/* ═══════════════════════════════════════════
   ایران‌متره — Header Styles v1.0
   Design System: Navy + Gold · RTL · Vazirmatn
   ═══════════════════════════════════════════ */

/* ── توکن‌های رنگ ── */
:root {
  --im-navy-deep:    #091E3F;
  --im-navy-primary: #0D2D5E;
  --im-navy-mid:     #163A72;
  --im-navy-light:   #1E4D8C;
  --im-gold:         #C8A84B;
  --im-gold-light:   #E8C96A;
  --im-off-white:    #F4F6F9;
  --im-muted:        #8A9BB0;
  --im-white:        #FFFFFF;

  /* فاصله */
  --im-sp-xs:  4px;
  --im-sp-sm:  8px;
  --im-sp-md:  16px;
  --im-sp-lg:  24px;
  --im-sp-xl:  32px;

  /* شعاع */
  --im-radius-btn:  10px;
  --im-radius-card: 14px;
  --im-radius-drop: 14px;

  /* سایه */
  --im-shadow-md: 0 8px 28px rgba(13,45,94,.12);
  --im-shadow-lg: 0 20px 60px rgba(13,45,94,.15);

  /* ارتفاع هدر */
  --im-topbar-h: 36px;
  --im-nav-h:    72px;
  --im-header-h: calc(var(--im-topbar-h) + var(--im-nav-h));
}

/* ── ریست پایه ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Vazirmatn', sans-serif;
  direction: rtl;
  background: var(--im-off-white);
  padding-top: var(--im-header-h);
}

/* ═══════════════════════════════════════════
   HEADER WRAPPER
   ═══════════════════════════════════════════ */
.im-header {
  position: fixed;
  top: 0; right: 0; left: 0;
  z-index: 1000;
  transition: box-shadow .3s ease;
}

.im-header--scrolled {
  box-shadow: var(--im-shadow-lg);
}

/* ═══════════════════════════════════════════
   TOP BAR — نوار آمار بالا
   ═══════════════════════════════════════════ */
.im-topbar {
  background: var(--im-navy-deep);
  border-bottom: 1px solid rgba(200,168,75,.15);
  height: var(--im-topbar-h);
  display: flex;
  align-items: center;
}

.im-topbar__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--im-sp-lg);
  display: flex;
  align-items: center;
  gap: var(--im-sp-md);
  font-size: 12px;
  color: var(--im-muted);
}

.im-topbar__item {
  display: flex;
  align-items: center;
  gap: 5px;
}

.im-topbar__item strong {
  color: var(--im-gold);
  font-weight: 700;
}

.im-topbar__item svg {
  color: var(--im-gold);
  flex-shrink: 0;
}

.im-topbar__sep {
  color: rgba(138,155,176,.3);
}

/* ═══════════════════════════════════════════
   NAV — ناوبار اصلی
   ═══════════════════════════════════════════ */
.im-nav {
  background: var(--im-navy-primary);
  height: var(--im-nav-h);
  /* گرید نقطه‌چین طبق design system */
  background-image:
    radial-gradient(circle, rgba(200,168,75,.04) 1px, transparent 1px);
  background-size: 24px 24px;
}

.im-nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--im-sp-lg);
  height: 100%;
  display: flex;
  align-items: center;
  gap: var(--im-sp-xl);
}

/* ── لوگو ── */
.im-logo {
  display: flex;
  align-items: center;
  gap: var(--im-sp-sm);
  text-decoration: none;
  flex-shrink: 0;
}

.im-logo__img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  filter: brightness(0) invert(1);
}

.im-logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.im-logo__fa {
  font-size: 20px;
  font-weight: 800;
  color: var(--im-white);
  letter-spacing: -.02em;
}

.im-logo__accent {
  color: var(--im-gold);
}

.im-logo__sub {
  font-size: 10px;
  font-weight: 400;
  color: var(--im-muted);
  letter-spacing: .02em;
}

/* ── منو ── */
.im-menu {
  list-style: none;
  display: flex;
  align-items: center;
  gap: var(--im-sp-xs);
  flex: 1;
  justify-content: center;
}

.im-menu__item {
  position: relative;
}

.im-menu__link {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px var(--im-sp-md);
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,.8);
  text-decoration: none;
  border-radius: var(--im-radius-btn);
  transition: color .2s, background .2s;
  white-space: nowrap;
}

.im-menu__link:hover,
.im-menu__link--active {
  color: var(--im-white);
  background: rgba(255,255,255,.08);
}

.im-menu__link--active {
  color: var(--im-gold);
}

.im-menu__chevron {
  transition: transform .2s;
}

.im-menu__item--dropdown:hover .im-menu__chevron {
  transform: rotate(180deg);
}

/* ── دراپ‌داون ── */
.im-dropdown {
  list-style: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 240px;
  background: var(--im-navy-deep);
  border: 1px solid rgba(200,168,75,.15);
  border-radius: var(--im-radius-drop);
  box-shadow: var(--im-shadow-lg);
  padding: var(--im-sp-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition: opacity .2s, transform .2s, visibility .2s;
  z-index: 100;
}

.im-menu__item--dropdown:hover .im-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.im-dropdown__link {
  display: flex;
  align-items: center;
  gap: var(--im-sp-sm);
  padding: 10px var(--im-sp-sm);
  text-decoration: none;
  border-radius: var(--im-radius-btn);
  transition: background .18s;
  color: var(--im-white);
}

.im-dropdown__link:hover {
  background: rgba(255,255,255,.07);
}

.im-dropdown__link--gold:hover {
  background: rgba(200,168,75,.12);
}

.im-dropdown__link--gold strong {
  color: var(--im-gold);
}

.im-dropdown__icon {
  font-size: 20px;
  flex-shrink: 0;
  width: 32px;
  text-align: center;
}

.im-dropdown__link div {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.im-dropdown__link strong {
  font-size: 13px;
  font-weight: 700;
  color: var(--im-white);
}

.im-dropdown__link small {
  font-size: 11px;
  color: var(--im-muted);
}

/* ── دکمه CTA ── */
.im-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--im-sp-sm);
  padding: 10px var(--im-sp-lg);
  background: var(--im-gold);
  color: var(--im-navy-deep);
  font-family: 'Vazirmatn', sans-serif;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--im-radius-btn);
  white-space: nowrap;
  flex-shrink: 0;
  transition: background .2s, transform .15s, box-shadow .2s;
  box-shadow: 0 4px 16px rgba(200,168,75,.3);
}

.im-cta-btn:hover {
  background: var(--im-gold-light);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(200,168,75,.45);
}

.im-cta-btn svg {
  transform: rotate(180deg); /* RTL: فلش به سمت چپ */
}

.im-cta-btn--full {
  width: 100%;
  justify-content: center;
  margin-top: var(--im-sp-sm);
}

/* ═══════════════════════════════════════════
   HAMBURGER — موبایل
   ═══════════════════════════════════════════ */
.im-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--im-radius-btn);
  cursor: pointer;
  padding: 8px;
  margin-right: auto;
}

.im-hamburger span {
  display: block;
  height: 2px;
  background: var(--im-white);
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
}

.im-hamburger--open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.im-hamburger--open span:nth-child(2) { opacity: 0; }
.im-hamburger--open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ═══════════════════════════════════════════
   MOBILE MENU
   ═══════════════════════════════════════════ */
.im-mobile-menu {
  display: none;
  background: var(--im-navy-deep);
  border-top: 1px solid rgba(200,168,75,.1);
  padding: var(--im-sp-md) var(--im-sp-lg);
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease, padding .35s ease;
}

.im-mobile-menu--open {
  max-height: 600px;
}

.im-mobile-menu__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.im-mobile-menu__link {
  display: block;
  padding: 12px var(--im-sp-md);
  font-size: 15px;
  font-weight: 600;
  color: var(--im-white);
  text-decoration: none;
  border-radius: var(--im-radius-btn);
  transition: background .18s;
}

.im-mobile-menu__link:hover {
  background: rgba(255,255,255,.07);
}

.im-mobile-menu__sub {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 4px var(--im-sp-md);
  margin-bottom: var(--im-sp-sm);
  border-right: 2px solid rgba(200,168,75,.3);
}

.im-mobile-menu__sub a {
  font-size: 13px;
  font-weight: 500;
  color: var(--im-muted);
  text-decoration: none;
  padding: 6px var(--im-sp-sm);
  border-radius: 8px;
  transition: color .18s, background .18s;
}

.im-mobile-menu__sub a:hover {
  color: var(--im-gold);
  background: rgba(200,168,75,.07);
}

/* ═══════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════ */
@media (max-width: 900px) {
  .im-menu,
  .im-cta-btn:not(.im-cta-btn--full) { display: none; }
  .im-hamburger { display: flex; }
  .im-mobile-menu { display: block; }

  .im-topbar__inner {
    font-size: 11px;
    gap: var(--im-sp-sm);
  }

  .im-topbar__sep { display: none; }
  .im-topbar__item:not(:first-child) { display: none; }
}