/* =========================================================
   ELESONE — Base stylesheet (shared across every page)
   Load order: base.css only. Page-specific CSS files come after it.
   ========================================================= */

/* ---- Local Persian font ---- */
@font-face {
  font-family: "Vazirmatn";
  src: url("/fonts/Vazir.ttf") format("truetype");
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

/* ---- Design tokens ----
   Industrial-premium palette: deep petroleum blue (engineered, calm, trustworthy) on a warm
   sand page, with the brand gold #D2AB5E demoted to an accent — CTAs, active states, key
   highlights only, never a background wash. Petrol + sand carry ~80% of the visual weight.
   The older names below (--brand-*, --surface-*, --border*, --text-*) are kept as aliases
   so every existing component keeps working; new work should use the palette names. */
:root {
  /* Palette */
  --ink-900:    #07141A;   /* near-black petroleum: body text, darkest surfaces */
  --petrol-800: #0E3A47;   /* primary brand blue: nav, hero, dark sections */
  --petrol-700: #155264;   /* secondary blue: gradients, hovers, links on light */
  --petrol-050: #EAF2F3;   /* pale cool tint: section separation */
  --sand-050:   #F6F3EC;   /* warm off-white page background */
  --gold-500:   #D2AB5E;   /* brand gold — accent only */
  --gold-600:   #B8863F;   /* gold hover/pressed */
  --steel-200:  #C9D2D6;   /* borders, dividers, disabled */

  /* Legacy aliases (mapped onto the palette) */
  --brand-ink:       var(--ink-900);
  --brand-steel:     #2C4954;
  --brand-gold:      var(--gold-500);
  --brand-gold-dark: var(--gold-600);   /* backgrounds/borders only — too light for text on sand */

  --surface-0: var(--sand-050);   /* page background */
  --surface-1: #FFFEFB;           /* cards, panels (warm white) */
  --surface-2: var(--petrol-050); /* subtle section separation */
  --border:        #DCE3E5;
  --border-strong: var(--steel-200);

  --text-primary:   var(--ink-900);
  --text-secondary: #43606A;      /* 6:1 on sand */
  --text-on-dark:   #EEF4F4;
  --text-on-dark-muted: #A9C0C5;
  --text-on-gold:   #2A1C05;

  --footer-bg: var(--ink-900);

  /* Depth: petrol-tinted shadows (never neutral grey) and metallic gradients */
  --shadow-sm: 0 1px 2px rgba(7, 20, 26, 0.06), 0 4px 14px rgba(14, 58, 71, 0.07);
  --shadow-md: 0 2px 4px rgba(7, 20, 26, 0.07), 0 14px 32px rgba(14, 58, 71, 0.13);
  --shadow-lg: 0 6px 12px rgba(7, 20, 26, 0.08), 0 28px 56px rgba(14, 58, 71, 0.20);
  --shadow-gold: 0 6px 18px rgba(184, 134, 63, 0.32);
  --grad-petrol: linear-gradient(135deg, var(--petrol-800) 0%, #0B3140 55%, var(--ink-900) 100%);
  --grad-petrol-soft: linear-gradient(135deg, var(--petrol-800), var(--petrol-700));

  /* Signature motif: paired elevator guide rails (thin vertical lines) */
  --rail-line: rgba(14, 58, 71, 0.09);
  --rail-line-on-dark: rgba(234, 242, 243, 0.07);

  --font-sans: "Vazirmatn", Tahoma, sans-serif;
  /* Technical data only (capacities, dimensions, model/phone numbers). Persian digits fall back to Vazirmatn. */
  --font-mono: ui-monospace, "SFMono-Regular", "SF Mono", "JetBrains Mono", Menlo, Consolas, "Vazirmatn", monospace;
  --fs-sm:   0.9375rem;
  --fs-base: 1rem;
  --fs-md:   1.125rem;
  --fs-lg:   1.375rem;
  --fs-xl:   1.875rem;
  --fs-2xl:  2.5rem;
  --fs-3xl:  3.5rem;

  --container-w: 1180px;
  --radius:      6px;
  --radius-lg:   12px;
  --header-h:    76px;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html {
  overflow-y: scroll;
  scrollbar-gutter: stable;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.8;
  color: var(--text-primary);
  background: var(--surface-0);
  direction: rtl;
}
img, picture, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4 { margin: 0 0 var(--space-2); font-weight: 700; line-height: 1.35; color: var(--brand-ink); }
h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-lg); }
p  { margin: 0 0 var(--space-2); max-width: 68ch; color: var(--text-secondary); }
button { font-family: inherit; }

:focus-visible {
  outline: 3px solid var(--brand-gold);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: var(--space-3);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius);
  font-size: var(--fs-sm);
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
.btn-primary {
  background: var(--brand-gold);
  color: var(--text-on-gold);
}
.btn-primary:hover { background: var(--brand-gold-dark); }
.btn-outline {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--brand-ink);
}
.btn-outline:hover { border-color: var(--brand-ink); }

/* =========================================================
   HEADER
   ========================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--surface-1);
  border-bottom: 1px solid var(--border);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
}

/* Icon-only logo — no wordmark. Sized generously since it carries
   the whole brand mark on its own; a tiny icon-only logo reads as
   an afterthought. */
/* Icon on the left, ELESONE on its right — fixed LTR order regardless of the page's RTL flow. */
.site-logo {
  display: flex;
  direction: ltr;
  align-items: center;
}
.page-footer .container a.site-logo { display: flex; } /* footer links are display:block (seo-pages.css) */
.site-logo img {
  height: 52px;
  width: auto;
}
.site-logo span {
  margin-inline-start: 0.5rem;
  color: var(--brand-ink);
  font-size: var(--fs-sm);
  font-weight: 700;
  white-space: nowrap;
}

.main-nav { display: flex; }
.main-nav > ul { display: flex; align-items: center; gap: 0.25rem; }
.main-nav > ul > li { position: relative; }
.main-nav > ul > li > a,
.main-nav > ul > li > button.nav-toggle { white-space: nowrap; }
.main-nav > ul > li > a,
.main-nav > ul > li > button.nav-toggle {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.9rem 0.85rem;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--brand-steel);
  background: none;
  border: none;
  cursor: pointer;
}
.main-nav > ul > li > a:hover,
.main-nav > ul > li > a.is-active,
.main-nav > ul > li:hover > button.nav-toggle,
.main-nav > ul > li > button.nav-toggle:hover,
.main-nav > ul > li > button.nav-toggle.is-active,
.main-nav > ul > li.is-open > button.nav-toggle {
  color: var(--brand-ink);
}
.main-nav > ul > li > a.is-active { font-weight: 700; color: var(--brand-gold-dark); }
.main-nav > ul > li > button.nav-toggle.is-active { color: var(--brand-gold-dark); }
.nav-toggle::after {
  content: "";
  width: 0.4rem;
  height: 0.4rem;
  margin-top: -0.2rem;
  border-inline-end: 1px solid currentColor;
  border-bottom: 1px solid currentColor;
  transform: rotate(45deg);
  transition: transform 0.15s ease;
}
.has-dropdown.is-open > .nav-toggle::after { transform: rotate(225deg); margin-top: 0.2rem; }

/* dropdown */
.has-dropdown .dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  min-width: 230px;
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 12px 28px rgba(7, 20, 26, 0.12);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: transform 0.15s ease;
}
.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown,
.has-dropdown.is-open .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown li a {
  display: block;
  padding: 0.6rem 0.75rem;
  border-radius: 4px;
  font-size: var(--fs-sm);
  color: var(--brand-steel);
}
.dropdown li a:hover { background: var(--surface-2); color: var(--brand-ink); }
.dropdown li a.is-active { background: var(--surface-2); color: var(--brand-gold-dark); font-weight: 700; }

.header-actions { display: flex; align-items: center; gap: 0.75rem; }
.site-header .header-actions > a.btn { display: none; }
.header-phone {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--brand-steel);
}
.nav-burger {
  display: none;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
}
.nav-burger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--brand-ink);
  margin: 5px 0;
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer {
  background: var(--footer-bg);
  color: var(--text-on-dark);
  margin-top: var(--space-5);
}
.site-footer .container {
  padding-block: var(--space-4);
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-3);
}
.site-footer h2 {
  font-size: var(--fs-sm);
  line-height: inherit;
  font-weight: 700;
  color: var(--text-on-dark);
  margin-bottom: var(--space-2);
}
.site-footer p, .site-footer a {
  font-size: var(--fs-sm);
  color: var(--text-on-dark-muted);
  margin: 0 0 0.5rem;
}
.site-footer a:hover { color: var(--brand-gold); }
.footer-bottom {
  border-top: 1px solid rgba(234, 242, 243, 0.12);
  padding: var(--space-2) 0;
  text-align: center;
  font-size: 0.8125rem;
  color: #7F969C;
}

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


/* =========================================================
   RESPONSIVE
   ========================================================= */
/* ---- Mobile menu: off-canvas panel + backdrop (behaviour in js/header.js) ---- */
.nav-panel-head, .nav-backdrop { display: none; }

@media (max-width: 900px) {
  html.nav-open { overflow: hidden; }

  .nav-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 1;
    background: rgba(7, 20, 26, 0.38);
    -webkit-backdrop-filter: blur(2px);
    backdrop-filter: blur(2px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0s linear 0.3s;
  }
  .nav-backdrop.is-visible { opacity: 1; visibility: visible; transition: opacity 0.3s ease; }

  .main-nav {
    position: fixed;
    inset-block: 0;
    inset-inline-start: 0;
    z-index: 2;
    display: flex;
    flex-direction: column;
    width: min(86vw, 360px);
    padding: 0 1.5rem 2rem;
    overflow-y: auto;
    overscroll-behavior: contain;
    background: var(--surface-1);
    box-shadow: -16px 0 40px rgba(7, 20, 26, 0.14);
    transform: translateX(100%);
    visibility: hidden;
    transition: transform 0.32s cubic-bezier(0.22, 0.8, 0.3, 1), visibility 0s linear 0.32s;
  }
  .main-nav.is-open {
    transform: none;
    visibility: visible;
    transition: transform 0.32s cubic-bezier(0.22, 0.8, 0.3, 1);
  }

  .nav-panel-head {
    position: sticky;
    top: 0;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--header-h);
    margin-bottom: 0.25rem;
    background: var(--surface-1);
    border-bottom: 1px solid rgba(7, 20, 26, 0.07);
  }
  .nav-panel-title { color: var(--text-secondary); font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.02em; }
  .nav-close {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    margin-inline-end: -0.5rem;
    padding: 0;
    color: var(--brand-steel);
    background: none;
    border: 0;
    border-radius: 50%;
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease;
  }
  .nav-close:hover { background: var(--surface-2); color: var(--brand-ink); }

  .main-nav > ul { flex-direction: column; align-items: stretch; gap: 0; }
  .main-nav > ul > li { border-bottom: 1px solid rgba(7, 20, 26, 0.06); }
  .main-nav > ul > li:last-child { border-bottom: 0; }
  .main-nav > ul > li > a,
  .main-nav > ul > li > button.nav-toggle {
    width: 100%;
    min-height: 54px;
    padding: 0.95rem 0;
    justify-content: space-between;
    font-size: var(--fs-base);
    font-weight: 600;
    color: var(--brand-ink);
  }
  .main-nav > ul > li > a.is-active,
  .main-nav > ul > li.is-open > button.nav-toggle,
  .main-nav > ul > li.is-open > a { color: var(--brand-gold-dark); }
  .main-nav > ul > li.has-parent-link > a { flex: 1; padding-inline-end: 0; }
  .main-nav > ul > li.has-parent-link > button.nav-toggle { flex: none; width: 44px; padding: 0; justify-content: center; }
  /* Chevron: points down when closed, rotates to point up when the group is open. */
  .main-nav .nav-toggle::after {
    width: 0.45rem;
    height: 0.45rem;
    margin-top: -0.25rem;
    border: 0;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg);
    transition: transform 0.25s ease, margin 0.25s ease;
  }
  .main-nav .has-dropdown.is-open > .nav-toggle::after { margin-top: 0.25rem; transform: rotate(225deg); }

  /* Submenus expand in place (accordion) with a thin gold accent on the open group. */
  .main-nav .has-dropdown .dropdown,
  .main-nav .has-dropdown:hover .dropdown,
  .main-nav .has-dropdown:focus-within .dropdown {
    position: static;
    flex-basis: 100%;
    min-width: 0;
    max-height: 0;
    margin: 0;
    padding: 0 1rem 0 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transform: none;
    background: none;
    border: 0;
    border-inline-start: 2px solid var(--brand-gold);
    border-radius: 0;
    box-shadow: none;
    transition: max-height 0.3s ease, opacity 0.2s ease, margin 0.3s ease, visibility 0s linear 0.3s;
  }
  .main-nav .has-dropdown.is-open .dropdown {
    max-height: 26rem;
    margin: 0 0.25rem 0.9rem 0;
    opacity: 1;
    visibility: visible;
    transition: max-height 0.3s ease, opacity 0.25s ease 0.05s, margin 0.3s ease;
  }
  .main-nav > ul > li.has-parent-link { flex-wrap: wrap; }
  .main-nav .dropdown li a {
    padding: 0.55rem 0;
    border-radius: 0;
    font-size: var(--fs-sm);
    font-weight: 400;
    color: var(--brand-steel);
  }
  .main-nav .dropdown li a:hover { background: none; color: var(--brand-ink); }
  .main-nav .dropdown li a.is-active { background: none; color: var(--brand-gold-dark); font-weight: 600; }
}

@media (max-width: 900px) {
  .header-phone span.phone-text { display: none; }
  .nav-burger { display: block; }
  .site-footer .container { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 901px) and (max-width: 1120px) {
  .main-nav > ul > li > a,
  .main-nav > ul > li > button.nav-toggle { padding-inline: 0.5rem; font-size: 0.875rem; }
  .header-actions { gap: 0.4rem; }
  .header-actions .btn { padding-inline: 0.9rem; }
}

@media (max-width: 520px) {
  :root { --fs-3xl: 2.25rem; --fs-2xl: 1.75rem; }
  .site-logo img { height: 42px; }
  .site-footer .container { grid-template-columns: 1fr; }
}


/* ---- Dropdown group whose label is also a link (e.g. انواع آسانسور) ---- */
.main-nav > ul > li.has-parent-link { display: flex; align-items: center; }
.main-nav > ul > li.has-parent-link > a { padding-inline-end: 0.2rem; }
.main-nav > ul > li.has-parent-link > button.nav-toggle { padding-inline: 0.35rem 0.6rem; }
.main-nav > ul > li.has-parent-link:has(> button.nav-toggle.is-active) > a { color: var(--brand-gold-dark); }

/* =========================================================
   GLASS HEADER + CONTACT DOCK
   js/header.js sets --glass on .site-header from 0 (page top) to 1 (scrolled ~220px):
   the bar starts light and airy and turns more opaque/frosted as content slides under it.
   The frosted layer lives on ::before — a backdrop-filter on the header itself would
   become the containing block of the fixed mobile menu panel and break it.
   ========================================================= */
.site-header {
  --glass: 0;
  background: transparent;
  border-bottom-color: rgba(7, 20, 26, calc(0.05 + 0.05 * var(--glass)));
}
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: rgba(255, 255, 255, calc(0.6 + 0.28 * var(--glass)));
  -webkit-backdrop-filter: blur(calc(6px + 14px * var(--glass))) saturate(calc(1.15 + 0.45 * var(--glass)));
  backdrop-filter: blur(calc(6px + 14px * var(--glass))) saturate(calc(1.15 + 0.45 * var(--glass)));
  box-shadow: 0 calc(12px * var(--glass)) calc(32px * var(--glass)) rgba(7, 20, 26, calc(0.09 * var(--glass)));
}
@supports not ((backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px))) {
  .site-header::before, .contact-dock { background: rgba(255, 255, 255, 0.97) !important; }
}

.contact-dock {
  position: absolute;
  top: 100%;
  inset-inline-end: max(var(--space-3), calc((100% - var(--container-w)) / 2 + var(--space-3)));
  z-index: -1; /* under open nav dropdowns */
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.35rem;
  border: 1px solid rgba(7, 20, 26, calc(0.05 + 0.05 * var(--glass)));
  border-top: 0;
  border-radius: 0 0 14px 14px;
  background: rgba(255, 255, 255, calc(0.6 + 0.28 * var(--glass)));
  -webkit-backdrop-filter: blur(calc(6px + 14px * var(--glass))) saturate(calc(1.15 + 0.45 * var(--glass)));
  backdrop-filter: blur(calc(6px + 14px * var(--glass))) saturate(calc(1.15 + 0.45 * var(--glass)));
  box-shadow: 0 10px 26px rgba(7, 20, 26, calc(0.05 + 0.07 * var(--glass)));
}
.dock-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 40px;
  padding: 0 0.85rem;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--brand-ink);
  font: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.18s ease, color 0.18s ease, transform 0.18s ease;
  -webkit-tap-highlight-color: transparent;
}
.dock-btn svg { flex: none; color: var(--brand-gold-dark); transition: color 0.18s ease; }
.dock-btn:hover { background: rgba(210, 171, 94, 0.14); }
.dock-btn:active { transform: scale(0.97); }
.dock-btn:focus-visible { outline: 2px solid var(--brand-gold-dark); outline-offset: 2px; }
.dock-number { font-variant-numeric: tabular-nums; }
.dock-btn--wa:hover svg { color: #1F8F4E; }
.dock-btn--consult { margin-inline-start: 0.2rem; background: var(--brand-gold); color: var(--text-on-gold); box-shadow: 0 4px 14px rgba(176, 138, 62, 0.28); }
.dock-btn--consult svg { color: var(--text-on-gold); }
.dock-btn--consult:hover { background: var(--brand-gold-dark); }

/* Mobile (≤900px): the dock is not shown at all — mobile uses the floating contact button
   instead (css/contact-fab.css). The desktop dock above is untouched. */
@media (max-width: 900px) {
  :root { --header-h: 62px; }
  .site-header .container { gap: 0.75rem; }
  .contact-dock { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .dock-btn { transition: none; }
}