/* ============================================================
   IN-ING d.o.o. — style.css
   Monokromatski identitet: crna · siva · bijela
   ============================================================ */

/* ---------- TOKENS ---------- */
:root {
  --black:      #0A0A0A;
  --charcoal:   #1C1C1C;
  --dark:       #2A2A2A;
  --mid:        #3D3D3D;
  --silver:     #8A8A8A;
  --light-gray: #C8C8C8;
  --offwhite:   #F4F4F4;
  --white:      #FFFFFF;

  /* Jedini naglasak — hladna čelična bijela linija */
  --accent:     #E0E0E0;
  --accent-hot: #FFFFFF;

  --text:       #1C1C1C;
  --text-soft:  #5A5A5A;

  --font-disp:  'Sora', sans-serif;
  --font-body:  'Inter', sans-serif;

  --radius:     8px;
  --radius-lg:  14px;
  --shadow:     0 4px 24px rgba(0,0,0,.08);
  --shadow-md:  0 8px 40px rgba(0,0,0,.14);
  --transition: .3s cubic-bezier(.4,0,.2,1);
}

/* ---------- RESET & BASE ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---------- UTILITY ---------- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 100px 0; }

.section-eyebrow {
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--silver);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-disp);
  font-size: clamp(1.9rem, 3.2vw, 2.6rem);
  font-weight: 700;
  color: var(--black);
  line-height: 1.15;
  margin-bottom: 20px;
}

.section-lead {
  font-size: 1.05rem;
  color: var(--text-soft);
  max-width: 600px;
}

.section-head { text-align: center; margin-bottom: 64px; }
.section-head .section-lead { margin: 0 auto; }

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 4px;
  font-family: var(--font-body);
  font-size: .92rem;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: var(--transition);
  letter-spacing: .04em;
  text-transform: uppercase;
}

.btn-primary {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}
.btn-primary:hover {
  background: var(--offwhite);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(255,255,255,.2);
}

/* Primary in light sections */
.contact .btn-primary,
.contact-form-wrap .btn-primary {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}
.contact .btn-primary:hover,
.contact-form-wrap .btn-primary:hover {
  background: var(--charcoal);
  box-shadow: 0 6px 24px rgba(0,0,0,.2);
}

.btn-ghost {
  background: transparent;
  color: rgba(255,255,255,.75);
  border-color: rgba(255,255,255,.35);
}
.btn-ghost:hover {
  background: rgba(255,255,255,.1);
  border-color: rgba(255,255,255,.7);
  color: var(--white);
}

.btn-full { width: 100%; justify-content: center; }

/* ---------- NAVIGATION ---------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 20px 0;
  transition: background var(--transition), padding var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  background: var(--black);
  padding: 12px 0;
  box-shadow: 0 2px 20px rgba(0,0,0,.5);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-disp);
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: .04em;
}
.logo-in  { color: var(--white); }
.logo-dash { color: var(--silver); margin: 0 2px; font-weight: 300; }
.logo-ing { color: var(--light-gray); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav-links a {
  color: rgba(255,255,255,.72);
  font-size: .88rem;
  font-weight: 500;
  transition: color var(--transition);
  letter-spacing: .04em;
  text-transform: uppercase;
}
.nav-links a:hover { color: var(--white); }

.nav-cta {
  border: 1.5px solid rgba(255,255,255,.4) !important;
  padding: 8px 20px;
  border-radius: 4px;
}
.nav-cta:hover {
  border-color: var(--white) !important;
  background: rgba(255,255,255,.08);
}

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

/* ---------- HERO ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.hero-img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  filter: grayscale(100%);
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    110deg,
    rgba(0,0,0,.87) 0%,
    rgba(0,0,0,.70) 55%,
    rgba(0,0,0,.40) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: 140px 24px 100px;
  max-width: 640px;
  margin-left: clamp(24px, 8vw, 160px);
}

.hero-eyebrow {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--silver);
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-disp);
  font-size: clamp(4rem, 9vw, 7rem);
  font-weight: 800;
  color: var(--white);
  line-height: .95;
  margin-bottom: 20px;
  letter-spacing: -.02em;
}
.title-dash {
  color: var(--silver);
  font-weight: 300;
  margin: 0 4px;
}

.hero-sub {
  font-size: 1rem;
  font-weight: 500;
  color: rgba(255,255,255,.55);
  margin-bottom: 20px;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.hero-desc {
  font-size: 1.05rem;
  color: rgba(255,255,255,.72);
  margin-bottom: 40px;
  max-width: 500px;
  line-height: 1.7;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.hero-scroll {
  position: absolute;
  bottom: 36px; left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  color: rgba(255,255,255,.4);
  font-size: 1rem;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

/* ---------- STRIP ---------- */
.strip {
  background: var(--charcoal);
  border-top: 1px solid var(--dark);
  border-bottom: 1px solid var(--mid);
  padding: 18px 0;
}
.strip-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  justify-content: center;
}
.strip-inner span {
  color: var(--light-gray);
  font-size: .83rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 8px;
}
.strip-inner span i { color: var(--silver); }

/* ---------- ABOUT ---------- */
.about { background: var(--white); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}

.about-img-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: visible;
}
.about-img-wrap img {
  width: 100%;
  height: 500px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  filter: grayscale(20%);
  transition: filter var(--transition);
}
.about-img-wrap:hover img { filter: grayscale(0%); }

.about-badge {
  position: absolute;
  bottom: -24px; right: -24px;
  background: var(--black);
  color: var(--white);
  padding: 22px 26px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  border-left: 3px solid var(--silver);
}
.badge-label {
  display: block;
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--silver);
  margin-bottom: 4px;
}
.badge-sub {
  display: block;
  font-family: var(--font-disp);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
}

.about-text .section-title { color: var(--black); }
.about-text p {
  color: var(--text-soft);
  margin-bottom: 16px;
  font-size: 1.01rem;
}
.about-list { margin-top: 24px; display: flex; flex-direction: column; gap: 10px; }
.about-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--text);
  font-size: .96rem;
}
.about-list li i { color: var(--mid); margin-top: 4px; flex-shrink: 0; }

/* ---------- SERVICES ---------- */
.services { background: var(--offwhite); }

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.service-card {
  background: var(--white);
  padding: 36px 26px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border-top: 3px solid var(--light-gray);
  transition: var(--transition);
}
.service-card:hover {
  border-top-color: var(--black);
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.card-icon {
  width: 52px; height: 52px;
  background: var(--offwhite);
  border: 1px solid var(--light-gray);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  transition: var(--transition);
}
.service-card:hover .card-icon {
  background: var(--black);
  border-color: var(--black);
}
.card-icon i {
  font-size: 1.35rem;
  color: var(--mid);
  transition: color var(--transition);
}
.service-card:hover .card-icon i { color: var(--white); }

.service-card h3 {
  font-family: var(--font-disp);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--black);
}
.service-card > p {
  font-size: .91rem;
  color: var(--text-soft);
  margin-bottom: 18px;
  line-height: 1.6;
}
.service-card ul { display: flex; flex-direction: column; gap: 7px; }
.service-card ul li {
  font-size: .86rem;
  color: var(--mid);
  padding-left: 14px;
  position: relative;
}
.service-card ul li::before {
  content: '';
  position: absolute;
  left: 0; top: 9px;
  width: 5px; height: 1px;
  background: var(--silver);
}

/* ---------- WHY ---------- */
.why { position: relative; padding: 100px 0; }
.why-bg { position: absolute; inset: 0; overflow: hidden; }
.why-bg img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
}
.why-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,.94), rgba(28,28,28,.90));
}
.why > .container { position: relative; z-index: 1; }

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.why-card {
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.07);
  padding: 36px 28px;
  transition: var(--transition);
}
.why-card:hover {
  background: rgba(255,255,255,.07);
  border-color: rgba(255,255,255,.18);
}
.why-card i {
  font-size: 1.5rem;
  color: var(--silver);
  margin-bottom: 18px;
  display: block;
}
.why-card h4 {
  font-family: var(--font-disp);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.why-card p {
  font-size: .9rem;
  color: rgba(255,255,255,.55);
  line-height: 1.65;
}

/* ---------- PROCESS ---------- */
.process { background: var(--white); }

.process-track { position: relative; }
.process-line {
  position: absolute;
  top: 36px;
  left: calc(10% + 18px);
  right: calc(10% + 18px);
  height: 1px;
  background: var(--light-gray);
}

.process-steps {
  display: flex;
  gap: 20px;
  justify-content: space-between;
}

.process-step { flex: 1; text-align: center; padding: 0 12px; }

.step-bubble {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: var(--white);
  color: var(--black);
  font-family: var(--font-disp);
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
  border: 2px solid var(--black);
  position: relative;
  z-index: 1;
  transition: var(--transition);
  letter-spacing: .04em;
}
.process-step:hover .step-bubble {
  background: var(--black);
  color: var(--white);
}

.process-step h4 {
  font-family: var(--font-disp);
  font-size: .98rem;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 10px;
}
.process-step p {
  font-size: .87rem;
  color: var(--text-soft);
  line-height: 1.6;
}

/* ---------- CONTACT ---------- */
.contact { background: var(--offwhite); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 56px;
  align-items: start;
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
}
.info-item i { font-size: 1.1rem; color: var(--mid); margin-top: 3px; flex-shrink: 0; }
.info-item div { display: flex; flex-direction: column; gap: 2px; }
.info-item strong { font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--silver); }
.info-item span, .info-item a { font-size: .98rem; color: var(--text); }
.info-item a:hover { color: var(--black); text-decoration: underline; }

.contact-form-wrap {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 48px 44px;
  box-shadow: var(--shadow);
  border: 1px solid var(--accent);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.form-group label {
  font-size: .82rem;
  font-weight: 600;
  color: var(--black);
  letter-spacing: .04em;
  text-transform: uppercase;
}
.form-group input,
.form-group textarea,
.form-group select {
  padding: 13px 16px;
  border: 1.5px solid var(--light-gray);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: .93rem;
  color: var(--text);
  background: var(--offwhite);
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: vertical;
  appearance: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--black);
  box-shadow: 0 0 0 3px rgba(0,0,0,.07);
  background: var(--white);
}
.form-group input.invalid,
.form-group textarea.invalid { border-color: #c0392b; }
.form-error { font-size: .8rem; color: #c0392b; min-height: 18px; }

.form-note {
  text-align: center;
  font-size: .8rem;
  color: var(--silver);
  margin-top: 14px;
}

.form-success {
  display: none;
  align-items: center;
  gap: 12px;
  background: #f8f8f8;
  border: 1.5px solid var(--light-gray);
  color: var(--black);
  padding: 16px 20px;
  border-radius: var(--radius);
  margin-top: 16px;
  font-weight: 500;
}
.form-success i { font-size: 1.3rem; color: var(--mid); }

/* ---------- FOOTER ---------- */
.footer { background: var(--black); color: rgba(255,255,255,.6); }

.footer-top { padding: 72px 0 56px; }
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
}

.footer-logo {
  font-family: var(--font-disp);
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: .02em;
  margin-bottom: 10px;
}
.footer-logo .logo-in  { color: var(--white); }
.footer-logo .logo-dash { color: var(--silver); font-weight: 300; }
.footer-logo .logo-ing { color: rgba(255,255,255,.5); }
.footer-tagline { font-size: .82rem; color: rgba(255,255,255,.45); letter-spacing: .08em; text-transform: uppercase; }
.footer-sub { font-size: .8rem; color: rgba(255,255,255,.25); margin-top: 4px; }

.footer-nav strong,
.footer-contact strong {
  display: block;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: rgba(255,255,255,.3);
  margin-bottom: 18px;
}
.footer-nav ul { display: flex; flex-direction: column; gap: 10px; }
.footer-nav ul li a {
  font-size: .88rem;
  color: rgba(255,255,255,.5);
  transition: color var(--transition);
}
.footer-nav ul li a:hover { color: var(--white); }

.footer-contact p {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: .88rem;
  margin-bottom: 10px;
}
.footer-contact i { color: var(--silver); width: 14px; }
.footer-contact a { color: rgba(255,255,255,.5); transition: color var(--transition); }
.footer-contact a:hover { color: var(--white); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.06);
  padding: 20px 0;
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-bottom p { font-size: .8rem; color: rgba(255,255,255,.25); }

/* ---------- BACK TO TOP ---------- */
.back-to-top {
  position: fixed;
  bottom: 32px; right: 32px;
  width: 46px; height: 46px;
  background: var(--charcoal);
  border: 1px solid var(--mid);
  color: var(--white);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: var(--transition);
  z-index: 900;
}
.back-to-top.visible { opacity: 1; pointer-events: all; transform: translateY(0); }
.back-to-top:hover { background: var(--white); color: var(--black); }

/* ---------- SCROLL REVEAL ---------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1100px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 900px) {
  .about-grid { grid-template-columns: 1fr; gap: 48px; }
  .about-img-wrap img { height: 360px; }
  .about-badge { bottom: -16px; right: 16px; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .process-steps { flex-direction: column; gap: 32px; }
  .process-line { display: none; }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }

  .nav-links {
    position: fixed;
    top: 0; right: -100%;
    width: 280px; height: 100vh;
    background: var(--black);
    flex-direction: column;
    align-items: flex-start;
    padding: 100px 32px 48px;
    gap: 28px;
    transition: right var(--transition);
    box-shadow: -4px 0 40px rgba(0,0,0,.5);
  }
  .nav-links.open { right: 0; }
  .nav-links a { font-size: 1rem; }
  .hamburger { display: flex; }

  .hero-content { margin-left: 24px; padding-top: 120px; }
  .hero-title { font-size: clamp(3rem, 12vw, 5rem); }

  .services-grid { grid-template-columns: 1fr; gap: 16px; }
  .why-grid { grid-template-columns: 1fr; gap: 0; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form-wrap { padding: 32px 22px; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-bottom .container { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .hero-actions { flex-direction: column; }
  .btn { width: 100%; justify-content: center; }
  .strip-inner { gap: 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .reveal { transition: none; opacity: 1; transform: none; }
  .hero-scroll { animation: none; }
  * { transition-duration: .01ms !important; }
}