/* ═══════════════════════════════════════════════════
   BMI C&S Corporate Website — Apple.com Inspired
   Clean, Minimal, Large Typography, Generous Spacing
   ═══════════════════════════════════════════════════ */

@import url('https://cdn.jsdelivr.net/gh/fonts-archive/Paperlogy/subsets/Paperlogy-dynamic-subset.css');

:root {
  --color-fill: #f5f5f7;
  --color-fill-secondary: #fbfbfd;
  --color-text-primary: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-text-muted: #86868b;
  --color-link: #0071e3;
  --color-link-hover: #0077ed;
  --color-border: #d2d2d7;
  --color-border-light: #e8e8ed;
  --color-white: #ffffff;
  --color-black: #000000;
  --color-hero-bg: #0a1628;
  --color-accent: #2997ff;
  --color-green: #30d158;
  --font-sans: 'Paperlogy', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--color-text-primary);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.47059;
  font-weight: 400;
  letter-spacing: -0.022em;
}

/* ═══════════════════════════════════════════
   NAVIGATION — 2-tier centered layout
   ═══════════════════════════════════════════ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 9999;
  background: #ffffff;
  border-bottom: 1px solid #e7e7e7;
}
.nav-upper {
  display: flex; align-items: center; justify-content: center;
  padding: 20px 22px 12px;
  position: relative;
  max-width: 1280px; margin: 0 auto;
}
.nav-logo {
  text-decoration: none; display: flex; align-items: center;
}
.nav-lower {
  border-top: 1px solid #f0f0f0;
}
.nav-links {
  display: flex; gap: 100px; align-items: center; justify-content: center;
  max-width: 1280px; margin: 0 auto;
  padding: 14px 22px;
}
.nav-links a {
  font-size: 15px; font-weight: 600; color: var(--color-text-secondary);
  text-decoration: none; transition: color 0.3s;
  letter-spacing: -0.01em;
  font-family: var(--font-sans);
}
.nav-links a:hover { color: var(--color-text-primary); }

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  background: none; border: none; cursor: pointer;
  width: 36px; height: 36px; align-items: center; justify-content: center;
  position: absolute; right: 22px; top: 50%; transform: translateY(-50%);
}
.nav-toggle svg { stroke: var(--color-text-primary); }
.nav-links.open {
  display: flex !important;
  position: fixed; top: 100px; left: 0; right: 0;
  flex-direction: column; align-items: stretch;
  background: #ffffff;
  padding: 16px 24px 24px; gap: 0;
  border-bottom: 1px solid #e7e7e7;
  z-index: 9998;
}
.nav-links.open a {
  padding: 12px 0; font-size: 15px;
  border-bottom: 0.5px solid var(--color-border-light);
}
.nav-links.open a:last-child {
  border-bottom: none;
}

/* ═══════════════════════════════════════════
   HERO — Full-screen, dark background, huge type
   ═══════════════════════════════════════════ */
.hero {
  min-height: 70vh;
  display: flex; align-items: center; justify-content: center;
  background: var(--color-hero-bg);
  position: relative; overflow: hidden;
  padding: 100px 0 0;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 50%, rgba(41,151,255,0.15) 0%, transparent 60%);
}
.hero-content {
  position: relative; z-index: 1;
  text-align: center;
  max-width: 780px;
  padding: 0 24px;
}
.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 980px;
  background: rgba(255,255,255,0.08);
  color: var(--color-accent);
  font-size: clamp(12px, 1.3vw, 14px);
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}
.hero h1 {
  font-size: clamp(28px, 5vw, 56px);
  font-weight: 700;
  color: var(--color-white);
  line-height: 1.07143;
  letter-spacing: -0.005em;
  margin-bottom: 16px;
}
.hero h1 .gradient-text {
  background: linear-gradient(90deg, var(--color-accent), var(--color-green));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p {
  font-size: clamp(16px, 2vw, 21px);
  font-weight: 400;
  color: var(--color-text-muted);
  line-height: 1.381;
  letter-spacing: 0.011em;
  margin-bottom: 28px;
}
.hero-buttons {
  display: flex; gap: 16px; justify-content: center;
}
.btn-primary {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 980px;
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 400;
  background: var(--color-accent);
  color: var(--color-white);
  text-decoration: none;
  transition: background 0.3s;
  letter-spacing: -0.022em;
}
.btn-primary:hover { background: var(--color-link-hover); }
.btn-secondary {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 980px;
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 400;
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.3s;
  letter-spacing: -0.022em;
}
.btn-secondary:hover { text-decoration: underline; }

/* ═══════════════════════════════════════════
   SECTIONS — Large padding, centered content
   ═══════════════════════════════════════════ */
.section { padding: clamp(56px, 8vw, 100px) 0; }
.section-dark { background: var(--color-black); color: var(--color-white); }
.section-light { background: var(--color-fill); }
.section-inner {
  max-width: 980px; margin: 0 auto; padding: 0 22px;
}
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 8px;
}
.section-dark .section-label { color: var(--color-text-muted); }
.section-title {
  font-size: clamp(26px, 4.5vw, 48px);
  font-weight: 700;
  line-height: 1.08349;
  letter-spacing: -0.003em;
}
.section-dark .section-title { color: var(--color-white); }
.section-desc {
  font-size: clamp(15px, 1.8vw, 19px);
  font-weight: 400;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 12px auto 0;
  line-height: 1.4211;
  letter-spacing: 0.012em;
}
.section-dark .section-desc { color: var(--color-text-muted); }

/* ═══════════════════════════════════════════
   CARDS — Rounded, subtle shadow
   ═══════════════════════════════════════════ */
.card-grid { display: grid; gap: 16px; }
.card-grid-2 { grid-template-columns: repeat(2, 1fr); }
.card-grid-3 { grid-template-columns: repeat(3, 1fr); }
.card-grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--color-white);
  border-radius: 18px;
  padding: 36px 32px;
  transition: transform 0.4s cubic-bezier(.25,.1,.25,1), box-shadow 0.4s;
  border: none;
  box-shadow: 0 0 0 0.5px rgba(0,0,0,0.04);
}
.card:hover {
  transform: scale(1.02);
  box-shadow: 0 8px 36px rgba(0,0,0,0.08);
}
.card-icon {
  width: 48px; height: 48px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 22px; margin-bottom: 16px;
  background: var(--color-fill);
}
.card h3 {
  font-size: clamp(16px, 1.8vw, 19px); font-weight: 700; margin-bottom: 8px;
  letter-spacing: -0.012em; line-height: 1.21053;
}
.card p {
  font-size: 14px; color: var(--color-text-secondary);
  line-height: 1.42859; letter-spacing: -0.016em;
}

/* Glass cards (dark sections) */
.glass-card {
  background: rgba(255,255,255,0.04);
  border-radius: 18px;
  padding: 32px;
  border: 0.5px solid rgba(255,255,255,0.08);
}
.glass-card h3 { color: var(--color-white); font-size: 17px; font-weight: 600; margin-bottom: 8px; }
.glass-card p { color: var(--color-text-muted); font-size: 14px; line-height: 1.6; }

/* ═══════════════════════════════════════════
   STATS — Apple keynote-style big numbers
   ═══════════════════════════════════════════ */
.stats-row {
  display: flex; justify-content: center; gap: 0;
  padding: 40px 0;
}
.stat-item {
  text-align: center; flex: 1;
  padding: 20px 0;
}
.stat-item + .stat-item {
  border-left: 0.5px solid rgba(255,255,255,0.08);
}
.stat-number {
  font-size: clamp(32px, 5vw, 56px); font-weight: 700; color: var(--color-white);
  letter-spacing: -0.04em; line-height: 1.07;
}
.stat-number .accent { color: var(--color-green); }
.stat-label {
  font-size: 12px; color: var(--color-text-muted);
  margin-top: 4px; font-weight: 500;
  letter-spacing: 0.008em;
}

/* ═══════════════════════════════════════════
   CLIENT LOGOS
   ═══════════════════════════════════════════ */
.client-logos {
  display: flex; justify-content: center; align-items: center;
  gap: 40px; flex-wrap: wrap; padding: 16px 0;
}
.client-logo {
  font-size: 15px; font-weight: 600; color: var(--color-text-muted);
  opacity: 0.6; transition: opacity 0.3s;
}
.client-logo:hover { opacity: 1; }

/* ═══════════════════════════════════════════
   VALUES
   ═══════════════════════════════════════════ */
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.value-item { text-align: center; padding: 32px 20px; }
.value-icon { font-size: 36px; margin-bottom: 12px; }
.value-item h3 { font-size: 17px; font-weight: 600; margin-bottom: 6px; }
.value-item p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.5; }

/* ═══════════════════════════════════════════
   SOLUTION DETAIL — Alternating layout
   ═══════════════════════════════════════════ */
.solution-detail {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px;
  align-items: center; padding: 72px 0;
  border-bottom: 0.5px solid var(--color-border-light);
}
.solution-detail:last-child { border-bottom: none; }
.solution-detail.reverse { direction: rtl; }
.solution-detail.reverse > * { direction: ltr; }
.solution-detail h3 {
  font-size: clamp(22px, 2.5vw, 28px); font-weight: 700; margin-bottom: 12px;
  letter-spacing: -0.015em; line-height: 1.14286;
}
.solution-detail p {
  font-size: 14px; color: var(--color-text-secondary);
  margin-bottom: 20px; line-height: 1.57143;
}
.solution-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  padding: 7px 16px; border-radius: 980px; font-size: 14px; font-weight: 500;
  background: var(--color-fill); color: var(--color-text-secondary);
  letter-spacing: 0;
}
.solution-visual {
  background: var(--color-fill); border-radius: 20px; height: 300px;
  display: flex; align-items: center; justify-content: center;
  font-size: 48px;
  position: relative; overflow: hidden;
}
.solution-visual img {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover;
}
.solution-visual .sv-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(10,22,40,0.82) 0%, rgba(26,58,92,0.65) 100%);
  z-index: 1;
}
.solution-visual .sv-text {
  position: relative; z-index: 2;
  text-align: center; padding: 20px;
}
.solution-visual .sv-text .sv-title {
  font-size: 22px; font-weight: 800; color: #ffffff;
  letter-spacing: -0.02em; line-height: 1.3;
  text-shadow: 0 2px 20px rgba(41,151,255,0.4);
  margin-bottom: 6px;
}
.solution-visual .sv-text .sv-subtitle {
  font-size: 11px; font-weight: 500; color: rgba(255,255,255,0.55);
  letter-spacing: 0.12em; text-transform: uppercase;
}
.solution-visual .sv-glow {
  position: absolute; z-index: 1;
  width: 200px; height: 200px; border-radius: 50%;
  background: radial-gradient(circle, rgba(41,151,255,0.25) 0%, transparent 70%);
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  pointer-events: none;
}

/* ═══════════════════════════════════════════
   PORTFOLIO
   ═══════════════════════════════════════════ */
.portfolio-card {
  background: var(--color-white); border-radius: 18px; overflow: hidden;
  transition: transform 0.4s cubic-bezier(.25,.1,.25,1), box-shadow 0.4s;
  box-shadow: 0 0 0 0.5px rgba(0,0,0,0.04);
}
.portfolio-card:hover { transform: scale(1.02); box-shadow: 0 8px 36px rgba(0,0,0,0.08); }
.portfolio-thumb {
  height: 200px;
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 36px;
}
.portfolio-info { padding: 24px 28px; }
.portfolio-info h3 { font-size: clamp(15px, 1.6vw, 17px); font-weight: 600; margin-bottom: 4px; letter-spacing: -0.01em; }
.portfolio-info p { font-size: 13px; color: var(--color-text-secondary); line-height: 1.6; }
.portfolio-category {
  display: inline-block; padding: 4px 10px; border-radius: 980px;
  font-size: 11px; font-weight: 500; background: var(--color-fill);
  color: var(--color-text-secondary); margin-top: 12px;
}

/* ═══════════════════════════════════════════
   CONTACT FORM
   ═══════════════════════════════════════════ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-group label {
  display: block; font-size: 12px; font-weight: 600;
  color: var(--color-text-primary); margin-bottom: 6px;
  letter-spacing: 0.02em;
}
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 12px 16px; border: 1px solid var(--color-border);
  border-radius: 12px; font-size: 14px; font-family: inherit;
  transition: border-color 0.3s, box-shadow 0.3s;
  background: var(--color-white);
  letter-spacing: -0.016em;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(41,151,255,0.15);
}
.form-group textarea { min-height: 140px; resize: vertical; }
.form-submit {
  padding: 12px 28px; border: none; border-radius: 980px;
  background: var(--color-accent); color: var(--color-white);
  font-size: 17px; font-weight: 400; font-family: inherit;
  cursor: pointer; transition: background 0.3s;
  align-self: flex-start; letter-spacing: -0.022em;
}
.form-submit:hover { background: var(--color-link-hover); }

.contact-info-card {
  background: var(--color-fill); border-radius: 18px; padding: 28px;
  margin-bottom: 16px;
}
.contact-info-card h4 { font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.contact-info-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.5; }

/* ═══════════════════════════════════════════
   FOOTER — Apple-style minimal footer
   ═══════════════════════════════════════════ */
.footer {
  background: var(--color-fill);
  padding: 20px 0 12px;
  border-top: 0.5px solid var(--color-border);
}
.footer-inner {
  max-width: 980px; margin: 0 auto; padding: 0 22px;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px;
  padding-bottom: 16px;
  border-bottom: 0.5px solid var(--color-border);
}
.footer h4 {
  font-size: 12px; font-weight: 600; color: var(--color-text-primary);
  margin-bottom: 12px; letter-spacing: 0;
}
.footer p, .footer a {
  font-size: 12px; color: var(--color-text-secondary);
  text-decoration: none; line-height: 1.8;
  display: block;
}
.footer a:hover { color: var(--color-link); text-decoration: underline; }
.footer-bottom {
  max-width: 980px; margin: 0 auto; padding: 12px 22px 0;
  font-size: 12px; color: var(--color-text-muted);
}

/* ═══════════════════════════════════════════
   INQUIRY MODAL
   ═══════════════════════════════════════════ */
.modal-backdrop {
  display: none; position: fixed; inset: 0; z-index: 10000;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  align-items: center; justify-content: center;
}
.modal-backdrop.active { display: flex; }
.modal {
  background: var(--color-white); border-radius: 20px;
  width: 100%; max-width: 520px; max-height: 90vh; overflow-y: auto;
  padding: 40px 36px 32px; position: relative;
  box-shadow: 0 24px 80px rgba(0,0,0,0.2);
  margin: 16px;
}
.modal-close {
  position: absolute; top: 16px; right: 16px;
  width: 32px; height: 32px; border-radius: 50%;
  border: none; background: var(--color-fill); cursor: pointer;
  font-size: 18px; color: var(--color-text-secondary);
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s;
}
.modal-close:hover { background: var(--color-border-light); }
.modal h2 {
  font-size: clamp(20px, 2.2vw, 24px); font-weight: 700; margin-bottom: 4px;
  letter-spacing: -0.02em;
}
.modal .modal-desc {
  font-size: 14px; color: var(--color-text-secondary);
  margin-bottom: 24px; line-height: 1.5;
}
.modal .form-group { margin-bottom: 16px; }
.modal .form-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
}
.modal .form-group label {
  display: block; font-size: 13px; font-weight: 600;
  color: var(--color-text-primary); margin-bottom: 6px;
}
.modal .form-group label .required {
  color: #ff3b30; margin-left: 2px;
}
.modal .form-group input,
.modal .form-group textarea {
  width: 100%; padding: 11px 14px; border: 1px solid var(--color-border);
  border-radius: 10px; font-size: 14px; font-family: inherit;
  transition: border-color 0.3s, box-shadow 0.3s;
  background: var(--color-white);
}
.modal .form-group input:focus,
.modal .form-group textarea:focus {
  outline: none; border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(41,151,255,0.12);
}
.modal .form-group textarea { min-height: 100px; resize: vertical; }
.modal .privacy-consent {
  display: flex; align-items: flex-start; gap: 10px;
  margin: 20px 0 8px; padding: 14px 16px;
  background: var(--color-fill); border-radius: 12px;
}
.modal .privacy-consent input[type="checkbox"] {
  margin-top: 3px; width: 16px; height: 16px; flex-shrink: 0;
  accent-color: var(--color-accent);
}
.modal .privacy-consent label {
  font-size: 13px; color: var(--color-text-secondary); line-height: 1.5;
  cursor: pointer;
}
.modal .privacy-consent label a {
  color: var(--color-link); text-decoration: underline;
}
.modal .modal-submit {
  width: 100%; padding: 14px; border: none; border-radius: 12px;
  background: var(--color-accent); color: var(--color-white);
  font-size: 16px; font-weight: 600; font-family: inherit;
  cursor: pointer; transition: background 0.3s;
  margin-top: 12px;
}
.modal .modal-submit:hover { background: var(--color-link-hover); }
.modal .modal-submit:disabled {
  background: var(--color-border); cursor: not-allowed;
}

/* ═══════════════════════════════════════════
   RESPONSIVE — Tablet (≤ 834px)
   ═══════════════════════════════════════════ */
@media (max-width: 834px) {
  .card-grid-2, .card-grid-3 { grid-template-columns: 1fr 1fr; }
  .card-grid-4 { grid-template-columns: 1fr 1fr; }
  .solution-detail { grid-template-columns: 1fr; gap: 32px; padding: 48px 0; }
  .solution-detail.reverse { direction: ltr; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .stats-row { flex-wrap: wrap; }
  .stat-item { min-width: 50%; }
  .nav-lower { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open { top: 70px; }
  .hero { padding-top: 70px; }
  .hero-buttons { flex-direction: column; align-items: center; }
  .value-grid { grid-template-columns: 1fr 1fr; }

  /* Inline grid overrides for tablet */
  [style*="grid-template-columns: 1fr 1fr"][style*="gap:80px"] {
    grid-template-columns: 1fr !important;
    gap: 40px !important;
  }
  [style*="grid-template-columns: repeat(4"] {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  /* Modal responsive */
  .modal { padding: 32px 24px 24px; }
  .modal .form-row { grid-template-columns: 1fr; }
}

/* ═══════════════════════════════════════════
   RESPONSIVE — Mobile (≤ 480px)
   ═══════════════════════════════════════════ */
@media (max-width: 480px) {
  .hero { min-height: 60vh; padding-top: 60px; }
  .hero-badge { padding: 5px 12px; }
  .btn-primary, .btn-secondary { padding: 10px 22px; }
  .section-header { margin-bottom: 36px; }
  .card-grid-2, .card-grid-3, .card-grid-4 { grid-template-columns: 1fr; }
  .card { padding: 28px 24px; }
  .stat-label { font-size: 11px; }
  .stat-item { min-width: 50%; padding: 12px 0; }
  .footer-inner { grid-template-columns: 1fr; gap: 24px; }
  .value-grid { grid-template-columns: 1fr; }
  .solution-detail { gap: 24px; padding: 36px 0; }
  .solution-visual { height: 220px; }
  .tag { font-size: 12px; padding: 5px 12px; }
  .contact-info-card { padding: 20px; }
  .glass-card { padding: 24px; }
  .client-logos { gap: 20px; }
  .client-logo { font-size: 13px; }

  /* Modal mobile */
  .modal { margin: 8px; padding: 28px 20px 20px; }

  /* All inline grids → single column on mobile */
  [style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
  }
}