:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --dark: #0b1220;
  --dark-2: #111c30;
  --text: #172033;
  --muted: #697386;
  --primary: #d99b2b;
  --primary-dark: #b77d17;
  --border: #e7eaf0;
  --shadow: 0 18px 50px rgba(10, 20, 35, .09);
  --radius: 22px;
  --container: 1160px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { 
  scroll-behavior: smooth; 
  -webkit-text-size-adjust: 100%;
}
body {
  font-family: "Vazirmatn", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, Tahoma, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.9;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01" on, "cv01" on;
}
input, textarea, button, select {
  font-family: inherit;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(var(--container), calc(100% - 40px)); margin-inline: auto; }
.section { padding: 100px 0; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary-dark);
  font-weight: 800;
  font-size: .92rem;
  margin-bottom: 12px;
}
.eyebrow::before {
  content: "";
  width: 28px;
  height: 3px;
  border-radius: 10px;
  background: var(--primary);
}
.section-title {
  font-size: clamp(2rem, 4vw, 3.15rem);
  line-height: 1.25;
  letter-spacing: -.8px;
  margin-bottom: 18px;
  color: var(--dark);
}
.section-text {
  color: var(--muted);
  max-width: 720px;
}

/* Header */
.header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 1000;
  transition: .3s ease;
}
.header.scrolled {
  background: rgba(11,18,32,.94);
  backdrop-filter: blur(14px);
  box-shadow: 0 10px 30px rgba(0,0,0,.12);
}
.nav {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
}
.logo {
  color: #fff;
  font-size: 1.35rem;
  font-weight: 900;
  white-space: nowrap;
}
.logo span { color: var(--primary); }
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  color: #e9edf5;
  font-size: .94rem;
}
.nav-links a { transition: .2s; }
.nav-links a:hover { color: var(--primary); }
.nav-cta {
  background: var(--primary);
  color: #111;
  padding: 10px 18px;
  border-radius: 12px;
  font-weight: 800;
}
.nav-cta:hover { background: #efb43f; color: #111 !important; }

/* Hero */
.hero {
  min-height: 780px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 75% 25%, rgba(217,155,43,.18), transparent 30%),
    linear-gradient(135deg, #07101e 0%, #101b2e 55%, #17253c 100%);
  color: #fff;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: .12;
  background-image:
    linear-gradient(rgba(255,255,255,.18) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.18) 1px, transparent 1px);
  background-size: 70px 70px;
  mask-image: linear-gradient(to bottom, #000, transparent);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding-top: 90px;
}
.hero-badge {
  display: inline-flex;
  padding: 8px 14px;
  border: 1px solid rgba(217,155,43,.45);
  background: rgba(217,155,43,.08);
  border-radius: 100px;
  color: #f2c66e;
  font-size: .88rem;
  margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(2.7rem, 6vw, 5.2rem);
  line-height: 1.12;
  letter-spacing: -1.8px;
  margin-bottom: 24px;
}
.hero h1 strong { color: var(--primary); }
.hero p {
  color: #c7d0df;
  font-size: clamp(1rem, 2vw, 1.2rem);
  max-width: 700px;
  margin-bottom: 34px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 14px;
  font-weight: 800;
  transition: transform .2s, background .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--primary); color: #111; }
.btn-secondary {
  border: 1px solid rgba(255,255,255,.22);
  color: #fff;
  background: rgba(255,255,255,.05);
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 34px;
  margin-top: 58px;
}
.stat strong { display: block; color: #fff; font-size: 1.35rem; }
.stat span { color: #aeb9ca; font-size: .88rem; }

/* Services */
.services-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 30px;
  margin-bottom: 46px;
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}
.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 24px;
  box-shadow: 0 8px 30px rgba(15,25,40,.035);
  transition: .25s ease;
  position: relative;
  overflow: hidden;
}
.service-card::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: var(--primary);
  transform: scaleX(0);
  transform-origin: right;
  transition: .25s;
}
.service-card:hover {
  transform: translateY(-7px);
  box-shadow: var(--shadow);
}
.service-card:hover::after { transform: scaleX(1); }
.icon {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border-radius: 16px;
  background: #fff5df;
  color: var(--primary-dark);
  font-size: 1.65rem;
  margin-bottom: 20px;
}
.service-card h3 { margin-bottom: 9px; color: var(--dark); }
.service-card p { color: var(--muted); font-size: .92rem; }

/* About */
.about {
  background: #fff;
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 70px;
  align-items: center;
}
.about-visual {
  min-height: 480px;
  border-radius: 30px;
  background:
    linear-gradient(145deg, rgba(11,18,32,.96), rgba(27,43,67,.93)),
    radial-gradient(circle at 20% 20%, rgba(217,155,43,.4), transparent 30%);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.about-visual::before {
  content: "حفاری";
  position: absolute;
  font-size: 8rem;
  font-weight: 900;
  color: rgba(255,255,255,.035);
  left: 25px;
  bottom: 0;
}
.about-card {
  position: absolute;
  left: 28px;
  right: 28px;
  bottom: 28px;
  padding: 24px;
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(10px);
  border-radius: 20px;
  color: #fff;
}
.about-card strong { color: var(--primary); font-size: 1.3rem; }
.about-copy p { color: var(--muted); margin-bottom: 20px; }
.checks {
  list-style: none;
  display: grid;
  gap: 13px;
  margin-top: 25px;
}
.checks li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-weight: 600;
}
.checks li::before {
  content: "✓";
  flex: 0 0 24px;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: #fff2d2;
  color: var(--primary-dark);
  font-weight: 900;
  line-height: 1;
}

/* Process */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.process {
  padding: 30px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.number {
  color: var(--primary-dark);
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 8px;
}
.process h3 { margin-bottom: 8px; }
.process p { color: var(--muted); font-size: .92rem; }

/* CTA */
.cta {
  padding: 75px 0;
  background: var(--dark);
  color: #fff;
}
.cta-box {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 35px;
}
.cta h2 { font-size: clamp(1.9rem, 4vw, 3rem); line-height: 1.3; }
.cta p { color: #aeb9ca; margin-top: 10px; }

/* FAQ */
.faq-grid {
  max-width: 850px;
  margin: 45px auto 0;
  display: grid;
  gap: 12px;
}
details {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 0 22px;
}
summary {
  cursor: pointer;
  list-style: none;
  font-weight: 800;
  padding: 20px 0;
}
summary::-webkit-details-marker { display: none; }
details p {
  color: var(--muted);
  padding: 0 0 20px;
  font-size: .94rem;
}

/* Contact */
.contact {
  background: #fff;
}
.contact-grid {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 30px;
  margin-top: 45px;
}
.contact-info, .contact-form {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
}
.contact-info { background: var(--dark); color: #fff; }
.contact-info p { color: #b8c2d1; margin: 10px 0 30px; }
.contact-item {
  display: flex;
  gap: 14px;
  padding: 17px 0;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.contact-item:last-child { border-bottom: 0; }
.contact-item span { color: var(--primary); font-size: 1.2rem; }
.contact-item small { display: block; color: #8f9caf; }
.contact-form { background: #fafbfc; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.field { display: grid; gap: 7px; }
.field.full { grid-column: 1/-1; }
label { font-size: .88rem; font-weight: 700; }
input, textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 12px;
  padding: 13px 14px;
  font: inherit;
  outline: none;
}
input:focus, textarea:focus { border-color: var(--primary); }
textarea { min-height: 130px; resize: vertical; }
.form-note { color: var(--muted); font-size: .78rem; margin-top: 10px; }
.form-status {
  margin-top: 14px;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: .92rem;
  line-height: 1.6;
  animation: fadeIn .3s ease;
}
.form-status.success {
  background: #e6f7ec;
  color: #0d6832;
  border: 1px solid #b7ebd0;
}
.form-status.error {
  background: #fdf2f2;
  color: #9b1c1c;
  border: 1px solid #f8b4b4;
}
button:disabled {
  opacity: .65;
  cursor: not-allowed;
}
.btn-spinner {
  display: inline-block;
  margin-right: 6px;
  animation: spin 1s infinite linear;
}
@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Footer */
footer {
  background: #070d17;
  color: #b5bfce;
  padding: 28px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}
.footer-logo { color: #fff; font-weight: 900; }
.footer-logo span { color: var(--primary); }
.back-top {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 12px;
}

/* Project imagery */
.stats-section {
  background: #0b1220;
  color: #fff;
  padding: 70px 0;
  position: relative;
  overflow: hidden;
}
.stats-section::before {
  content: "";
  position: absolute;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: rgba(217,155,43,.10);
  left: -180px;
  top: -180px;
  filter: blur(10px);
}
.stats-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 30px;
  margin-bottom: 35px;
  position: relative;
  z-index: 1;
}
.stats-head .section-title { color: #fff; margin-bottom: 0; }
.stats-head .section-text { color: #aeb9ca; }
.demo-note {
  display: inline-flex;
  margin-top: 12px;
  padding: 6px 11px;
  border-radius: 999px;
  background: rgba(217,155,43,.12);
  border: 1px solid rgba(217,155,43,.28);
  color: #f2c66e;
  font-size: .76rem;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  position: relative;
  z-index: 1;
}
.stat-card {
  padding: 26px 22px;
  border: 1px solid rgba(255,255,255,.10);
  background: rgba(255,255,255,.045);
  border-radius: 20px;
  backdrop-filter: blur(8px);
}
.stat-card strong {
  display: block;
  color: #fff;
  font-size: 2.25rem;
  line-height: 1.1;
  margin-bottom: 8px;
}
.stat-card span { color: #b7c1d0; font-size: .88rem; }
.progress {
  height: 7px;
  margin-top: 16px;
  border-radius: 20px;
  background: rgba(255,255,255,.10);
  overflow: hidden;
}
.progress i {
  display: block;
  height: 100%;
  width: var(--value);
  border-radius: inherit;
  background: var(--primary);
}

.projects {
  background: #f0f2f5;
}
.projects-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 30px;
  margin-bottom: 45px;
}
.project-grid {
  display: grid;
  grid-template-columns: 1.35fr .8fr .8fr;
  grid-auto-rows: 270px;
  gap: 16px;
}
.project-card {
  position: relative;
  min-height: 270px;
  overflow: hidden;
  border-radius: 22px;
  background: #182235;
  box-shadow: 0 12px 35px rgba(12,20,32,.10);
}
.project-card:first-child { grid-row: span 2; }
.project-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.project-card:hover img { transform: scale(1.05); }
.project-overlay {
  position: absolute;
  inset: 35% 0 0;
  display: flex;
  flex-direction: column;
  justify-content: end;
  padding: 25px;
  color: #fff;
  background: linear-gradient(to bottom, transparent, rgba(5,10,18,.88));
}
.project-overlay small { color: #f2c66e; margin-bottom: 5px; }
.project-overlay h3 { font-size: 1.2rem; }

.metrics {
  margin-top: 35px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.metric-box {
  padding: 25px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 20px;
}
.metric-top {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-weight: 800;
  margin-bottom: 10px;
}
.metric-top b { color: var(--primary-dark); }
.metric-bar {
  height: 10px;
  border-radius: 20px;
  background: #edf0f4;
  overflow: hidden;
}
.metric-bar i {
  display: block;
  width: var(--value);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--primary-dark), var(--primary));
}
.metric-box small { display: block; color: var(--muted); margin-top: 10px; }

/* Mobile */
.menu-btn {
  display: none;
  border: 0;
  background: transparent;
  color: #fff;
  font-size: 1.6rem;
  cursor: pointer;
}
@media (max-width: 900px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .about-visual { min-height: 360px; }
  .process-grid { grid-template-columns: 1fr; }
  .cta-box { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 720px) {
  .container { width: min(var(--container), calc(100% - 28px)); }
  .section { padding: 72px 0; }
  .nav-links {
    position: absolute;
    top: 70px;
    right: 14px;
    left: 14px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: #0b1220;
    padding: 10px;
    border-radius: 16px;
    box-shadow: var(--shadow);
  }
  .nav-links.open { display: flex; }
  .nav-links a { display: block; padding: 11px 12px; }
  .nav-cta { text-align: center; }
  .menu-btn { display: block; }
  .hero { min-height: 720px; }
  .hero h1 { font-size: 2.65rem; }
  .hero-stats { gap: 20px; }
  .services-head { display: block; }
  .services-grid { grid-template-columns: 1fr; }

  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .project-grid { grid-template-columns: 1fr 1fr; grid-auto-rows: 230px; }
  .project-card:first-child { grid-row: span 1; }
  .metrics { grid-template-columns: 1fr; }

  .form-grid { grid-template-columns: 1fr; }
  .field.full { grid-column: auto; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}