/* =====================================================
   Motorsport Photography Portfolio - Main Styles
   Bruno Surman
   ===================================================== */

/* ========== CSS Custom Properties ========== */
:root {
  /* Colors */
  --primary-red: #E10600;
  --primary-red-dark: #B30500;
  --silver: #C0C0C0;
  --silver-dark: #A0A0A0;
  --dark-bg: #0a0a0a;
  --dark-bg-elevated: #111111;
  --dark-bg-secondary: #1a1a1a;
  --text-primary: #FFFFFF;
  --text-secondary: #B0B0B0;
  --text-muted: #666666;
  
  /* Typography */
  --font-heading: 'Oswald', 'Arial Black', sans-serif;
  --font-body: 'Rajdhani', 'Segoe UI', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Z-index layers */
  --z-base: 1;
  --z-nav: 100;
  --z-cursor: 200;
  --z-lightbox: 1000;
  --z-loader: 2000;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--dark-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  cursor: none;
}

body.lightbox-open {
  overflow: hidden;
}

/* ========== Custom Cursor ========== */
.custom-cursor {
  position: fixed;
  top: 0;
  left: 0;
  width: 20px;
  height: 20px;
  border: 2px solid var(--primary-red);
  border-radius: 50%;
  pointer-events: none;
  z-index: var(--z-cursor);
  transform: translate(-50%, -50%);
  transition: transform 0.1s ease, opacity 0.2s ease;
  mix-blend-mode: difference;
}

.custom-cursor.hover {
  transform: translate(-50%, -50%) scale(1.5);
}

.custom-cursor.hidden {
  opacity: 0;
}

/* ========== Checkered Flag Background ========== */
.checkered-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.03;
  background-image: 
    repeating-linear-gradient(
      45deg,
      var(--text-primary) 0px,
      var(--text-primary) 10px,
      transparent 10px,
      transparent 20px
    ),
    repeating-linear-gradient(
      -45deg,
      var(--text-primary) 0px,
      var(--text-primary) 10px,
      transparent 10px,
      transparent 20px
    );
}

/* ========== Navigation ========== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  transition: background var(--transition-base);
}

.nav.scrolled {
  background: rgba(10, 10, 10, 0.98);
}

.nav-brand {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-number {
  font-family: var(--font-heading);
  color: var(--primary-red);
  font-size: 1.8rem;
  font-weight: 700;
}

.nav-filters {
  display: flex;
  gap: 0.5rem;
}

.filter-btn {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-muted);
  padding: 0.6rem 1.2rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  transition: all var(--transition-base);
  border-radius: 4px;
}

.filter-btn:hover {
  border-color: var(--primary-red);
  color: var(--primary-red);
}

.filter-btn.active {
  background: var(--primary-red);
  border-color: var(--primary-red);
  color: var(--text-primary);
}

/* ========== Hero Section ========== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-slideshow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(10, 10, 10, 0.4) 0%,
    rgba(10, 10, 10, 0.7) 50%,
    rgba(10, 10, 10, 1) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 2rem;
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 12vw, 8rem);
  font-weight: 700;
  letter-spacing: 8px;
  text-transform: uppercase;
  margin-bottom: 1rem;
  line-height: 1.1;
}

.title-line {
  display: inline-block;
  background: linear-gradient(90deg, var(--text-primary), var(--silver));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  margin-bottom: 3rem;
}

.subtitle-text {
  font-family: var(--font-body);
  font-size: clamp(1rem, 4vw, 1.8rem);
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 6px;
  text-transform: uppercase;
}

.hero-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 2px solid var(--primary-red);
  color: var(--primary-red);
  padding: 0.8rem 1.8rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  transition: all var(--transition-base);
  border-radius: 4px;
  text-decoration: none;
}

.hero-link:hover {
  background: var(--primary-red);
  color: var(--text-primary);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(225, 6, 0, 0.4);
}

.social-icon {
  width: 18px;
  height: 18px;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  z-index: 2;
  animation: fadeInUp 1s ease-out 1s backwards;
}

.scroll-text {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 3px;
  text-transform: uppercase;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
  animation: scrollBounce 2s infinite;
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--primary-red), transparent);
}

@keyframes scrollBounce {
  0%, 20%, 50%, 80%, 100% { transform: rotate(45deg) translateY(0); }
  40% { transform: rotate(45deg) translateY(8px); }
  60% { transform: rotate(45deg) translateY(4px); }
}

/* ========== Sections ========== */
.section {
  padding: var(--spacing-xl) var(--spacing-md);
  max-width: 1600px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 4px;
  margin-bottom: var(--spacing-lg);
  text-align: center;
  position: relative;
}

.title-inner {
  display: inline-block;
  position: relative;
}

.title-inner::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: var(--primary-red);
}

/* ========== About Section ========== */
.about-section {
  background: linear-gradient(to bottom, var(--dark-bg), var(--dark-bg-elevated));
}

.about-content {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.about-text p {
  margin-bottom: 1.5rem;
  color: var(--text-secondary);
  font-size: 1.15rem;
  line-height: 1.8;
}

.about-lead {
  font-size: 1.4rem !important;
  color: var(--text-primary) !important;
  font-weight: 500;
}

.about-contact {
  margin-top: 2rem;
}

.about-contact a {
  color: var(--primary-red);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--primary-red);
  transition: all var(--transition-base);
}

.about-contact a:hover {
  color: var(--text-primary);
  border-color: var(--text-primary);
}

/* ========== Featured Section ========== */
.featured-section {
  background: var(--dark-bg-secondary);
}

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

.featured-item {
  position: relative;
  aspect-ratio: 16/10;
  overflow: hidden;
  border-radius: 8px;
  cursor: pointer;
}

.featured-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.featured-item:hover img {
  transform: scale(1.1);
}

.featured-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem 1.5rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.featured-label {
  font-size: 0.75rem;
  color: var(--primary-red);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-weight: 600;
}

.featured-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* ========== Gallery Section ========== */
.gallery-section {
  padding-top: var(--spacing-lg);
}

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

.gallery-item {
  position: relative;
  aspect-ratio: 3/2;
  overflow: hidden;
  border-radius: 8px;
  cursor: pointer;
  opacity: 0;
  transform: translateY(30px);
  transition: all var(--transition-base);
}

.gallery-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.gallery-item.hidden {
  display: none;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.85), transparent);
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  opacity: 0;
  transform: translateY(10px);
  transition: all var(--transition-base);
}

.gallery-item:hover .gallery-caption {
  opacity: 1;
  transform: translateY(0);
}

.caption-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 2px;
}

.caption-location {
  font-size: 0.85rem;
  color: var(--silver);
}

/* ========== Contact Section ========== */
.contact-section {
  background: linear-gradient(to bottom, var(--dark-bg-elevated), var(--dark-bg));
  text-align: center;
}

.contact-content {
  max-width: 600px;
  margin: 0 auto;
}

.contact-text {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.contact-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
  background: transparent;
  border: 2px solid var(--primary-red);
  color: var(--primary-red);
  padding: 1rem 2rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  text-decoration: none;
  transition: all var(--transition-base);
  border-radius: 4px;
}

.contact-btn:hover {
  background: var(--primary-red);
  color: var(--text-primary);
  transform: translateY(-3px);
  box-shadow: 0 10px 30px rgba(225, 6, 0, 0.3);
}

.btn-icon {
  width: 20px;
  height: 20px;
}

/* ========== Footer ========== */
.footer {
  background: #050505;
  padding: 3rem 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
  z-index: 1;
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: color var(--transition-base);
}

.footer-links a:hover {
  color: var(--primary-red);
}

.footer-copyright {
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* ========== Loader ========== */
.loader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--dark-bg);
  z-index: var(--z-loader);
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

.loader-number {
  font-family: var(--font-heading);
  font-size: 4rem;
  color: var(--primary-red);
  animation: pulse 1s ease-in-out infinite;
}

.loader-bar {
  width: 200px;
  height: 3px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
}

.loader-progress {
  height: 100%;
  width: 0;
  background: var(--primary-red);
  animation: loadProgress 2s ease-out forwards;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes loadProgress {
  0% { width: 0; }
  100% { width: 100%; }
}

/* ========== Utility Classes ========== */
.fade-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s ease-out;
}

.fade-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Speed lines effect on page load */
.speed-lines {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  overflow: hidden;
}

.speed-line {
  position: absolute;
  width: 100px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary-red), transparent);
  animation: speedLine 1.5s ease-out forwards;
}

@keyframes speedLine {
  0% {
    transform: translateX(-100%) scaleX(0);
    opacity: 0;
  }
  20% {
    opacity: 1;
    transform: translateX(100vw) scaleX(2);
  }
  100% {
    opacity: 0;
    transform: translateX(100vw) scaleX(2);
  }
}