/* ============================================================
   TECHNICAL CONSULTING — Homepage matching provided design
   Dark luxury tech aesthetic + gold accents + full responsive
   ============================================================ */

:root {
  --bg: #07070a;
  --bg-2: #0c0c10;
  --bg-3: #121218;
  --panel: rgba(255, 255, 255, 0.03);
  --panel-hover: rgba(255, 255, 255, 0.055);
  --line: rgba(212, 168, 75, 0.18);
  --line-strong: rgba(212, 168, 75, 0.35);
  --gold: #d4a84b;
  --gold-light: #f0d78c;
  --gold-dark: #b8860b;
  --gold-glow: rgba(212, 168, 75, 0.25);
  --text: #f5f0e6;
  --text-muted: #a89f8f;
  --text-dim: #6e665c;
  --radius: 16px;
  --radius-sm: 10px;
  --container: 1180px;
  --header-h: 72px;
  --font-fa: "Vazirmatn", Tahoma, "Segoe UI", sans-serif;
  --font-en: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.7);
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  color-scheme: dark;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-fa);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; transition: color var(--transition); }
button, input, select, textarea { font: inherit; color: inherit; }
ul, ol { list-style: none; }
::selection { background: rgba(212, 168, 75, 0.3); color: #fff; }

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

/* Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #0a0a0c; }
::-webkit-scrollbar-thumb { background: #2a2418; border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: #3d3424; }

/* Utilities */
.container {
  width: min(var(--container), 100% - 40px);
  margin-inline: auto;
}

.skip-link {
  position: fixed;
  top: -100px;
  inset-inline-start: 20px;
  z-index: 9999;
  background: var(--gold);
  color: #1a1408;
  padding: 10px 18px;
  border-radius: 8px;
  font-weight: 600;
  transition: top 0.2s;
}
.skip-link:focus { top: 16px; }

/* ========== BUTTONS ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  text-align: center;
}

.btn-gold {
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 50%, var(--gold-dark) 100%);
  color: #1a1408;
  box-shadow: 0 4px 20px var(--gold-glow), inset 0 1px 0 rgba(255,255,255,0.25);
}
.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(212, 168, 75, 0.4), inset 0 1px 0 rgba(255,255,255,0.3);
}
.btn-gold:active { transform: translateY(0); }

.btn-sm { padding: 10px 20px; font-size: 0.875rem; }
.btn-lg { padding: 16px 36px; font-size: 1rem; letter-spacing: 0.01em; }
.btn-block { width: 100%; }

/* ========== HEADER ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: rgba(7, 7, 10, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.site-header.is-scrolled {
  background: rgba(7, 7, 10, 0.92);
  border-bottom-color: var(--line);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 24px;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.logo-mark { flex-shrink: 0; color: var(--gold); }
.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}
.logo-main {
  font-family: var(--font-en);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.12em;
  color: var(--gold-light);
}
.logo-sub {
  font-family: var(--font-en);
  font-weight: 500;
  font-size: 0.7rem;
  letter-spacing: 0.28em;
  color: var(--text-muted);
}

/* Nav */
.primary-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  font-family: var(--font-en);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
}
.nav-link:hover,
.nav-link.active {
  color: var(--gold-light);
  background: rgba(212, 168, 75, 0.08);
}
.nav-login {
  border: 1px solid var(--line);
  margin-inline-start: 8px;
}
.nav-login:hover {
  border-color: var(--gold);
  background: rgba(212, 168, 75, 0.1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.header-cta { display: none; }

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 8px;
  cursor: pointer;
  padding: 0 10px;
}
.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--gold);
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ========== HERO ========== */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + 40px) 0 60px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, transparent 0%, rgba(7,7,10,0.55) 70%, rgba(7,7,10,0.85) 100%),
    linear-gradient(180deg, rgba(7,7,10,0.4) 0%, transparent 30%, transparent 60%, rgba(7,7,10,0.9) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 40px;
}

.hero-text { max-width: 820px; }

.hero-title {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}
.title-fa {
  font-size: clamp(2rem, 5.5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.25;
  background: linear-gradient(135deg, #f8f0d8 0%, var(--gold-light) 40%, var(--gold) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 40px rgba(212, 168, 75, 0.15);
}
.title-en {
  font-family: var(--font-en);
  font-size: clamp(0.85rem, 2vw, 1.1rem);
  font-weight: 600;
  letter-spacing: 0.22em;
  color: var(--gold);
  text-transform: uppercase;
}

.hero-desc {
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  color: var(--text-muted);
  max-width: 560px;
  margin-inline: auto;
  line-height: 1.8;
}

/* Service Cards in Hero */
.hero-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  width: 100%;
  max-width: 960px;
}

.service-card {
  background: rgba(12, 12, 16, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 22px 24px;
  text-align: center;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}
.service-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-strong);
  box-shadow: 0 16px 40px rgba(0,0,0,0.45), 0 0 0 1px rgba(212,168,75,0.1);
}

.card-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(212,168,75,0.15), rgba(184,134,11,0.08));
  border: 1px solid var(--line);
  color: var(--gold);
  margin-bottom: 4px;
}

.card-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
}

.card-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  flex-grow: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gold);
  padding: 8px 16px;
  border-radius: 999px;
  border: 1px solid var(--line);
  margin-top: 8px;
  transition: all var(--transition);
}
.card-link:hover {
  background: rgba(212, 168, 75, 0.12);
  border-color: var(--gold);
}

.hero-cta { margin-top: 8px; }

/* ========== SECTIONS ========== */
.section {
  padding: clamp(64px, 8vw, 110px) 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}
.section-eyebrow {
  display: inline-block;
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section-title {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}
.section-lead {
  color: var(--text-muted);
  font-size: 1.05rem;
  line-height: 1.8;
}

/* About */
.about-section {
  background: var(--bg-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.about-card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 26px;
  transition: border-color var(--transition), transform var(--transition);
}
.about-card:hover {
  border-color: var(--line-strong);
  transform: translateY(-4px);
}
.about-num {
  font-family: var(--font-en);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.about-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.about-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.75;
}

/* Consulting CTA box */
.consulting-section { padding-top: 0; }
.consulting-box {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  background: linear-gradient(135deg, rgba(212,168,75,0.1) 0%, rgba(12,12,16,0.9) 50%, rgba(184,134,11,0.08) 100%);
  border: 1px solid var(--line-strong);
  border-radius: calc(var(--radius) + 4px);
  padding: 40px 48px;
  box-shadow: var(--shadow);
}
.consulting-content h2 {
  font-size: clamp(1.3rem, 2.8vw, 1.7rem);
  font-weight: 800;
  margin-bottom: 10px;
  line-height: 1.35;
}
.consulting-content p {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 480px;
}

/* Contact */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 40px;
  align-items: start;
}

.contact-form {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 32px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group {
  margin-bottom: 18px;
}
.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-muted);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background: rgba(0,0,0,0.3);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(212, 168, 75, 0.15);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1.5l5 5 5-5' stroke='%23d4a84b' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: left 16px center;
  padding-inline-start: 40px;
}

.form-note {
  margin-top: 14px;
  font-size: 0.8rem;
  color: var(--text-dim);
  text-align: center;
}

.contact-info {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.info-item strong {
  display: block;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}
.info-item a {
  font-size: 1.05rem;
  color: var(--gold-light);
  font-weight: 500;
}
.info-item a:hover { color: var(--gold); }

.info-social {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}
.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  border: 1px solid var(--line);
  color: var(--text-muted);
  transition: all var(--transition);
}
.social-link:hover {
  color: var(--gold);
  border-color: var(--gold);
  background: rgba(212, 168, 75, 0.1);
}

/* ========== FOOTER ========== */
.site-footer {
  background: var(--bg-2);
  border-top: 1px solid var(--line);
  padding-top: 40px;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 32px;
}
.footer-links {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.footer-links a {
  font-family: var(--font-en);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: 6px;
}
.footer-links a:hover { color: var(--gold-light); }

.footer-social {
  display: flex;
  gap: 10px;
}
.footer-social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid var(--line);
  color: var(--text-muted);
  transition: all var(--transition);
}
.footer-social a:hover {
  color: var(--gold);
  border-color: var(--gold);
}

.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 18px 0;
  text-align: center;
}
.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-dim);
  font-family: var(--font-en);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 980px) {
  .hero-cards {
    grid-template-columns: 1fr;
    max-width: 420px;
  }
  .about-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-inline: auto;
  }
  .consulting-box {
    flex-direction: column;
    text-align: center;
    padding: 32px 28px;
  }
  .consulting-content p { margin-inline: auto; }
  .contact-wrapper {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 820px) {
  .primary-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(7, 7, 10, 0.97);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: 24px 20px;
    gap: 4px;
    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 0.3s, opacity 0.3s, visibility 0.3s;
    z-index: 999;
  }
  .primary-nav.is-open {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }
  .nav-link {
    font-size: 1rem;
    padding: 14px 18px;
    border-radius: 10px;
  }
  .nav-login { margin-inline-start: 0; margin-top: 12px; text-align: center; }
  .menu-toggle { display: flex; }
  .header-cta { display: none; }
  body.nav-open { overflow: hidden; }
}

@media (max-width: 600px) {
  :root { --header-h: 64px; }
  .container { width: min(100% - 28px, var(--container)); }
  .logo-text { display: none; }
  .hero {
    padding: calc(var(--header-h) + 32px) 0 48px;
  }
  .title-fa { font-size: 1.85rem; }
  .service-card { padding: 24px 18px 20px; }
  .contact-form { padding: 28px 20px; }
  .footer-inner {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .footer-links { justify-content: center; }
}

@media (min-width: 821px) {
  .header-cta { display: inline-flex; }
}

/* Reduce motion */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}