:root {
    --bg: #f4f6fb;
    --card: #ffffff;
    --text: #111827;
    --muted: #6b7280;
    --border: #e5e7eb;
    --primary: #111827;
    --primary-2: #1f2937;
    --soft: #f9fafb;
    --danger: #dc2626;
    --success: #16a34a;
    --warning: #d97706;
    --radius: 18px;
    --shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
}

body {
    margin: 0;
    min-height: 100%;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--bg);
    color: var(--text);
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
select,
textarea {
    font: inherit;
}

/* =========================
   AUTH
========================= */

.auth-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background:
        radial-gradient(circle at top left, rgba(17, 24, 39, 0.12), transparent 35%),
        linear-gradient(135deg, #f8fafc, #eef2ff);
}

.auth-shell {
    width: 100%;
    max-width: 460px;
}

.auth-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 28px;
    box-shadow: var(--shadow);
    padding: 30px;
}

.auth-brand {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 26px;
}

.auth-logo,
.brand-mark {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    background: var(--primary);
    color: #fff;
    display: grid;
    place-items: center;
    font-weight: 900;
    letter-spacing: -0.05em;
}

.auth-brand h1 {
    font-size: 20px;
    margin: 0;
}

.auth-brand p,
.auth-help p {
    margin: 4px 0 0;
    color: var(--muted);
    font-size: 14px;
}

.auth-card h2 {
    margin: 0 0 18px;
    font-size: 28px;
    letter-spacing: -0.04em;
}

.auth-form {
    display: grid;
    gap: 12px;
}

.auth-form label {
    font-weight: 800;
    font-size: 14px;
}

input,
select,
textarea {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 13px 14px;
    background: #fff;
    color: var(--text);
    outline: none;
}

input:focus,
select:focus,
textarea:focus {
    border-color: #111827;
    box-shadow: 0 0 0 4px rgba(17, 24, 39, 0.08);
}

.btn {
    border: 0;
    border-radius: 14px;
    padding: 12px 16px;
    font-weight: 900;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    margin-top: 8px;
}

.btn-light {
    background: #f3f4f6;
    color: var(--text);
    border: 1px solid var(--border);
}

.alert {
    padding: 12px 14px;
    border-radius: 14px;
    margin-bottom: 16px;
    font-weight: 800;
    font-size: 14px;
}

.alert-error {
    background: #fef2f2;
    color: var(--danger);
    border: 1px solid #fecaca;
}

.auth-help {
    margin-top: 22px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

/* =========================
   APP LAYOUT
========================= */

.app-page {
    min-height: 100vh;
}

.topbar {
    min-height: 72px;
    padding: 12px 22px;
    background: #fff;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    position: sticky;
    top: 0;
    z-index: 20;
}

.topbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.topbar-brand .brand-mark {
    width: 44px;
    height: 44px;
    border-radius: 14px;
    font-size: 15px;
}

.topbar-brand strong {
    display: block;
    font-size: 16px;
}

.topbar-brand span,
.muted {
    display: block;
    color: var(--muted);
    font-size: 13px;
}

.topbar-user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.app-layout {
    display: grid;
    grid-template-columns: 270px 1fr;
    min-height: calc(100vh - 72px);
}

.sidebar {
    background: #fff;
    border-right: 1px solid var(--border);
    padding: 18px;
}

.sidebar nav {
    display: grid;
    gap: 8px;
}

.sidebar a {
    padding: 12px 14px;
    border-radius: 14px;
    color: #374151;
    font-weight: 800;
    font-size: 14px;
}

.sidebar a:hover,
.sidebar a.active {
    background: var(--primary);
    color: #fff;
}

.content {
    padding: 28px;
}

.page-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 24px;
}

.page-head h1 {
    margin: 0;
    font-size: 34px;
    letter-spacing: -0.055em;
}

.page-head p {
    margin: 6px 0 0;
    color: var(--muted);
}

.page-badge {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 10px 14px;
    font-weight: 900;
    color: #374151;
    box-shadow: 0 8px 20px rgba(15, 23, 42, 0.04);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.stat-card,
.panel,
.staff-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: 0 10px 25px rgba(15, 23, 42, 0.04);
}

.stat-card {
    padding: 18px;
}

.stat-card span {
    display: block;
    color: var(--muted);
    font-size: 14px;
    font-weight: 800;
}

.stat-card strong {
    display: block;
    font-size: 36px;
    margin: 8px 0 4px;
    letter-spacing: -0.06em;
}

.stat-card small {
    color: var(--muted);
}

.two-columns {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 16px;
}

.panel {
    padding: 22px;
}

.panel h2 {
    margin: 0 0 8px;
}

.panel p {
    color: var(--muted);
    line-height: 1.65;
}

.panel.compact p {
    margin: 8px 0;
}

.check-list {
    display: grid;
    gap: 8px;
    margin-top: 16px;
}

.check-list div {
    background: var(--soft);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 10px 12px;
    font-weight: 800;
}

.mini-stats {
    display: grid;
    gap: 10px;
    margin-top: 18px;
}

.mini-stats div {
    background: var(--soft);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 12px;
}

.mini-stats span {
    display: block;
    color: var(--muted);
    font-size: 13px;
    font-weight: 800;
}

.mini-stats strong {
    display: block;
    margin-top: 4px;
    word-break: break-word;
}

/* =========================
   STAFF
========================= */

.staff-shell {
    min-height: calc(100vh - 72px);
    display: grid;
    place-items: center;
    padding: 22px;
}

.staff-card {
    width: 100%;
    max-width: 760px;
    padding: 26px;
}

.staff-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
}

.staff-card h1 {
    margin: 0 0 8px;
    font-size: 32px;
    letter-spacing: -0.05em;
}

.staff-card > p,
.staff-header p {
    color: var(--muted);
    margin-top: 0;
}

.staff-actions {
    display: grid;
    gap: 14px;
    margin: 24px 0;
}

.big-action {
    display: block;
    padding: 24px;
    border-radius: 20px;
    background: var(--primary);
    color: #fff;
    font-weight: 900;
    font-size: 21px;
    box-shadow: 0 14px 32px rgba(17, 24, 39, 0.16);
}

.big-action small {
    display: block;
    margin-top: 6px;
    font-size: 14px;
    font-weight: 600;
    opacity: 0.82;
}

.big-action.secondary {
    background: #fff;
    color: var(--text);
    border: 1px solid var(--border);
    box-shadow: none;
}

/* =========================
   RTL / LTR VALUES
========================= */

.num,
.amount,
.code,
.phone,
.id-value {
    direction: ltr;
    unicode-bidi: isolate;
    display: inline-block;
}

.rtl {
    direction: rtl;
    text-align: right;
}

.rtl .sidebar {
    border-right: 0;
    border-left: 1px solid var(--border);
}

.rtl .topbar,
.rtl .topbar-brand,
.rtl .topbar-user,
.rtl .page-head,
.rtl .staff-header {
    direction: rtl;
}

.rtl .num,
.rtl .amount,
.rtl .code,
.rtl .phone,
.rtl .id-value {
    direction: ltr;
    unicode-bidi: isolate;
}

/* =========================
   RESPONSIVE
========================= */

@media (max-width: 1050px) {
    .cards-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .two-columns {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .app-layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        border-right: 0;
        border-bottom: 1px solid var(--border);
        padding: 12px;
    }

    .sidebar nav {
        display: flex;
        overflow-x: auto;
        padding-bottom: 4px;
    }

    .sidebar a {
        white-space: nowrap;
    }

    .rtl .sidebar {
        border-left: 0;
        border-bottom: 1px solid var(--border);
    }
}

@media (max-width: 640px) {
    .topbar {
        height: auto;
        padding: 14px;
        align-items: flex-start;
        flex-direction: column;
    }

    .topbar-user {
        width: 100%;
        justify-content: space-between;
    }

    .content {
        padding: 18px;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .page-head,
    .staff-header {
        flex-direction: column;
    }

    .page-head h1,
    .staff-card h1 {
        font-size: 27px;
    }

    .auth-card {
        padding: 22px;
        border-radius: 22px;
    }

    .staff-card {
        padding: 20px;
    }
}