/**
 * SKYPURE — Layout & Structural Architecture (Regulated Architectural Direction)
 * Header, Navigation, Hero, Main Sections & Footer
 */

/* ==========================================================================
   01. HEADER & NAVIGATION
   ========================================================================== */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: var(--z-header);
  background: rgba(5, 6, 7, 0.7);
  border-bottom: 1px solid rgba(184, 183, 178, 0.08);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: height var(--transition-base), background-color var(--transition-base), border-color var(--transition-base);
}

.site-header.is-scrolled {
  height: var(--header-height-scrolled);
  background: rgba(7, 17, 28, 0.95);
  border-bottom-color: var(--border-subtle);
  box-shadow: 0 10px 30px rgba(5, 6, 7, 0.5);
}

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

/* Brand Logo */
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.brand:hover {
  opacity: 0.88;
}

.brand-logo-img {
  width: 46px;
  height: 46px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
  filter: drop-shadow(0 0 1px rgba(255, 255, 255, 0.4));
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-logo {
  font-family: var(--font-sans);
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: var(--tracking-widest);
  color: var(--color-white);
  line-height: 1;
}

.brand-tagline {
  font-size: 0.65rem;
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--tracking-wider);
  color: var(--color-concrete);
  text-transform: uppercase;
  margin-top: 5px;
}

/* Desktop Navigation */
.nav-desktop {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-link {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-wider);
  color: var(--color-concrete);
  text-transform: uppercase;
  position: relative;
  padding: 6px 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background-color: var(--color-white);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-fast);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--color-white);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-cta {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.header-phone {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-light-concrete);
  letter-spacing: var(--tracking-wide);
  text-decoration: none;
  transition: color var(--transition-fast);
  display: none;
}

.header-phone:hover {
  color: var(--color-white);
}

@media (min-width: 1200px) {
  .header-phone {
    display: inline-block;
  }
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  width: 42px;
  height: 42px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: 1px solid var(--border-medium);
  cursor: pointer;
  z-index: calc(var(--z-header) + 1);
}

.mobile-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background-color: var(--color-white);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-toggle.is-active span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.mobile-toggle.is-active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.is-active span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* Mobile Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  max-width: 380px;
  height: 100vh;
  background-color: var(--color-dark-navy);
  border-left: 1px solid var(--border-medium);
  z-index: var(--z-header);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 100px var(--space-xl) var(--space-xl);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  box-shadow: -20px 0 50px rgba(5, 6, 7, 0.8);
}

.mobile-drawer.is-open {
  transform: translateX(0);
}

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

.mobile-nav-link {
  font-family: var(--font-sans);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--tracking-wide);
  color: var(--color-concrete);
  text-transform: uppercase;
}

.mobile-nav-link.is-active,
.mobile-nav-link:hover {
  color: var(--color-white);
}

/* ==========================================================================
   02. HERO SCROLLYTELLING & VIDEO SCRUB TRACK
   ========================================================================== */

.hero-scroll-track {
  position: relative;
  height: 320vh; /* Smooth and controlled scroll progression */
  background-color: var(--color-black);
}

.hero-sticky-stage {
  position: sticky;
  top: 0;
  height: 100vh;
  width: 100%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-black);
}

/* Fullscreen Background Video Layer */
.hero-video-wrap {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  overflow: hidden;
}

.hero-bg-canvas,
.hero-bg-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center center;
  display: block;
  filter: contrast(1.08) brightness(0.92);
  will-change: contents;
}

.hero-video-overlay {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 50% 45%, rgba(11, 26, 42, 0.42) 0%, rgba(5, 6, 7, 0.88) 85%),
    linear-gradient(to bottom, rgba(5, 6, 7, 0.55) 0%, transparent 40%, rgba(5, 6, 7, 0.96) 100%);
  z-index: 2;
  pointer-events: none;
}

/* Scrollytelling Panels Container */
.hero-scrolly-container {
  position: relative;
  z-index: 5;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.hero-scrolly-panel {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-3xl) var(--container-pad);
  pointer-events: none;
  opacity: 1;
  transform: translate3d(0, 0, 0);
  will-change: transform, opacity;
}

.hero-scrolly-panel.panel-brand {
  pointer-events: auto;
}

.hero-scrolly-panel.panel-statement {
  pointer-events: none;
  opacity: 0;
  max-width: 900px;
  margin: 0 auto;
}

.hero-eyebrow {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-widest);
  color: var(--color-concrete);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.hero-brand-title {
  font-family: var(--font-sans);
  font-size: var(--text-display);
  font-weight: 800;
  line-height: 0.92;
  letter-spacing: var(--tracking-widest);
  margin-right: calc(-1 * var(--tracking-widest));
  color: var(--color-white);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
  text-shadow: 0 10px 40px rgba(5, 6, 7, 0.85);
  text-align: center;
}

.hero-slogan {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-wide);
  color: var(--color-light-concrete);
  text-transform: uppercase;
  margin-bottom: var(--space-xs);
  text-align: center;
}

.hero-subpositioning {
  font-size: var(--text-base);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--tracking-wider);
  color: var(--color-concrete);
  margin-bottom: var(--space-xl);
  text-transform: uppercase;
  text-align: center;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-sm);
  margin-left: auto;
  margin-right: auto;
}

.hero-cta-group .btn {
  padding: 12px 22px;
  font-size: 0.775rem;
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-wider);
}

/* Panel 2: Statement Typography */
.statement-eyebrow {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--tracking-widest);
  color: var(--color-concrete);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.statement-headline-scrolly {
  font-family: var(--font-sans);
  font-size: clamp(2.2rem, 5.5vw, 4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: var(--tracking-tighter);
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: var(--space-lg);
  text-shadow: 0 10px 40px rgba(5, 6, 7, 0.95);
}

.statement-body-scrolly {
  font-size: clamp(1rem, 1.8vw, 1.35rem);
  line-height: 1.65;
  color: var(--color-light-concrete);
  max-width: 740px;
  margin: 0 auto;
  text-shadow: 0 4px 20px rgba(5, 6, 7, 0.9);
}

/* Hero Bottom Status & Progress Bar */
.hero-bottom-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: var(--space-md) var(--container-pad);
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 6;
  border-top: 1px solid rgba(184, 183, 178, 0.1);
  background: linear-gradient(180deg, transparent, rgba(5, 6, 7, 0.9));
}

.hero-scroll-cue {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--tracking-wider);
  color: var(--color-concrete);
  text-transform: uppercase;
}

.hero-scroll-track-line {
  width: 48px;
  height: 2px;
  background: rgba(255, 255, 255, 0.18);
  position: relative;
  overflow: hidden;
}

.hero-scroll-progress-indicator {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0%;
  background: var(--color-white);
  transition: width 0.08s linear;
}

.hero-status-meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--tracking-wider);
  color: var(--color-concrete);
  opacity: 0.85;
  text-transform: uppercase;
}

.hero-status-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background-color: var(--color-concrete);
}

/* ==========================================================================
   04. "BİZ KİMİZ?" SECTION
   ========================================================================== */

.about-layout {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: var(--space-3xl);
  align-items: stretch;
}

.about-content {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-lg);
}

.about-content .section-header {
  margin-bottom: var(--space-xs);
}

.about-lead {
  font-size: var(--text-xl);
  line-height: 1.55;
  color: var(--text-primary);
  font-weight: var(--font-weight-medium);
}

.about-body {
  font-size: var(--text-base);
  color: var(--text-muted);
  line-height: 1.7;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  margin-top: var(--space-md);
}

.about-stat-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xs);
}

.about-stat-num {
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
}

.about-stat-label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--tracking-wider);
  color: var(--color-concrete);
  text-transform: uppercase;
}

.about-visual {
  display: flex;
  width: 100%;
  height: 100%;
}

.about-placeholder-vertical {
  width: 100%;
  height: 100%;
  min-height: 520px;
  aspect-ratio: auto;
  padding: 0;
  border: 1px solid var(--border-subtle);
  background-color: var(--color-dark-navy);
  overflow: hidden;
  position: relative;
}

.about-placeholder-vertical .arch-placeholder-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  display: block;
}


/* ==========================================================================
   05. FOOTER
   ========================================================================== */

.site-footer {
  background-color: var(--color-black);
  border-top: 1px solid var(--border-subtle);
  padding-top: var(--space-3xl);
  padding-bottom: var(--space-2xl);
  position: relative;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 380px;
}

.footer-brand-header {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-brand-logo-img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
  filter: drop-shadow(0 0 1px rgba(255, 255, 255, 0.4));
}

.footer-brand-title {
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: var(--tracking-widest);
  color: var(--color-white);
  line-height: 1;
}

.footer-brand-slogan {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-concrete);
  letter-spacing: var(--tracking-wide);
}

.footer-col-title {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-bold);
  letter-spacing: var(--tracking-widest);
  color: var(--color-white);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.footer-link {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--tracking-wider);
  color: var(--color-concrete);
  text-transform: uppercase;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-white);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--tracking-wider);
  color: var(--text-dim);
  text-transform: uppercase;
}

/* ==========================================================================
   06. DARK NAVY SECTIONS WITH SUBTLE FADE-OUT ARCHITECTURAL FACADES
   ========================================================================== */

.section-navy-facade {
  position: relative;
  background-color: var(--color-dark-navy);
  overflow: hidden;
}

/* Base facade background pseudo-element */
.section-navy-facade::before {
  content: "";
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center center;
  background-repeat: no-repeat;
  opacity: 0.10; /* Max 10% visibility */
  filter: grayscale(100%) contrast(1.18) brightness(0.92);
  pointer-events: none;
  z-index: 0;
  -webkit-mask-image: radial-gradient(ellipse 90% 75% at 50% 50%, rgba(0, 0, 0, 1) 25%, rgba(0, 0, 0, 0) 100%);
  mask-image: radial-gradient(ellipse 90% 75% at 50% 50%, rgba(0, 0, 0, 1) 25%, rgba(0, 0, 0, 0) 100%);
}

/* Smooth edge fade-out gradient overlay */
.section-navy-facade::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, var(--color-dark-navy) 0%, transparent 12%, transparent 88%, var(--color-dark-navy) 100%);
  pointer-events: none;
  z-index: 0;
}

/* Individual facade images for each navy section */
.section-navy-facade.facade-why::before {
  background-image: url('../images/Background_photos/01.jpg');
}

.section-navy-facade.facade-process::before {
  background-image: url('../images/Background_photos/02.jpg');
  background-position: center 35%;
}

.section-navy-facade.facade-contact::before {
  background-image: url('../images/Background_photos/03.jpg');
}

/* Keep all content positioned above the facade layers */
.section-navy-facade > .container,
.section-navy-facade > * {
  position: relative;
  z-index: 1;
}

/* Subtle glassmorphism on navy cards to reveal underlying facade */
.section-navy-facade .trust-card {
  background-color: rgba(11, 26, 42, 0.72);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

.section-navy-facade .trust-card:hover {
  background-color: var(--color-black);
}

.section-navy-facade .process-step {
  background-color: rgba(11, 26, 42, 0.72);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

.section-navy-facade .process-step:hover,
.section-navy-facade .process-step.is-active {
  background-color: var(--color-black);
}

.section-navy-facade .contact-direct-item {
  background-color: rgba(11, 26, 42, 0.75);
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}