@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600;700&display=swap');

:root {
  --bg-color: #f7f9fb;
  --text-color: #21243d;
  --accent-color: #004aad;
  --muted-color: #5a6271;
  --section-bg: #fff;
  --card-shadow: 0 2px 12px 0 rgba(30,34,90,0.07);
  --border-radius: 14px;
  --heading-border: 4px solid var(--accent-color);
  --link-bg: #e6f0ff;
  --highlight: #f2f6fd;
}

body.dark {
  --bg-color: #18192a;
  --text-color: #e0e3f5;
  --accent-color: #70a1ff;
  --muted-color: #b3bad9;
  --section-bg: #23243a;
  --card-shadow: 0 2px 16px 0 rgba(0,0,0,0.16);
  --link-bg: #232e4c;
  --highlight: #23243a;
}

body {
  background: var(--bg-color);
  color: var(--text-color);
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.7;
  font-size: 1.06rem;
  transition: background 0.3s, color 0.3s;
}

.container {
  max-width: 830px;
  margin: 36px auto 36px auto;
  padding: 36px 32px 40px 32px;
  background: var(--section-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--card-shadow);
  border: 1px solid #e6eaf3;
}

h1 {
  font-size: 2.6rem;
  color: var(--accent-color);
  margin-bottom: 0.4rem;
  font-weight: 700;
  letter-spacing: -1px;
}

.contact {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  font-size: 1.07rem;
  color: var(--muted-color);
  margin-bottom: 2.5rem;
  background: var(--highlight);
  border-radius: 8px;
  padding: 0.7rem 1.1rem;
  border-left: 4px solid var(--accent-color);
}

.contact a {
  margin-right: 1.1rem;
  color: var(--accent-color);
  font-weight: 600;
  padding: 0.2em 0.3em;
  border-radius: 5px;
  background: var(--link-bg);
  transition: background 0.18s;
}

.contact a:hover {
  background: var(--accent-color);
  color: #fff;
  text-decoration: none;
}

.section {
  margin-top: 2.1rem;
  margin-bottom: 1.5rem;
  padding: 1.8rem 1.5rem 1.5rem 1.5rem;
  background: var(--section-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--card-shadow);
  border-left: 6px solid var(--accent-color);
}

h2 {
  font-size: 1.35rem;
  color: var(--accent-color);
  margin-top: 0;
  margin-bottom: 1rem;
  padding-bottom: 0.3rem;
  font-weight: 700;
  border-left: 6px solid var(--accent-color);
  padding-left: 0.7rem;
  background: none;
  border-bottom: none;
  letter-spacing: -0.5px;
}

h3 {
  font-size: 1.07rem;
  margin-top: 1.3rem;
  font-weight: 600;
  color: var(--text-color);
}

h4 {
  font-size: 1rem;
  font-style: italic;
  color: var(--muted-color);
  margin: 0.2rem 0 0.2rem 0;
}

ul {
  margin: 0.5rem 0 1.2rem 1.6rem;
  padding-left: 0;
}

li {
  margin-bottom: 0.3rem;
  line-height: 1.6;
}

a {
  color: var(--accent-color);
  text-decoration: underline;
  font-weight: 500;
  border-radius: 3px;
  transition: background 0.18s;
}

a:hover {
  background: var(--link-bg);
  color: var(--accent-color);
  text-decoration: none;
}

p {
  margin: 0.6rem 0;
}

.bold {
  font-weight: 700;
}

::-webkit-scrollbar {
  width: 10px;
  background: var(--section-bg);
}
::-webkit-scrollbar-thumb {
  background: #e0e6f1;
  border-radius: 5px;
}

@media screen and (max-width: 850px) {
  .container {
    padding: 18px 2vw 20px 2vw;
  }
  h1 {
    font-size: 2.1rem;
  }
  h2 {
    font-size: 1.13rem;
  }
  .section {
    padding: 1.2rem 0.7rem 1.1rem 0.7rem;
  }
}

@media screen and (max-width: 540px) {
  .container {
    max-width: 98vw;
    padding: 0.5rem 1vw;
  }
  h1 {
    font-size: 1.2rem;
  }
  .section {
    margin: 1rem 0;
    padding: 1rem 0.3rem 0.8rem 0.5rem;
  }
  .contact {
    flex-direction: column;
    gap: 0.4rem;
    font-size: 0.98rem;
    padding: 0.6rem 0.5rem;
  }
}

@media (max-width: 430px) {
  h1 {
    font-size: 1.05rem;
  }
}

/* Optional: Button style for dark/light mode toggle if you add it */
.theme-toggle {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 1rem;
}
.theme-toggle button {
  background: var(--highlight);
  color: var(--accent-color);
  border: none;
  border-radius: 20px;
  padding: 0.4em 1.1em;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 1px 6px 0 rgba(0,0,0,0.05);
  transition: background 0.22s, color 0.22s;
}
.theme-toggle button:hover {
  background: var(--accent-color);
  color: #fff;
}