/* 
   Main Stylesheet for Ruben's Portfolio
   Combines elements from trijbsworld.nl and trijbs.xyz
*/

/* ===== Variables ===== */
:root {
  /* Colors - Poster Theme (Default) */
  --bg-primary: #f6f5f3;
  --bg-secondary: #ffffff;
  --bg-tertiary: #efefef;
  --text-primary: #111111;
  --text-secondary: #393939;
  --text-tertiary: #6a6a6a;
  --accent-primary: #111111; /* bold type */
  --accent-secondary: #ff4d6d; /* warm highlight */
  --accent-tertiary: #1e90ff; /* cool alt */
  --accent-quaternary: #ed8b4a; /* Orange for clothing projects */
  --accent-quinary: #4a8bed; /* Blue for photography projects */
  --shadow-color: rgba(17, 17, 17, 0.06);
  --overlay-color: rgba(10,10,10,0.5);
  
  /* Gradient Colors */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-tertiary: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-quaternary: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
  --gradient-quinary: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  --gradient-hero: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
  --gradient-about: linear-gradient(135deg, rgba(240, 147, 251, 0.08) 0%, rgba(245, 87, 108, 0.08) 100%);
  --gradient-skills: linear-gradient(135deg, rgba(79, 172, 254, 0.08) 0%, rgba(0, 242, 254, 0.08) 100%);
  --gradient-projects: linear-gradient(135deg, rgba(67, 233, 123, 0.08) 0%, rgba(56, 249, 215, 0.08) 100%);
  --gradient-contact: linear-gradient(135deg, rgba(250, 112, 154, 0.08) 0%, rgba(254, 225, 64, 0.08) 100%);
  
  /* Animated Gradient Backgrounds */
  --gradient-animated-1: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
  --gradient-animated-2: linear-gradient(-45deg, #667eea, #764ba2, #f093fb, #f5576c);
  --gradient-animated-3: linear-gradient(-45deg, #4facfe, #00f2fe, #43e97b, #38f9d7);
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 5rem;
  
  /* Typography */
  --font-heading: 'Montserrat', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'Roboto Mono', monospace;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Container Width */
  --container-width: 1200px;
  
  /* Z-index layers */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

/* Dark Theme Variables */
[data-theme="dark"], .theme-dark {
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-tertiary: #2a2a2a;
  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --text-tertiary: #999999;
  --accent-primary: #ffffff;
  --accent-secondary: #ff6b8a;
  --accent-tertiary: #4da6ff;
  --shadow-color: rgba(255, 255, 255, 0.1);
  --overlay-color: rgba(255,255,255,0.1);
  
  /* Dark Theme Gradients */
  --gradient-hero: linear-gradient(135deg, rgba(102, 126, 234, 0.15) 0%, rgba(118, 75, 162, 0.15) 100%);
  --gradient-about: linear-gradient(135deg, rgba(240, 147, 251, 0.12) 0%, rgba(245, 87, 108, 0.12) 100%);
  --gradient-skills: linear-gradient(135deg, rgba(79, 172, 254, 0.12) 0%, rgba(0, 242, 254, 0.12) 100%);
  --gradient-projects: linear-gradient(135deg, rgba(67, 233, 123, 0.12) 0%, rgba(56, 249, 215, 0.12) 100%);
  --gradient-contact: linear-gradient(135deg, rgba(250, 112, 154, 0.12) 0%, rgba(254, 225, 64, 0.12) 100%);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }

p {
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

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

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

/* ===== Layout ===== */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

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

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(246, 245, 243, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--shadow-color);
  z-index: var(--z-fixed);
  transition: all var(--transition-normal);
  position: relative;
}

.header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0.02;
  z-index: -1;
}

.theme-dark .header {
  background: rgba(10, 10, 10, 0.95);
}

.theme-dark .header::before {
  opacity: 0.05;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-md);
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  text-decoration: none;
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

.main-nav a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: color var(--transition-fast);
}

.main-nav a:hover {
  color: var(--accent-secondary);
}

/* Theme Toggle */
.theme-toggle {
  background: none;
  border: 2px solid var(--text-tertiary);
  border-radius: var(--radius-full);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  border-color: var(--accent-secondary);
  transform: scale(1.05);
}

.theme-dark .dark-icon,
.theme-poster .light-icon {
  display: block;
}

.theme-dark .light-icon,
.theme-poster .dark-icon {
  display: none;
}

/* Mobile Menu */
.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

@media (max-width: 1024px) {
  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: var(--bg-secondary);
    padding: var(--spacing-xxl) var(--spacing-lg);
    transition: right var(--transition-normal);
    box-shadow: -5px 0 15px var(--shadow-color);
  }
  
  .nav-open .main-nav {
    right: 0;
  }
  
  .main-nav ul {
    flex-direction: column;
    gap: var(--spacing-lg);
  }
  
  .mobile-menu-toggle {
    display: block;
  }
  
  .theme-toggle {
    margin-right: var(--spacing-md);
  }
}

/* ===== Hero Section ===== */
.hero-section {
  padding: calc(80px + var(--spacing-xxl)) 0 var(--spacing-xxl);
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  background: var(--gradient-hero);
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-animated-1);
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
  opacity: 0.03;
  z-index: -1;
  will-change: background-position;
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  33% {
    transform: translateY(-20px) rotate(120deg);
  }
  66% {
    transform: translateY(10px) rotate(240deg);
  }
}

@keyframes floatReverse {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  33% {
    transform: translateY(15px) rotate(-120deg);
  }
  66% {
    transform: translateY(-25px) rotate(-240deg);
  }
}

/* Floating gradient orbs */
.hero-section::after {
  content: '';
  position: absolute;
  top: 20%;
  right: 10%;
  width: 200px;
  height: 200px;
  background: var(--gradient-secondary);
  border-radius: 50%;
  opacity: 0.1;
  animation: float 20s ease-in-out infinite;
  z-index: -1;
}

.about-section .container::before {
  content: '';
  position: absolute;
  top: -10%;
  right: -5%;
  width: 100px;
  height: 150px;
  background: var(--gradient-tertiary);
  border-radius: 50%;
  opacity: 0.08;
  animation: floatReverse 25s ease-in-out infinite;
  z-index: 0;
}

.skills-section .container::before {
  content: '';
  position: absolute;
  bottom: -10%;
  left: -5%;
  width: 180px;
  height: 180px;
  background: var(--gradient-quaternary);
  border-radius: 50%;
  opacity: 0.06;
  animation: float 30s ease-in-out infinite;
  z-index: 0;
}

.hero-content {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-xxl);
  align-items: center;
}

.profile-image {
  width: 300px;
  height: 300px;
  border-radius: var(--radius-lg);
  background-size: cover;
  background-position: center;
  box-shadow: 0 20px 40px var(--shadow-color);
}

.outline-title {
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 800;
  color: transparent;
  -webkit-text-stroke: 2px var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.highlight {
  color: var(--accent-secondary);
  font-weight: 600;
}

@media (max-width: 768px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--spacing-lg);
  }
  
  .profile-image {
    width: 250px;
    height: 250px;
    margin: 0 auto;
  }
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
  font-family: inherit;
}

.btn-primary {
  background: var(--gradient-secondary);
  color: white;
  position: relative;
  overflow: hidden;
}

.btn-primary::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: left 0.5s;
}

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

.btn-primary:hover {
  background: var(--gradient-tertiary);
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(255, 77, 109, 0.3);
}

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 2px solid var(--text-tertiary);
  position: relative;
  overflow: hidden;
}

.btn-secondary::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn-secondary:hover::before {
  opacity: 0.1;
}

.btn-secondary:hover {
  border-color: var(--accent-secondary);
  color: var(--accent-secondary);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 2px solid var(--text-primary);
  position: relative;
  overflow: hidden;
}

.btn-outline::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-quaternary);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn-outline:hover::before {
  opacity: 0.1;
}

.btn-outline:hover {
  background: var(--text-primary);
  color: var(--bg-primary);
}

/* ===== Sections ===== */
section {
  padding: var(--spacing-xxl) 0;
}

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

.section-tag {
  display: inline-block;
  background: var(--accent-secondary);
  color: white;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.section-title {
  margin-bottom: var(--spacing-md);
}

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

/* ===== About Section ===== */
.about-section {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.about-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-about);
  z-index: 0;
}

.about-section::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: var(--gradient-animated-2);
  background-size: 400% 400%;
  animation: gradientShift 20s ease infinite;
  opacity: 0.02;
  z-index: 0;
  will-change: background-position;
}

.about-section .container {
  position: relative;
  z-index: 1;
}

.about-highlight {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
}

/* ===== Skills Section ===== */
.skills-section {
  position: relative;
  overflow: hidden;
  background: var(--gradient-skills);
}

.skills-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-animated-3);
  background-size: 400% 400%;
  animation: gradientShift 25s ease infinite;
  opacity: 0.025;
  z-index: 0;
}

.skills-section .container {
  position: relative;
  z-index: 1;
}

.skills-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
  margin-bottom: var(--spacing-xxl);
}

.technical-skills h3,
.creative-capabilities h3 {
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.skill-item {
  margin-bottom: var(--spacing-lg);
}

.skill-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

.skill-bar {
  height: 8px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.skill-progress {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-secondary), var(--accent-tertiary));
  border-radius: var(--radius-full);
  transition: width 1s ease;
}

.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--spacing-md);
}

.capability-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.capability-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-quaternary);
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: 0;
}

.capability-item:hover::before {
  opacity: 0.05;
}

.capability-item > * {
  position: relative;
  z-index: 1;
}

.capability-item:hover {
  transform: translateY(-5px);
}

.capability-item i {
  margin-bottom: var(--spacing-sm);
  color: var(--accent-secondary);
}

@media (max-width: 768px) {
  .skills-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
}

/* ===== GitHub Contributions ===== */
.github-contributions {
  background: var(--bg-secondary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
}

.contribution-graph {
  text-align: center;
}

.contribution-info {
  margin-bottom: var(--spacing-lg);
}

.contribution-calendar img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

/* ===== Projects Section ===== */
.projects-section {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.projects-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-projects);
  z-index: 0;
}

.projects-section::after {
  content: '';
  position: absolute;
  top: -25%;
  right: -25%;
  width: 150%;
  height: 150%;
  background: var(--gradient-animated-1);
  background-size: 400% 400%;
  animation: gradientShift 18s ease infinite reverse;
  opacity: 0.02;
  z-index: 0;
  border-radius: 50%;
}

.projects-section .container {
  position: relative;
  z-index: 1;
}

.project-filters {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xxl);
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border: 2px solid var(--bg-tertiary);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--accent-secondary);
  color: white;
  border-color: var(--accent-secondary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-xl);
}

.project-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 10px 30px var(--shadow-color);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-tertiary);
  opacity: 0;
  transition: opacity var(--transition-normal);
  z-index: 0;
}

.project-card:hover::before {
  opacity: 0.03;
}

.project-card > * {
  position: relative;
  z-index: 1;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: 0 20px 50px var(--shadow-color);
}

.project-card.featured {
  grid-column: span 2;
}

.project-image {
  position: relative;
  height: 250px;
  overflow: hidden;
}

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

.project-card:hover .project-image img {
  transform: scale(1.05);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--overlay-color);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-actions {
  display: flex;
  gap: var(--spacing-md);
}

.project-content {
  padding: var(--spacing-lg);
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-md);
}

.project-header h3 {
  margin-bottom: 0;
}

.status-badge {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.status-badge.featured {
  background: var(--accent-secondary);
  color: white;
}

.status-badge.new {
  background: var(--accent-tertiary);
  color: white;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin: var(--spacing-md) 0;
}

.tag {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
}

.project-stats {
  display: flex;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-md);
  color: var(--text-tertiary);
  font-size: 0.875rem;
}

.stat {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* Coming Soon Project */
.coming-soon .project-image {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
}

.coming-soon-content {
  text-align: center;
  color: var(--text-secondary);
}

.coming-soon-content i {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  color: var(--accent-secondary);
}

@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .project-card.featured {
    grid-column: span 1;
  }
}

/* ===== Contact Section ===== */
.contact-section {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.contact-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-contact);
  z-index: 0;
}

.contact-section::after {
  content: '';
  position: absolute;
  bottom: -50%;
  left: -25%;
  width: 150%;
  height: 150%;
  background: var(--gradient-animated-2);
  background-size: 400% 400%;
  animation: gradientShift 22s ease infinite;
  opacity: 0.025;
  z-index: 0;
  border-radius: 50%;
}

.contact-section .container {
  position: relative;
  z-index: 1;
}

.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xxl);
}

.contact-card,
.form-card {
  background: var(--bg-primary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px var(--shadow-color);
  position: relative;
  overflow: hidden;
}

.contact-card::before,
.form-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-secondary);
  opacity: 0.02;
  z-index: 0;
}

.contact-card > *,
.form-card > * {
  position: relative;
  z-index: 1;
}

.contact-methods {
  margin: var(--spacing-xl) 0;
}

.contact-method {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.method-icon {
  width: 50px;
  height: 50px;
  background: var(--accent-secondary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.method-info h4 {
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.method-info a {
  color: var(--accent-secondary);
  font-weight: 600;
}

.response-time {
  display: block;
  font-size: 0.875rem;
  color: var(--text-tertiary);
  margin-top: var(--spacing-xs);
}

.availability-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  margin-top: var(--spacing-lg);
}

.status-indicator {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
}

.status-indicator.available {
  background: #22c55e;
  animation: pulse 2s infinite;
}

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

/* ===== Contact Form ===== */
.contact-form-inner {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: var(--spacing-md);
  border: 2px solid var(--bg-tertiary);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-family: inherit;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent-secondary);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

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

.form-note {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  text-align: center;
  margin-top: var(--spacing-md);
}

@media (max-width: 768px) {
  .contact-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
}

/* ===== Footer ===== */
.footer {
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: var(--spacing-xxl) 0 var(--spacing-lg);
  position: relative;
  overflow: hidden;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--gradient-quinary);
  opacity: 0.05;
  z-index: 0;
}

.footer-content {
  color: var(--bg-primary);
  position: relative;
  z-index: 1;
}

.footer-top {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-column h4 {
  margin-bottom: var(--spacing-md);
  color: var(--bg-primary);
}

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

.footer-links a {
  color: rgba(246, 245, 243, 0.8);
  transition: color var(--transition-fast);
}

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

.newsletter-form {
  display: flex;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

.newsletter-form input {
  flex: 1;
  padding: var(--spacing-sm) var(--spacing-md);
  border: none;
  border-radius: var(--radius-md);
  background: rgba(246, 245, 243, 0.1);
  color: var(--bg-primary);
}

.newsletter-form input::placeholder {
  color: rgba(246, 245, 243, 0.6);
}

.newsletter-form button {
  background: var(--accent-secondary);
  border: none;
  border-radius: var(--radius-md);
  padding: var(--spacing-sm);
  color: white;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.newsletter-form button:hover {
  background: var(--accent-tertiary);
}

.footer-bottom {
  border-top: 1px solid rgba(246, 245, 243, 0.2);
  padding-top: var(--spacing-lg);
  text-align: center;
}

.copyright {
  color: rgba(246, 245, 243, 0.8);
}

/* ===== Modals ===== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal.active,
.modal.open {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  max-width: 90vw;
  max-height: 90vh;
  overflow: auto;
  position: relative;
}

.close-modal {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: var(--bg-primary);
  border: none;
  border-radius: var(--radius-full);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition-fast);
}

.close-modal:hover {
  background: var(--accent-secondary);
  color: white;
}

/* Live Demo Modal */
.live-demo-modal .modal-content {
  width: 90vw;
  height: 90vh;
  max-width: 1200px;
  max-height: 800px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg);
  border-bottom: 1px solid var(--bg-tertiary);
}

.modal-actions {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
}

.iframe-container {
  position: relative;
  height: calc(100% - 80px);
  padding: 0;
}

.iframe-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.loading-spinner {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
}

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--bg-tertiary);
  border-top: 4px solid var(--accent-secondary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin-bottom: var(--spacing-md);
}

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

/* Iframe error styling */
.iframe-error {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.iframe-error .btn {
  margin-top: 0;
}

/* ===== Responsive Design ===== */
@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .hero-section {
    padding: calc(60px + var(--spacing-lg)) 0 var(--spacing-lg);
  }
  
  section {
    padding: var(--spacing-xl) 0;
  }
  
  .modal-content {
    margin: var(--spacing-md);
    max-width: calc(100vw - 2rem);
    max-height: calc(100vh - 2rem);
  }
  
  /* Reduce gradient animation intensity on mobile for performance */
  .hero-section::before,
  .about-section::after,
  .skills-section::before,
  .projects-section::after,
  .contact-section::after {
    animation-duration: 30s;
    opacity: 0.02;
  }
  
  /* Simplify floating orbs on mobile */
  .hero-section::after,
  .about-section .container::before,
  .skills-section .container::before {
    display: none;
  }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

/* Version Update Notification */
.version-update-notice {
  position: fixed;
  top: 20px;
  right: 20px;
  background: var(--gradient-secondary);
  color: white;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  z-index: var(--z-tooltip);
  transform: translateX(400px);
  transition: transform var(--transition-normal);
  font-weight: 600;
  font-size: 0.9rem;
}

.version-update-notice.show {
  transform: translateX(0);
}

.version-update-notice button {
  background: rgba(255, 255, 255, 0.2);
  border: none;
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-md);
  margin-left: 1rem;
  cursor: pointer;
  font-weight: 600;
  transition: background var(--transition-fast);
}

.version-update-notice button:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* ===== Info Page Styles ===== */
.info-section {
  padding: var(--spacing-xxl) 0;
  min-height: calc(100vh - 80px);
  background: var(--bg-primary);
}

.info-section .container {
  max-width: 800px;
}

.info-section h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xl);
  text-align: center;
  position: relative;
}

.info-section h1::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-secondary), var(--accent-tertiary));
  border-radius: var(--radius-full);
}

.info-content {
  background: var(--bg-secondary);
  padding: var(--spacing-xxl);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px var(--shadow-color);
  margin-top: var(--spacing-xl);
}

.info-content h2 {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--accent-secondary);
  position: relative;
}

.info-content h2:first-child {
  margin-top: 0;
}

.info-content h2::before {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 40px;
  height: 2px;
  background: var(--accent-tertiary);
}

.info-content p {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.info-content ul {
  list-style: none;
  padding: 0;
  margin-bottom: var(--spacing-lg);
}

.info-content li {
  position: relative;
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.info-content li::before {
  content: '▶';
  position: absolute;
  left: 0;
  color: var(--accent-secondary);
  font-size: 0.875rem;
  top: 2px;
}

.info-content a {
  color: var(--accent-secondary);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-fast);
  position: relative;
}

.info-content a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-tertiary);
  transition: width var(--transition-fast);
}

.info-content a:hover {
  color: var(--accent-tertiary);
  transform: translateY(-1px);
}

.info-content a:hover::after {
  width: 100%;
}

/* Info page responsive design */
@media (max-width: 768px) {
  .info-content {
    padding: var(--spacing-xl);
    margin-top: var(--spacing-lg);
  }
  
  .info-content h2 {
    font-size: 1.5rem;
  }
  
  .info-content p,
  .info-content li {
    font-size: 1rem;
  }
  
  .business-card-image {
    max-width: 100% !important;
  }
}

@media (max-width: 480px) {
  .info-content {
    padding: var(--spacing-lg);
  }
  
  .info-section h1 {
    margin-bottom: var(--spacing-lg);
  }
}

/* ===== Business Card Styles ===== */
.business-card-section {
  margin: var(--spacing-xl) 0;
  text-align: center;
}

.business-card-container {
  background: var(--bg-primary);
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: 0 10px 30px var(--shadow-color);
  margin-top: var(--spacing-lg);
  transition: transform var(--transition-normal);
}

.business-card-container:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px var(--shadow-color);
}

.business-card-image {
  max-width: 500px;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
  transition: transform var(--transition-normal);
  cursor: pointer;
}

.business-card-image:hover {
  transform: scale(1.02);
}

.business-card-caption {
  margin-top: var(--spacing-md);
  font-style: italic;
  color: var(--text-tertiary);
  font-size: 0.95rem;
}

/* Business card modal for full-size view */
.business-card-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.business-card-modal.open {
  opacity: 1;
  visibility: visible;
}

.business-card-modal img {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: var(--radius-md);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.business-card-modal .close-modal {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.9);
  border: none;
  border-radius: var(--radius-full);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1.5rem;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.business-card-modal .close-modal:hover {
  background: white;
  transform: scale(1.1);
}

/* ===== Utility Classes ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.hidden { display: none; }
.visible { display: block; }

/* ===== Print Styles ===== */
@media print {
  .header,
  .theme-toggle,
  .mobile-menu-toggle,
  .modal {
    display: none;
  }
  
  body {
    background: white;
    color: black;
  }
  
  .hero-section {
    padding-top: var(--spacing-lg);
  }
}