/* =========================================================================
   نیک پرتو — Design System
   Signature: "Orbital / Detector" — an electron orbit mark (نماد اتم) paired
   with the dot-grid of a gamma-camera crystal array, and a decay-pulse
   waveform used as a section divider. Palette: deep pine + warm paper +
   a single phosphor-lime accent reserved for focus/glow moments only.
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Vazirmatn:wght@300;400;500;600;700;800&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root {
  /* ---- core palette ---- */
  --ink-900: #0e1f16;
  --ink-700: #24352b;
  --ink-500: #56695d;
  --ink-300: #90a297;

  --paper-0:   #fbfaf4;
  --paper-100: #f2f4ea;
  --paper-200: #e7ebdd;
  --surface:   #ffffff;

  --pine-900: #0a2e1e;
  --pine-800: #0e3b26;
  --pine-700: #14512f;
  --pine-600: #1a6b3c;
  --pine-500: #228048;
  --pine-400: #3a9c5e;

  --sage-100: #eaf1e2;
  --sage-200: #d7e6cc;
  --sage-300: #bcd8ab;

  --phosphor-400: #b6f24c;
  --phosphor-500: #9bdc34;
  --phosphor-glow: rgba(182, 242, 76, 0.35);

  --danger-500: #c0392f;
  --danger-100: #fbe9e7;
  --warn-500: #a9711b;
  --warn-100: #fbf1dc;
  --info-500: #2b6f8f;
  --info-100: #e4f1f6;

  /* ---- type ---- */
  --font-fa: 'Vazirmatn', Tahoma, sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, monospace;

  /* ---- shape / elevation ---- */
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 1px 2px rgba(10, 30, 20, 0.06), 0 1px 1px rgba(10,30,20,0.04);
  --shadow-md: 0 8px 24px -6px rgba(10, 30, 20, 0.16);
  --shadow-lg: 0 24px 48px -12px rgba(10, 30, 20, 0.28);
  --border-hairline: 1px solid var(--paper-200);

  /* ---- detector-grid texture (gamma-camera crystal array) ---- */
  --detector-grid:
    radial-gradient(circle at 1px 1px, rgba(14,59,38,0.10) 1px, transparent 1.6px);
}

@media (prefers-color-scheme: dark) {
  /* Intentionally kept light: clinical readability takes priority over
     matching OS theme for this product. */
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-fa);
  background: var(--paper-0);
  color: var(--ink-900);
  margin: 0;
  padding: 0;
  line-height: 1.85;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

.mono { font-family: var(--font-mono); direction: ltr; unicode-bidi: isolate; }

h1, h2, h3, h4, h5 {
  font-family: var(--font-fa);
  color: var(--pine-900);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}

a {
  color: var(--pine-600);
  text-decoration: none;
  transition: color 0.18s ease;
}
a:hover { color: var(--pine-800); }

:focus-visible {
  outline: 2.5px solid var(--phosphor-500);
  outline-offset: 2px;
  border-radius: 6px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

.container { max-width: 1180px; }

/* =========================================================================
   Orbital mark — used as brand mark, list bullets, loading motif
   ========================================================================= */
.orbit-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
}
.orbit-mark svg { display: block; }
.orbit-mark .orbit-path {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.4;
  opacity: 0.55;
}
.orbit-mark .orbit-nucleus { fill: currentColor; }
.orbit-mark .orbit-electron {
  fill: var(--phosphor-400);
  transform-box: fill-box;
  transform-origin: center;
  animation: orbit-spin 6s linear infinite;
}
@keyframes orbit-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

/* =========================================================================
   Navbar
   ========================================================================= */
.navbar {
  background: var(--pine-900) !important;
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
  padding: 0.75rem 0;
}
.navbar-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 800;
  font-size: 1.3rem;
  color: #fdfdf7 !important;
  letter-spacing: -0.01em;
}
.navbar-brand .orbit-mark { color: var(--phosphor-400); }
.navbar-brand small {
  display: block;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  color: rgba(255,255,255,0.5);
  text-transform: uppercase;
}
.navbar .nav-link {
  color: rgba(255,255,255,0.82) !important;
  font-weight: 500;
  font-size: 0.94rem;
  margin: 0 0.15rem;
  border-radius: 9px;
  padding: 0.5rem 0.95rem !important;
  position: relative;
  transition: background 0.18s ease, color 0.18s ease;
}
.navbar .nav-link:hover { background: rgba(255,255,255,0.08); color: #fff !important; }
.navbar .nav-link.active {
  color: #fff !important;
  background: rgba(182, 242, 76, 0.12);
}
.navbar .nav-link.active::after {
  content: '';
  position: absolute;
  right: 0.95rem; left: 0.95rem; bottom: 0.28rem;
  height: 2px;
  background: var(--phosphor-400);
  border-radius: 2px;
}
.navbar-toggler { border: none; box-shadow: none !important; }
.navbar-toggler-icon {
  filter: invert(1);
}

/* =========================================================================
   Buttons
   ========================================================================= */
.btn {
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.94rem;
  padding: 0.62rem 1.35rem;
  border: 1.5px solid transparent;
  transition: transform 0.14s ease, box-shadow 0.14s ease, background 0.14s ease, border-color .14s ease, color .14s ease;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--pine-600);
  border-color: var(--pine-600);
  color: #fff;
}
.btn-primary:hover, .btn-primary:focus {
  background: var(--pine-700);
  border-color: var(--pine-700);
  color: #fff;
}

.btn-outline-primary {
  border-color: var(--pine-500);
  color: var(--pine-700);
  background: transparent;
}
.btn-outline-primary:hover {
  background: var(--pine-600);
  border-color: var(--pine-600);
  color: #fff;
}

.btn-secondary {
  background: var(--sage-100);
  border-color: var(--sage-100);
  color: var(--pine-800);
}
.btn-secondary:hover { background: var(--sage-200); border-color: var(--sage-200); color: var(--pine-900); }

.btn-danger {
  background: var(--danger-500);
  border-color: var(--danger-500);
}
.btn-danger:hover { background: #a32e25; border-color: #a32e25; }

.btn-light { background: rgba(255,255,255,0.92); border-color: transparent; color: var(--pine-800); }
.btn-light:hover { background: #fff; }

.btn-sm { padding: 0.4rem 0.85rem; font-size: 0.84rem; border-radius: 8px; }

/* =========================================================================
   Forms
   ========================================================================= */
.form-control, .form-select {
  border-radius: 10px;
  border: 1.5px solid var(--paper-200);
  background: var(--surface);
  padding: 0.68rem 1rem;
  font-family: var(--font-fa);
  color: var(--ink-900);
  transition: border-color 0.16s ease, box-shadow 0.16s ease;
}
.form-control:focus, .form-select:focus {
  border-color: var(--pine-500);
  box-shadow: 0 0 0 4px rgba(34,128,72,0.13);
}
.form-label { font-weight: 600; color: var(--ink-700); font-size: 0.92rem; margin-bottom: 0.4rem; }
.form-text.text-muted { color: var(--ink-500) !important; font-size: 0.82rem; }
.text-danger { color: var(--danger-500) !important; font-size: 0.85rem; margin-top: 0.3rem; }
.form-check-input:checked { background-color: var(--pine-600); border-color: var(--pine-600); }
.form-check-input:focus { box-shadow: 0 0 0 3px rgba(34,128,72,0.15); }

/* auth cards */
.auth-shell {
  max-width: 440px;
  margin: 2.5rem auto;
}
.auth-card {
  background: var(--surface);
  border: var(--border-hairline);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 2.4rem 2.2rem;
  position: relative;
  overflow: hidden;
}
.auth-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: var(--detector-grid);
  background-size: 16px 16px;
  -webkit-mask-image: linear-gradient(to bottom, black, transparent 40%);
  mask-image: linear-gradient(to bottom, black, transparent 40%);
  opacity: 0.5;
  pointer-events: none;
}
.auth-card > * { position: relative; z-index: 1; }
.auth-card .orbit-mark { color: var(--pine-700); margin-bottom: 0.75rem; }
.auth-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--pine-500);
  margin-bottom: 0.35rem;
}
.auth-card h2 { margin-bottom: 0.3rem; }
.auth-sub { color: var(--ink-500); font-size: 0.92rem; margin-bottom: 1.6rem; }
.auth-foot { text-align: center; margin-top: 1.4rem; font-size: 0.9rem; color: var(--ink-500); }

/* =========================================================================
   Cards
   ========================================================================= */
.card {
  border: var(--border-hairline);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color .22s ease;
  overflow: hidden;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--sage-300);
}
.card-img-top { height: 190px; object-fit: cover; }
.card-body { padding: 1.4rem 1.5rem; }
.card-title { font-weight: 700; font-size: 1.12rem; color: var(--pine-900); margin-bottom: 0.6rem; }

/* scan card meta */
.scan-card .card-body { display: flex; flex-direction: column; gap: 0.7rem; }
.scan-card .scan-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--pine-500);
  text-transform: uppercase;
}
.scan-card .card-excerpt {
  color: var(--ink-500);
  font-size: 0.92rem;
  line-height: 1.7;
  flex: 1;
}
.scan-card-noimg {
  height: 190px;
  display: flex; align-items: center; justify-content: center;
  background: var(--pine-900);
  background-image: var(--detector-grid);
  background-size: 14px 14px;
}
.scan-card-noimg .orbit-mark { color: var(--phosphor-400); opacity: 0.85; }

/* =========================================================================
   Tables
   ========================================================================= */
.table {
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: var(--border-hairline);
}
.table thead th {
  background: var(--pine-900);
  color: rgba(255,255,255,0.92);
  font-weight: 600;
  font-size: 0.86rem;
  border-bottom: none;
  padding: 0.9rem 1rem;
}
.table td, .table th { padding: 0.95rem 1rem; vertical-align: middle; border-color: var(--paper-200); }
.table-striped > tbody > tr:nth-of-type(odd) > * { background-color: var(--paper-100); }
.table tbody tr:hover { background-color: var(--sage-100); }

/* =========================================================================
   Alerts
   ========================================================================= */
.alert {
  border-radius: var(--radius-sm);
  border: none;
  padding: 0.95rem 1.2rem;
  box-shadow: var(--shadow-sm);
  font-size: 0.92rem;
}
.alert-success { background: var(--sage-100); color: var(--pine-800); border-inline-start: 4px solid var(--pine-500); }
.alert-danger  { background: var(--danger-100); color: var(--danger-500); border-inline-start: 4px solid var(--danger-500); }
.alert-warning { background: var(--warn-100); color: var(--warn-500); border-inline-start: 4px solid var(--warn-500); }
.alert-info    { background: var(--info-100); color: var(--info-500); border-inline-start: 4px solid var(--info-500); }

/* =========================================================================
   Badges
   ========================================================================= */
.badge { font-weight: 600; font-size: 0.75rem; padding: 0.4em 0.75em; border-radius: 7px; }
.bg-success { background: var(--pine-500) !important; }
.bg-warning { background: #e4b94a !important; }
.bg-danger  { background: var(--danger-500) !important; }
.bg-secondary { background: var(--ink-300) !important; }

/* =========================================================================
   Hero
   ========================================================================= */
.hero-section {
  position: relative;
  border-radius: var(--radius-lg);
  padding: 3.4rem 2.6rem;
  margin-bottom: 1.2rem;
  overflow: hidden;
  background: var(--pine-900);
  color: #fdfdf7;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2rem;
  align-items: center;
}
.hero-section::before {
  content: '';
  position: absolute; inset: 0;
  background-image: var(--detector-grid);
  background-size: 18px 18px;
  opacity: 0.5;
}
.hero-text { position: relative; z-index: 1; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--phosphor-400);
  background: rgba(182,242,76,0.09);
  border: 1px solid rgba(182,242,76,0.25);
  padding: 0.35rem 0.8rem;
  border-radius: 99px;
  margin-bottom: 1.1rem;
}
.hero-section h1 {
  color: #fdfdf7;
  font-size: 2.3rem;
  font-weight: 800;
  line-height: 1.5;
  max-width: 20ch;
}
.hero-section p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.72);
  max-width: 46ch;
  margin-bottom: 1.6rem;
}
.hero-cta { display: flex; gap: 0.8rem; flex-wrap: wrap; }
.hero-visual {
  position: relative; z-index: 1;
  display: flex; align-items: center; justify-content: center;
  aspect-ratio: 1 / 1;
}
.hero-stats {
  position: relative; z-index: 1;
  display: flex; gap: 1.8rem;
  margin-top: 2rem;
  padding-top: 1.6rem;
  border-top: 1px solid rgba(255,255,255,0.14);
}
.hero-stats .stat b {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.4rem;
  color: var(--phosphor-400);
}
.hero-stats .stat span {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.6);
}

/* decay-pulse divider */
.pulse-divider {
  display: block;
  width: 100%;
  height: 34px;
  margin: 2.2rem 0;
  color: var(--sage-300);
}

/* =========================================================================
   Feature grid (homepage "why us")
   ========================================================================= */
.feature-card {
  padding: 1.7rem 1.5rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: var(--border-hairline);
  height: 100%;
}
.feature-card .orbit-mark { color: var(--pine-600); margin-bottom: 0.9rem; }
.feature-card h5 { font-size: 1.02rem; margin-bottom: 0.5rem; }
.feature-card p { color: var(--ink-500); font-size: 0.9rem; margin: 0; }

/* section headings */
.section-heading { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 1.4rem; }
.section-heading h2 { margin: 0; font-size: 1.5rem; }
.section-heading .section-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pine-500);
}

/* =========================================================================
   Dashboard stat cards
   ========================================================================= */
.stat-card {
  border-radius: var(--radius);
  padding: 1.5rem;
  color: #fff;
  background: var(--pine-800);
  box-shadow: var(--shadow-md);
  transition: transform 0.18s ease;
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute; inset: 0;
  background-image: var(--detector-grid);
  background-size: 14px 14px;
  opacity: 0.35;
}
.stat-card > * { position: relative; z-index: 1; }
.stat-card:hover { transform: translateY(-3px); }
.stat-card .number { font-family: var(--font-mono); font-size: 2.2rem; font-weight: 600; margin-bottom: 0.3rem; }
.stat-card .label { font-size: 0.92rem; opacity: 0.85; }
.stat-card.bg-primary { background: var(--pine-800) !important; }
.stat-card.bg-success { background: var(--pine-600) !important; }
.stat-card.bg-warning { background: #8a6a22 !important; color: #fff !important; }
.stat-card.bg-danger  { background: #7c2c24 !important; }

/* quick-link list (dashboard) */
.list-group-item {
  border: var(--border-hairline);
  padding: 1rem 1.2rem;
  font-weight: 500;
  color: var(--ink-700);
  transition: background 0.16s ease, color 0.16s ease, padding-inline-start .16s ease;
}
.list-group-item:first-child { border-top-left-radius: var(--radius); border-top-right-radius: var(--radius); }
.list-group-item:last-child { border-bottom-left-radius: var(--radius); border-bottom-right-radius: var(--radius); }
.list-group-item-action:hover {
  background: var(--sage-100);
  color: var(--pine-800);
  padding-inline-start: 1.5rem;
}

/* =========================================================================
   Content / article
   ========================================================================= */
.content {
  background: var(--surface);
  padding: 2.2rem;
  border-radius: var(--radius-lg);
  border: var(--border-hairline);
  box-shadow: var(--shadow-sm);
  line-height: 2;
}
.content img { max-width: 100%; border-radius: 10px; }
.article-meta {
  display: flex; gap: 1rem; flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--pine-500);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 1.4rem;
}

/* =========================================================================
   Footer
   ========================================================================= */
footer {
  background: var(--pine-900);
  color: rgba(255,255,255,0.75);
  padding: 2.2rem 0;
  margin-top: 3.5rem;
  position: relative;
  overflow: hidden;
}
footer::before {
  content: '';
  position: absolute; inset: 0;
  background-image: var(--detector-grid);
  background-size: 16px 16px;
  opacity: 0.3;
}
footer .container { position: relative; z-index: 1; text-align: center; }
footer .orbit-mark { color: var(--phosphor-400); margin-bottom: 0.6rem; }
footer p { margin: 0; font-size: 0.86rem; }
footer a { color: var(--sage-300); }

/* =========================================================================
   Select2 override
   ========================================================================= */
.select2-container--default .select2-selection--single {
  height: 47px;
  border: 1.5px solid var(--paper-200);
  border-radius: 10px;
  padding: 0.5rem;
  line-height: 2;
}
.select2-container--default .select2-selection--single .select2-selection__arrow { height: 45px; }
.select2-container--default.select2-container--focus .select2-selection--single { border-color: var(--pine-500); }

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 767px) {
  .hero-section { grid-template-columns: 1fr; padding: 2.2rem 1.4rem; text-align: center; }
  .hero-text { display: flex; flex-direction: column; align-items: center; }
  .hero-cta { justify-content: center; }
  .hero-stats { justify-content: center; flex-wrap: wrap; }
  .hero-visual { order: -1; max-width: 220px; margin: 0 auto; }
  .section-heading { flex-direction: column; align-items: flex-start; gap: 0.3rem; }
}