/* Rhino Soft 1.0.0 | framework-independent tokens and reference components.
   Core palette: #287F79 teal, #202427 graphite, #F8F7F3 ivory.
   Use semantic roles; #216C66 links preserve readable contrast on warm ivory. */
@font-face {
  font-family: "Inter";
  src: url("../fonts/Inter.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "Vazirmatn";
  src: url("../fonts/Vazirmatn.woff2") format("woff2");
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
}
:root {
  --rhs-brand-primary: #287F79;
  --rhs-brand-graphite: #202427;
  --rhs-brand-ivory: #F8F7F3;
  --rhs-brand-white: #FFFFFF;
  --rhs-brand-black: #000000;
  --rhs-brand-companion: #75C4BC;
  --rhs-brand-hover: #216C66;
  --rhs-brand-pressed: #195650;
  --rhs-brand-ink: #164F49;
  --rhs-brand-surface: #E9F4F1;
  --rhs-brand-surface-hover: #D8ECE7;
  --rhs-brand-line: #BCDAD1;
  --rhs-font-en: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --rhs-font-fa: "Vazirmatn", "Tahoma", sans-serif;
  --rhs-font-mono: ui-monospace, "SFMono-Regular", Consolas, monospace;
  --rhs-size-caption: 0.75rem;
  --rhs-size-small: 0.875rem;
  --rhs-size-body: 1rem;
  --rhs-size-lead: 1.125rem;
  --rhs-size-title-sm: 1.5rem;
  --rhs-size-title: 2rem;
  --rhs-size-display: 3rem;
  --rhs-weight-regular: 400;
  --rhs-weight-medium: 500;
  --rhs-weight-semibold: 600;
  --rhs-weight-bold: 700;
  --rhs-line-body: 1.6;
  --rhs-line-fa: 1.8;
  --rhs-line-heading: 1.2;
  --rhs-space-0: 0;
  --rhs-space-1: 0.25rem;
  --rhs-space-2: 0.5rem;
  --rhs-space-3: 0.75rem;
  --rhs-space-4: 1rem;
  --rhs-space-5: 1.25rem;
  --rhs-space-6: 1.5rem;
  --rhs-space-8: 2rem;
  --rhs-space-10: 2.5rem;
  --rhs-space-12: 3rem;
  --rhs-space-16: 4rem;
  --rhs-space-20: 5rem;
  --rhs-space-24: 6rem;
  --rhs-radius-small: 0.25rem;
  --rhs-radius-badge: 0.375rem;
  --rhs-radius-control: 0.625rem;
  --rhs-radius-card: 1rem;
  --rhs-radius-dialog: 1.5rem;
  --rhs-radius-pill: 999px;
  --rhs-motion-fast: 120ms;
  --rhs-motion-standard: 180ms;
  --rhs-motion-slow: 240ms;
  --rhs-motion-ease: cubic-bezier(0.2, 0, 0, 1);
  --rhs-size-control: 2.75rem;
  --rhs-size-control-compact: 2.5rem;
  --rhs-size-control-large: 3rem;
  --rhs-size-icon: 1.25rem;
  --rhs-size-container: 80rem;
  --rhs-size-reading: 44rem;
  --rhs-size-sidebar: 16rem;
}
:root, [data-theme="light"] {
  color-scheme: light;
  --rhs-bg-page: #F8F7F3;
  --rhs-bg-surface: #FFFFFF;
  --rhs-bg-subtle: #F0F4F1;
  --rhs-bg-raised: #FFFFFF;
  --rhs-text-primary: #202427;
  --rhs-text-muted: #52615B;
  --rhs-text-subtle: #61716A;
  --rhs-text-inverse: #FFFFFF;
  --rhs-border-subtle: #DDE5E0;
  --rhs-border-control: #72827B;
  --rhs-border-brand: #BCDAD1;
  --rhs-action-primary: #287F79;
  --rhs-action-primary-hover: #216C66;
  --rhs-action-primary-pressed: #195650;
  --rhs-action-on-primary: #FFFFFF;
  --rhs-action-link: #216C66;
  --rhs-action-link-hover: #195650;
  --rhs-accent-surface: #E9F4F1;
  --rhs-accent-surface-hover: #D8ECE7;
  --rhs-accent-text: #164F49;
  --rhs-focus-ring: #287F79;
  --rhs-focus-gap: #FFFFFF;
  --rhs-disabled-bg: #EDF1EE;
  --rhs-disabled-text: #65766D;
  --rhs-disabled-border: #CCD7D0;
  --rhs-status-success-text: #176346;
  --rhs-status-success-bg: #E8F5ED;
  --rhs-status-warning-text: #7A4A00;
  --rhs-status-warning-bg: #FFF2D6;
  --rhs-status-danger-text: #B42339;
  --rhs-status-danger-bg: #FDEBF0;
  --rhs-status-info-text: #245EA8;
  --rhs-status-info-bg: #EAF2FF;
  --rhs-shadow-card: 0 4px 20px rgb(32 36 39 / 5%);
  --rhs-shadow-overlay: 0 20px 60px rgb(32 36 39 / 16%);
}
[data-theme="dark"] {
  color-scheme: dark;
  --rhs-bg-page: #141C1A;
  --rhs-bg-surface: #1C2925;
  --rhs-bg-subtle: #18221F;
  --rhs-bg-raised: #26362F;
  --rhs-text-primary: #F8F7F3;
  --rhs-text-muted: #B9C8C1;
  --rhs-text-subtle: #A5B7AE;
  --rhs-text-inverse: #202427;
  --rhs-border-subtle: #3E5249;
  --rhs-border-control: #82998D;
  --rhs-border-brand: #456E62;
  --rhs-action-primary: #75C4BC;
  --rhs-action-primary-hover: #93D4CB;
  --rhs-action-primary-pressed: #AFE2D9;
  --rhs-action-on-primary: #123833;
  --rhs-action-link: #75C4BC;
  --rhs-action-link-hover: #93D4CB;
  --rhs-accent-surface: #1E4640;
  --rhs-accent-surface-hover: #29584F;
  --rhs-accent-text: #C6E9E2;
  --rhs-focus-ring: #75C4BC;
  --rhs-focus-gap: #1C2925;
  --rhs-disabled-bg: #30443A;
  --rhs-disabled-text: #A5B7AE;
  --rhs-disabled-border: #5A7365;
  --rhs-status-success-text: #91DDB6;
  --rhs-status-success-bg: #18382B;
  --rhs-status-warning-text: #F7CF75;
  --rhs-status-warning-bg: #3C3019;
  --rhs-status-danger-text: #FFAFB8;
  --rhs-status-danger-bg: #461F2A;
  --rhs-status-info-text: #ACCEFF;
  --rhs-status-info-bg: #1D304A;
  --rhs-shadow-card: 0 4px 20px rgb(0 0 0 / 16%);
  --rhs-shadow-overlay: 0 20px 60px rgb(0 0 0 / 40%);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --rhs-bg-page: #141C1A;
    --rhs-bg-surface: #1C2925;
    --rhs-bg-subtle: #18221F;
    --rhs-bg-raised: #26362F;
    --rhs-text-primary: #F8F7F3;
    --rhs-text-muted: #B9C8C1;
    --rhs-text-subtle: #A5B7AE;
    --rhs-text-inverse: #202427;
    --rhs-border-subtle: #3E5249;
    --rhs-border-control: #82998D;
    --rhs-border-brand: #456E62;
    --rhs-action-primary: #75C4BC;
    --rhs-action-primary-hover: #93D4CB;
    --rhs-action-primary-pressed: #AFE2D9;
    --rhs-action-on-primary: #123833;
    --rhs-action-link: #75C4BC;
    --rhs-action-link-hover: #93D4CB;
    --rhs-accent-surface: #1E4640;
    --rhs-accent-surface-hover: #29584F;
    --rhs-accent-text: #C6E9E2;
    --rhs-focus-ring: #75C4BC;
    --rhs-focus-gap: #1C2925;
    --rhs-disabled-bg: #30443A;
    --rhs-disabled-text: #A5B7AE;
    --rhs-disabled-border: #5A7365;
    --rhs-status-success-text: #91DDB6;
    --rhs-status-success-bg: #18382B;
    --rhs-status-warning-text: #F7CF75;
    --rhs-status-warning-bg: #3C3019;
    --rhs-status-danger-text: #FFAFB8;
    --rhs-status-danger-bg: #461F2A;
    --rhs-status-info-text: #ACCEFF;
    --rhs-status-info-bg: #1D304A;
    --rhs-shadow-card: 0 4px 20px rgb(0 0 0 / 16%);
    --rhs-shadow-overlay: 0 20px 60px rgb(0 0 0 / 40%);
  }
}

/* Keep mixed-language content direction in HTML; do not mirror the logo. */
.rhs-app { margin: 0; background: var(--rhs-bg-page); color: var(--rhs-text-primary); font-family: var(--rhs-font-en); font-size: var(--rhs-size-body); line-height: var(--rhs-line-body); accent-color: var(--rhs-action-primary); }
.rhs-app, .rhs-app * { box-sizing: border-box; }
.rhs-app:lang(fa), .rhs-app [lang|="fa"] { font-family: var(--rhs-font-fa); line-height: var(--rhs-line-fa); letter-spacing: 0; }
.rhs-app:lang(fa) :where(h1,h2,h3,h4), .rhs-app [lang|="fa"] :where(h1,h2,h3,h4) { line-height: 1.4; letter-spacing: 0; }
.rhs-app :where(button,input,select,textarea) { font: inherit; }
.rhs-app :where(button,a,input,select,textarea,summary,[tabindex]) { scroll-margin-block: 6rem; }
.rhs-app :where(a,button,input,select,textarea,summary,[tabindex]):focus-visible { outline: 3px solid var(--rhs-focus-ring); outline-offset: 3px; box-shadow: 0 0 0 3px var(--rhs-focus-gap); }
.rhs-app :where(a) { color: var(--rhs-action-link); text-underline-offset: 0.2em; text-decoration-thickness: 0.08em; }
.rhs-app :where(a:hover) { color: var(--rhs-action-link-hover); }
.rhs-app :where(h1,h2,h3,h4) { margin-block: 0 var(--rhs-space-4); font-weight: 600; line-height: var(--rhs-line-heading); letter-spacing: -0.02em; }
.rhs-app :where(h1) { font-size: var(--rhs-size-title); }
.rhs-app :where(h2) { font-size: var(--rhs-size-title-sm); }
.rhs-app :where(p) { margin-block: 0 var(--rhs-space-4); }
.rhs-app :where(img,svg) { max-inline-size: 100%; }
.rhs-container { inline-size: min(100% - 2rem, var(--rhs-size-container)); margin-inline: auto; }
.rhs-stack { display: flex; flex-direction: column; gap: var(--rhs-space-4); }
.rhs-row { display: flex; align-items: center; flex-wrap: wrap; gap: var(--rhs-space-3); }
.rhs-muted { color: var(--rhs-text-muted); }
.rhs-small { font-size: var(--rhs-size-small); }
.rhs-ltr { direction: ltr; unicode-bidi: isolate; }
.rhs-numeric { font-variant-numeric: tabular-nums; }
.rhs-display { font-size: clamp(2.25rem, 5vw, var(--rhs-size-display)); font-weight: 600; }
.rhs-card { background: var(--rhs-bg-surface); border: 1px solid var(--rhs-border-subtle); border-radius: var(--rhs-radius-card); padding: var(--rhs-space-6); box-shadow: var(--rhs-shadow-card); }
.rhs-brand-panel { background: var(--rhs-accent-surface); color: var(--rhs-accent-text); border: 1px solid var(--rhs-border-brand); border-radius: var(--rhs-radius-card); padding: var(--rhs-space-6); }
.rhs-button { display: inline-flex; align-items: center; justify-content: center; gap: var(--rhs-space-2); min-block-size: var(--rhs-size-control); min-inline-size: var(--rhs-size-control); padding-block: 0.625rem; padding-inline: 1.125rem; border: 1px solid transparent; border-radius: var(--rhs-radius-control); background: var(--rhs-action-primary); color: var(--rhs-action-on-primary); font-weight: 600; font-size: var(--rhs-size-small); line-height: 1.35; text-decoration: none; cursor: pointer; transition: background-color var(--rhs-motion-standard) var(--rhs-motion-ease), border-color var(--rhs-motion-standard) var(--rhs-motion-ease), color var(--rhs-motion-standard) var(--rhs-motion-ease); }
.rhs-button:hover { background: var(--rhs-action-primary-hover); color: var(--rhs-action-on-primary); }
.rhs-button:active { background: var(--rhs-action-primary-pressed); }
.rhs-button--secondary { background: var(--rhs-bg-surface); color: var(--rhs-action-link); border-color: var(--rhs-border-control); }
.rhs-button--secondary:hover { background: var(--rhs-accent-surface); color: var(--rhs-accent-text); border-color: var(--rhs-action-link); }
.rhs-button--secondary:active { background: var(--rhs-accent-surface-hover); }
.rhs-button--quiet { background: transparent; color: var(--rhs-action-link); }
.rhs-button--quiet:hover { background: var(--rhs-accent-surface); color: var(--rhs-accent-text); }
.rhs-button--quiet:active { background: var(--rhs-accent-surface-hover); color: var(--rhs-accent-text); }
.rhs-button--danger { background: var(--rhs-status-danger-text); color: var(--rhs-status-danger-bg); }
.rhs-button--danger:hover { background: var(--rhs-status-danger-bg); color: var(--rhs-status-danger-text); border-color: var(--rhs-status-danger-text); }
.rhs-button--danger:active { background: var(--rhs-status-danger-text); color: var(--rhs-status-danger-bg); }
.rhs-button--icon { padding: 0.625rem; }
.rhs-button:disabled, .rhs-button[aria-disabled="true"] { background: var(--rhs-disabled-bg); color: var(--rhs-disabled-text); border-color: var(--rhs-disabled-border); cursor: not-allowed; }
.rhs-icon { inline-size: var(--rhs-size-icon); block-size: var(--rhs-size-icon); flex: none; stroke-width: 1.75; }
.rhs-field { display: grid; gap: var(--rhs-space-2); }
.rhs-label { display: block; color: var(--rhs-text-primary); font-size: var(--rhs-size-small); font-weight: 600; }
.rhs-input { inline-size: 100%; min-block-size: var(--rhs-size-control); border: 1px solid var(--rhs-border-control); border-radius: var(--rhs-radius-control); padding-block: 0.625rem; padding-inline: 0.875rem; color: var(--rhs-text-primary); background: var(--rhs-bg-surface); transition: border-color var(--rhs-motion-fast) var(--rhs-motion-ease); }
textarea.rhs-input { min-block-size: 7rem; resize: vertical; }
.rhs-input::placeholder { color: var(--rhs-text-subtle); opacity: 1; }
.rhs-input:hover:not(:disabled):not([aria-invalid="true"]) { border-color: var(--rhs-action-link); }
.rhs-input[aria-invalid="true"] { border: 2px solid var(--rhs-status-danger-text); }
.rhs-input:disabled { background: var(--rhs-disabled-bg); color: var(--rhs-disabled-text); border-color: var(--rhs-disabled-border); cursor: not-allowed; }
.rhs-hint { margin: 0; color: var(--rhs-text-muted); font-size: var(--rhs-size-small); }
.rhs-error { margin: 0; color: var(--rhs-status-danger-text); font-size: var(--rhs-size-small); }
.rhs-check { display: inline-flex; align-items: center; gap: var(--rhs-space-3); min-block-size: var(--rhs-size-control); padding-inline-end: var(--rhs-space-2); cursor: pointer; }
.rhs-check input { inline-size: 1.125rem; block-size: 1.125rem; margin: 0; flex: none; }
.rhs-badge { display: inline-flex; align-items: center; gap: 0.375rem; padding-block: 0.25rem; padding-inline: 0.625rem; border-radius: var(--rhs-radius-badge); background: var(--rhs-bg-subtle); color: var(--rhs-text-muted); font-size: var(--rhs-size-small); font-weight: 500; line-height: 1.4; white-space: nowrap; }
.rhs-badge--success { color: var(--rhs-status-success-text); background: var(--rhs-status-success-bg); }
.rhs-badge--warning { color: var(--rhs-status-warning-text); background: var(--rhs-status-warning-bg); }
.rhs-badge--danger { color: var(--rhs-status-danger-text); background: var(--rhs-status-danger-bg); }
.rhs-badge--info { color: var(--rhs-status-info-text); background: var(--rhs-status-info-bg); }
.rhs-alert { display: flex; align-items: flex-start; gap: var(--rhs-space-3); border-inline-start: 3px solid currentColor; border-radius: var(--rhs-radius-control); padding: var(--rhs-space-4); background: var(--rhs-status-info-bg); color: var(--rhs-status-info-text); }
.rhs-alert--danger { background: var(--rhs-status-danger-bg); color: var(--rhs-status-danger-text); }
.rhs-alert p { margin: 0; }
.rhs-nav-link { display: flex; align-items: center; gap: var(--rhs-space-3); min-block-size: var(--rhs-size-control); padding-block: 0.75rem; padding-inline: 1rem; border-radius: var(--rhs-radius-control); color: var(--rhs-text-muted); text-decoration: none; }
.rhs-nav-link:hover { background: var(--rhs-bg-subtle); color: var(--rhs-text-primary); }
.rhs-nav-link[aria-current="page"] { background: var(--rhs-accent-surface); color: var(--rhs-accent-text); font-weight: 600; box-shadow: inset 3px 0 0 currentColor; }
.rhs-nav-link[aria-current="page"]:dir(rtl) { box-shadow: inset -3px 0 0 currentColor; }
.rhs-sr-only { position: absolute; inline-size: 1px; block-size: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (prefers-reduced-motion: reduce) {
  .rhs-app *, .rhs-app *::before, .rhs-app *::after { animation: none !important; transition-duration: 0ms !important; scroll-behavior: auto !important; }
}
@media (forced-colors: active) {
  .rhs-button, .rhs-card, .rhs-brand-panel, .rhs-input, .rhs-badge { border: 1px solid CanvasText; }
  .rhs-app :where(a,button,input,select,textarea,summary,[tabindex]):focus-visible { outline: 3px solid Highlight; box-shadow: none; }
  .rhs-nav-link[aria-current="page"] { border-inline-start: 3px solid currentColor; box-shadow: none; }
}