/*
 * ZHIN Phase 1 Design System
 * --------------------------
 * This stylesheet is the maintained visual source for the first public site shell.
 *
 * Design goals:
 * - Persian-first RTL without assuming every inline token is RTL.
 * - Industrial/technical visual language rather than a generic corporate landing page.
 * - No runtime dependency on external fonts, CDNs, image services, or JavaScript libraries.
 * - Accessible focus states, readable contrast, and responsive behavior from narrow mobile
 *   screens through large engineering-workstation displays.
 * - Small reusable token/component layer that is sufficient for Phase 1 without prematurely
 *   introducing a UI framework.
 *
 * Brand note:
 * The repository currently does not contain an approved ZHIN logo asset. The site therefore uses
 * a typographic ZHIN wordmark only. An official logo can replace it later without changing page
 * structure or engineering content.
 */

:root {
  color-scheme: dark;
  --bg: #081015;
  --bg-elevated: #0e171d;
  --panel: #121d24;
  --panel-strong: #17242c;
  --panel-soft: #0c151b;
  --text: #edf5f7;
  --text-soft: #aebdc3;
  --text-faint: #71838b;
  --line: #243640;
  --line-strong: #33505c;
  --accent: #4ce0ca;
  --accent-strong: #77f0df;
  --accent-soft: rgba(76, 224, 202, 0.12);
  --signal: #d5f35a;
  --warning: #ffcf66;
  --danger: #ff7d7d;
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.24);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --max-width: 1240px;
  --header-height: 74px;
  --space-1: 0.35rem;
  --space-2: 0.6rem;
  --space-3: 0.9rem;
  --space-4: 1.25rem;
  --space-5: 1.75rem;
  --space-6: 2.5rem;
  --space-7: 3.5rem;
  --space-8: 5rem;
  --font-ui: "Vazirmatn", "IRANSansX", "Segoe UI", Tahoma, Arial, sans-serif;
  --font-mono: "Cascadia Code", "SFMono-Regular", Consolas, monospace;
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg: #f4f7f6;
  --bg-elevated: #ffffff;
  --panel: #ffffff;
  --panel-strong: #edf3f1;
  --panel-soft: #f8faf9;
  --text: #102027;
  --text-soft: #52666e;
  --text-faint: #7b8c93;
  --line: #d8e2df;
  --line-strong: #b9ccc6;
  --accent: #008f7d;
  --accent-strong: #007363;
  --accent-soft: rgba(0, 143, 125, 0.09);
  --signal: #6f8500;
  --warning: #8a6500;
  --danger: #b34343;
  --shadow: 0 18px 44px rgba(20, 42, 48, 0.1);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  min-height: 100vh;
  background:
    radial-gradient(circle at 10% -10%, rgba(76, 224, 202, 0.08), transparent 34rem),
    linear-gradient(180deg, var(--bg) 0%, var(--bg) 100%);
  color: var(--text);
  font-family: var(--font-ui);
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.22;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 68%);
}

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

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

button,
a,
input,
select,
textarea {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 75%, white 25%);
  outline-offset: 3px;
}

::selection {
  background: var(--accent);
  color: #04110f;
}

.container {
  width: min(calc(100% - 32px), var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  min-height: var(--header-height);
  backdrop-filter: blur(18px);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--line) 74%, transparent);
}

.header-inner {
  min-height: var(--header-height);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-5);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  min-width: max-content;
}

.brand-wordmark {
  direction: ltr;
  display: inline-grid;
  place-items: center;
  width: 47px;
  height: 37px;
  border: 1px solid var(--line-strong);
  border-radius: 11px;
  color: var(--accent-strong);
  font-family: var(--font-mono);
  font-size: 0.91rem;
  font-weight: 800;
  letter-spacing: 0.07em;
  background: linear-gradient(135deg, var(--accent-soft), transparent);
}

.brand-copy {
  display: grid;
  line-height: 1.2;
}

.brand-copy strong {
  font-size: 0.98rem;
  font-weight: 800;
}

.brand-copy small {
  margin-top: 0.2rem;
  color: var(--text-faint);
  font-size: 0.69rem;
}

.primary-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
}

.nav-link {
  padding: 0.58rem 0.8rem;
  border-radius: 9px;
  color: var(--text-soft);
  font-size: 0.9rem;
  transition: 160ms ease;
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--text);
  background: var(--accent-soft);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.icon-button,
.menu-button {
  min-width: 42px;
  min-height: 42px;
  display: inline-grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--panel-soft);
  color: var(--text);
  cursor: pointer;
}

.menu-button {
  display: none;
}

main {
  overflow: hidden;
}

.hero {
  padding: clamp(4rem, 8vw, 7.5rem) 0 var(--space-7);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(340px, 0.85fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: var(--space-4);
  padding: 0.4rem 0.68rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-soft);
  color: var(--text-soft);
  font-size: 0.76rem;
}

.eyebrow::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 5px color-mix(in srgb, var(--signal) 16%, transparent);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: var(--space-4);
  font-size: clamp(2.55rem, 6.5vw, 5.9rem);
  line-height: 1.08;
  letter-spacing: -0.045em;
  max-width: 900px;
}

.hero h1 .accent {
  color: var(--accent-strong);
}

.lead {
  max-width: 760px;
  color: var(--text-soft);
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  line-height: 2;
}

.hero-actions,
.section-actions,
.tool-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: var(--space-5);
}

.button {
  min-height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.72rem 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  background: var(--panel);
  color: var(--text);
  font-weight: 700;
  cursor: pointer;
  transition: transform 150ms ease, border-color 150ms ease, background 150ms ease;
}

.button:hover:not(:disabled) {
  transform: translateY(-1px);
  border-color: var(--accent);
}

.button-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #061613;
}

.button-primary:hover:not(:disabled) {
  background: var(--accent-strong);
}

.button-quiet {
  background: transparent;
}

.button:disabled,
.button[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.48;
}

.hero-console {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, var(--panel-strong), var(--panel-soft));
  box-shadow: var(--shadow);
  overflow: hidden;
}

.hero-console::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(120deg, transparent, rgba(76, 224, 202, 0.06), transparent 60%);
}

.console-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--line);
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  direction: ltr;
}

.console-body {
  padding: 1.15rem;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.8rem;
}

.metric {
  min-height: 112px;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: color-mix(in srgb, var(--panel) 78%, transparent);
}

.metric small {
  display: block;
  color: var(--text-faint);
  font-size: 0.72rem;
}

.metric strong {
  display: block;
  margin-top: 0.42rem;
  color: var(--text);
  font-size: 1.05rem;
  line-height: 1.55;
}

.metric-wide {
  grid-column: 1 / -1;
}

.process-strip {
  margin-top: var(--space-5);
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.process-step {
  padding: 0.42rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-soft);
  background: var(--panel-soft);
  font-size: 0.78rem;
}

.process-arrow {
  align-self: center;
  color: var(--text-faint);
}

.section {
  padding: var(--space-7) 0;
}

.section-tight {
  padding: var(--space-6) 0;
}

.section-header {
  display: flex;
  justify-content: space-between;
  gap: var(--space-5);
  align-items: end;
  margin-bottom: var(--space-5);
}

.section-header-copy {
  max-width: 760px;
}

.section-kicker {
  margin-bottom: 0.45rem;
  color: var(--accent-strong);
  font-family: var(--font-mono);
  direction: ltr;
  text-align: right;
  font-size: 0.73rem;
  letter-spacing: 0.08em;
}

h2 {
  margin-bottom: 0.7rem;
  font-size: clamp(1.7rem, 3.5vw, 2.8rem);
  line-height: 1.25;
  letter-spacing: -0.025em;
}

h3 {
  margin-bottom: 0.6rem;
  font-size: 1.12rem;
}

.section-header p,
.card p,
.prose p {
  color: var(--text-soft);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  position: relative;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, var(--panel), var(--panel-soft));
}

.card-quiet {
  background: var(--panel-soft);
}

.card-accent {
  border-color: color-mix(in srgb, var(--accent) 44%, var(--line));
  background: linear-gradient(145deg, var(--accent-soft), var(--panel-soft));
}

.card-icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
  border-radius: 12px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 800;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.48rem;
  align-items: center;
}

.meta-chip,
.status-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.54rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-soft);
  background: var(--panel-soft);
  font-size: 0.72rem;
}

.status-chip::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--warning);
}

.status-chip[data-status="ready"]::before {
  background: var(--signal);
}

.tool-featured {
  min-height: 290px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--space-5);
  align-items: start;
}

.tool-featured .tool-index {
  direction: ltr;
  font-family: var(--font-mono);
  color: var(--text-faint);
  font-size: 0.76rem;
}

.tool-card-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.tool-card-title a:hover {
  color: var(--accent-strong);
}

.catalog-toolbar {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(180px, 260px);
  gap: 0.8rem;
  margin-bottom: 1rem;
}

.control {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel-soft);
  color: var(--text);
  padding: 0.72rem 0.9rem;
}

.control::placeholder {
  color: var(--text-faint);
}

textarea.control {
  min-height: 150px;
  resize: vertical;
}

.field {
  display: grid;
  gap: 0.45rem;
}

.field label {
  color: var(--text-soft);
  font-size: 0.82rem;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.form-grid .field-wide {
  grid-column: 1 / -1;
}

.tool-list {
  display: grid;
  gap: 0.85rem;
}

.tool-list-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 1.4rem;
  align-items: center;
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--panel);
}

.tool-list-card:hover {
  border-color: var(--line-strong);
}

.tool-list-card p {
  margin-bottom: 0.8rem;
  color: var(--text-soft);
}

.empty-state {
  padding: 2rem;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-md);
  color: var(--text-soft);
  text-align: center;
}

.page-hero {
  padding: var(--space-7) 0 var(--space-5);
}

.page-hero h1 {
  font-size: clamp(2.3rem, 6vw, 4.8rem);
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
  margin-bottom: 1.1rem;
  color: var(--text-faint);
  font-size: 0.78rem;
}

.breadcrumbs span {
  opacity: 0.55;
}

.tool-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 1.2rem;
  align-items: start;
}

.tool-main,
.tool-sidebar {
  display: grid;
  gap: 1rem;
}

.launch-panel {
  min-height: 300px;
  display: grid;
  place-items: center;
  padding: 2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(145deg, rgba(76, 224, 202, 0.08), transparent 55%),
    var(--panel-soft);
  text-align: center;
}

.launch-panel-inner {
  max-width: 640px;
}

.launch-mark {
  width: 68px;
  height: 68px;
  display: grid;
  place-items: center;
  margin: 0 auto 1rem;
  border: 1px solid var(--line-strong);
  border-radius: 18px;
  background: var(--panel);
  color: var(--accent-strong);
  font-family: var(--font-mono);
  font-weight: 800;
}

.definition-list {
  display: grid;
  gap: 0.72rem;
  margin: 0;
}

.definition-row {
  display: grid;
  grid-template-columns: 105px 1fr;
  gap: 0.8rem;
  padding-bottom: 0.72rem;
  border-bottom: 1px solid var(--line);
}

.definition-row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.definition-row dt {
  color: var(--text-faint);
  font-size: 0.76rem;
}

.definition-row dd {
  margin: 0;
  font-size: 0.86rem;
}

.capability-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.capability-tag {
  direction: ltr;
  unicode-bidi: isolate;
  padding: 0.34rem 0.55rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-soft);
  color: var(--text-soft);
  font-family: var(--font-mono);
  font-size: 0.69rem;
}

.notice {
  padding: 1rem 1.05rem;
  border: 1px solid color-mix(in srgb, var(--warning) 42%, var(--line));
  border-radius: 14px;
  background: color-mix(in srgb, var(--warning) 7%, var(--panel-soft));
  color: var(--text-soft);
}

.notice strong {
  color: var(--text);
}

.timeline {
  display: grid;
  gap: 0;
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 130px minmax(0, 1fr);
  gap: 1.2rem;
  padding: 0 0 2rem;
}

.timeline-date {
  direction: ltr;
  text-align: right;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 0.76rem;
}

.timeline-content {
  position: relative;
  padding: 0 0 0 1.2rem;
  border-left: 1px solid var(--line-strong);
}

.timeline-content::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 0.32rem;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--accent);
}

.copy-output {
  display: none;
  margin-top: 1rem;
}

.copy-output[data-visible="true"] {
  display: block;
}

.generated-report {
  direction: rtl;
  white-space: pre-wrap;
  min-height: 180px;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #061015;
  color: #e8f2f3;
  font-family: var(--font-ui);
}

.site-footer {
  margin-top: var(--space-7);
  border-top: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel-soft) 78%, transparent);
}

.footer-inner {
  min-height: 120px;
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  align-items: center;
  color: var(--text-faint);
  font-size: 0.78rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.footer-links a:hover {
  color: var(--text);
}

.muted {
  color: var(--text-faint) !important;
}

.ltr {
  direction: ltr;
  unicode-bidi: isolate;
}

.mono {
  font-family: var(--font-mono);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 980px) {
  .header-inner {
    grid-template-columns: auto 1fr auto;
  }

  .primary-nav {
    position: absolute;
    inset-inline: 16px;
    top: calc(var(--header-height) - 4px);
    display: none;
    padding: 0.7rem;
    border: 1px solid var(--line);
    border-radius: 14px;
    background: var(--bg-elevated);
    box-shadow: var(--shadow);
  }

  .primary-nav[data-open="true"] {
    display: grid;
  }

  .nav-link {
    padding: 0.78rem 0.9rem;
  }

  .menu-button {
    display: inline-grid;
  }

  .hero-grid,
  .tool-layout {
    grid-template-columns: 1fr;
  }

  .hero-console {
    max-width: 760px;
  }

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

  .tool-sidebar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .container {
    width: min(calc(100% - 22px), var(--max-width));
  }

  .brand-copy small {
    display: none;
  }

  .hero {
    padding-top: 3rem;
  }

  h1 {
    font-size: clamp(2.25rem, 13vw, 4rem);
  }

  .section-header,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .card-grid,
  .form-grid,
  .tool-sidebar {
    grid-template-columns: 1fr;
  }

  .catalog-toolbar {
    grid-template-columns: 1fr;
  }

  .tool-list-card,
  .tool-featured {
    grid-template-columns: 1fr;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }

  .timeline-date {
    text-align: right;
  }

  .definition-row {
    grid-template-columns: 88px 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}