/* =============================================
   FUSION MOBILITY INC — Main Stylesheet
   ============================================= */

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

:root {
  --navy:   #0A1628;
  --deep:   #112240;
  --cyan:   #00C9D4;
  --orange: #F26522;
  --light:  #E8EDF3;
  --muted:  #7A8FA6;
  --white:  #FFFFFF;
  --font-display: 'Barlow Condensed', sans-serif;
  --font-body:    'Inter', sans-serif;
  --max-w: 1160px;
  --section-pad: 96px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--navy);
  color: var(--light);
  line-height: 1.65;
  font-size: 16px;
}

a { color: inherit; text-decoration: none; }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section    { padding: var(--section-pad) 0; }
.section-label {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 12px;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 48px;
}

/* ── BUTTONS ── */
.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 14px 32px;
  border-radius: 3px;
  transition: all 0.2s;
  cursor: pointer;
  border: 2px solid transparent;
}
.btn-primary { background: var(--orange); color: var(--white); border-color: var(--orange); }
.btn-primary:hover { background: #d9531c; border-color: #d9531c; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--white); border-color: rgba(255,255,255,0.5); }
.btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); transform: translateY(-1px); }

/* ── HEADER ── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 24px;
  background: rgba(10,22,40,0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,201,212,0.12);
  transition: background 0.3s;
}
.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { display: flex; align-items: baseline; gap: 4px; }
.logo-main { font-family: var(--font-display); font-weight: 800; font-size: 20px; letter-spacing: 0.04em; color: var(--white); }
.logo-sub  { font-family: var(--font-display); font-size: 13px; color: var(--cyan); letter-spacing: 0.12em; }
.nav-links { list-style: none; display: flex; gap: 8px; align-items: center; }
.nav-links a {
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  padding: 8px 14px;
  border-radius: 3px;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--cyan); }
.nav-cta { background: var(--orange) !important; color: var(--white) !important; padding: 8px 20px !important; }
.nav-cta:hover { background: #d9531c !important; }
.nav-toggle { display: none; background: none; border: none; color: var(--white); font-size: 24px; cursor: pointer; }

/* ── HERO ── */
.hero {
  min-height: 100vh;
  background: url('../images/hero-bg.jpg') center/cover no-repeat;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}
/* 좌측만 어둡게, 우측 이미지 선명하게 */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    rgba(8,18,34,0.88) 0%,
    rgba(8,18,34,0.65) 38%,
    rgba(8,18,34,0.18) 62%,
    transparent 100%
  );
  z-index: 0;
  pointer-events: none;
}
.hero-bg-lines { display: none; }
.hero-content {
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
  position: relative;
  z-index: 1;
}
.hero-eyebrow {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 20px;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(48px, 8vw, 90px);
  font-weight: 800;
  line-height: 1.0;
  color: var(--white);
  margin-bottom: 28px;
  text-transform: uppercase;
  text-shadow: 0 2px 24px rgba(0,0,0,0.5);
  max-width: 700px;
}
.hero-accent { color: var(--cyan); }
.hero-sub {
  font-size: 18px;
  color: rgba(232,237,243,0.90);
  margin-bottom: 40px;
  max-width: 480px;
  line-height: 1.7;
  text-shadow: 0 1px 10px rgba(0,0,0,0.6);
}
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ── STATS HOVER ── */
.hero-stats {
  max-width: var(--max-w);
  margin: 60px auto 0;
  width: 100%;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(0,201,212,0.20);
  border: 1px solid rgba(0,201,212,0.20);
  border-radius: 4px;
  position: relative;
  z-index: 1;
}
.stat {
  background: rgba(10,22,40,0.82);
  backdrop-filter: blur(8px);
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: default;
  transition: background 0.3s, transform 0.3s;
  position: relative;
  overflow: hidden;
}
.stat::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: var(--cyan);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}
.stat:hover { background: rgba(0,201,212,0.14); transform: translateY(-4px); }
.stat:hover::before { transform: scaleX(1); }
.stat-num {
  font-family: var(--font-display);
  font-size: 44px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
  transition: color 0.3s, transform 0.3s;
}
.stat:hover .stat-num { color: var(--white); transform: scale(1.08); }
.stat-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  transition: color 0.3s;
}
.stat:hover .stat-label { color: var(--cyan); }

/* ── ABOUT — 배경 이미지 선명하게 ── */
.about {
  background: url('../images/about-bg.jpg') center/cover no-repeat;
  position: relative;
}
.about::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(8,18,34,0.60);  /* 60%만 — 이미지 보임 */
  z-index: 0;
}
.about .container { position: relative; z-index: 1; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.about-text p { color: rgba(232,237,243,0.90); margin-bottom: 20px; font-size: 16px; }
.about-certs { display: flex; flex-direction: column; gap: 20px; }
.cert-item {
  display: flex; gap: 16px; align-items: flex-start;
  padding: 20px;
  background: rgba(8,18,34,0.55);
  border: 1px solid rgba(0,201,212,0.20);
  border-radius: 4px;
  transition: border-color 0.25s, background 0.25s;
}
.cert-item:hover { border-color: var(--cyan); background: rgba(0,201,212,0.10); }
.cert-track { border-color: rgba(242,101,34,0.30); }
.cert-track:hover { border-color: var(--orange); background: rgba(242,101,34,0.08); }
.cert-icon { font-size: 20px; color: var(--cyan); flex-shrink: 0; margin-top: 2px; }
.cert-item strong { display: block; font-size: 14px; font-weight: 600; color: var(--white); margin-bottom: 2px; }
.cert-item span { font-size: 13px; color: var(--muted); }

/* ── SERVICES — 배경 이미지 선명하게 ── */
.services {
  background: url('../images/service-bg.jpg') center/cover no-repeat;
  position: relative;
}
.services::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(8,18,34,0.70);  /* 70%만 */
  z-index: 0;
}
.services .container { position: relative; z-index: 1; }
.services-grid {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 1px; background: rgba(0,201,212,0.10);
  border: 1px solid rgba(0,201,212,0.10);
  border-radius: 4px; overflow: hidden;
}
.service-card {
  background: rgba(8,18,34,0.70);
  padding: 32px 24px;
  display: flex; flex-direction: column; gap: 10px;
  transition: background 0.25s, transform 0.25s;
}
.service-card:hover { background: rgba(0,201,212,0.12); transform: translateY(-3px); }
.service-num { font-family: var(--font-display); font-size: 13px; letter-spacing: 0.12em; color: var(--cyan); font-weight: 600; }
.service-card h3 { font-family: var(--font-display); font-size: 20px; font-weight: 700; color: var(--white); line-height: 1.2; }
.service-card p { font-size: 13px; color: rgba(232,237,243,0.75); line-height: 1.55; flex: 1; }
.card-arrow { font-size: 18px; color: var(--orange); transition: transform 0.25s; }
.service-card:hover .card-arrow { transform: translateX(5px); }

/* ── CLIENTS ── */
.clients { background: var(--deep); }
.clients-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.client-item {
  background: rgba(10,22,40,0.6);
  border: 1px solid rgba(0,201,212,0.12);
  border-radius: 4px; padding: 28px 24px;
  font-family: var(--font-display); font-size: 20px; font-weight: 600;
  color: var(--white); text-align: center; letter-spacing: 0.03em;
  transition: border-color 0.25s, background 0.25s, transform 0.25s;
}
.client-item:hover { border-color: var(--cyan); background: rgba(0,201,212,0.07); transform: translateY(-3px); }

/* ── CTA STRIP ── */
.cta-strip { background: linear-gradient(135deg, var(--orange) 0%, #c44d0f 100%); padding: 64px 24px; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-inner h2 { font-family: var(--font-display); font-size: clamp(24px, 4vw, 40px); font-weight: 700; color: var(--white); }
.cta-strip .btn-primary { background: var(--white); color: var(--orange); border-color: var(--white); }
.cta-strip .btn-primary:hover { background: var(--light); transform: translateY(-2px); }

/* ── FOOTER ── */
.site-footer { background: #060f1c; padding: 64px 24px 0; }
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 48px; padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.footer-brand .logo-main { font-family: var(--font-display); font-weight: 800; font-size: 18px; color: var(--white); }
.footer-brand .logo-sub  { font-family: var(--font-display); font-size: 12px; color: var(--cyan); letter-spacing: 0.12em; }
.footer-brand p { font-size: 13px; color: var(--muted); margin-top: 12px; }
.footer-col strong { font-size: 13px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--cyan); display: block; margin-bottom: 16px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-col li { font-size: 13px; color: rgba(255,255,255,0.55); }
.footer-col a:hover { color: var(--cyan); }
.footer-bottom { text-align: center; padding: 24px 0; font-size: 12px; color: rgba(255,255,255,0.3); }

/* ── SERVICE DETAIL PAGES — 배경 이미지 선명하게 ── */
.page-hero {
  padding: 140px 24px 80px;
  background-size: cover !important;
  background-position: center !important;
  background-repeat: no-repeat !important;
  position: relative;
  overflow: hidden;
}
.page-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(
    to right,
    rgba(8,18,34,0.85) 0%,
    rgba(8,18,34,0.60) 45%,
    rgba(8,18,34,0.20) 70%,
    transparent 100%
  );
  z-index: 0;
}
.page-hero-inner { max-width: var(--max-w); margin: 0 auto; position: relative; z-index: 1; }
.page-hero .service-num { display: block; font-family: var(--font-display); font-size: 13px; letter-spacing: 0.18em; color: var(--cyan); margin-bottom: 16px; }
.page-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 800; color: var(--white);
  text-transform: uppercase; line-height: 1.05; margin-bottom: 20px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.6);
}
.page-hero p { font-size: 18px; color: rgba(232,237,243,0.90); max-width: 560px; line-height: 1.7; text-shadow: 0 1px 8px rgba(0,0,0,0.5); }
.service-detail-body { background: var(--deep); }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; padding: var(--section-pad) 0; }
.detail-points { display: flex; flex-direction: column; gap: 24px; }
.detail-point { padding: 24px; background: rgba(10,22,40,0.5); border-left: 3px solid var(--cyan); border-radius: 0 4px 4px 0; transition: background 0.2s; }
.detail-point:hover { background: rgba(0,201,212,0.07); }
.detail-point h4 { font-family: var(--font-display); font-size: 16px; font-weight: 700; color: var(--white); margin-bottom: 8px; }
.detail-point p { font-size: 14px; color: var(--muted); line-height: 1.6; }
.detail-cta { margin-top: 48px; }
.detail-intro { font-size: 16px; color: rgba(232,237,243,0.8); line-height: 1.75; margin-bottom: 32px; }

/* ── CONTACT ── */
.contact-section { background: var(--deep); padding: var(--section-pad) 24px; }
.contact-grid { max-width: var(--max-w); margin: 0 auto; display: grid; grid-template-columns: 1fr 1.4fr; gap: 64px; }
.contact-info { display: flex; flex-direction: column; gap: 28px; }
.contact-block strong { display: block; font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--cyan); margin-bottom: 8px; }
.contact-block p, .contact-block a { font-size: 15px; color: rgba(232,237,243,0.8); line-height: 1.65; }
.contact-block a:hover { color: var(--cyan); }
.contact-form { display: flex; flex-direction: column; gap: 16px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-field { display: flex; flex-direction: column; gap: 6px; }
.form-field label { font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.form-field input,
.form-field select,
.form-field textarea {
  background: rgba(10,22,40,0.6);
  border: 1px solid rgba(0,201,212,0.2);
  border-radius: 3px; padding: 12px 16px;
  color: var(--white); font-family: var(--font-body); font-size: 15px;
  outline: none; transition: border-color 0.2s;
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus { border-color: var(--cyan); }
.form-field select { appearance: none; }
.form-field textarea { resize: vertical; min-height: 140px; }
.form-submit { margin-top: 8px; }

/* ── PROJECTS ── */
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.project-card {
  background: rgba(17,34,64,0.8);
  border: 1px solid rgba(0,201,212,0.1);
  border-radius: 4px; overflow: hidden;
  transition: border-color 0.25s, transform 0.25s, box-shadow 0.25s;
}
.project-card:hover { border-color: var(--cyan); transform: translateY(-4px); box-shadow: 0 12px 40px rgba(0,201,212,0.12); }
.project-img { width: 100%; height: 220px; background: rgba(10,22,40,0.8); display: flex; align-items: center; justify-content: center; color: var(--muted); font-size: 13px; }
.project-body { padding: 24px; }
.project-meta { font-size: 12px; color: var(--cyan); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 8px; }
.project-body h3 { font-family: var(--font-display); font-size: 20px; color: var(--white); margin-bottom: 10px; }
.project-body p { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --section-pad: 64px; }
  .nav-links {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    background: var(--deep); flex-direction: column;
    padding: 16px 0; border-bottom: 1px solid rgba(0,201,212,0.12);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .hero::before { background: rgba(8,18,34,0.75); }
  .page-hero::before { background: rgba(8,18,34,0.75); }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .services-grid { grid-template-columns: 1fr; }
  .clients-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; text-align: center; }
  .br-desk { display: none; }
}

@media (max-width: 480px) {
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .clients-grid { grid-template-columns: 1fr; }
}