/* ==========================================
   RICHARD VIDZRAKOU PORTFOLIO - MAIN STYLES
   Modern Professional Design
   Color Scheme: Black, Orange, White
   ========================================== */

:root {
  /* Primary Colors */
  --primary-black: #0a0a0a;
  --primary-orange: #ff6b35;
  --primary-white: #ffffff;
  
  /* Secondary Colors */
  --dark-gray: #1a1a1a;
  --medium-gray: #2a2a2a;
  --light-gray: #f8f9fa;
  --text-gray: #6c757d;
  --border-gray: #e9ecef;
  
  /* Orange Variations */
  --orange-light: #ff8c42;
  --orange-dark: #e55a2b;
  --orange-bg: rgba(255, 107, 53, 0.1);
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15), 0 10px 10px rgba(0, 0, 0, 0.04);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --primary-black: #ffffff;
  --primary-white: #0a0a0a;
  --dark-gray: #e5e5e5;
  --medium-gray: #d5d5d5;
  --light-gray: #0f1419;
  --text-gray: #a3a8b3;
  --border-gray: #2a2a2a;
  
  /* Dark mode shadows */
  --shadow-sm: 0 1px 3px rgba(255, 255, 255, 0.12), 0 1px 2px rgba(255, 255, 255, 0.24);
  --shadow-md: 0 4px 6px rgba(255, 255, 255, 0.07), 0 1px 3px rgba(255, 255, 255, 0.06);
  --shadow-lg: 0 10px 15px rgba(255, 255, 255, 0.1), 0 4px 6px rgba(255, 255, 255, 0.05);
  --shadow-xl: 0 20px 25px rgba(255, 255, 255, 0.15), 0 10px 10px rgba(255, 255, 255, 0.04);
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-primary);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--primary-black);
  background-color: var(--primary-white);
  overflow-x: hidden;
}

/* ==========================================
   TYPOGRAPHY
   ========================================== */

h1, h2, h3, h4, h5, h6 {
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--primary-black);
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h5 { font-size: clamp(1.125rem, 2vw, 1.25rem); }
h6 { font-size: clamp(1rem, 1.5vw, 1.125rem); }

p {
  margin-bottom: var(--spacing-sm);
  color: var(--text-gray);
  font-weight: var(--font-weight-normal);
}

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

a:hover {
  color: var(--orange-dark);
}

/* ==========================================
   LAYOUT COMPONENTS
   ========================================== */

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

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
}

/* Section Headers */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xxl);
}

.section-subtitle {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: var(--font-weight-semibold);
  color: var(--primary-orange);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--spacing-xs);
  position: relative;
}

.section-subtitle::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 2px;
  background: var(--primary-orange);
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: var(--font-weight-bold);
  color: var(--primary-black);
  margin-bottom: var(--spacing-sm);
}

.section-description {
  font-size: 1.125rem;
  color: var(--text-gray);
  max-width: 600px;
  margin: 0 auto;
}

/* ==========================================
   LOADING SCREEN
   ========================================== */

#loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--primary-black);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transition: opacity 0.5s ease;
}

#loading-screen.hidden {
  opacity: 0;
  pointer-events: none;
}

.loader {
  text-align: center;
}

.loader-circle {
  width: 60px;
  height: 60px;
  border: 3px solid rgba(255, 107, 53, 0.3);
  border-top: 3px solid var(--primary-orange);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto var(--spacing-sm);
}

.loader-text {
  color: var(--primary-white);
  font-weight: var(--font-weight-medium);
  letter-spacing: 1px;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ==========================================
   NAVIGATION
   ========================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: var(--transition-medium);
  padding: var(--spacing-sm) 0;
}

.navbar.scrolled {
  background: var(--primary-black);
  box-shadow: var(--shadow-md);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo .logo-text {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--primary-orange);
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 45px;
  height: 45px;
  border: 2px solid var(--primary-orange);
  border-radius: var(--radius-md);
  transition: var(--transition-medium);
}

.nav-logo .logo-text:hover {
  background: var(--primary-orange);
  color: var(--primary-white);
  transform: scale(1.05);
}

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

.nav-link {
  color: var(--primary-white);
  font-weight: var(--font-weight-medium);
  font-size: 0.9rem;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-orange);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary-orange);
  transition: var(--transition-fast);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--primary-orange);
  color: var(--primary-orange);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  background: var(--primary-orange);
  color: var(--primary-white);
}

/* Mobile Navigation */
.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  padding: var(--spacing-xs);
}

.hamburger .bar {
  width: 25px;
  height: 3px;
  background: var(--primary-white);
  margin: 3px 0;
  transition: var(--transition-fast);
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background: var(--primary-black);
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    padding-top: var(--spacing-xl);
    transition: var(--transition-medium);
  }

  .nav-menu.active {
    left: 0;
  }

  .nav-item {
    margin: var(--spacing-sm) 0;
  }

  .hamburger {
    display: flex;
  }

  .hamburger.active .bar:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
  }

  .hamburger.active .bar:nth-child(2) {
    opacity: 0;
  }

  .hamburger.active .bar:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
  }
}

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

.hero {
  min-height: 100vh;
  background: linear-gradient(135deg, var(--primary-black) 0%, var(--dark-gray) 100%);
  color: var(--primary-white);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 100px; /* Add padding to prevent navbar overlap */
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.1;
}

.hero-particles {
  position: absolute;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 20% 30%, var(--primary-orange) 1px, transparent 1px),
    radial-gradient(circle at 80% 70%, var(--primary-orange) 1px, transparent 1px),
    radial-gradient(circle at 40% 80%, var(--primary-orange) 1px, transparent 1px);
  background-size: 100px 100px, 150px 150px, 200px 200px;
  animation: float 20s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-20px); }
}

.hero-content {
  text-align: center;
  z-index: 2;
  position: relative;
}

.hero-image {
  position: relative;
  display: inline-block;
  margin-bottom: var(--spacing-lg);
}

.profile-img {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  border: 4px solid var(--primary-orange);
  box-shadow: var(--shadow-xl);
  transition: var(--transition-medium);
}

.profile-img:hover {
  transform: scale(1.05);
  box-shadow: 0 0 30px rgba(255, 107, 53, 0.3);
}

.status-indicator {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: var(--primary-black);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.75rem;
  font-weight: var(--font-weight-medium);
  border: 1px solid var(--primary-orange);
}

.status-dot {
  width: 8px;
  height: 8px;
  background: #00ff88;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(0, 255, 136, 0.7); }
  70% { box-shadow: 0 0 0 10px rgba(0, 255, 136, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 255, 136, 0); }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--spacing-sm);
  line-height: 1.1;
  color: var(--primary-white); /* Make title white for better visibility */
}

.highlight {
  color: var(--primary-orange);
  position: relative;
}

.hero-subtitle {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: var(--font-weight-medium);
  color: var(--primary-orange);
  margin-bottom: var(--spacing-sm);
}

.hero-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: #b3b3b3;
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: var(--font-weight-bold);
  color: var(--primary-orange);
  line-height: 1;
}

.stat-label {
  font-size: 0.875rem;
  color: #b3b3b3;
  font-weight: var(--font-weight-medium);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.social-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
}

.social-links a {
  width: 50px;
  height: 50px;
  border: 2px solid var(--primary-orange);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-orange);
  font-size: 1.25rem;
  transition: var(--transition-medium);
}

.social-links a:hover {
  background: var(--primary-orange);
  color: var(--primary-white);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
}

.scroll-down {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--primary-white);
  text-decoration: none;
  transition: var(--transition-medium);
}

.scroll-down:hover {
  color: var(--primary-orange);
  transform: translateY(-5px);
}

.scroll-down span {
  font-size: 0.875rem;
  margin-bottom: var(--spacing-xs);
  font-weight: var(--font-weight-medium);
}

.scroll-down i {
  font-size: 1.5rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-10px); }
  60% { transform: translateY(-5px); }
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--radius-md);
  font-family: inherit;
  font-weight: var(--font-weight-semibold);
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: var(--transition-slow);
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: var(--primary-orange);
  color: var(--primary-white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--orange-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: var(--primary-white);
  color: var(--primary-black);
  border: 2px solid var(--primary-white);
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  background: transparent;
  color: var(--primary-white);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--primary-orange);
  border: 2px solid var(--primary-orange);
}

.btn-outline:hover {
  background: var(--primary-orange);
  color: var(--primary-white);
  transform: translateY(-2px);
}

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: 0.875rem;
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

@media (max-width: 768px) {
  .hero-stats {
    gap: var(--spacing-lg);
  }
  
  .hero-actions {
    flex-direction: column;
    align-items: center;
  }
  
  .status-indicator {
    position: absolute;
    bottom: -15px;
    right: 50%;
    transform: translateX(50%);
    font-size: 0.7rem;
    padding: 4px 8px;
    border-radius: 15px;
  }
  
  .status-text {
    display: none;
  }
  
  .btn {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .profile-img {
    width: 150px;
    height: 150px;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .social-links a {
    width: 45px;
    height: 45px;
    font-size: 1.125rem;
  }
}