/* =========================================================
   کفش ایوان | E1Shoes — استایل اصلی
   Mobile-first | Light theme | Sport accent
   ========================================================= */

:root {
  --bg:          #ffffff;
  --bg-soft:     #f7f7f8;
  --bg-mute:     #efeff1;
  --text:        #111114;
  --text-soft:   #52525b;
  --text-muted:  #8b8b93;
  --border:      #e6e6ea;

  --accent:      #ff5a1f;
  --accent-dark: #e04a10;
  --accent-soft: #fff1ea;

  --radius:      16px;
  --radius-lg:   24px;
  --radius-pill: 999px;

  --shadow-sm: 0 2px 8px rgba(17,17,20,.06);
  --shadow-md: 0 8px 24px rgba(17,17,20,.08);
  --shadow-lg: 0 20px 50px rgba(17,17,20,.12);

  --t-fast: .15s ease;
  --t-base: .25s ease;
  --t-slow: .4s cubic-bezier(.2,.8,.2,1);

  --container: 1200px;
  --header-h: 68px;
}

* { margin:0; padding:0; box-sizing:border-box; }

html {
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
  overflow-x:hidden;
  max-width:100%;
}

body {
  font-family:'Estedad', system-ui, -apple-system, 'Segoe UI', Tahoma, sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  font-size:15px;
  overflow-x:hidden;
  max-width:100%;
  width:100%;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

img, svg { max-width:100%; display:block; }
a { color:inherit; text-decoration:none; }
button { font-family:inherit; cursor:pointer; border:none; background:none; }
input { font-family:inherit; }

.container {
  width:100%;
  max-width:var(--container);
  margin-left:auto;
  margin-right:auto;
  padding-left:20px;
  padding-right:20px;
}

/* ============ Header ============ */
.site-header {
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--border);
  transition:box-shadow var(--t-base);
}
.site-header.is-scrolled {
  box-shadow:var(--shadow-sm);
}
.header-inner {
  height:var(--header-h);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
}

.brand {
  display:flex;
  flex-direction:column;
  line-height:1;
  font-weight:900;
}
.brand-en {
  font-size:1.15rem;
  letter-spacing:1px;
  color:var(--text);
}
.brand-fa {
  font-size:.72rem;
  font-weight:500;
  color:var(--text-muted);
  letter-spacing:2px;
  margin-top:3px;
}

.main-nav ul {
  display:flex;
  gap:26px;
  list-style:none;
}
.main-nav a {
  font-size:.92rem;
  font-weight:500;
  color:var(--text-soft);
  position:relative;
  transition:color var(--t-fast);
}
.main-nav a:hover { color:var(--accent); }
.main-nav a::after {
  content:'';
  position:absolute;
  bottom:-6px;
  right:0;
  width:0;
  height:2px;
  background:var(--accent);
  transition:width var(--t-base);
}
.main-nav a:hover::after { width:100%; }

.btn {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 22px;
  font-size:.92rem;
  font-weight:700;
  border-radius:var(--radius-pill);
  transition:transform var(--t-fast), box-shadow var(--t-base), background var(--t-base), color var(--t-base);
  white-space:nowrap;
  will-change:transform;
}
.btn:active { transform:scale(.97); }

.btn-primary {
  background:var(--accent);
  color:#fff;
  box-shadow:0 6px 18px rgba(255,90,31,.28);
}
.btn-primary:hover {
  background:var(--accent-dark);
  box-shadow:0 10px 26px rgba(255,90,31,.38);
  transform:translateY(-2px);
}

.btn-ghost {
  background:transparent;
  color:var(--text);
  border:1.5px solid var(--border);
}
.btn-ghost:hover {
  border-color:var(--accent);
  color:var(--accent);
  background:var(--accent-soft);
}

.btn-lg { padding:14px 30px; font-size:1rem; }

/* ============ Hero ============ */
.hero {
  position:relative;
  padding:70px 0 90px;
  overflow:hidden;
  background:
    radial-gradient(circle at 90% 10%, var(--accent-soft) 0%, transparent 45%),
    radial-gradient(circle at 10% 90%, #eef4ff 0%, transparent 45%),
    var(--bg);
}
.hero-inner {
  position:relative;
  z-index:2;
  max-width:760px;
}
.hero-badge {
  display:inline-block;
  padding:7px 16px;
  background:var(--accent-soft);
  color:var(--accent-dark);
  font-size:.8rem;
  font-weight:700;
  border-radius:var(--radius-pill);
  margin-bottom:22px;
  animation:fadeUp .6s ease both;
}
.hero-title {
  font-size:clamp(1.9rem, 8vw, 3.4rem);
  font-weight:900;
  line-height:1.25;
  letter-spacing:-.5px;
  margin-bottom:18px;
  animation:fadeUp .6s ease .08s both;
}
.hero-title .accent {
  color:var(--accent);
  position:relative;
}
.hero-desc {
  font-size:1.02rem;
  color:var(--text-soft);
  max-width:560px;
  margin-bottom:32px;
  animation:fadeUp .6s ease .16s both;
}
.hero-btns {
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  animation:fadeUp .6s ease .24s both;
}

/* ============ Section Head ============ */
.section-head {
  text-align:center;
  margin-bottom:48px;
}
.section-head small {
  display:block;
  color:var(--accent);
  font-weight:700;
  font-size:.82rem;
  letter-spacing:3px;
  margin-bottom:10px;
}
.section-head h2 {
  font-size:clamp(1.5rem, 6vw, 2.2rem);
  font-weight:900;
  letter-spacing:-.4px;
  line-height:1.3;
}

/* ============ Features ============ */
.features {
  padding:80px 0;
  background:var(--bg);
}
.features-grid {
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}
.feature {
  background:var(--bg-soft);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  padding:28px 22px;
  transition:transform var(--t-base), box-shadow var(--t-base), border-color var(--t-base);
}
.feature:hover {
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
  border-color:transparent;
}
.feature-icon {
  width:52px;
  height:52px;
  display:grid;
  place-items:center;
  border-radius:14px;
  background:var(--accent-soft);
  color:var(--accent);
  margin-bottom:16px;
}
.feature-icon svg { width:26px; height:26px; }
.feature h3 {
  font-size:1.05rem;
  font-weight:800;
  margin-bottom:6px;
}
.feature p {
  font-size:.92rem;
  color:var(--text-soft);
  line-height:1.7;
}

/* ============ Categories CTA ============ */
.categories-cta {
  padding:20px 0 80px;
}
.cta-box {
  position:relative;
  text-align:center;
  padding:52px 24px;
  border-radius:var(--radius-lg);
  background:
    linear-gradient(135deg, #1a1a1f 0%, #2a2a32 100%);
  color:#fff;
  overflow:hidden;
}
.cta-box::before {
  content:'';
  position:absolute;
  top:-50%;
  right:-50%;
  width:200%;
  height:200%;
  background:radial-gradient(circle at 70% 30%, rgba(255,90,31,.35), transparent 45%);
  pointer-events:none;
}
.cta-box h2 {
  position:relative;
  font-size:clamp(1.4rem, 5vw, 2rem);
  font-weight:900;
  margin-bottom:10px;
}
.cta-box p {
  position:relative;
  color:#c7c7ce;
  max-width:520px;
  margin:0 auto 26px;
  font-size:.95rem;
}
.cta-box .btn { position:relative; }

/* ============ Contact ============ */
.contact {
  padding:20px 0 90px;
}
.contact-grid {
  display:grid;
  grid-template-columns:1fr;
  gap:14px;
}
.contact-card {
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
  gap:6px;
  padding:26px 20px;
  background:var(--bg-soft);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  transition:transform var(--t-base), box-shadow var(--t-base);
}
.contact-card:hover {
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
}
.contact-icon {
  width:48px;
  height:48px;
  display:grid;
  place-items:center;
  border-radius:14px;
  background:#fff;
  color:var(--accent);
  margin-bottom:6px;
  box-shadow:var(--shadow-sm);
}
.contact-icon svg { width:24px; height:24px; }
.contact-label {
  font-size:.8rem;
  color:var(--text-muted);
  font-weight:500;
  letter-spacing:1px;
}
.contact-card strong {
  font-size:.98rem;
  font-weight:700;
  color:var(--text);
}

/* ============ Footer ============ */
.site-footer {
  background:#0e0e12;
  color:#fff;
  padding:36px 0 26px;
}
.footer-inner {
  display:flex;
  flex-direction:column;
  align-items:center;
  text-align:center;
  gap:10px;
}
.footer-brand { line-height:1; }
.footer-brand .brand-en { font-size:1.15rem; color:#fff; }
.footer-brand .brand-fa {
  display:block;
  font-size:.7rem;
  color:#8b8b93;
  letter-spacing:2px;
  margin-top:4px;
}
.footer-copy {
  color:#a1a1aa;
  font-size:.85rem;
  margin-top:6px;
}
.footer-domain {
  color:#6b6b73;
  font-size:.78rem;
  letter-spacing:1px;
}

/* ============ Menu Toggle ============ */
.menu-toggle {
  display:none;
  width:42px;
  height:42px;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:5px;
  border-radius:12px;
}
.menu-toggle span {
  width:20px;
  height:2px;
  background:var(--text);
  border-radius:2px;
  transition:transform var(--t-base), opacity var(--t-base);
}
.menu-toggle.is-open span:nth-child(1) { transform:translateY(7px) rotate(45deg); }
.menu-toggle.is-open span:nth-child(2) { opacity:0; }
.menu-toggle.is-open span:nth-child(3) { transform:translateY(-7px) rotate(-45deg); }

/* ============ Animations ============ */
@keyframes fadeUp {
  from { opacity:0; transform:translateY(20px); }
  to   { opacity:1; transform:translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration:.01ms !important;
    transition-duration:.01ms !important;
    scroll-behavior:auto !important;
  }
}

/* =========================================================
   Overflow Safety Net
   ========================================================= */
section, header, footer, main, div, aside, article {
  max-width:100%;
}
img, svg, video, iframe, table, pre {
  max-width:100%;
  height:auto;
}
p, h1, h2, h3, h4, h5, h6, a, span, strong, small {
  overflow-wrap:break-word;
  word-wrap:break-word;
}

/* =========================================================
   Responsive — Mobile-first
   ========================================================= */

@media (min-width:600px) {
  body { font-size:15.5px; }
  .features-grid { grid-template-columns:repeat(2,1fr); gap:18px; }
  .contact-grid  { grid-template-columns:repeat(3,1fr); }
  .container { padding-left:24px; padding-right:24px; }
}

@media (min-width:900px) {
  body { font-size:16px; }
  :root { --header-h:74px; }

  .hero { padding:90px 0 120px; }
  .hero-desc { font-size:1.08rem; }

  .features { padding:100px 0; }
  .features-grid { grid-template-columns:repeat(4,1fr); gap:20px; }

  .categories-cta { padding:30px 0 100px; }
  .cta-box { padding:70px 40px; }

  .contact { padding-bottom:110px; }

  .main-nav ul { gap:34px; }
}

@media (min-width:1200px) {
  .hero-title { letter-spacing:-1px; }
}

@media (max-width:899px) {
  .main-nav {
    position:fixed;
    top:var(--header-h);
    right:0;
    left:0;
    background:#fff;
    border-bottom:1px solid var(--border);
    padding:16px 20px 22px;
    transform:translateY(-110%);
    opacity:0;
    pointer-events:none;
    transition:transform var(--t-slow), opacity var(--t-base);
    box-shadow:var(--shadow-md);
    z-index:99;
  }
  .main-nav.is-open {
    transform:translateY(0);
    opacity:1;
    pointer-events:auto;
  }
  .main-nav ul {
    flex-direction:column;
    gap:0;
  }
  .main-nav a {
    display:block;
    padding:14px 0;
    font-size:1rem;
    border-bottom:1px solid var(--border);
  }
  .main-nav li:last-child a { border-bottom:none; }

  .btn-header { display:none; }
  .menu-toggle { display:flex; }
}

@media (max-width:400px) {
  .container { padding-left:16px; padding-right:16px; }
  .hero-btns { flex-direction:column; }
  .hero-btns .btn { width:100%; }
  .cta-box { padding:38px 18px; }
  .feature { padding:22px 18px; }
  .contact-card { padding:22px 16px; }
}

/* ===== اسکرول‌بار ===== */
::-webkit-scrollbar { width:10px; height:10px; }
::-webkit-scrollbar-track { background:var(--bg-soft); }
::-webkit-scrollbar-thumb {
  background:#c9c9d0;
  border-radius:10px;
  border:2px solid var(--bg-soft);
}
::-webkit-scrollbar-thumb:hover { background:#a1a1aa; }

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