/* ===== Fonts ===== */
@font-face {
  font-family: 'IRANSans';
  src: url('../fonts/IRANSans/IRANSansWeb_Light.woff2') format('woff2'),
       url('../fonts/IRANSans/IRANSansWeb_Light.woff') format('woff');
  font-weight: 300;
  font-display: swap;
}
@font-face {
  font-family: 'IRANSans';
  src: url('../fonts/IRANSans/IRANSansWeb.woff2') format('woff2'),
       url('../fonts/IRANSans/IRANSansWeb.woff') format('woff');
  font-weight: 400;
  font-display: swap;
}
@font-face {
  font-family: 'IRANSans';
  src: url('../fonts/IRANSans/IRANSansWeb_Medium.woff2') format('woff2'),
       url('../fonts/IRANSans/IRANSansWeb_Medium.woff') format('woff');
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: 'IRANSans';
  src: url('../fonts/IRANSans/IRANSansWeb_Bold.woff2') format('woff2'),
       url('../fonts/IRANSans/IRANSansWeb_Bold.woff') format('woff');
  font-weight: 700;
  font-display: swap;
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; }
html, body, h1, h2, h3, h4, p, ul, figure { margin: 0; padding: 0; }
ul { list-style: none; }
a { text-decoration: none; color: inherit; }
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; }
input, textarea { font: inherit; }

/* ===== Design Tokens ===== */
:root {
  --color-navy: #0f2a4a;
  --color-navy-dark: #081a30;
  --color-turquoise: #2fb6b0;
  --color-turquoise-light: #e3f6f4;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f8fa;
  --color-text: #1c2b3a;
  --color-text-muted: #5b6b7a;
  --color-success: #2e9e5b;
  --color-alert: #c0392b;
  --color-border: #e1e8ec;

  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-card: 0 4px 20px rgba(15, 42, 74, 0.08);

  --container-width: 1200px;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 64px;
  --space-8: 96px;
}

html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: 'IRANSans', Tahoma, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
}

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* ===== Buttons ===== */
.btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1rem;
  transition: background-color .15s ease, color .15s ease, border-color .15s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-turquoise);
  color: #fff;
  border: 2px solid var(--color-turquoise);
}
.btn-primary:hover { background: #26a099; border-color: #26a099; }
.btn-secondary {
  background: transparent;
  color: var(--color-navy);
  border: 2px solid var(--color-navy);
}
.btn-secondary:hover { background: var(--color-navy); color: #fff; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding-block: var(--space-3);
}
.brand-logo { height: 36px; width: auto; }
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: 1;
  justify-content: center;
}
.nav a {
  font-size: 0.95rem;
  color: var(--color-text);
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
}
.nav a:hover, .nav a[aria-current="page"] {
  color: var(--color-turquoise);
  border-bottom-color: var(--color-turquoise);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}
.header-actions .btn-secondary {
  padding-inline: var(--space-4);
  white-space: nowrap;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: var(--space-2);
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-navy);
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav {
    position: absolute;
    top: 100%;
    right: 0;
    left: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border);
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a { width: 100%; padding: var(--space-3) 0; }
  .header-actions { display: none; }
}

/* ===== Sections & Cards ===== */
.section { padding-block: var(--space-8); }
.section-title {
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-3);
}
.section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-6);
}
.section-subtitle.no-wrap-desktop { max-width: none; }
@media (min-width: 901px) {
  .section-subtitle.no-wrap-desktop { white-space: nowrap; }
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--space-4);
}
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-card);
}
.card h3 { font-size: 1.15rem; margin-block: var(--space-3) var(--space-2); }
.card p { color: var(--color-text-muted); font-size: 0.95rem; }

.icon-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--color-turquoise-light);
  color: var(--color-navy);
  flex-shrink: 0;
}
.icon-badge svg { width: 26px; height: 26px; }

.card-head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}
.card-head h3, .card-head h2 { margin: 0; }

/* ===== Hero ===== */
.hero {
  padding-block: var(--space-8) var(--space-7);
  background:
    radial-gradient(circle at 85% 15%, var(--color-turquoise-light) 0%, transparent 45%),
    radial-gradient(circle at 10% 90%, var(--color-turquoise-light) 0%, transparent 40%),
    var(--color-bg);
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-7);
  align-items: center;
}
.hero-copy h1 {
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: var(--space-4);
  color: var(--color-navy);
}
.hero-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-5);
}
.hero-actions { display: flex; gap: var(--space-3); margin-bottom: var(--space-5); flex-wrap: wrap; }
.trust-chips { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.trust-chips li {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: var(--space-2) var(--space-3);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}
.hero-visual { width: 100%; }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-copy h1 { font-size: 2rem; }
  .hero-visual { order: -1; max-width: 360px; margin: 0 auto; }
}

/* ===== Banners ===== */
.banner-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-7);
  align-items: center;
}
.banner-copy h2 { font-size: 1.8rem; color: var(--color-navy); margin-bottom: var(--space-3); }
.banner-copy p { color: var(--color-text-muted); margin-bottom: var(--space-4); }
.banner-list { margin-bottom: var(--space-4); }
.banner-list li {
  position: relative;
  padding-inline-start: var(--space-4);
  margin-bottom: var(--space-2);
  color: var(--color-text-muted);
}
.banner-list li::before {
  content: '';
  position: absolute;
  inline-size: 8px;
  block-size: 8px;
  border-radius: 50%;
  background: var(--color-turquoise);
  inset-inline-start: 0;
  top: 10px;
}
.banner-reverse .banner-copy { order: 2; }
.banner-reverse .banner-visual { order: 1; }
.banner:nth-of-type(even) { background: var(--color-bg-alt); }

@media (max-width: 900px) {
  .banner-inner { grid-template-columns: 1fr; }
  .banner-reverse .banner-copy,
  .banner-reverse .banner-visual { order: initial; }
}

/* ===== Trust strip ===== */
.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}
.trust-item { text-align: center; }
.trust-item h4 { margin-block: var(--space-3) var(--space-2); font-size: 1rem; }
.trust-item p { color: var(--color-text-muted); font-size: 0.9rem; }

@media (max-width: 900px) {
  .trust-strip { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .trust-strip { grid-template-columns: 1fr; }
}

/* ===== Module detail (modules.html) ===== */
.module-detail:nth-of-type(even) { background: var(--color-bg-alt); }
.module-inner {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-6);
}
.module-intro h2 { font-size: 1.6rem; color: var(--color-navy); }
.module-intro p { color: var(--color-text-muted); }
.module-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2) var(--space-4);
}
.module-features li {
  position: relative;
  padding-inline-start: var(--space-4);
  color: var(--color-text-muted);
}
.module-features li::before {
  content: '✓';
  position: absolute;
  inset-inline-start: 0;
  color: var(--color-turquoise);
  font-weight: 700;
}
.module-cta {
  text-align: center;
  background: var(--color-navy);
  color: #fff;
}
.module-cta-inner h2 { margin-bottom: var(--space-4); color: #fff; }
.module-cta h2 { margin-bottom: var(--space-4); }
.module-cta .btn-primary { background: #fff; color: var(--color-navy); border-color: #fff; }
.module-cta .btn-primary:hover { background: var(--color-turquoise-light); }

@media (max-width: 900px) {
  .module-inner { grid-template-columns: 1fr; }
  .module-features { grid-template-columns: 1fr; }
}

/* ===== About page ===== */
.about-intro .lead {
  font-size: 1.2rem;
  color: var(--color-navy);
  font-weight: 500;
  margin-block: var(--space-3) var(--space-4);
}
.about-intro p:not(.lead) { color: var(--color-text-muted); max-width: 800px; }
.who-its-for { text-align: center; }
.audience-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-2);
  margin-block: var(--space-4);
}
.audience-list li {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: var(--space-2) var(--space-4);
  font-size: 0.9rem;
}

/* ===== FAQ accordion ===== */
.accordion { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: var(--space-3); }
.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-bg);
  border: none;
  padding: var(--space-4);
  font-weight: 500;
  font-size: 1rem;
  text-align: right;
}
.accordion-icon {
  font-size: 1.4rem;
  color: var(--color-turquoise);
  transition: transform .15s ease;
}
.accordion-trigger[aria-expanded="true"] .accordion-icon { transform: rotate(45deg); }
.accordion-panel { padding: 0 var(--space-4) var(--space-4); color: var(--color-text-muted); }

/* ===== Contact page ===== */
.contact-inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: var(--space-7);
}
.contact-info h1 { font-size: 2rem; color: var(--color-navy); margin-bottom: var(--space-3); }
.contact-info p { color: var(--color-text-muted); margin-bottom: var(--space-4); }
.contact-details li { margin-bottom: var(--space-2); }
.contact-form { display: flex; flex-direction: column; gap: var(--space-3); }
.contact-form label { display: flex; flex-direction: column; gap: var(--space-2); font-size: 0.9rem; }
.contact-form input, .contact-form textarea {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  font-size: 1rem;
}
.contact-form input:focus, .contact-form textarea:focus {
  outline: none;
  border-color: var(--color-turquoise);
}
.form-error { color: var(--color-alert); font-size: 0.9rem; }

@media (max-width: 900px) {
  .contact-inner { grid-template-columns: 1fr; }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-navy-dark);
  color: #cdd8e0;
  padding-block: var(--space-7);
}
.footer-columns {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: var(--space-5);
}
.footer-brand .footer-logo {
  height: 44px;
  margin-bottom: var(--space-3);
  border-radius: var(--radius-md);
}
.footer-brand p { font-size: 0.85rem; line-height: 1.9; color: #9fb0be; }
.footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: var(--space-3); }
.footer-col a, .footer-col span {
  display: block;
  font-size: 0.85rem;
  color: #9fb0be;
  margin-bottom: var(--space-2);
}
.footer-col a:hover { color: var(--color-turquoise); }

@media (max-width: 900px) {
  .footer-columns { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .footer-columns { grid-template-columns: 1fr; }
}