/* =============================================
   АГРОТЕХ ЮНІОН — style.css
   ============================================= */

/* ---- Variables ---- */
:root {
  --green:       #c0392b;
  --green-dark:  #922b21;
  --green-light: #e74c3c;
  --yellow:      #f5c518;
  --graphite:    #2c2c2c;
  --gray:        #f7f4f4;
  --gray-mid:    #e8e2e2;
  --text:        #222;
  --text-muted:  #666;
  --white:       #ffffff;
  --radius:      8px;
  --shadow:      0 2px 16px rgba(0,0,0,0.10);
  --shadow-hover:0 6px 28px rgba(0,0,0,0.16);
  --transition:  0.25s ease;
  --header-h:    72px;
  --max-w:       1200px;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; font: inherit; }

/* ---- Typography helpers ---- */
.section-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--graphite);
  line-height: 1.2;
  margin-bottom: 0.5rem;
}
.section-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 2.5rem;
  max-width: 680px;
}
.section-head { margin-bottom: 2.5rem; }
.section-head::after {
  content: '';
  display: block;
  width: 56px;
  height: 4px;
  background: var(--green);
  border-radius: 2px;
  margin-top: 0.75rem;
}

/* ---- Layout ---- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
}
section { padding: 5rem 0; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  border: 2px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: var(--green);
  color: var(--white);
  border-color: var(--green);
}
.btn--primary:hover { background: var(--green-dark); border-color: var(--green-dark); }

.btn--outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.7);
}
.btn--outline:hover { background: rgba(255,255,255,0.12); border-color: var(--white); }

.btn--outline-dark {
  background: transparent;
  color: var(--green);
  border-color: var(--green);
}
.btn--outline-dark:hover { background: var(--green); color: var(--white); }

.btn--yellow {
  background: var(--yellow);
  color: var(--graphite);
  border-color: var(--yellow);
}
.btn--yellow:hover { background: #d4a900; border-color: #d4a900; }

.btn--sm { padding: 0.55rem 1.2rem; font-size: 0.875rem; }

/* ====================================================
   HEADER
   ==================================================== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--gray-mid);
  transition: box-shadow var(--transition);
}
.header--scrolled { box-shadow: 0 2px 20px rgba(0,0,0,0.10); }

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 1.5rem;
}

.logo {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
  flex-shrink: 0;
}
.logo__main {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--green-dark);
  letter-spacing: -0.02em;
}
.logo__sub {
  font-size: 0.65rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* Nav */
.nav { display: flex; align-items: center; gap: 0.25rem; }
.nav__link {
  padding: 0.4rem 0.85rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--graphite);
  transition: color var(--transition), background var(--transition);
}
.nav__link:hover { color: var(--green); background: var(--gray); }

/* Header phone area */
.header__contact {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}
.header__phone {
  font-size: 1rem;
  font-weight: 700;
  color: var(--graphite);
  white-space: nowrap;
}
.header__phone:hover { color: var(--green); }

/* Burger */
.burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  padding: 4px;
  border-radius: 6px;
  flex-shrink: 0;
}
.burger span {
  display: block;
  height: 2px;
  background: var(--graphite);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.burger--open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger--open span:nth-child(2) { opacity: 0; }
.burger--open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ====================================================
   HERO
   ==================================================== */
.hero {
  padding: 0;
  min-height: 100vh;
  background:
    linear-gradient(135deg, rgba(60,5,5,0.92) 0%, rgba(120,15,15,0.80) 50%, rgba(30,3,3,0.94) 100%),
    url("/images/hero.jpg") 75% center / cover no-repeat;
  background-color: var(--green-dark);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 40px,
    rgba(255,255,255,0.015) 40px,
    rgba(255,255,255,0.015) 80px
  );
  pointer-events: none;
}

.hero__inner {
  padding: calc(var(--header-h) + 4rem) 1.5rem 5rem;
  max-width: var(--max-w);
  margin: 0 auto;
  width: 100%;
  position: relative;
  z-index: 1;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(245,197,24,0.15);
  border: 1px solid rgba(245,197,24,0.4);
  color: var(--yellow);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.85rem;
  border-radius: 100px;
  margin-bottom: 1.5rem;
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero__subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255,255,255,0.85);
  font-weight: 400;
  max-width: 700px;
  margin-bottom: 1.25rem;
}

.hero__desc {
  font-size: 0.95rem;
  color: rgba(255,255,255,0.65);
  max-width: 620px;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: rgba(255,255,255,0.5);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: bounce 2s infinite;
}
.hero__scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid rgba(255,255,255,0.4);
  border-bottom: 2px solid rgba(255,255,255,0.4);
  transform: rotate(45deg);
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}

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

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about__text {
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--text);
}

.about__cards {
  display: grid;
  gap: 1rem;
}

.info-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  border-left: 4px solid var(--green);
  box-shadow: var(--shadow);
  transition: transform var(--transition);
}
.info-card:hover { transform: translateX(4px); }
.info-card__label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.3rem;
}
.info-card__value {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--graphite);
}

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

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.service-card {
  background: var(--gray);
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid var(--gray-mid);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.service-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: var(--green-light); }
.service-card:hover::before { transform: scaleX(1); }

.service-card__icon {
  width: 44px;
  height: 44px;
  background: var(--green);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  color: var(--white);
  font-size: 1.25rem;
  flex-shrink: 0;
}
.service-card__title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--graphite);
  margin-bottom: 0.5rem;
}
.service-card__desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ====================================================
   EQUIPMENT (CATALOG)
   ==================================================== */
.equipment { background: var(--gray); }

.equipment__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.tractor-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}
.tractor-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-5px); }

.tractor-card__img {
  height: 220px;
  background: #f0f0f0;
  position: relative;
  overflow: hidden;
}
.tractor-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.4s ease;
  display: block;
}
.tractor-card:hover .tractor-card__img img {
  transform: scale(1.04);
}

.tractor-card__badge {
  position: absolute;
  top: 0.75rem;
  right: 0.75rem;
  background: var(--yellow);
  color: var(--graphite);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  z-index: 2;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.tractor-card__body {
  padding: 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.tractor-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--graphite);
  margin-bottom: 0.4rem;
}
.tractor-card__desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.6;
}

.tractor-card__specs {
  background: var(--gray);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  margin-bottom: 1.25rem;
  flex: 1;
}
.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.2rem 0;
  font-size: 0.8rem;
}
.spec-row + .spec-row { border-top: 1px solid var(--gray-mid); }
.spec-row__key { color: var(--text-muted); }
.spec-row__val { font-weight: 600; color: var(--graphite); }

.tractor-card__footer { margin-top: auto; }

/* ====================================================
   WHY US
   ==================================================== */
.why-us { background: var(--green-dark); }

.why-us .section-title { color: var(--white); }
.why-us .section-head::after { background: var(--yellow); }
.why-us .section-sub { color: rgba(255,255,255,0.7); }

.why-us__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.benefit-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: background var(--transition), transform var(--transition);
}
.benefit-card:hover { background: rgba(255,255,255,0.12); transform: translateY(-3px); }

.benefit-card__num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--yellow);
  line-height: 1;
  margin-bottom: 0.75rem;
  opacity: 0.9;
}
.benefit-card__title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.5rem;
}
.benefit-card__desc {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.72);
  line-height: 1.65;
}

/* ====================================================
   CONTACTS
   ==================================================== */
.contacts { background: var(--white); }

.contacts__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contacts__info { display: flex; flex-direction: column; gap: 1.25rem; }

.contact-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.contact-item__icon {
  width: 44px;
  height: 44px;
  background: var(--gray);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--green);
  font-size: 1.1rem;
}
.contact-item__label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 0.2rem;
}
.contact-item__value {
  font-size: 0.95rem;
  color: var(--graphite);
  font-weight: 500;
  line-height: 1.5;
}
.contact-item__value a:hover { color: var(--green); }

.contact-item__value--phone {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--graphite);
}

.contacts__btns {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

.btn--viber {
  background: #7360f2;
  color: var(--white);
  border-color: #7360f2;
}
.btn--viber:hover { background: #5b49d5; border-color: #5b49d5; }

.btn--telegram {
  background: #24a1de;
  color: var(--white);
  border-color: #24a1de;
}
.btn--telegram:hover { background: #1a87bf; border-color: #1a87bf; }

/* ====================================================
   FORM
   ==================================================== */
.form-box {
  background: var(--gray);
  border-radius: var(--radius);
  padding: 2rem;
}
.form-box__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--graphite);
  margin-bottom: 1.5rem;
}
.form-group { margin-bottom: 1rem; }
.form-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.4rem;
}
.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--gray-mid);
  border-radius: 6px;
  font-size: 0.95rem;
  font-family: inherit;
  background: var(--white);
  color: var(--text);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(30,126,52,0.12);
}
.form-control.field--error {
  border-color: #dc2626;
}
textarea.form-control { resize: vertical; min-height: 100px; }

.field-error-msg {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.78rem;
  color: #dc2626;
}

.form__btn { width: 100%; justify-content: center; margin-top: 0.5rem; }

.form-success {
  background: #d1fae5;
  border: 1px solid #6ee7b7;
  color: #065f46;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  margin-top: 1rem;
  font-weight: 500;
}
.form-success--error {
  background: #fee2e2;
  border-color: #fca5a5;
  color: #991b1b;
}

/* ====================================================
   FOOTER
   ==================================================== */
.footer {
  background: var(--graphite);
  color: rgba(255,255,255,0.65);
  padding: 2rem 0;
}
.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.footer__logo { color: var(--white); font-weight: 700; font-size: 1rem; }
.footer__copy { font-size: 0.85rem; }
.footer__tagline { font-size: 0.8rem; }

/* ====================================================
   REVEAL ANIMATION
   ==================================================== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* ====================================================
   RESPONSIVE
   ==================================================== */
@media (max-width: 1024px) {
  .services__grid { grid-template-columns: repeat(2, 1fr); }
  .equipment__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }
  section { padding: 3.5rem 0; }

  /* Burger visible */
  .burger { display: flex; }

  /* Nav collapsible */
  .nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    padding: 1rem 1.5rem 1.5rem;
    border-bottom: 1px solid var(--gray-mid);
    box-shadow: 0 8px 24px rgba(0,0,0,0.10);
    gap: 0;
  }
  .nav--open { display: flex; }
  .nav__link {
    padding: 0.75rem 0;
    font-size: 1rem;
    border-bottom: 1px solid var(--gray-mid);
    border-radius: 0;
  }
  .nav__link:last-child { border-bottom: none; }

  /* Header phone */
  .header__phone { display: none; }
  .header__contact .btn--sm { display: none; }

  /* About */
  .about__grid { grid-template-columns: 1fr; gap: 2rem; }

  /* Services */
  .services__grid { grid-template-columns: 1fr; }

  /* Equipment */
  .equipment__grid { grid-template-columns: 1fr; }

  /* Why */
  .why-us__grid { grid-template-columns: 1fr; }

  /* Contacts */
  .contacts__grid { grid-template-columns: 1fr; gap: 2rem; }

  /* Hero */
  .hero__inner { padding: calc(var(--header-h) + 2.5rem) 1.5rem 3.5rem; }
  .hero__scroll { display: none; }
}

@media (max-width: 425px) {
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { width: 100%; justify-content: center; }
  .contacts__btns .btn { flex: 1; justify-content: center; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .about__grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .why-us__grid { grid-template-columns: repeat(2, 1fr); }
}