/* Modern Minimalist Style - Inspired by SAP Design */
/* ================================================= */

/* Root Variables */
:root {
  /* Color Palette */
  --color-primary: #bf4342;      /* Coral Red - Main accent */
  --color-dark: #2c2c2c;         /* Charcoal - Text */
  --color-light: #fafafa;        /* Off-white - Background */
  --color-gray: #6c757d;         /* Gray - Secondary text */
  --color-gray-light: #e9ecef;   /* Light gray - Borders */
  --color-white: #ffffff;        /* Pure white */
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Syne', 'Inter', sans-serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 3rem;
  --spacing-xl: 5rem;
  --spacing-xxl: 8rem;
  
  /* Transitions */
  --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-dark);
  background-color: var(--color-light);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-dark);
  opacity: 0.9;
}

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

a:hover {
  opacity: 0.8;
}

/* Header */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(250, 250, 250, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  transition: var(--transition-base);
}

.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

.logo-text {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-dark);
  letter-spacing: -0.02em;
}

/* Language Switcher */
.language-switcher {
  display: flex;
  gap: 0.5rem;
  padding: 0.25rem;
  background: var(--color-gray-light);
  border-radius: 20px;
}

.lang-btn {
  background: transparent;
  border: none;
  padding: 0.4rem 0.8rem;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-gray);
  cursor: pointer;
  border-radius: 16px;
  transition: var(--transition-base);
}

.lang-btn:hover {
  color: var(--color-dark);
  background: rgba(255, 255, 255, 0.5);
}

.lang-btn.active {
  background: var(--color-white);
  color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* Social Icons in Header */
.social-icons {
  display: flex;
  gap: 1.2rem;
}

.social-link {
  color: var(--color-dark);
  font-size: 1.1rem;
  opacity: 0.6;
  transition: var(--transition-base);
}

.social-link:hover {
  color: var(--color-primary);
  opacity: 1;
  transform: translateY(-2px);
}

/* Menu Toggle Button */
.menu-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 24px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-dark);
  transition: var(--transition-base);
}

.menu-toggle:hover span {
  background-color: var(--color-primary);
}

.menu-toggle.active span:first-child {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:last-child {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Fullscreen Menu */
.fullscreen-menu {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: var(--color-white);
  z-index: 9999;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-slow);
}

.fullscreen-menu.active {
  opacity: 1;
  visibility: visible;
}

.menu-content {
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-lg);
}

.menu-close {
  position: absolute;
  top: 2rem;
  right: 2rem;
  background: none;
  border: none;
  font-size: 2rem;
  color: var(--color-dark);
  cursor: pointer;
  transition: var(--transition-base);
}

.menu-close:hover {
  color: var(--color-primary);
  transform: rotate(90deg);
}

.menu-nav ul {
  list-style: none;
  text-align: center;
}

.menu-nav li {
  margin: 2rem 0;
}

.menu-link {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-dark);
  position: relative;
  transition: var(--transition-base);
}

.menu-link::after {
  content: attr(data-text);
  position: absolute;
  left: 0;
  top: 0;
  color: var(--color-primary);
  width: 0;
  overflow: hidden;
  transition: var(--transition-base);
}

.menu-link:hover {
  color: var(--color-dark);
}

.menu-link:hover::after {
  width: 100%;
}

.menu-footer {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
}

.menu-social {
  display: flex;
  gap: 2rem;
}

.menu-social a {
  color: var(--color-dark);
  font-size: 1.5rem;
  opacity: 0.6;
  transition: var(--transition-base);
}

.menu-social a:hover {
  color: var(--color-primary);
  opacity: 1;
}

/* Hero Section */
.hero-section {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: var(--spacing-xxl) 0;
  position: relative;
}

.hero-content {
  width: 100%;
  position: relative;
}

/* Hero Image */
.hero-image {
  position: relative;
  margin-top: var(--spacing-lg);
}

.profile-img {
  width: 100%;
  max-width: 400px;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
  transition: var(--transition-base);
}

.profile-img:hover {
  transform: translateY(-5px);
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.2);
}

.image-decoration {
  position: absolute;
  top: -20px;
  right: -20px;
  width: 100px;
  height: 100px;
  background: var(--color-primary);
  opacity: 0.1;
  border-radius: 50%;
  z-index: -1;
}

.image-decoration::after {
  content: '';
  position: absolute;
  top: 40px;
  left: 40px;
  width: 80px;
  height: 80px;
  background: var(--color-primary);
  opacity: 0.5;
  border-radius: 50%;
}

.hero-greeting {
  font-size: 1.1rem;
  color: var(--color-gray);
  margin-bottom: var(--spacing-md);
  font-weight: 400;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(3rem, 10vw, 8rem);
  font-weight: 800;
  line-height: 0.9;
  letter-spacing: -0.03em;
  margin-bottom: var(--spacing-lg);
}

.name-first {
  display: block;
  color: var(--color-dark);
}

.name-last {
  display: block;
  color: var(--color-primary);
  margin-left: 15%;
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--color-gray);
  margin-bottom: var(--spacing-sm);
}

.hero-nickname {
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 4rem);
  font-weight: 700;
  color: var(--color-dark);
  opacity: 0.2;
  margin-bottom: var(--spacing-lg);
}

.hero-roles {
  font-size: 1.2rem;
  line-height: 1.8;
  color: var(--color-dark);
}

.hero-roles .highlight {
  color: var(--color-primary);
  font-weight: 600;
}

/* Scroll Indicator */
.hero-scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
}

.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-gray);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: var(--transition-base);
}

.scroll-indicator:hover {
  color: var(--color-primary);
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-gray), transparent);
  position: relative;
  overflow: hidden;
}

.scroll-line::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-primary);
  animation: scrollDown 2s infinite;
}

@keyframes scrollDown {
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(200%);
  }
}

/* About Section */
.about-section {
  padding: var(--spacing-xxl) 0;
  background: var(--color-white);
}

.about-content {
  max-width: 900px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--color-dark);
}

.about-text {
  margin-bottom: var(--spacing-lg);
}

.about-text .lead {
  font-size: 1.25rem;
  line-height: 1.8;
  color: var(--color-dark);
  margin-bottom: var(--spacing-md);
}

.about-illustration {
  margin: var(--spacing-lg) 0;
  text-align: center;
}

.illustration-placeholder {
  max-width: 400px;
  margin: 0 auto;
}

.about-mission {
  margin-top: var(--spacing-lg);
}

.about-mission h4 {
  font-family: var(--font-display);
  font-size: 1.75rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

/* Projects Section */
.projects-section {
  padding: var(--spacing-xxl) 0;
  background: var(--color-light);
}

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

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-gray);
  margin-top: var(--spacing-sm);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.project-card {
  background: var(--color-white);
  padding: var(--spacing-lg);
  border-radius: 0;
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--color-primary);
  transform: translateX(-100%);
  transition: var(--transition-base);
}

.project-card:hover::before {
  transform: translateX(0);
}

.project-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.project-link {
  color: inherit;
  display: block;
}

.project-link:hover {
  color: inherit;
  opacity: 1;
}

.project-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-primary);
  opacity: 0.2;
  line-height: 1;
  margin-bottom: var(--spacing-md);
}

.project-title {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  color: var(--color-dark);
}

.project-category {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray);
  margin-bottom: var(--spacing-sm);
}

.project-description {
  color: var(--color-dark);
  opacity: 0.8;
  line-height: 1.6;
  margin-bottom: var(--spacing-md);
}

.project-arrow {
  font-size: 1.5rem;
  color: var(--color-primary);
  display: inline-block;
  transition: var(--transition-base);
}

.project-card:hover .project-arrow {
  transform: translateX(5px);
}

/* Stats Section */
.stats-section {
  padding: var(--spacing-xl) 0;
  background: var(--color-white);
  border-top: 1px solid var(--color-gray-light);
  border-bottom: 1px solid var(--color-gray-light);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  text-align: center;
}

.stat-item {
  position: relative;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.stat-suffix {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
}

.stat-label {
  display: block;
  margin-top: var(--spacing-sm);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray);
}

/* Contact Section */
.contact-section {
  padding: var(--spacing-xxl) 0;
  background: var(--color-light);
}

.contact-content {
  max-width: 900px;
  margin: 0 auto;
  text-align: center;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  margin-top: var(--spacing-xl);
  text-align: left;
}

.contact-info h4 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-dark);
}

.contact-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.contact-item i {
  color: var(--color-primary);
  width: 20px;
}

.contact-item a {
  color: var(--color-dark);
}

.contact-item a:hover {
  color: var(--color-primary);
}

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

.contact-social a {
  font-size: 1.5rem;
  color: var(--color-dark);
  opacity: 0.6;
  transition: var(--transition-base);
}

.contact-social a:hover {
  color: var(--color-primary);
  opacity: 1;
  transform: translateY(-3px);
}

/* Contact Form */
.contact-form .form-group {
  margin-bottom: var(--spacing-md);
}

.contact-form .form-control {
  width: 100%;
  padding: var(--spacing-sm) 0;
  border: none;
  border-bottom: 2px solid var(--color-gray-light);
  background: transparent;
  font-family: var(--font-primary);
  font-size: 1rem;
  color: var(--color-dark);
  transition: var(--transition-base);
}

.contact-form .form-control:focus {
  outline: none;
  border-bottom-color: var(--color-primary);
}

.contact-form .form-control::placeholder {
  color: var(--color-gray);
  opacity: 0.7;
}

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

.btn-submit {
  background: var(--color-dark);
  color: var(--color-white);
  border: 2px solid var(--color-dark);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: var(--transition-base);
}

.btn-submit:hover {
  background: transparent;
  color: var(--color-dark);
}

/* Footer */
.site-footer {
  padding: var(--spacing-lg) 0;
  background: var(--color-white);
  border-top: 1px solid var(--color-gray-light);
}

.footer-content {
  text-align: center;
}

.footer-content p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-gray);
  font-size: 0.875rem;
}

.footer-links a {
  color: var(--color-dark);
  margin: 0 var(--spacing-sm);
}

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

.separator {
  color: var(--color-gray-light);
  margin: 0 var(--spacing-xs);
}

/* Responsive Design */
@media (max-width: 768px) {
  /* Spacing adjustments */
  :root {
    --spacing-xxl: 4rem;
    --spacing-xl: 3rem;
    --spacing-lg: 2rem;
  }
  
  /* Language Switcher */
  .language-switcher {
    margin-right: 0.5rem;
  }
  
  .lang-btn {
    padding: 0.3rem 0.6rem;
    font-size: 0.75rem;
  }
  
  /* Menu */
  .menu-link {
    font-size: 2rem;
  }
  
  /* Hero */
  .hero-name {
    font-size: clamp(2.5rem, 12vw, 5rem);
  }
  
  .name-last {
    margin-left: 10%;
  }
  
  /* Hero Image */
  .hero-image {
    margin-top: var(--spacing-md);
    text-align: center;
  }
  
  .profile-img {
    max-width: 300px;
  }
  
  /* Projects Grid */
  .projects-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  /* Contact Grid */
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  /* Stats Grid */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  /* Hero adjustments */
  .hero-name {
    font-size: clamp(2rem, 15vw, 4rem);
  }
  
  .hero-nickname {
    font-size: clamp(1.5rem, 8vw, 3rem);
  }
  
  /* Menu */
  .menu-link {
    font-size: 1.5rem;
  }
  
  /* Stats */
  .stat-number {
    font-size: 2rem;
  }
  
  .stat-suffix {
    font-size: 1.5rem;
  }
}

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

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

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

.text-primary {
  color: var(--color-primary);
}

.text-muted {
  color: var(--color-gray);
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.pt-1 { padding-top: var(--spacing-xs); }
.pt-2 { padding-top: var(--spacing-sm); }
.pt-3 { padding-top: var(--spacing-md); }
.pt-4 { padding-top: var(--spacing-lg); }
.pt-5 { padding-top: var(--spacing-xl); }

.pb-1 { padding-bottom: var(--spacing-xs); }
.pb-2 { padding-bottom: var(--spacing-sm); }
.pb-3 { padding-bottom: var(--spacing-md); }
.pb-4 { padding-bottom: var(--spacing-lg); }
.pb-5 { padding-bottom: var(--spacing-xl); }