/* ============================================================
   مكتب الطاقة المستدامة — نظام ERP
   Design System (مستند إلى الهوية الحالية مع تطويرها)
   ============================================================ */
:root {
    --navy: #0a1628;
    --navy-2: #12223a;
    --navy-3: #1a3a6f;
    --primary: #2a7de1;
    --primary-dark: #1a5fb5;
    --cyan: #4fc3f7;
    --success: #43a047;
    --success-dark: #2e7d32;
    --warning: #f5b342;
    --danger: #e74c3c;
    --danger-dark: #c62828;
    --purple: #8e24aa;
    --orange: #e67e22;
    --bg: #f4f7fc;
    --text: #1a2332;
    --muted: #6c7a94;
    --muted-2: #8f9bb5;
    --border: #e9edf4;
    --radius: 18px;
    --shadow: 0 2px 12px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
}

* { box-sizing: border-box; }

body {
    font-family: 'Cairo', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

a { text-decoration: none; }

::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: #e9edf4; }
::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 10px; }

/* ============================================================
   SIDEBAR
   ============================================================ */
.app-sidebar {
    width: 280px;
    background: var(--navy);
    color: #cbd5e1;
    position: fixed;
    top: 0; right: 0; bottom: 0;
    display: flex;
    flex-direction: column;
    z-index: 1030;
    transition: transform .3s ease, width .3s ease;
    box-shadow: 4px 0 20px rgba(0,0,0,.2);
}
.app-sidebar .brand {
    text-align: center;
    padding: 22px 20px;
    border-bottom: 1px solid var(--navy-2);
}
.app-sidebar .brand .logo-icon {
    width: 52px; height: 52px;
    background: transparent;
    border-radius: 50%;
    display: inline-flex; align-items: center; justify-content: center;
}
.app-sidebar .brand .logo-icon img { width: 100%; height: 100%; object-fit: contain; border-radius: 50%; }
.app-sidebar .brand h2 { font-size: 19px; font-weight: 800; color: #fff; margin: 8px 0 0; }
.app-sidebar .brand h2 span { color: var(--cyan); }
.app-sidebar .brand small { color: var(--muted-2); font-size: 12px; }

.app-sidebar .menu { flex: 1; overflow-y: auto; padding: 12px; }
.app-sidebar .menu-label {
    font-size: 11px; text-transform: uppercase; color: #5d6f8a;
    letter-spacing: 1px; padding: 14px 10px 6px; font-weight: 700;
}
.app-sidebar .menu a {
    display: flex; align-items: center; gap: 13px;
    padding: 11px 15px; border-radius: 10px;
    color: #b1c0d4; font-weight: 600; font-size: 14.5px;
    transition: .2s; margin-bottom: 3px;
}
.app-sidebar .menu a:hover, .app-sidebar .menu a.active { background: var(--navy-2); color: #fff; }
.app-sidebar .menu a.active { background: var(--navy-3); box-shadow: 0 4px 12px rgba(42,125,225,.2); }
.app-sidebar .menu a i { width: 22px; font-size: 17px; text-align: center; }
.app-sidebar .menu a .nav-badge {
    margin-right: auto; background: var(--cyan); color: var(--navy);
    font-size: 11px; padding: 2px 9px; border-radius: 20px; font-weight: 700;
}

.app-sidebar .user-card {
    margin: 14px 14px 12px; padding: 14px;
    background: var(--navy-2); border-radius: 14px;
    display: flex; align-items: center; gap: 12px;
}
.app-sidebar .user-card .avatar {
    width: 42px; height: 42px; border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--cyan));
    display: flex; align-items: center; justify-content: center;
    color: #fff; font-weight: 700;
}
.app-sidebar .user-card h6 { color: #fff; font-size: 14px; font-weight: 700; margin: 0; }
.app-sidebar .user-card small { color: var(--muted-2); font-size: 11px; }

/* ============================================================
   MAIN LAYOUT
   ============================================================ */
.app-main { margin-right: 280px; min-height: 100vh; display: flex; flex-direction: column; }
.app-content { padding: 24px 30px 30px; flex: 1; }

/* ============================================================
   TOPBAR
   ============================================================ */
.topbar {
    background: #fff; padding: 13px 26px; border-radius: var(--radius);
    box-shadow: var(--shadow); margin-bottom: 24px;
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 10px;
}
.topbar .page-title h4 { font-size: 21px; font-weight: 800; color: var(--navy); margin: 0; }
.topbar .page-title .breadcrumb { margin: 2px 0 0; font-size: 13px; color: var(--muted); }
.topbar .actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }

.icon-btn {
    background: #f0f4fa; width: 42px; height: 42px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    color: #1f2b41; font-size: 17px; border: none; cursor: pointer; position: relative;
    transition: .2s;
}
.icon-btn:hover { background: #e2e8f2; }
.icon-btn .dot {
    position: absolute; top: 8px; left: 8px; width: 9px; height: 9px;
    background: var(--danger); border-radius: 50%; border: 2px solid #fff;
}

/* ============================================================
   CARDS / STATS
   ============================================================ */
.card {
    background: #fff; border: 0; border-radius: var(--radius);
    box-shadow: var(--shadow); margin-bottom: 22px;
}
.card .card-header {
    background: transparent; border-bottom: 1px solid var(--border);
    padding: 18px 22px; display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 10px;
}
.card .card-header h5 { font-size: 16.5px; font-weight: 700; margin: 0; }
.card .card-body { padding: 22px; }

.stats-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(185px, 1fr));
    gap: 18px; margin-bottom: 24px;
}
.stat-card {
    background: #fff; padding: 20px 22px; border-radius: var(--radius);
    box-shadow: var(--shadow); border-right: 5px solid var(--primary);
    transition: .2s; position: relative; overflow: hidden;
}
.stat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.stat-card .label { font-size: 13.5px; color: var(--muted); font-weight: 600; }
.stat-card .value { font-size: 26px; font-weight: 800; color: var(--navy); margin: 5px 0 2px; }
.stat-card .icon { float: left; font-size: 30px; opacity: .18; }
.stat-card.tone-cyan { border-right-color: var(--cyan); }
.stat-card.tone-green { border-right-color: var(--success); }
.stat-card.tone-purple { border-right-color: var(--purple); }
.stat-card.tone-orange { border-right-color: var(--orange); }
.stat-card.tone-red { border-right-color: var(--danger); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    padding: 9px 20px; border-radius: 12px; border: none;
    font-weight: 700; font-size: 14px; cursor: pointer; transition: .2s;
    display: inline-flex; align-items: center; gap: 8px; font-family: 'Cairo', sans-serif;
}
.btn-sm { padding: 6px 13px; font-size: 12px; border-radius: 10px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 4px 14px rgba(42,125,225,.3); color:#fff; }
.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: var(--success-dark); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }
.btn-danger:hover { background: var(--danger-dark); color: #fff; }
.btn-warning { background: var(--warning); color: var(--navy); }
.btn-warning:hover { background: #e6a030; color: var(--navy); }
.btn-outline-primary { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
.btn-outline-primary:hover { background: var(--primary); color: #fff; }
.btn-cyan { background: linear-gradient(135deg, var(--primary), var(--cyan)); color: #fff; }
.btn-cyan:hover { color: #fff; transform: translateY(-1px); box-shadow: 0 4px 14px rgba(42,125,225,.4); }
.btn-purple { background: var(--purple); color: #fff; }
.btn-purple:hover { background: #6a1b82; color: #fff; }

/* ============================================================
   FORMS
   ============================================================ */
.form-label { font-weight: 600; color: #1f2b41; font-size: 13.5px; margin-bottom: 6px; }
.form-control, .form-select {
    padding: 10px 14px; border: 2px solid var(--border); border-radius: 12px;
    font-size: 14px; background: #fafbfd; transition: .2s;
}
.form-control:focus, .form-select:focus {
    border-color: var(--primary); outline: none; background: #fff;
    box-shadow: 0 0 0 4px rgba(42,125,225,.1);
}
.text-danger.validation { font-size: 12.5px; }

/* ============================================================
   TABLES
   ============================================================ */
.table-wrap { overflow-x: auto; }
.table { font-size: 14px; margin: 0; }
.table thead th {
    background: #f8fafd; color: #3e5068; font-weight: 700;
    border-bottom: 2px solid var(--border); padding: 12px 12px; white-space: nowrap;
}
.table tbody td { padding: 12px; border-bottom: 1px solid #edf2f8; vertical-align: middle; }
.table tbody tr:hover td { background: #f8fafd; }
.text-empty { text-align: center; color: var(--muted-2); padding: 34px 0; font-size: 15px; }

.badge-status {
    background: #e8f5e9; color: var(--success-dark); padding: 4px 12px;
    border-radius: 20px; font-size: 12px; font-weight: 700; white-space: nowrap;
}
.badge-status.b-warning { background: #fff3e0; color: #e65100; }
.badge-status.b-danger { background: #fdecea; color: var(--danger-dark); }
.badge-status.b-info { background: #e3f2fd; color: #0d47a1; }
.badge-status.b-purple { background: #f3e5f5; color: #6a1b82; }

/* ============================================================
   MODAL / TOAST
   ============================================================ */
.modal-content { border: 0; border-radius: 22px; }
.modal-header { border-bottom: 1px solid var(--border); }
.modal-footer { border-top: 1px solid var(--border); }

.toast-container {
    position: fixed; bottom: 26px; left: 26px; z-index: 9999;
    display: flex; flex-direction: column; gap: 10px;
}
.app-toast {
    background: var(--navy); color: #fff; padding: 14px 22px; border-radius: 12px;
    font-weight: 600; font-size: 14px; box-shadow: 0 8px 30px rgba(0,0,0,.2);
    border-right: 4px solid var(--primary); min-width: 250px; max-width: 420px;
    animation: slideIn .3s ease;
}
.app-toast.success { border-right-color: var(--success); }
.app-toast.error { border-right-color: var(--danger); }
.app-toast.warning { border-right-color: var(--warning); }
@keyframes slideIn { from { transform: translateX(50px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ============================================================
   PRODUCT IMAGE
   ============================================================ */
.product-img {
    width: 46px; height: 46px; border-radius: 10px; object-fit: cover;
    background: #e9edf4; border: 2px solid #e9edf4;
}
.product-img-empty {
    width: 46px; height: 46px; border-radius: 10px; background: #e9edf4;
    display: flex; align-items: center; justify-content: center;
    color: var(--muted-2); font-size: 18px; border: 2px dashed #dce5f0;
}

/* ============================================================
   PAGINATION
   ============================================================ */
.pagination { gap: 5px; }
.page-link { border-radius: 10px !important; border: 1px solid var(--border); color: var(--primary); }
.page-item.active .page-link { background: var(--primary); border-color: var(--primary); color: #fff; }

/* ============================================================
   LOGIN PAGE
   ============================================================ */
.login-page {
    min-height: 100vh; display: flex; align-items: center; justify-content: center;
    background: linear-gradient(135deg, var(--navy) 0%, var(--navy-3) 100%);
    padding: 20px;
}
.login-card {
    background: #fff; border-radius: 24px; width: 100%; max-width: 420px;
    padding: 38px 34px; box-shadow: 0 20px 60px rgba(0,0,0,.35);
}
.login-card .logo { text-align: center; margin-bottom: 8px; }
.login-card .logo .logo-icon {
    width: 64px; height: 64px; margin: 0 auto 12px;
    background: transparent; border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
}
.login-card .logo .logo-icon img { width: 100%; height: 100%; object-fit: contain; border-radius: 50%; }
.login-card h3 { font-weight: 800; color: var(--navy); text-align: center; margin-bottom: 4px; }
.login-card p.sub { text-align: center; color: var(--muted); font-size: 14px; margin-bottom: 24px; }

/* ============================================================
   EMPTY STATES
   ============================================================ */
.empty-state {
    text-align: center; padding: 40px; color: var(--muted-2);
}
.empty-state i { font-size: 42px; color: #dce5f0; display: block; margin-bottom: 12px; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 991px) {
    .app-sidebar { transform: translateX(100%); }
    .app-sidebar.open { transform: translateX(0); }
    .app-main { margin-right: 0; }
    .sidebar-backdrop {
        position: fixed; inset: 0; background: rgba(0,0,0,.45); z-index: 1025; display: none;
    }
    .sidebar-backdrop.show { display: block; }
}
@media (max-width: 576px) {
    .app-content { padding: 14px; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}