/* ==========================================================================
   ARIS AI — Public Site Stylesheet
   Minimal, mobile-first, bilingual (EN/FA) with RTL support
   ========================================================================== */

/* ── CSS Custom Properties (brand tokens) ─────────────────────────────────── */
:root {
  --color-primary: #0d6efd;
  --color-primary-dark: #0b5ed7;
  --color-primary-light: #e8f0fe;
  --color-bg: #f4f7fc;
  --color-surface: #ffffff;
  --color-text: #1f2937;
  --color-text-muted: #6b7280;
  --color-heading: #0f172a;
  --color-border: #e2e8f0;
  --color-success: #198754;
  --color-warning: #ffc107;
  --color-danger: #dc3545;
  --color-footer-bg: #1e293b;
  --color-footer-text: #cbd5e1;
  --radius-card: 1rem;
  --radius-btn: 0.5rem;
  --shadow-card: 0 1px 3px rgba(0,0,0,0.06), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-card-hover: 0 2px 6px rgba(0,0,0,0.08), 0 8px 24px rgba(0,0,0,0.06);
  --transition-fast: 0.15s ease;
  --transition-smooth: 0.25s ease;
  --font-system: system-ui, 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
  --font-persian: 'Vazirmatn', system-ui, 'Segoe UI', sans-serif;
  --max-width: 1140px;
}

/* ── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-system);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Persian font family when RTL */
html[dir="rtl"] body {
  font-family: var(--font-persian);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-primary-dark); text-decoration: underline; }

img { max-width: 100%; height: auto; display: block; }

h1, h2, h3, h4, h5, h6 {
  color: var(--color-heading);
  line-height: 1.3;
  margin-top: 0;
}

/* ── Skip Link (accessibility) ────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 10000;
  border-radius: 0 0 var(--radius-btn) 0;
}
.skip-link:focus { top: 0; }

/* ── Navbar ───────────────────────────────────────────────────────────────── */
.navbar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 0.75rem 0;
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-heading) !important;
  text-decoration: none !important;
}

.navbar-brand img {
  width: 32px;
  height: 32px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  display: block;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-btn);
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.925rem;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  text-decoration: none;
}

.nav-links .nav-cta {
  background: var(--color-primary);
  color: #fff !important;
  margin-left: 0.5rem;
  padding: 0.4rem 1.1rem;
}
.nav-links .nav-cta:hover {
  background: var(--color-primary-dark);
  color: #fff !important;
}

/* Language toggle in nav */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0;
  margin-left: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 2rem;
  overflow: hidden;
}

.lang-toggle button {
  border: none;
  background: transparent;
  padding: 0.25rem 0.6rem;
  font-size: 0.8rem;
  cursor: pointer;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
  font-family: inherit;
}

.lang-toggle button.active {
  background: var(--color-primary);
  color: #fff;
}

/* Hamburger (mobile) */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  color: var(--color-text);
}

/* ── Container ────────────────────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ── Hero ─────────────────────────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 50%, #1e3c72 100%);
  color: #fff;
  padding: 5rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.06) 0%, transparent 60%);
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero p {
  font-size: clamp(1.05rem, 2.5vw, 1.3rem);
  opacity: 0.9;
  max-width: 640px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.6rem;
  border-radius: var(--radius-btn);
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition-fast);
  text-decoration: none;
  font-family: inherit;
  line-height: 1.4;
}

.btn-primary {
  background: #fff;
  color: #1e3c72;
  border-color: #fff;
}
.btn-primary:hover {
  background: #e8f0fe;
  color: #1e3c72;
  text-decoration: none;
}

.btn-outline-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.5);
}
.btn-outline-light:hover {
  background: rgba(255,255,255,0.12);
  border-color: #fff;
  color: #fff;
  text-decoration: none;
}

.btn-primary-solid {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.btn-primary-solid:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  color: #fff;
  text-decoration: none;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary);
  color: #fff;
  text-decoration: none;
}

.btn-lg {
  padding: 0.85rem 2rem;
  font-size: 1.1rem;
}

/* ── Section Spacing ──────────────────────────────────────────────────────── */
.section {
  padding: 4rem 0;
}

.section-alt {
  background: var(--color-surface);
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.25rem);
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.1rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ── Feature Cards ────────────────────────────────────────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: box-shadow var(--transition-smooth), transform var(--transition-smooth);
}

.feature-card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin: 0;
}

/* ── How It Works ─────────────────────────────────────────────────────────── */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 2rem;
}

.step {
  text-align: center;
  position: relative;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.step h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.step p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin: 0;
}

/* ── Pricing Cards ────────────────────────────────────────────────────────── */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  align-items: stretch;
}

.pricing-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 2.5rem 1.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  transition: box-shadow var(--transition-smooth), transform var(--transition-smooth);
}

.pricing-card:hover {
  box-shadow: var(--shadow-card-hover);
}

.pricing-card.featured {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px var(--color-primary), var(--shadow-card);
  position: relative;
}

.pricing-card.featured::before {
  content: attr(data-badge);
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--color-primary);
  color: #fff;
  padding: 0.25rem 1rem;
  border-radius: 2rem;
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
}

.pricing-name {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.pricing-unit {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
  flex: 1;
  text-align: left;
}

.pricing-features li {
  padding: 0.4rem 0;
  font-size: 0.925rem;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pricing-features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  flex-shrink: 0;
}

.pricing-card .btn {
  margin-top: auto;
}

.pricing-note {
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-top: 2rem;
}

/* ── Pricing Hero (single display) ────────────────────────────────────────── */
.pricing-hero {
  max-width: 680px;
  margin: 0 auto;
}

.pricing-hero-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 3rem 2.5rem;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition-smooth);
}

.pricing-hero-card:hover {
  box-shadow: var(--shadow-card-hover);
}

.pricing-hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  color: #fff;
  padding: 0.35rem 1.5rem;
  border-radius: 2rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.pricing-hero-low {
  margin-bottom: 0.5rem;
}

.pricing-hero-label {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  font-weight: 400;
}

.pricing-hero-amount {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
  margin: 0 0.15em;
}

.pricing-hero-avg {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.75rem;
}

.pricing-hero-desc {
  color: var(--color-text-muted);
  font-size: 0.925rem;
  margin-bottom: 1.75rem;
  line-height: 1.6;
}

.pricing-hero-features {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
  text-align: left;
  display: inline-block;
}

.pricing-hero-features li {
  padding: 0.45rem 0;
  font-size: 0.95rem;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.pricing-hero-features li::before {
  content: '✓';
  color: var(--color-success);
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

html[dir="rtl"] .pricing-hero-features {
  text-align: right;
}

/* ── CTA Banner ───────────────────────────────────────────────────────────── */
.cta-banner {
  background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
  color: #fff;
  text-align: center;
  padding: 3.5rem 0;
  border-radius: var(--radius-card);
  margin-top: 2rem;
}

.cta-banner h2 {
  color: #fff;
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
}

.cta-banner p {
  opacity: 0.9;
  margin-bottom: 1.5rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ── Blog Cards ───────────────────────────────────────────────────────────── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.blog-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  transition: box-shadow var(--transition-smooth);
}

.blog-card:hover {
  box-shadow: var(--shadow-card-hover);
}

.blog-card-body {
  padding: 1.5rem;
}

.blog-card time {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.blog-card h3 {
  font-size: 1.15rem;
  margin: 0.5rem 0;
}

.blog-card h3 a {
  color: var(--color-heading);
  text-decoration: none;
}
.blog-card h3 a:hover {
  color: var(--color-primary);
}

.blog-card p {
  color: var(--color-text-muted);
  font-size: 0.925rem;
  margin: 0;
}

/* ── Contact Form ─────────────────────────────────────────────────────────── */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.contact-info p {
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.contact-detail {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.contact-detail .icon {
  color: var(--color-primary);
  flex-shrink: 0;
  margin-top: 0.15rem;
}

.contact-form {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 2rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
  font-size: 0.925rem;
}

.form-control {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-btn);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  background: #fff;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 0.2rem rgba(13,110,253,0.15);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

/* ── Documentation / FAQ ──────────────────────────────────────────────────── */
.doc-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 2.5rem;
  align-items: start;
}

.doc-sidebar {
  position: sticky;
  top: 5rem;
}

.doc-sidebar nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.doc-sidebar nav a {
  display: block;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-btn);
  color: var(--color-text);
  font-size: 0.925rem;
  transition: background var(--transition-fast);
  text-decoration: none;
}

.doc-sidebar nav a:hover,
.doc-sidebar nav a.active {
  background: var(--color-primary-light);
  color: var(--color-primary);
  text-decoration: none;
}

.doc-content h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--color-border);
}

.doc-content h3 {
  font-size: 1.2rem;
  margin: 2rem 0 0.75rem;
}

.doc-content p, .doc-content li {
  color: var(--color-text);
  line-height: 1.75;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.faq-item h3 {
  margin-top: 0;
  font-size: 1.1rem;
}

/* ── Breadcrumbs ──────────────────────────────────────────────────────────── */
.breadcrumbs {
  padding: 1rem 0;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.breadcrumbs ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0;
  margin: 0;
}

.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumbs li + li::before {
  content: '›';
  color: var(--color-text-muted);
  margin-right: 0.25rem;
}

.breadcrumbs a {
  color: var(--color-text-muted);
  text-decoration: none;
}
.breadcrumbs a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.breadcrumbs [aria-current="page"] {
  color: var(--color-text);
  font-weight: 500;
}

/* ── Footer ───────────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--color-footer-bg);
  color: var(--color-footer-text);
  padding: 3rem 0 1.5rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand h3 {
  color: #fff;
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  margin: 0;
}

.footer-links h4 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

.footer-links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li { margin-bottom: 0.4rem; }

.footer-links a {
  color: var(--color-footer-text);
  font-size: 0.9rem;
  text-decoration: none;
  transition: color var(--transition-fast);
}
.footer-links a:hover { color: #fff; text-decoration: underline; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
}

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

/* ── RTL (Persian) Overrides ──────────────────────────────────────────────── */
html[dir="rtl"] .nav-links .nav-cta { margin-left: 0; margin-right: 0.5rem; }
html[dir="rtl"] .lang-toggle { margin-left: 0; margin-right: 0.75rem; }

html[dir="rtl"] .pricing-features { text-align: right; }
html[dir="rtl"] .pricing-features li::before { content: '✓'; }

html[dir="rtl"] .doc-layout {
  grid-template-columns: 220px 1fr;
  direction: rtl;
}

html[dir="rtl"] .contact-layout {
  direction: rtl;
}

html[dir="rtl"] .breadcrumbs ol { flex-direction: row; }
html[dir="rtl"] .breadcrumbs li + li::before { content: '‹'; }

/* ── Responsive ───────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-surface);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-card);
  }

  .nav-links.open { display: flex; }

  .nav-toggle { display: block; }

  .nav-links .nav-cta { margin-left: 0; margin-top: 0.5rem; width: 100%; text-align: center; }
  html[dir="rtl"] .nav-links .nav-cta { margin-right: 0; }

  .hero { padding: 3rem 0 2.5rem; }

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

  .doc-layout {
    grid-template-columns: 1fr;
  }

  .doc-sidebar {
    position: static;
    margin-bottom: 1.5rem;
  }

  .doc-sidebar nav ul {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  html[dir="rtl"] .doc-layout {
    direction: rtl;
  }

  html[dir="rtl"] .doc-sidebar nav ul {
    direction: rtl;
    justify-content: flex-start;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero h1 { font-size: 1.75rem; }
  .hero p { font-size: 1rem; }

  .hero-ctas { flex-direction: column; align-items: center; }
  .hero-ctas .btn { width: 100%; justify-content: center; }

  .section { padding: 2.5rem 0; }
}