ease;
}
.sidebar-brand {
    padding: 20px 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--gray-100);
}
.sidebar-brand img { height: 32px; width: auto; }
.sidebar-brand .brand-name { font-size: 20px; font-weight: 800; color: var(--dark); }
.sidebar-nav { flex: 1; padding: 16px 12px; overflow-y: auto; }
.sidebar-nav a, .sidebar-nav button {
    display: flex; align-items: center; gap: 12px;
    padding: 10px 16px; margin-bottom: 2px;
    font-size: 14px; font-weight: 500;
    color: var(--gray-600); border-radius: var(--radius);
    transition: all 0.15s; cursor: pointer;
    text-decoration: none; border: none; background: none; width: 100%; text-align: left;
    font-family: var(--font);
}
.sidebar-nav a:hover, .sidebar-nav button:hover { background: var(--gray-100); color: var(--dark); }
.sidebar-nav a.active { background: var(--primary-50); color: var(--primary); font-weight: 600; }
.sidebar-nav .nav-icon { width: 20px; height: 20px; opacity: 0.7; flex-shrink: 0; }
.sidebar-nav a.active .nav-icon { opacity: 1; }
.sidebar-section { padding: 16px 16px 6px; font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.2px; color: var(--gray-400); }
.sidebar-footer { padding: 16px; border-top: 1px solid var(--gray-100); }
.sidebar-user { display: flex; align-items: center; gap: 12px; padding: 8px; border-radius: var(--radius); }
.sidebar-user .user-avatar {
    width: 36px; height: 36px; border-radius: 50%;
    background: var(--primary-50); color: var(--primary);
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 14px;
}
.sidebar-user .user-info { flex: 1; min-width: 0; }
.sidebar-user .user-name { font-size: 14px; font-weight: 600; color: var(--dark); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sidebar-user .user-role { font-size: 12px; color: var(--gray-400); text-transform: capitalize; }

/* ── Topbar (mobile) ── */
.topbar {
    display: none;
    position: fixed; top: 0; left: 0; right: 0;
    height: var(--topbar-height);
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 0 16px;
    align-items: center;
    justify-content: space-between;
    z-index: 30;
}
.topbar-brand { display: flex; align-items: center; gap: 10px; }
.topbar-brand img { height: 28px; }
.topbar-brand span { font-size: 18px; font-weight: 800; color: var(--dark); }
.hamburger {
    width: 40px; height: 40px; border: none; background: none; cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    border-radius: var(--radius-sm); color: var(--gray-600);
}
.hamburger:hover { background: var(--gray-100); }
.hamburger svg { width: 24px; height: 24px; }

/* ── Main Content ── */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 32px;
    min-height: 100vh;
}
.page-header { margin-bottom: 28px; }
.page-header h1 { font-size: 24px; font-weight: 800; color: var(--dark); margin-bottom: 4px; }
.page-header p { font-size: 14px; color: var(--gray-500); }
.page-header-row { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }

/* ── Overlay (mobile sidebar) ── */
.sidebar-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,0.3); z-index: 35;
}

/* ── Responsive ── */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.open { transform: translateX(0); }
    .sidebar-overlay.open { display: block; }
    .topbar { display: flex; }
    .main-content { margin-left: 0; padding: 16px; padding-top: calc(var(--topbar-height) + 16px); }
}

/* ── Login layout (no sidebar) ── */
.auth-layout {
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, #f0f0ff 0%, #e8e0ff 50%, #f0f0ff 100%);
    padding: 24px;
}
.auth-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 40px;
    width: 100%;
    max-width: 420px;
}
.auth-card .auth-logo { text-align: center; margin-bottom: 28px; }
.auth-card .auth-logo img { height: 40px; }
.auth-card .auth-logo .brand-text { font-size: 26px; font-weight: 800; color: var(--dark); }
.auth-card h2 { font-size: 22px; font-weight: 700; color: var(--dark); margin-bottom: 8px; text-align: center; }
.auth-card .auth-subtitle { font-size: 14px; color: var(--gray-500); text-align: center; margin-bottom: 28px; }