/* ========================================
   Baniastav – Main Styles
   ======================================== */

/* --- Custom Properties --- */
:root {
  --color-bg: #FFFFFF;
  --color-bg-alt: #F5F7FA;
  --color-primary: #1B2A4A;
  --color-accent: #F28C28;
  --color-accent-hover: #D4751A;
  --color-text: #333333;
  --color-text-light: #6B7280;
  --color-white: #FFFFFF;

  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --font-size-4xl: 3.5rem;

  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 5rem;
  --spacing-3xl: 8rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 16px 50px rgba(0,0,0,0.15);

  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;

  --navbar-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--navbar-height);
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* --- Section --- */
.section {
  padding: var(--spacing-3xl) 0;
}

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

.section__title {
  font-size: var(--font-size-3xl);
  font-weight: 800;
  color: var(--color-primary);
  text-align: center;
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.section__title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: var(--color-accent);
  margin: var(--spacing-sm) auto 0;
  border-radius: 2px;
}

.section__subtitle {
  text-align: center;
  color: var(--color-text-light);
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: calc(-1 * var(--spacing-lg)) auto var(--spacing-2xl);
}

/* --- Button --- */
.btn {
  display: inline-block;
  padding: 0.875rem 2rem;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(242, 140, 40, 0.3);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(242, 140, 40, 0.4);
}

.btn--full {
  width: 100%;
}

/* ========================================
   NAVBAR
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--navbar-height);
  transition: all var(--transition-base);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.navbar__logo {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-white);
  transition: color var(--transition-base);
  letter-spacing: -0.02em;
}

.navbar.scrolled .navbar__logo {
  color: var(--color-primary);
}

.navbar__menu {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.navbar__link {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
  position: relative;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition-base);
}

.navbar__link:hover::after,
.navbar__link.active::after {
  width: 100%;
}

.navbar.scrolled .navbar__link {
  color: var(--color-primary);
}

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

.navbar__link--cta {
  background: var(--color-accent);
  color: var(--color-white) !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
}

.navbar__link--cta::after {
  display: none;
}

.navbar__link--cta:hover {
  background: var(--color-accent-hover);
  color: var(--color-white) !important;
}

/* Hamburger */
.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1001;
}

.navbar__toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: all var(--transition-base);
  border-radius: 1px;
}

.navbar.scrolled .navbar__toggle-bar {
  background: var(--color-primary);
}

.navbar__toggle.open .navbar__toggle-bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar__toggle.open .navbar__toggle-bar:nth-child(2) {
  opacity: 0;
}

.navbar__toggle.open .navbar__toggle-bar:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ========================================
   HERO
   ======================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-primary);
}

.hero__parallax-bg {
  position: absolute;
  inset: -20%;
  background: linear-gradient(135deg, #1B2A4A 0%, #2d4470 50%, #1B2A4A 100%);
  z-index: 0;
  will-change: transform;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 0%, rgba(0,0,0,0.3) 100%);
  z-index: 1;
}

.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-white);
  padding: var(--spacing-2xl) 0;
}

.hero__heading {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: var(--spacing-sm);
  position: relative;
  display: inline-block;
  overflow: hidden;
}

.hero__heading::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 60%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(242, 140, 40, 0.15) 25%,
    rgba(255, 255, 255, 0.25) 50%,
    rgba(242, 140, 40, 0.15) 75%,
    transparent 100%
  );
  animation: heroShimmer 1.2s ease-in-out 1.5s forwards;
  pointer-events: none;
}

@keyframes heroShimmer {
  0% {
    left: -60%;
  }
  100% {
    left: 120%;
  }
}

.hero__subheading {
  font-size: clamp(1.125rem, 3vw, 1.5rem);
  font-weight: 500;
  opacity: 0.9;
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.hero__text {
  font-size: var(--font-size-lg);
  opacity: 0.8;
  max-width: 500px;
  margin: 0 auto var(--spacing-lg);
}

.hero__cta {
  font-size: var(--font-size-lg);
  padding: 1rem 2.5rem;
}

.hero__scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}

.hero__scroll-indicator span {
  display: block;
  width: 24px;
  height: 40px;
  border: 2px solid rgba(255,255,255,0.5);
  border-radius: 12px;
  position: relative;
}

.hero__scroll-indicator span::after {
  content: '';
  display: block;
  width: 4px;
  height: 8px;
  background: rgba(255,255,255,0.7);
  border-radius: 2px;
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
  50% { transform: translateX(-50%) translateY(10px); opacity: 0.3; }
}

/* ========================================
   ABOUT
   ======================================== */
.about__content {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--spacing-2xl);
  align-items: start;
}

.about__text p {
  font-size: var(--font-size-lg);
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

.about__values {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.about__value {
  padding: var(--spacing-md);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-accent);
}

.about__value h3 {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.about__value p {
  font-size: var(--font-size-sm) !important;
  color: var(--color-text-light) !important;
  margin-bottom: 0 !important;
  line-height: 1.5 !important;
}

.about__stats {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  background: var(--color-primary);
  border-radius: var(--radius-lg);
  color: var(--color-white);
}

.stat {
  text-align: center;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.stat:last-child {
  border-bottom: none;
}

.stat__number {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  color: var(--color-accent);
  display: inline;
}

.stat__suffix {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-accent);
}

.stat__label {
  display: block;
  font-size: var(--font-size-sm);
  opacity: 0.8;
  margin-top: var(--spacing-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ========================================
   SERVICES
   ======================================== */
.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.service-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid rgba(0,0,0,0.04);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.service-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  color: var(--color-accent);
}

.service-card__icon svg {
  width: 100%;
  height: 100%;
}

.service-card__title {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
}

.service-card__text {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

/* ========================================
   REFERENCES
   ======================================== */
.references__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.ref-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  border: 1px solid rgba(0,0,0,0.04);
}

.ref-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.ref-card__image-wrap {
  overflow: hidden;
}

.ref-card__image {
  height: 220px;
  background-size: cover;
  background-position: center;
  background-color: var(--color-bg-alt);
  transition: transform var(--transition-slow);
  cursor: pointer;
  position: relative;
}

.ref-card:hover .ref-card__image {
  transform: scale(1.05);
}

.ref-card__overlay {
  position: absolute;
  inset: 0;
  background: rgba(27, 42, 74, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.ref-card__image:hover .ref-card__overlay {
  opacity: 1;
}

.ref-card__zoom {
  color: var(--color-white);
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.ref-card__body {
  padding: var(--spacing-md);
}

.ref-card__year {
  font-size: var(--font-size-sm);
  color: var(--color-accent);
  font-weight: 600;
}

.ref-card__title {
  font-size: var(--font-size-base);
  font-weight: 700;
  color: var(--color-primary);
  margin: var(--spacing-xs) 0;
}

.ref-card__text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.6;
}

/* ========================================
   LIGHTBOX
   ======================================== */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox__close {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: white;
  font-size: 2.5rem;
  cursor: pointer;
  z-index: 2001;
  line-height: 1;
  transition: transform var(--transition-fast);
}

.lightbox__close:hover {
  transform: scale(1.2);
}

.lightbox__content {
  max-width: 90vw;
  max-height: 85vh;
  text-align: center;
}

.lightbox__img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.lightbox__caption {
  color: rgba(255,255,255,0.8);
  margin-top: var(--spacing-sm);
  font-size: var(--font-size-sm);
}

.lightbox__prev,
.lightbox__next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255,255,255,0.1);
  border: none;
  color: white;
  font-size: 2rem;
  padding: 0.5rem 1rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.lightbox__prev:hover,
.lightbox__next:hover {
  background: rgba(255,255,255,0.2);
}

.lightbox__prev { left: 1rem; }
.lightbox__next { right: 1rem; }

/* ========================================
   CONTACT
   ======================================== */
.contact__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-2xl);
  align-items: start;
}

.contact__item {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
  margin-bottom: var(--spacing-lg);
}

.contact__icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  color: var(--color-accent);
  margin-top: 2px;
}

.contact__item strong {
  display: block;
  color: var(--color-primary);
  font-weight: 600;
  margin-bottom: 2px;
}

.contact__item a,
.contact__item span {
  color: var(--color-text-light);
  font-size: var(--font-size-sm);
}

/* Form */
.form__group {
  margin-bottom: var(--spacing-md);
}

.form__label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
}

.form__input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid #E5E7EB;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form__input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(242, 140, 40, 0.15);
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  margin-bottom: var(--spacing-lg);
}

.footer__logo {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-white);
}

.footer__tagline {
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-sm);
}

.footer__contact a {
  color: rgba(255,255,255,0.7);
}

.footer__contact a:hover {
  color: var(--color-accent);
}

.footer__contact p {
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-sm);
}

.footer__copy {
  grid-column: 1 / -1;
  text-align: center;
  font-size: var(--font-size-sm);
}

.footer__admin {
  color: rgba(255, 255, 255, 0.25);
  margin-left: 0.5rem;
  font-size: 0.75rem;
  transition: color 0.3s ease;
}

.footer__admin:hover {
  color: rgba(255, 255, 255, 0.6);
}

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 992px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

  .about__stats {
    flex-direction: row;
    justify-content: space-around;
  }

  .stat {
    border-bottom: none;
    border-right: 1px solid rgba(255,255,255,0.1);
    padding: var(--spacing-sm) var(--spacing-lg);
  }

  .stat:last-child {
    border-right: none;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-3xl: 2rem;
    --spacing-3xl: 5rem;
  }

  /* Mobile nav */
  .navbar__toggle {
    display: flex;
  }

  .navbar__menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-white);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-lg);
    transition: right var(--transition-base);
    box-shadow: var(--shadow-xl);
  }

  .navbar__menu.open {
    right: 0;
  }

  .navbar__menu .navbar__link {
    color: var(--color-primary);
    font-size: var(--font-size-lg);
  }

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

  .about__stats {
    flex-direction: column;
  }

  .stat {
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    padding: var(--spacing-md) 0;
  }

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

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

@media (max-width: 576px) {
  .services__grid,
  .references__grid {
    grid-template-columns: 1fr;
  }

  .hero__heading {
    font-size: 2.5rem;
  }
}