/* css/portfolio.css */
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard/dist/web/static/pretendard.css');

:root {
  --bg-color: #f4f4f4;
  --text-main: #000;
  --text-muted: #555;
  --border-color: #000;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 1rem;
}

.container {
  width: 100%;
  max-width: 500px;
  animation: fadeIn 0.8s ease-out forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.card {
  background: #fff;
  border: 2px solid var(--border-color);
  padding: 3rem 2.5rem;
  position: relative;
  /* Solid modern shadow */
  box-shadow: 8px 8px 0px 0px rgba(0,0,0,1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translate(-3px, -3px);
  box-shadow: 11px 11px 0px 0px rgba(0,0,0,1);
}

.date-header {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-align: right;
  margin-bottom: 2rem;
  border-bottom: 1px solid #ddd;
  padding-bottom: 0.5rem;
  letter-spacing: 0.5px;
}

.profile-img {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  border: 2px solid var(--border-color);
  margin: 0 0 1.5rem 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  background-color: #fff;
}

.title {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 0.8rem;
  letter-spacing: -0.5px;
  color: var(--text-main);
}

.subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.6;
  font-weight: 400;
  white-space: pre-line;
}

.btn-group {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.8rem 1.8rem;
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  background-color: #000;
  text-decoration: none;
  border: 2px solid #000;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn:hover {
  background-color: #fff;
  color: #000;
}

.btn svg {
  width: 20px;
  height: 20px;
}

@media (max-width: 480px) {
  .card {
    padding: 2rem 1.5rem;
  }
  .title {
    font-size: 1.8rem;
  }
  .btn {
    width: 100%;
  }
}