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

:root {
  --bg-color: #f9fafb;
  --card-bg: #ffffff;
  --text-color: #333;
  --accent-color: #000;
  --border-radius: 1rem;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  --padding: 1rem;
  --transition: 0.3s ease-in-out;
}

body {
  font-family: "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: auto;
  padding: 1.5rem;
}

/* Profile card */
.profile-card {
  background: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: var(--padding);
  transition: transform var(--transition), box-shadow var(--transition);
}

.profile-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.12);
}

/* Header section */
.profile-header {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  width: 100%;
}

.profile-avatar img {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: var(--shadow);
  margin-bottom: 1rem;
}

.profile-info {
  width: 100%;
}

.profile-info h2 {
  font-size: 1.5rem;
  margin: 0.5rem 0;
}

.profile-info p {
  margin: 0.25rem 0;
}

/* Time box */
.time-box {
  background-color: #eef2f5;
  border: 2px solid var(--accent-color);
  border-radius: var(--border-radius);
  padding: 1rem;
  margin: 1rem auto;
  text-align: center;
  box-shadow: var(--shadow);
  display: block;
  width: 70%;
  max-width: 400px;
}

.time-box h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
  color: var(--accent-color);
}

.time-box span {
  display: block;
  font-weight: bold;
  font-size: 1.1rem;
  color: var(--text-color);
  letter-spacing: 0.5px;
}

/* Social links */
.social-links {
  text-align: center;
}

.social-links h3 {
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
  color: var(--accent-color);
}

.social-links ul {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.social-links a {
  color: var(--accent-color);
  font-size: 1.5rem;
  transition: transform var(--transition), color var(--transition);
}

.social-links a:hover,
.social-links a:focus {
  color: #0056a3;
  transform: scale(1.1);
}

/* Section styles */
section {
  background-color: #f4f6f8;
  border-radius: var(--border-radius);
  padding: var(--padding);
}

section h3 {
  margin-bottom: 0.5rem;
}

section ul {
  list-style-type: disc;
  padding-left: 1.5rem;
  margin: 0;
}

/* Large screens */
@media (min-width: 600px) {
  body {
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 3rem 0;
  }

  .profile-card {
    width: 85%;
    max-width: 950px;
    margin: 0 auto;
  }

  .profile-header {
    flex-direction: row;
    align-items: center;
    justify-content: center;
    text-align: left;
    gap: 2rem;
  }

  .profile-avatar {
    flex-shrink: 0;
  }

  .profile-info {
    flex: 1;
  }

  .time-box {
    align-self: center;
    margin: 0;
    flex-shrink: 0;
  }

  .social-links ul {
    justify-content: center;
  }
}

/* Extra large screens */
@media (min-width: 1200px) {
  .profile-card {
    max-width: 1000px;
  }

  body {
    padding: 4rem 0;
  }
}