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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
  background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.3s ease, color 0.3s ease;
}

/* Settings buttons */
.settings-buttons {
  position: fixed;
  top: 20px;
  right: 20px;
  display: flex;
  gap: 10px;
  z-index: 999;
}

.settings-btn {
  background: white;
  border: none;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: all 0.3s ease;
}

.settings-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

#lang-text {
  font-weight: 600;
  font-size: 0.9rem;
  color: #667eea;
}

/* Dark mode styles */
body.dark-mode {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
  color: #e0e0e0;
}

body.dark-mode .settings-btn {
  background: #2d3748;
  color: #e0e0e0;
}

body.dark-mode .nav-btn {
  background: #2d3748;
  color: #e0e0e0;
}

body.dark-mode .nav-btn-title {
  color: #e0e0e0;
}

body.dark-mode .modal-content {
  background: #2d3748;
  color: #e0e0e0;
}

body.dark-mode .modal-title {
  color: #e0e0e0;
}

body.dark-mode .modal-body {
  color: #cbd5e0;
}

body.dark-mode .modal-body h3 {
  color: #e0e0e0;
}

body.dark-mode .modal-close {
  background: #1a202c;
  color: #cbd5e0;
}

body.dark-mode .modal-close:hover {
  background: #4a5568;
}

body.dark-mode .project-card {
  background: #1a202c;
  border-left-color: #667eea;
}

body.dark-mode .project-card h4 {
  color: #e0e0e0;
}

body.dark-mode .project-card p {
  color: #a0aec0;
}

body.dark-mode .contact-item {
  background: #1a202c;
}

body.dark-mode .shape {
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.15),
    rgba(168, 85, 247, 0.15)
  );
}

/* Animated background shapes */
.bg-shapes {
  position: fixed;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: 0;
}

.shape {
  position: absolute;
  background: linear-gradient(
    135deg,
    rgba(99, 102, 241, 0.1),
    rgba(168, 85, 247, 0.1)
  );
  border-radius: 50%;
  animation: float 20s infinite ease-in-out;
}

.shape:nth-child(1) {
  width: 300px;
  height: 300px;
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.shape:nth-child(2) {
  width: 200px;
  height: 200px;
  top: 60%;
  right: 15%;
  animation-delay: 5s;
}

.shape:nth-child(3) {
  width: 250px;
  height: 250px;
  bottom: 10%;
  left: 50%;
  animation-delay: 10s;
}

@keyframes float {
  0%,
  100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(30px, -30px) scale(1.1);
  }
  66% {
    transform: translate(-20px, 20px) scale(0.9);
  }
}

/* Main container */
.container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 60px 20px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* Hero section */
.hero {
  text-align: center;
  margin-bottom: 60px;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 700;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 15px;
  animation: fadeInUp 0.8s ease-out;
}

.hero p {
  font-size: 1.5rem;
  color: #64748b;
  margin-bottom: 30px;
  animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero .tagline {
  font-size: 1rem;
  color: #94a3b8;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
  animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

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

/* Navigation buttons */
.nav-buttons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 20px;
  max-width: 800px;
  width: 100%;
  animation: fadeInUp 0.8s ease-out 0.6s backwards;
}

.nav-btn {
  background: white;
  border: none;
  padding: 25px 20px;
  border-radius: 16px;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  text-align: center;
}

.nav-btn:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}

.nav-btn-icon {
  font-size: 2rem;
  margin-bottom: 10px;
}

.nav-btn-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: #334155;
}

/* Modal styles */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1000;
  animation: fadeIn 0.3s ease-out;
}

.modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.modal-content {
  background: white;
  border-radius: 24px;
  padding: 40px;
  max-width: 700px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.2);
  animation: slideUp 0.4s ease-out;
}

.modal-content.closing {
  animation: slideDown 0.6s ease-in forwards;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(50px);
  }
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: #f1f5f9;
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.5rem;
  color: #64748b;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-close:hover {
  background: #e2e8f0;
  transform: rotate(90deg);
}

.modal-title {
  font-size: 2rem;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.modal-body {
  color: #475569;
  line-height: 1.8;
}

.modal-body h3 {
  color: #334155;
  margin-top: 25px;
  margin-bottom: 12px;
  font-size: 1.3rem;
}

.modal-body p {
  margin-bottom: 15px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 20px 0;
}

.skill-tag {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
}

.project-card {
  background: #f8fafc;
  padding: 20px;
  border-radius: 12px;
  margin-bottom: 15px;
  border-left: 4px solid #667eea;
}

.project-card h4 {
  color: #1e293b;
  margin-bottom: 8px;
}

.project-card p {
  color: #64748b;
  font-size: 0.95rem;
  margin-bottom: 10px;
}

.project-link {
  color: #667eea;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

.project-link:hover {
  color: #764ba2;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-top: 20px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px;
  background: #f8fafc;
  border-radius: 12px;
}

.contact-item a {
  color: #667eea;
  text-decoration: none;
  font-weight: 500;
}

/* Responsive */
@media (max-width: 768px) {
  .settings-buttons {
    top: 15px;
    right: 15px;
    gap: 8px;
  }

  .settings-btn {
    width: 45px;
    height: 45px;
    font-size: 1.1rem;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .hero p {
    font-size: 1.2rem;
  }

  .nav-buttons {
    grid-template-columns: repeat(2, 1fr);
  }

  .modal-content {
    padding: 30px 20px;
  }
}