/* ==================================================================
   STALPRO — Minimalist industrial site
   ================================================================== */

/* ---------- SECTIONS ---------- */

.section {
  padding-block: clamp(4rem, 9vw, 8rem);
}

.section--dark {
  background: var(--bg-dark);
  color: var(--text-on-dark);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--text-on-dark);
}

.section--alt {
  background: var(--bg-alt);
}

.section-eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--border);
}

.section--dark .section-eyebrow {
  color: var(--text-on-dark-muted);
  border-bottom-color: var(--border-dark);
}

.section-title {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: var(--space-6);
  max-width: 20ch;
}

.section-lead {
  font-size: var(--text-lg);
  color: var(--text-muted);
  max-width: 60ch;
  margin-bottom: var(--space-12);
}

.section--dark .section-lead {
  color: var(--text-on-dark-muted);
}

/* ==================================================================
   HEADER
   ================================================================== */

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--border);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: var(--space-8);
}

.logo {
  display: inline-flex;
  align-items: center;
  color: var(--text);
  flex-shrink: 0;
}

.logo svg {
  height: 50px;
  width: auto;
}

.nav {
  display: none;
}

@media (min-width: 960px) {
  .nav {
    display: flex;
    gap: var(--space-8);
    flex: 1;
    justify-content: center;
  }
}

.nav__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.02em;
  position: relative;
  padding: var(--space-2) 0;
  transition: color 0.25s ease;
}

.nav__link:hover {
  color: var(--text);
}

.nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.3s var(--ease);
}

.nav__link:hover::after {
  width: 100%;
}

.header__right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.header__phone {
  display: none;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: opacity 0.2s ease;
}

@media (min-width: 720px) {
  .header__phone {
    display: inline-flex;
  }
}

.header__phone:hover {
  opacity: 0.7;
}

.icon-btn {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  color: var(--text);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.icon-btn:hover {
  background: var(--bg-alt);
}

.icon-btn svg {
  width: 18px;
  height: 18px;
}

/* Theme toggle shows/hides based on theme */
.icon-btn .icon-sun { display: none; }
.icon-btn .icon-moon { display: block; }
[data-theme="dark"] .icon-btn .icon-sun { display: block; }
[data-theme="dark"] .icon-btn .icon-moon { display: none; }

/* Mobile menu */
.menu-toggle {
  display: inline-flex;
}

@media (min-width: 960px) {
  .menu-toggle {
    display: none;
  }
}

.mobile-nav {
  position: fixed;
  inset: var(--nav-height) 0 0 0;
  background: var(--bg);
  padding: var(--space-8) var(--space-6);
  transform: translateX(100%);
  transition: transform 0.35s var(--ease);
  z-index: 99;
  border-top: 1px solid var(--border);
}

.mobile-nav[data-open="true"] {
  transform: translateX(0);
}

.mobile-nav ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.mobile-nav a {
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--text);
}

.mobile-nav__phone {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
  font-size: var(--text-base);
  color: var(--text-muted);
}

/* ==================================================================
   BUTTONS
   ================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: 1rem 2rem;
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius);
  transition: all 0.25s var(--ease);
  border: 1px solid transparent;
  cursor: pointer;
}

.btn--primary {
  background: #ffffff;
  color: #1a1a1a;
}

.btn--primary:hover {
  background: var(--accent);
  transform: translateY(-1px);
}

.btn--outline {
  background: transparent;
  color: var(--text);
  border-color: var(--text);
}

.btn--outline:hover {
  background: var(--text);
  color: var(--bg);
}

.btn--dark {
  background: #1a1a1a;
  color: #ffffff;
}
.btn--dark:hover {
  background: #2b2b2b;
  transform: translateY(-1px);
}

.btn__arrow {
  display: inline-block;
  transition: transform 0.3s var(--ease);
}

.btn:hover .btn__arrow {
  transform: translateX(4px);
}

/* ==================================================================
   HERO
   ================================================================== */

.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  color: #ffffff;
  background: #0f0f0f;
  overflow: hidden;
  isolation: isolate;
}

.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.1);
}

.hero__bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(15,15,15,0.6) 0%, rgba(15,15,15,0.85) 100%),
    linear-gradient(90deg, rgba(15,15,15,0.95) 0%, rgba(15,15,15,0.3) 60%);
}

.hero__inner {
  padding-block: var(--space-24);
  max-width: 920px;
}

.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-xs);
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: #b0b0b0;
  margin-bottom: var(--space-6);
}

.hero__eyebrow::before {
  content: '';
  width: 32px;
  height: 1px;
  background: #c0c0c0;
}

.hero__title {
  font-size: var(--text-hero);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.035em;
  margin-bottom: var(--space-8);
  color: #ffffff;
}

.hero__title em {
  font-style: normal;
  background: linear-gradient(135deg, #ffffff 0%, #c0c0c0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero__sub {
  font-size: var(--text-lg);
  color: #d4d4d4;
  max-width: 46ch;
  margin-bottom: var(--space-12);
  line-height: 1.5;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.hero__meta {
  position: absolute;
  bottom: var(--space-8);
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-6);
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #888;
  pointer-events: none;
}

.hero__meta > * { pointer-events: auto; }

.hero__meta-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #c0c0c0;
  margin-right: var(--space-2);
  vertical-align: middle;
}

@media (max-width: 640px) {
  .hero__meta { display: none; }
}

/* ==================================================================
   CATALOG — Product cards
   ================================================================== */

.catalog__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: var(--space-6);
  margin-bottom: var(--space-16);
}

.catalog__header .section-title {
  margin-bottom: 0;
}

.catalog__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .catalog__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .catalog__grid { grid-template-columns: repeat(4, 1fr); }
}

.product-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease), border-color 0.35s ease;
  box-shadow: var(--card-shadow);
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-shadow-hover);
  border-color: color-mix(in srgb, var(--text) 20%, var(--border));
}

.product-card__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  position: relative;
  background: #0f0f0f;
}

.product-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%) contrast(1.05);
  transition: transform 0.6s var(--ease), filter 0.4s ease;
}

.product-card:hover .product-card__media img {
  transform: scale(1.06);
  filter: grayscale(60%) contrast(1.05);
}

.product-card__num {
  position: absolute;
  top: var(--space-4);
  left: var(--space-4);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.15em;
  color: #ffffff;
  background: rgba(0,0,0,0.5);
  padding: 4px 10px;
  border-radius: 100px;
  backdrop-filter: blur(4px);
}

.product-card__body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: var(--space-3);
}

.product-card__title {
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.product-card__desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.55;
  flex: 1;
}

.product-card__tag {
  margin-top: var(--space-4);
  font-size: var(--text-xs);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}

/* ==================================================================
   ABOUT
   ================================================================== */

.about__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
  align-items: start;
}

@media (min-width: 960px) {
  .about__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-24);
  }
}

.about__text p {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--text-on-dark-muted);
  margin-bottom: var(--space-6);
}

.about__text p:first-of-type {
  font-size: var(--text-xl);
  color: var(--text-on-dark);
  font-weight: 500;
}

.about__director {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--border-dark);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.about__director-label {
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-on-dark-muted);
}

.about__director-name {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--text-on-dark);
}

.facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border-dark);
  border: 1px solid var(--border-dark);
}

.fact {
  background: var(--bg-dark);
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: background-color 0.3s ease;
}

.fact:hover {
  background: var(--bg-dark-alt);
}

.fact__num {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1;
  color: #ffffff;
  background: linear-gradient(135deg, #ffffff 0%, #c0c0c0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.fact__label {
  font-size: var(--text-sm);
  color: var(--text-on-dark-muted);
  line-height: 1.4;
}

/* ==================================================================
   DELIVERY
   ================================================================== */

.delivery {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
  align-items: start;
}

@media (min-width: 960px) {
  .delivery {
    grid-template-columns: 5fr 7fr;
    gap: var(--space-24);
  }
}

.delivery__headline {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.05;
  margin-bottom: var(--space-6);
}

.delivery__lead {
  font-size: var(--text-lg);
  color: var(--text-muted);
  line-height: 1.55;
}

.benefits {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.benefit {
  background: var(--bg);
  padding: var(--space-8) var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: background-color 0.3s ease;
}

.benefit:hover {
  background: var(--bg-alt);
}

.benefit__icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  margin-bottom: var(--space-2);
}

.benefit__icon svg {
  width: 32px;
  height: 32px;
  stroke: currentColor;
  fill: none;
  stroke-width: 1.25;
}

.benefit__title {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.benefit__desc {
  font-size: var(--text-sm);
  color: var(--text-muted);
  line-height: 1.5;
}

/* ==================================================================
   FORM
   ================================================================== */

.form-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
  align-items: start;
}

@media (min-width: 960px) {
  .form-wrap {
    grid-template-columns: 5fr 7fr;
    gap: var(--space-24);
  }
}

.form-intro h2 {
  color: var(--text-on-dark);
  margin-bottom: var(--space-6);
}

.form-intro p {
  color: var(--text-on-dark-muted);
  font-size: var(--text-lg);
  line-height: 1.55;
  margin-bottom: var(--space-8);
}

.form-intro__note {
  padding: var(--space-4) var(--space-6);
  border-left: 2px solid var(--accent);
  background: var(--bg-dark-alt);
  color: var(--text-on-dark-muted);
  font-size: var(--text-sm) !important;
}

.form {
  display: grid;
  gap: var(--space-5);
}

.form__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-5);
}

@media (min-width: 640px) {
  .form__row { grid-template-columns: 1fr 1fr; }
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.field label {
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-on-dark-muted);
}

.field input,
.field textarea {
  background: transparent;
  color: #ffffff;
  border: 0;
  border-bottom: 1px solid #444;
  padding: var(--space-3) 0;
  font-size: var(--text-base);
  transition: border-color 0.25s ease;
  font-family: inherit;
  resize: vertical;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-bottom-color: #ffffff;
}

.field input::placeholder,
.field textarea::placeholder {
  color: #555;
}

.field textarea {
  min-height: 120px;
}

.form__actions {
  display: flex;
  justify-content: flex-start;
  margin-top: var(--space-4);
}

.form__success {
  display: none;
  padding: var(--space-8);
  background: var(--bg-dark-alt);
  border: 1px solid #444;
  border-left: 3px solid #ffffff;
  color: #ffffff;
  border-radius: var(--radius-md);
}

.form__success[data-visible="true"] {
  display: block;
  animation: fadeUp 0.5s var(--ease);
}

.form__success h3 {
  margin-bottom: var(--space-3);
  font-size: var(--text-xl);
}

.form__success p {
  color: var(--text-on-dark-muted);
  font-size: var(--text-sm);
  margin-bottom: var(--space-2);
}

.form__success p:last-child {
  color: #888;
  font-size: var(--text-xs);
  margin-bottom: 0;
  margin-top: var(--space-3);
  font-style: italic;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==================================================================
   CONTACTS
   ================================================================== */

.contacts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  margin-top: var(--space-12);
}

@media (min-width: 720px) {
  .contacts-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .contacts-grid { grid-template-columns: repeat(4, 1fr); }
}

.contact-card {
  padding: var(--space-8);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: border-color 0.3s ease, transform 0.3s ease;
}

.contact-card:hover {
  border-color: var(--text);
  transform: translateY(-3px);
}

.contact-card__label {
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-2);
}

.contact-card a {
  display: block;
  font-size: var(--text-base);
  font-weight: 500;
  transition: color 0.2s ease;
}

.contact-card a:hover {
  color: var(--text-muted);
}

.contact-card__text {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: var(--text-muted);
}

.legal-strip {
  margin-top: var(--space-16);
  padding-top: var(--space-8);
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-8);
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.legal-strip span strong {
  color: var(--text);
  font-weight: 600;
  margin-right: var(--space-2);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: var(--text-xs);
}

/* ==================================================================
   FOOTER
   ================================================================== */

.footer {
  background: #0f0f0f;
  color: #ffffff;
  padding-block: var(--space-20) var(--space-8);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-16);
}

@media (min-width: 720px) {
  .footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-8);
  }
}

.footer__brand {
  max-width: 320px;
}

.footer__brand .logo {
  color: #ffffff;
  margin-bottom: var(--space-6);
}

.footer__tag {
  font-size: var(--text-sm);
  color: #888;
  line-height: 1.6;
}

.footer__col h4 {
  font-size: var(--text-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: #888;
  margin-bottom: var(--space-4);
  font-weight: 600;
}

.footer__col ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__col a {
  font-size: var(--text-sm);
  color: #d4d4d4;
  transition: color 0.2s ease;
}

.footer__col a:hover {
  color: #ffffff;
}

.footer__bottom {
  padding-top: var(--space-8);
  border-top: 1px solid #333;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: var(--text-xs);
  color: #888;
  letter-spacing: 0.05em;
}

/* ==================================================================
   Animations (scroll reveal)
   ================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}

.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}