/* OPERIX application shell: restrained enterprise UI with explicit RTL/LTR rules. */
:root {
    color-scheme: light;
    --page: #f5f7fa;
    --surface: #ffffff;
    --surface-soft: #f8fafc;
    --ink: #17283b;
    --ink-secondary: #40546a;
    --ink-muted: #65768a;
    --line: #dce4ec;
    --line-strong: #c6d1dc;
    --brand: #17566b;
    --brand-strong: #104456;
    --brand-soft: #eaf2f5;
    --focus: #246fc5;
    --danger: #a92e3a;
    --sidebar-width: 258px;
    --topbar-height: 72px;
    --radius: 10px;
    font-family: Tajawal, Inter, sans-serif;
    font-synthesis: none;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-variant-numeric: tabular-nums;
}

*, *::before, *::after { box-sizing: border-box; }
html { min-width: 320px; scroll-behavior: smooth; }
body { margin: 0; min-height: 100vh; background: var(--page); color: var(--ink); }
body, button, input, select, textarea { font-family: Tajawal, Inter, sans-serif; }
button, input, select, textarea { font-size: 1rem; }
a { color: var(--brand); }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--focus) 55%, transparent);
    outline-offset: 2px;
}

/* Cairo anchors Arabic hierarchy; Inter is used for English labels and data. */
[lang="ar"] h1, [lang="ar"] h2, [lang="ar"] h3, [lang="ar"] .brand-copy strong,
[lang="ar"] .page-heading h1 { font-family: Cairo, Tajawal, sans-serif; }
[lang="en"] body, [lang="en"] h1, [lang="en"] h2, [lang="en"] h3,
[lang="en"] button, [lang="en"] input, [lang="en"] select, [lang="en"] textarea {
    font-family: Inter, sans-serif;
}
.mono, code, kbd, .serial-number, [data-numeric], input[type="password"] {
    font-family: "JetBrains Mono", ui-monospace, monospace;
    font-variant-numeric: tabular-nums;
}
.serial-number, [data-numeric] { direction: ltr; unicode-bidi: isolate; }

.skip-link {
    position: fixed; z-index: 1000; inset-block-start: 8px; inset-inline-start: 8px;
    transform: translateY(-150%); padding: 9px 13px; background: var(--ink); color: white;
    border-radius: 6px; text-decoration: none;
}
.skip-link:focus { transform: translateY(0); }

.topbar {
    position: sticky; z-index: 50; inset-block-start: 0; height: var(--topbar-height);
    display: grid; grid-template-columns: minmax(210px, 1fr) auto minmax(210px, 1fr);
    align-items: center; gap: 24px; padding-inline: 28px;
    background: var(--surface); border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; width: fit-content; align-items: center; gap: 11px; color: var(--ink); text-decoration: none; }
.brand-mark {
    display: grid; width: 39px; height: 39px; place-items: center; border-radius: 8px;
    color: white; background: var(--brand); font: 700 23px/1 Cairo, sans-serif;
}
.brand-copy { display: grid; gap: 1px; }
.brand-copy strong { font-size: 17px; line-height: 1.2; }
.brand-copy small { color: var(--ink-muted); font-size: 11px; white-space: nowrap; }
.top-links { display: flex; align-items: center; gap: 8px; }
.top-link { padding: 9px 11px; color: var(--ink-secondary); font-size: 13px; font-weight: 600; text-decoration: none; white-space: nowrap; }
.top-link:hover, .top-link.is-active { color: var(--brand-strong); background: var(--brand-soft); border-radius: 6px; }
.top-actions { justify-self: end; display: flex; align-items: center; gap: 15px; }
.primary-action {
    display: inline-flex; min-height: 39px; align-items: center; justify-content: center; gap: 7px;
    padding: 8px 13px; border: 1px solid var(--brand); border-radius: 6px;
    background: var(--brand); color: #fff; font-size: 13px; font-weight: 700; text-decoration: none;
}
.primary-action:hover { background: var(--brand-strong); border-color: var(--brand-strong); }
.primary-action span { font: 500 19px/1 Inter, sans-serif; }
.language-switch { display: inline-flex; align-items: center; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.language-switch a {
    min-width: 39px; padding: 7px 8px; color: var(--ink-secondary); text-align: center;
    font: 600 11px Inter, sans-serif; text-decoration: none;
}
.language-switch a + a { border-inline-start: 1px solid var(--line); }
.language-switch a[aria-current="true"] { color: var(--brand-strong); background: var(--brand-soft); }
.sidebar-toggle { display: none !important; }

.shell-layout { display: flex; min-height: calc(100vh - var(--topbar-height)); }
.sidebar {
    position: fixed; z-index: 40; inset-block: var(--topbar-height) 0; inset-inline-start: 0;
    display: flex; width: var(--sidebar-width); flex-direction: column; padding: 23px 15px 14px;
    overflow-y: auto; background: var(--surface); border-inline-end: 1px solid var(--line);
}
[dir="rtl"] .sidebar { inset-inline-start: auto; inset-inline-end: 0; }
.sidebar-heading { padding: 0 11px 12px; color: var(--ink-muted); font-size: 11px; font-weight: 700; }
.side-navigation { display: grid; gap: 3px; }
.side-link {
    display: flex; min-height: 42px; align-items: center; gap: 11px; padding: 8px 11px;
    border-radius: 6px; color: var(--ink-secondary); font-size: 14px; font-weight: 600; text-decoration: none;
}
.side-link:hover { background: var(--surface-soft); color: var(--brand-strong); }
.side-link.is-active { background: var(--brand-soft); color: var(--brand-strong); }
.nav-indicator { width: 6px; height: 6px; flex: 0 0 6px; border: 1px solid #78909c; border-radius: 50%; }
.side-link.is-active .nav-indicator { border-color: var(--brand); background: var(--brand); }
.sidebar-bottom { margin-block-start: auto; padding-block-start: 18px; border-block-start: 1px solid var(--line); }
.account-card { display: flex; min-width: 0; align-items: center; gap: 10px; padding: 8px 5px 13px; }
.avatar { display: grid; width: 35px; height: 35px; flex: 0 0 35px; place-items: center; border: 1px solid var(--line); border-radius: 50%; background: var(--surface-soft); color: var(--brand-strong); font-size: 16px; font-weight: 700; }
.account-copy { display: grid; min-width: 0; gap: 2px; }
.account-copy strong { overflow: hidden; color: var(--ink); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.account-copy small { color: var(--ink-muted); font-size: 11px; }
.logout-link { display: block; padding: 8px 5px; color: var(--danger); font-size: 12px; font-weight: 700; text-decoration: none; }
.logout-link:hover { text-decoration: underline; }
.sidebar-scrim { display: none; }

.main-content { width: calc(100% - var(--sidebar-width)); min-width: 0; margin-inline-start: var(--sidebar-width); padding: 30px clamp(18px, 3vw, 42px) 50px; }
[dir="rtl"] .main-content { margin-inline-start: 0; margin-inline-end: var(--sidebar-width); }
.page-heading { display: flex; min-height: 73px; align-items: center; justify-content: space-between; margin-block-end: 20px; }
.page-heading h1 { margin: 0; color: var(--ink); font-size: clamp(22px, 2.4vw, 29px); font-weight: 700; line-height: 1.35; }
.eyebrow { margin: 0 0 3px; color: var(--ink-muted); font-size: 12px; font-weight: 600; }
.page-body { min-width: 0; }

/* Shared, quiet defaults for form and table components inside layout content. */
.page-body table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.page-body th { color: var(--ink-secondary); background: var(--surface-soft); font-weight: 700; text-align: start; }
.page-body th, .page-body td { padding: 11px 12px; border-bottom: 1px solid var(--line); }
.page-body input, .page-body select, .page-body textarea {
    max-width: 100%; border: 1px solid var(--line-strong); border-radius: 6px;
    background: var(--surface); color: var(--ink); padding: 9px 11px;
}
.page-body input::placeholder, .page-body textarea::placeholder { color: #65768a; opacity: 1; }
.page-body button { cursor: pointer; }

@media (max-width: 1040px) {
    .topbar { grid-template-columns: minmax(185px, 1fr) auto minmax(175px, 1fr); gap: 10px; padding-inline: 18px; }
    .top-links { gap: 0; }
    .top-link { padding-inline: 8px; font-size: 12px; }
    .brand-copy small { max-width: 155px; overflow: hidden; text-overflow: ellipsis; }
}
@media (max-width: 760px) {
    :root { --topbar-height: 62px; --sidebar-width: 280px; }
    .topbar { display: flex; gap: 10px; padding-inline: 13px; }
    .sidebar-toggle { display: inline-grid !important; width: 38px; height: 38px; flex: 0 0 38px; }
    .icon-button { place-items: center; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); color: var(--ink); font-size: 17px; }
    .brand { gap: 8px; }
    .brand-mark { width: 34px; height: 34px; font-size: 20px; }
    .brand-copy strong { font-size: 15px; }
    .brand-copy small { max-width: 125px; font-size: 9px; }
    .top-links { display: none; }
    .top-actions { margin-inline-start: auto; gap: 8px; }
    .primary-action { min-height: 36px; padding: 7px 9px; font-size: 11px; }
    .language-switch a { min-width: 34px; padding-inline: 6px; }
    .sidebar { z-index: 70; transform: translateX(-105%); transition: transform 180ms ease; box-shadow: 0 8px 28px #17283b20; }
    [dir="rtl"] .sidebar { transform: translateX(105%); }
    .sidebar-open .sidebar { transform: translateX(0); }
    .sidebar-scrim { position: fixed; z-index: 60; inset: var(--topbar-height) 0 0; background: rgb(18 34 47 / 42%); }
    .sidebar-open .sidebar-scrim { display: block; }
    .main-content, [dir="rtl"] .main-content { width: 100%; margin: 0; padding: 23px 15px 38px; }
    .page-heading { min-height: 59px; margin-block-end: 14px; }
}
@media (max-width: 420px) {
    .brand-copy small { display: none; }
    .primary-action { font-size: 0; gap: 2px; }
    .primary-action span { font-size: 21px; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* Standalone sign-in screens. */
.auth-page {
    display: grid; min-height: 100vh; place-items: center; padding: 24px;
    background: radial-gradient(ellipse at 50% 0%, #e5eef2 0, var(--page) 58%);
}
.auth-card, .welcome-card {
    position: relative; width: min(100%, 440px); padding: 38px;
    border: 1px solid var(--line); border-radius: 12px; background: var(--surface);
    box-shadow: 0 18px 55px rgb(23 40 59 / 9%);
}
.welcome-card { width: min(100%, 600px); text-align: center; }
.auth-language { position: absolute; inset-block-start: 18px; inset-inline-end: 20px; color: var(--brand); font: 600 13px Inter, sans-serif; text-decoration: none; }
.auth-brand-mark { display: grid; width: 48px; height: 48px; place-items: center; margin-block-end: 17px; border-radius: 10px; background: var(--brand); color: white; font: 800 25px Inter, sans-serif; }
.welcome-card .auth-brand-mark { margin-inline: auto; }
.auth-kicker { margin: 0 0 5px; color: var(--brand); font: 700 13px Inter, Tajawal, sans-serif; letter-spacing: .02em; }
.auth-card h1, .welcome-card h1 { margin: 0; color: var(--ink); font: 700 27px/1.4 Cairo, Inter, sans-serif; }
.auth-description { margin: 8px 0 22px; color: var(--ink-secondary); font-size: 15px; line-height: 1.7; }
.auth-form { display: grid; gap: 9px; }
.auth-form label { margin-block-start: 7px; color: var(--ink-secondary); font-size: 14px; font-weight: 700; }
.auth-form input { width: 100%; min-height: 46px; padding: 10px 12px; border: 1px solid var(--line-strong); border-radius: 6px; background: var(--surface); color: var(--ink); }
.auth-submit, .auth-secondary { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; padding: 10px 16px; border: 1px solid var(--brand); border-radius: 6px; background: var(--brand); color: #fff; font-weight: 700; text-decoration: none; cursor: pointer; }
.auth-submit { width: 100%; margin-block-start: 12px; }
.auth-submit:hover { border-color: var(--brand-strong); background: var(--brand-strong); }
.auth-secondary { border-color: var(--line-strong); background: var(--surface); color: var(--ink-secondary); }
.auth-error { margin-block-end: 15px; padding: 11px 13px; border: 1px solid #e8b8bd; border-radius: 6px; background: #fff4f4; color: #81252f; line-height: 1.6; }
.auth-success { margin-block-end: 15px; padding: 11px 13px; border: 1px solid #a8d8be; border-radius: 6px; background: #f0fbf4; color: #185b38; line-height: 1.6; }
.auth-footnote { margin: 18px 0 0; color: var(--ink-muted); font-size: 13px; line-height: 1.7; }
.auth-actions { display: flex; justify-content: center; gap: 10px; margin-block-start: 26px; }
@media (max-width: 520px) { .auth-card, .welcome-card { padding: 30px 22px; } .auth-card h1, .welcome-card h1 { font-size: 23px; } }