/* =========================================
   Layout: Container, Header, Footer, Nav
   ======================================== */

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

/* =========================================
   Header
   ======================================== */
.header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(0, 31, 63, 0.97);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(0, 123, 255, 0.2);
  transition: box-shadow var(--transition);
  padding-top: env(safe-area-inset-top);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  height: 100%;
  position: relative;
}

/* Logo */
.header__logo {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: .75rem;
  text-decoration: none;
  background: #fff;
  border-radius: 8px;
  padding: 4px 8px;
}

.header__logo-img {
  height: 56px;
  width: auto;
}

@media (min-width: 1024px) {
  .header__logo-img {
    height: 80px;
  }
}

/* Nav */
.nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(.5rem, 1.5vw, 1.5rem);
}

.nav__link {
  font-size: var(--size-sm);
  font-weight: 500;
  color: rgba(255,255,255,.85);
  padding: .25rem .125rem;
  border-bottom: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition);
  white-space: nowrap;
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

/* Header right */
.header__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.header__phone {
  font-size: var(--size-sm);
  font-weight: 600;
  color: rgba(255,255,255,.9);
  white-space: nowrap;
}

/* Burger */
.header__burger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  padding: 8px 6px;
  -webkit-tap-highlight-color: transparent;
  background: none;
  border: none;
}

.header__burger span {
  display: block;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.header__burger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.header__burger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.header__burger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav */
.nav--mobile {
  display: none;
  position: fixed;
  inset-block-start: var(--header-h);
  inset-inline: 0;
  background: var(--color-primary-dark);
  padding: 1.5rem var(--container-pad);
  border-bottom: 1px solid rgba(0, 123, 255, 0.2);
  z-index: 99;
  -webkit-overflow-scrolling: touch;
  overflow-y: auto;
  max-height: calc(100dvh - var(--header-h));
}

.nav--mobile.open {
  display: block;
}

.nav--mobile .nav__list {
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
}

.nav--mobile .nav__link {
  display: block;
  padding: .875rem 0;
  font-size: var(--size-base);
  border-bottom: 1px solid rgba(255,255,255,.08);
  width: 100%;
}

.nav--mobile .header__actions {
  margin-top: 1.25rem;
  flex-direction: column;
  align-items: flex-start;
}

/* Page offset for fixed header */
.page-wrap {
  padding-block-start: var(--header-h);
}

/* =========================================
   Section base
   ======================================== */
.section {
  padding-block: clamp(3rem, 8vw, 6rem);
}

.section--dark {
  background: var(--color-primary);
  color: #fff;
}

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

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

/* =========================================
   Parallax
   ======================================== */
.parallax-section {
  position: relative;
  background-color: transparent;
  clip-path: inset(0);
}

.parallax-section::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-image: url('../images/desk.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: -1;
  will-change: transform;
  pointer-events: none;
}

.parallax-section .container {
  background: rgba(255, 255, 255, 0.17);
  border-radius: 20px;
  padding-block: 3rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

@media (max-width: 768px) {
  .parallax-section::before {
    background-image: url('../images/mob.webp');
  }

  .parallax-section .container {
    border-radius: 14px;
    padding-block: 2rem;
  }
}

@media (max-width: 480px) {
  .parallax-section .container {
    border-radius: 10px;
    padding-block: 1.5rem;
  }
}

/* =========================================
   Parallax Alt (for About & Services)
   ======================================== */
.parallax-section-alt {
  position: relative;
  background-color: transparent;
  clip-path: inset(0);
}

.parallax-section-alt::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-image: url('../images/prodesk.webp');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  z-index: -1;
  will-change: transform;
  pointer-events: none;
}

.parallax-section-alt .container {
  background: rgba(255, 255, 255, 0.17);
  border-radius: 20px;
  padding-block: 3rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

@media (max-width: 768px) {
  .parallax-section-alt::before {
    background-image: url('../images/promob.webp');
  }

  .parallax-section-alt .container {
    border-radius: 14px;
    padding-block: 2rem;
  }
}

@media (max-width: 480px) {
  .parallax-section-alt .container {
    border-radius: 10px;
    padding-block: 1.5rem;
  }
}

/* =========================================
   Footer
   ======================================== */
.footer {
  background: var(--color-primary-dark);
  color: rgba(255,255,255,.7);
  padding-block: 2.5rem 1.5rem;
  padding-inline: var(--container-pad);
  padding-bottom: calc(1.5rem + env(safe-area-inset-bottom));
}

.footer__inner {
  max-width: var(--container);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.footer__logo-img {
  height: 70px;
  width: auto;
  margin-bottom: .75rem;
  display: block;
}

.footer__logo-text {
  font-size: var(--size-sm);
  color: rgba(255,255,255,.6);
  max-width: 220px;
  line-height: 1.5;
}

.footer__nav-title {
  font-size: var(--size-sm);
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: .75rem;
}

.footer__nav-list {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}

.footer__nav-link {
  font-size: var(--size-sm);
  color: rgba(255,255,255,.7);
  transition: color var(--transition);
}

.footer__nav-link:hover {
  color: var(--color-accent);
}

.footer__bottom {
  max-width: var(--container);
  margin-inline: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .5rem;
  padding-top: 1.25rem;
  font-size: var(--size-xs);
  color: rgba(255,255,255,.4);
}

.footer__copyright {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  align-items: center;
}

.footer__copyright-text {
  color: rgba(255,255,255,.4);
  margin: 0;
  padding: 0;
}

.footer__credit {
  color: rgba(255,255,255,.4);
  margin: 0;
  padding: 0;
}

.footer__credit-link {
  color: var(--color-accent);
  text-decoration: none;
  transition: all var(--transition);
  touch-action: manipulation;
  font-weight: 500;
}

.footer__credit-link:hover,
.footer__credit-link:focus-visible {
  color: var(--color-accent-light);
  text-decoration: underline;
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* =========================================
   Responsive — tablet & mobile
   ======================================== */
@media (min-width: 1024px) {
  .nav {
    display: flex;
  }

  .header__burger {
    display: none;
  }

  .header__phone {
    display: block;
  }

  .mobile-call-btn {
    display: none;
  }
}

@media (max-width: 1023px) {
  .nav {
    display: none;
  }

  .header {
    padding-inline: max(var(--container-pad), env(safe-area-inset-left))
                    max(var(--container-pad), env(safe-area-inset-right));
  }

  .header__burger {
    display: flex;
    order: 1;
    z-index: 10;
  }

  .header__logo {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    margin: 0;
    z-index: 5;
  }

  .header__actions {
    order: 3;
    z-index: 10;
  }

  .header__phone {
    display: none;
  }

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

  .footer__bottom {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer__copyright {
    justify-content: center;
  }
}

@media (max-width: 767px) {
  .mobile-call-btn {
    display: flex;
    position: fixed;
    bottom: 1.5rem;
    left: 1.5rem;
    z-index: 999;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--color-accent);
    color: #fff;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    -webkit-tap-highlight-color: transparent;
  }
}