:root {
  --gradient-start: #1e293b;
  --gradient-end: #0f766e;
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-border: rgba(255, 255, 255, 0.1);
  --text-primary: rgba(255, 255, 255, 0.95);
  --text-secondary: rgba(255, 255, 255, 0.8);
  --accent: #14b8a6;
}

html, body {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background: var(--gradient-start);
  height: 100%;
}

body {
  margin: -30px;
  padding: calc(30px + env(safe-area-inset-top)) calc(30px + env(safe-area-inset-right)) calc(30px + env(safe-area-inset-bottom)) calc(30px + env(safe-area-inset-left));
  width: calc(100vw + 60px);
  min-height: calc(100vh + 60px);
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  align-items: center;
  display: flex;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  justify-content: center;
  position: relative;
  color: white;
  box-sizing: border-box;
}

nav {
  position: fixed;
  right: 2rem;
  top: 2rem;
  z-index: 100;
}

nav ul {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

nav a {
  color: var(--text-secondary);
  font-size: 1rem;
  font-weight: 400;
  text-decoration: none;
  transition: all 0.3s ease;
}

nav a:hover {
  color: var(--text-primary);
}

nav a.active {
  color: var(--accent);
}

.card {
  backdrop-filter: blur(15px);
  background: linear-gradient(135deg, var(--glass-bg) 0%, rgba(255,255,255,0.05) 100%);
  border: 1px solid var(--glass-border);
  border-radius: clamp(1rem, 3vw, 2rem);
  box-shadow: 0 15px 40px rgba(0,0,0,0.12), 0 0 0 1px var(--glass-border) inset;
  margin: 
    max(clamp(1rem, 3vw, 2rem), env(safe-area-inset-top))
    max(clamp(1rem, 3vw, 2rem), env(safe-area-inset-right))
    max(clamp(1rem, 3vw, 2rem), env(safe-area-inset-bottom))
    max(clamp(1rem, 3vw, 2rem), env(safe-area-inset-left));
  max-height: 80vh;
  opacity: 0.6;
  text-align: center;
  transform-style: preserve-3d;
  transition: all 0.1s ease-out;
}

.card.contact,
.card.portfolio {
  max-height: calc(100vh - 12rem);
  margin-top: 6rem;
  margin-bottom: 3rem;
  padding: clamp(2rem, 8vw, 4rem) clamp(2rem, 8vw, 6rem);
}

.card.contact {
  overflow-y: hidden;
  width: clamp(320px, 70vw, 600px);
}

.card.home {
  padding: clamp(2rem, 8vw, 6rem) clamp(2rem, 10vw, 8rem);
  width: clamp(280px, 60vw, 500px);
}

.card.portfolio {
  overflow-y: auto;
  width: clamp(320px, 80vw, 700px);
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.card.portfolio::-webkit-scrollbar {
  display: none;
}

.card h1 {
  color: var(--text-primary);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 1.5rem 0;
}

.card.contact h1 {
  margin: 0 0 1rem 0;
}

.card.home h1 {
  cursor: default;
  font-size: clamp(1.8rem, 6vw, 4rem);
  margin: 0;
  transition: all 0.3s ease;
  white-space: nowrap;
}

.card.home h1:hover {
  text-shadow: 0 10px 30px rgba(0,0,0,0.3);
  transform: translateZ(25px);
}

.card p {
  color: var(--text-secondary);
  font-size: clamp(0.9rem, 2.5vw, 1.1rem);
  line-height: 1.6;
  margin: 0 0 1rem 0;
}

.card.contact p {
  font-size: clamp(0.9rem, 2.5vw, 1rem);
  margin: 0 0 2rem 0;
}

.card.portfolio p {
  font-size: clamp(0.9rem, 2.5vw, 1rem);
  margin: 0 0 1.5rem 0;
}

.card a {
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.3s ease;
}

.card a:hover {
  text-shadow: 0 10px 30px rgba(0,0,0,0.3);
  transform: translateZ(25px);
}

.collapse-arrow {
  color: var(--accent);
  font-size: 1.2rem;
  transition: transform 0.3s ease;
}

.collapse-arrow.expanded {
  transform: rotate(180deg);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  text-align: left;
}

.contact-info {
  border-top: 1px solid var(--glass-border);
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  margin-top: 2rem;
  padding-top: 2rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.95rem;
  font-weight: 500;
}

.form-group input,
.form-group textarea {
  background: var(--glass-bg);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 0.5rem;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.75rem;
  transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--accent);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

.form-group textarea {
  min-height: 100px;
  resize: vertical;
}

.project-header {
  align-items: center;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  border-radius: 0.75rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding: 1rem;
  transition: all 0.3s ease;
}

.project-header:hover {
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}

.project-section {
  margin-top: 2rem;
  text-align: left;
}

.project-table {
  background: rgba(255, 255, 255, 0.05);
  border-collapse: collapse;
  border-radius: 0.75rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  margin-top: 1rem;
  overflow: hidden;
  width: 100%;
}

.project-table th,
.project-table td {
  border-bottom: 1px solid var(--glass-border);
  padding: 1rem 1.25rem;
  text-align: left;
}

.project-table th {
  background: rgba(20, 184, 166, 0.2);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.025em;
}

.project-table td {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9rem;
  line-height: 1.5;
}

.project-table tr:hover {
  background: rgba(255, 255, 255, 0.03);
}

.project-table tr:last-child td {
  border-bottom: none;
}

.project-title {
  color: var(--text-primary);
  font-size: clamp(1.3rem, 4vw, 1.8rem);
  font-weight: 600;
  margin: 0;
  text-align: left;
}

.status-badge {
  background: rgba(34, 197, 94, 0.2);
  border: 1px solid rgba(34, 197, 94, 0.3);
  border-radius: 1rem;
  color: #22c55e;
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.3rem 0.8rem;
}

.submit-btn {
  background: rgba(20, 184, 166, 0.8);
  border: none;
  border-radius: 0.5rem;
  color: white;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  margin-top: 1rem;
  padding: 0.75rem 2rem;
  transition: all 0.3s ease;
}

.submit-btn:hover {
  background: var(--accent);
  transform: translateY(-2px);
}

.table-container {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.5s ease-in-out, opacity 0.3s ease;
}

.table-container.expanded {
  max-height: 1000px;
  opacity: 1;
}

.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tag {
  background: rgba(14, 165, 233, 0.2);
  border: 1px solid rgba(14, 165, 233, 0.3);
  border-radius: 0.5rem;
  color: #0ea5e9;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.6rem;
}

.toggle-hint {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
  font-style: italic;
  margin-top: 0.5rem;
}

@media (max-width: 768px) {
  .card {
    box-shadow: 0 8px 25px rgba(0,0,0,0.1), 0 0 0 1px var(--glass-border) inset;
  }
  
  .card.contact,
  .card.portfolio {
    margin-top: 5rem;
    margin-bottom: 2rem;
    padding: clamp(1.5rem, 6vw, 3rem) clamp(1.5rem, 8vw, 4rem);
  }
  
  .card.contact {
    max-height: calc(100vh - 8rem);
  }
  
  .card.portfolio {
    max-height: calc(100vh - 10rem);
  }
  
  .contact-form {
    gap: 1.2rem;
  }
  
  .contact-info {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
  }
  
  .submit-btn {
    margin-top: 0.5rem;
  }
  
  nav {
    right: 1.5rem;
    top: 1.5rem;
  }
  
  .collapse-arrow {
    font-size: 1rem;
  }
  
  .project-header {
    padding: 0.8rem;
  }
  
  .project-table th,
  .project-table td {
    font-size: 0.85rem;
    padding: 0.75rem 0.8rem;
  }
  
  .project-title {
    font-size: 1.2rem;
  }
  
  .tech-list {
    flex-direction: column;
    gap: 0.3rem;
  }
}