/* ═══════════════════════════════════════════════════════════════
   NOBU Consulting — style.css
   Aesthetic: Industrial precision · Navy + safety orange
   Fonts: Barlow Condensed (headings) + Barlow (body)
   ═══════════════════════════════════════════════════════════════ */

/* ── Variables ── */
:root {
  --navy:        #0d1b2a;
  --navy-mid:    #162336;
  --navy-light:  #1e3250;
  --orange:      #e8ae2a;
  --orange-dark: #c4a31f;
  --cream:       #f5f2ec;
  --white:       #ffffff;
  --gray-100:    #f8f8f6;
  --gray-200:    #ebebeb;
  --gray-500:    #8a8a8a;
  --gray-700:    #3d3d3d;

  --font-head: 'Barlow Condensed', sans-serif;
  --font-body: 'Barlow', sans-serif;

  --radius: 4px;
  --shadow: 0 12px 40px rgba(0,0,0,.12);
  --transition: 0.3s cubic-bezier(.4,0,.2,1);

  --max-w: 1180px;
  --side-pad: clamp(1.25rem, 5vw, 3rem);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-body);
  font-size: 1.1em;
  line-height: 1.7;
  color: var(--gray-700);
  background: var(--white);
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ── Container ── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--side-pad);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .75rem 1.75rem;
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--orange);
  color: var(--white);
  border-color: var(--orange);
}
.btn-primary:hover { background: var(--orange-dark); border-color: var(--orange-dark); }
.btn-ghost {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,.55);
}
.btn-ghost:hover { border-color: var(--white); background: rgba(255,255,255,.08); }
.btn-header {
  background: var(--orange);
  color: var(--white);
  padding: .6rem 1.4rem;
  font-size: .9rem;
}
.btn-header:hover { background: var(--orange-dark); }
.btn-full { width: 100%; justify-content: center; }

/* ── Section shared ── */
.section { padding-block: clamp(4rem, 8vw, 7rem); }
.section-label {
  display: inline-block;
  font-family: var(--font-head);
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: .75rem;
}
.section-header {
  text-align: center;
  max-width: 620px;
  margin-inline: auto;
  margin-bottom: 3.5rem;
}
.section-header h2 { margin-bottom: .75rem; }
.section-header p { color: var(--gray-500); font-size: 1.05rem; }

h2 {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--navy);
  text-transform: uppercase;
  letter-spacing: .02em;
}
h3 {
  font-family: var(--font-head);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--navy);
  text-transform: uppercase;
}

/* ══════════════════════════════════════
   HEADER
══════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition), padding var(--transition);
}
.site-header.scrolled {
  background: var(--navy);
  box-shadow: 0 4px 24px rgba(0,0,0,.25);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding-block: 1.25rem;
  transition: padding var(--transition);
}
.site-header.scrolled .header-inner { padding-block: .85rem; }

/* Logo */
.logo { display: flex; align-items: center; background: white; }
.logo img { height: 90px; width: auto; }
.logo-text { display: flex; flex-direction: column; line-height: 1; }
.logo-nobu {
  font-family: var(--font-head);
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: .06em;
  color: var(--white);
  text-transform: uppercase;
}
.logo-consulting {
  font-family: var(--font-body);
  font-size: .65rem;
  font-weight: 400;
  letter-spacing: .25em;
  color: rgba(255,255,255,.65);
  text-transform: uppercase;
}

/* Nav */
.main-nav {
  display: flex;
  gap: 2rem;
  margin-left: auto;
}
.main-nav a {
  font-family: var(--font-head);
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.8);
  position: relative;
  padding-bottom: 2px;
  transition: color var(--transition);
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--orange);
  transition: width var(--transition);
}
.main-nav a:hover { color: var(--white); }
.main-nav a:hover::after { width: 100%; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 26px; height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav */
.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--navy-mid);
  padding: 1.25rem var(--side-pad) 1.5rem;
  gap: .25rem;
  border-top: 1px solid rgba(255,255,255,.08);
}
.mobile-nav a {
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.8);
  padding: .5rem 0;
  border-bottom: 1px solid rgba(255,255,255,.06);
  transition: color var(--transition);
}
.mobile-nav a:hover { color: var(--orange); }
.mobile-nav.open { display: flex; }

/* ══════════════════════════════════════
   HERO
══════════════════════════════════════ */
.hero {
  position: relative;
  min-height: 72svh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
}
.hero-img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  filter: grayscale(20%);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    rgba(13,27,42,.88) 0%,
    rgba(13,27,42,.72) 55%,
    rgba(13,27,42,.35) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 2;
  padding-block: 6rem 3rem;
  max-width: 850px;
}
.hero-badge {
  display: inline-block;
  font-family: var(--font-head);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--orange);
  background: rgba(232,98,42,.12);
  border: 1px solid rgba(232,98,42,.3);
  padding: .35rem .85rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
}
.hero-title {
  font-family: var(--font-head);
  font-size: clamp(2rem, 6vw, 2.7rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: .02em;
  margin-bottom: 1.25rem;
}
.hero-title strong {
  color: var(--orange);
  font-weight: 800;
}

h1 { font-size: 1.3em; color: silver; text-align: center; }

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: rgba(255,255,255,.75);
  margin-bottom: 2.25rem;
  max-width: 600px;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-scroll {
  position: absolute;
  bottom: 2.5rem; left: var(--side-pad);
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 1rem;
  color: rgba(255,255,255,.45);
  font-family: var(--font-head);
  font-size: .75rem;
  letter-spacing: .15em;
  text-transform: uppercase;
}
.scroll-line {
  width: 60px; height: 1px;
  background: rgba(255,255,255,.25);
  position: relative;
  overflow: hidden;
}
.scroll-line::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: var(--orange);
  animation: scrollLine 2s ease infinite;
}
@keyframes scrollLine {
  0%   { left: -100%; }
  50%  { left: 0; }
  100% { left: 100%; }
}

/* ══════════════════════════════════════
   INTRO STRIP
══════════════════════════════════════ */
.intro-strip {
  background: var(--navy);
  padding-block: 2.5rem;
}
.intro-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255,255,255,.08);
}
.intro-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 1.75rem 1rem;
  background: var(--navy);
  transition: background var(--transition);
}
.intro-item:hover { background: var(--navy-light); }
.intro-number {
  font-family: var(--font-head);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--orange);
  line-height: 1;
  letter-spacing: .04em;
}
.intro-label {
  margin-top: .4rem;
  font-size: .82rem;
  color: rgba(255,255,255,.55);
  letter-spacing: .04em;
}

/* ══════════════════════════════════════
   ABOUT
══════════════════════════════════════ */
.about { background: var(--white); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}
.about-image {
  position: relative;
}
.about-image img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.about-image-accent {
  position: absolute;
  top: -1rem; right: -1rem;
  width: 50%; height: 50%;
  border: 3px solid var(--orange);
  border-radius: var(--radius);
  z-index: -1;
}
.about-text h2 { margin-bottom: 1rem; }
.about-text .lead {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--navy);
  margin-bottom: 1rem;
}
.about-text p { color: var(--gray-500); margin-bottom: 1.75rem; }

/* ══════════════════════════════════════
   SERVICES
══════════════════════════════════════ */
.services { background: var(--gray-100); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.service-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 2.25rem 2rem;
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.service-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0;
  width: 4px; height: 100%;
  background: var(--orange);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--transition);
}
.service-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
  border-color: transparent;
}
.service-card:hover::before { transform: scaleY(1); }
.service-number {
  font-family: var(--font-head);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--orange);
  margin-bottom: .75rem;
}
.service-icon {
  width: 44px; height: 44px;
  color: var(--navy-light);
  margin-bottom: 1rem;
}
.service-icon svg { width: 100%; height: 100%; }
.service-card h3 { margin-bottom: .75rem; font-size: 1.25rem; }
.service-card p { color: var(--gray-500); font-size: .95rem; line-height: 1.65; }

/* ══════════════════════════════════════
   WHY
══════════════════════════════════════ */
.why { background: var(--white); }
.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}
.why-image img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.why-content h2 { margin-bottom: 1.75rem; }
.why-list { display: flex; flex-direction: column; gap: 1.5rem; }
.why-list li {
  display: flex;
  gap: 1.1rem;
  align-items: flex-start;
}
.why-icon {
  flex-shrink: 0;
  width: 42px; height: 42px;
  background: rgba(232,98,42,.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--orange);
}
.why-icon svg { width: 20px; height: 20px; }
.why-list strong {
  display: block;
  font-family: var(--font-head);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--navy);
  margin-bottom: .25rem;
}
.why-list p { font-size: .9rem; color: var(--gray-500); margin: 0; }

/* ══════════════════════════════════════
   QUOTE
══════════════════════════════════════ */
.quote-section {
  background: var(--navy);
  padding-block: 4.5rem;
  text-align: center;
}
.quote-section blockquote {
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  font-style: italic;
  color: var(--white);
  line-height: 1.4;
  max-width: 760px;
  margin-inline: auto;
  margin-bottom: .75rem;
}
.quote-section cite {
  font-family: var(--font-body);
  font-size: .9rem;
  color: var(--orange);
  letter-spacing: .08em;
  text-transform: uppercase;
  font-style: normal;
}

/* ══════════════════════════════════════
   CONTACT
══════════════════════════════════════ */
.contact { background: var(--cream); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.contact-info h2 { margin-bottom: .75rem; }
.contact-info > p { color: var(--gray-500); margin-bottom: 2rem; }
.contact-details { display: flex; flex-direction: column; gap: 1rem; }
.contact-details li {
  display: flex;
  align-items: center;
  gap: .85rem;
  font-size: 1.2em;
  color: var(--navy);
}
.contact-details svg {
  width: 20px; height: 20px;
  color: var(--orange);
  flex-shrink: 0;
}
.contact-details a { transition: color var(--transition); }
.contact-details a:hover { color: var(--orange); }

/* Form */
.contact-form {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: var(--shadow);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: .4rem; margin-bottom: 1.25rem; }
.form-group label {
  font-family: var(--font-head);
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--navy);
}
.req { color: var(--orange); }
.form-group input,
.form-group textarea {
  padding: .75rem 1rem;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .95rem;
  color: var(--navy);
  background: var(--white);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--orange);
  box-shadow: 0 0 0 3px rgba(232,98,42,.1);
}
input[type="file"] { display: none; }
.file-input-wrap { display: flex; align-items: center; gap: .75rem; flex-wrap: wrap; }
.file-label {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .5rem 1.1rem;
  background: var(--gray-100);
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius);
  font-family: var(--font-head);
  font-size: .85rem;
  font-weight: 600;
  letter-spacing: .05em;
  cursor: pointer;
  transition: background var(--transition);
}
.file-label svg { width: 16px; height: 16px; color: var(--orange); }
.file-label:hover { background: var(--gray-200); }
.file-name { font-size: .8rem; color: var(--gray-500); }
.form-success {
  display: none;
  margin-top: 1rem;
  padding: .85rem 1rem;
  background: rgba(46, 160, 67, .1);
  border: 1px solid rgba(46, 160, 67, .3);
  border-radius: var(--radius);
  color: #1a7c2e;
  font-size: .9rem;
  text-align: center;
}

/* ══════════════════════════════════════
   FOOTER
══════════════════════════════════════ */
.site-footer {
  background: var(--navy);
  padding-block: 2.5rem;
  text-align: center;
}
.footer-brand {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: .4rem;
  margin-bottom: .5rem;
}
.footer-brand .logo-nobu {
  font-family: var(--font-head);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: .08em;
  color: var(--white);
  text-transform: uppercase;
}
.footer-brand .logo-consulting {
  font-family: var(--font-body);
  font-size: 1.2em;
  letter-spacing: .25em;
  color: rgba(255,255,255,.4);
  text-transform: uppercase;
}
.footer-tagline {
  font-size: 1.2rem;
  color: rgba(255,255,255,.4);
  margin-bottom: .35rem;
}
.footer-copy {
  font-size: 1.2em;
  color: rgba(255,255,255,.25);
}

/* ══════════════════════════════════════
   SCROLL REVEAL
══════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .65s ease, transform .65s ease;
}
.reveal.revealed {
  opacity: 1;
  transform: none;
}
.service-card.reveal:nth-child(2) { transition-delay: .1s; }
.service-card.reveal:nth-child(3) { transition-delay: .2s; }
.service-card.reveal:nth-child(4) { transition-delay: .3s; }
.why-list li.reveal:nth-child(2) { transition-delay: .1s; }
.why-list li.reveal:nth-child(3) { transition-delay: .2s; }
.why-list li.reveal:nth-child(4) { transition-delay: .3s; }

/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .main-nav, .btn-header { display: none; }
  .hamburger { display: flex; }

  .hero-title p { font-size: clamp(1.7rem, 8vw, 1.7rem); }

  .intro-grid { grid-template-columns: repeat(2, 1fr); }

  .about-grid,
  .why-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .about-image { order: -1; }
  .about-image-accent { display: none; }
  .why-image { order: -1; }

  .services-grid { grid-template-columns: 1fr; }

  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 1.75rem 1.25rem; }

  .hero-scroll { display: none; }
}

@media (max-width: 480px) {
  .intro-grid { grid-template-columns: repeat(2, 1fr); gap: 1px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
}