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

:root {
  --color-bg: #fafafa;
  --color-surface: #f3eefe;
  --color-border: #ddd4f4;
  --color-text: #1a1a2e;
  --color-muted: #6b6580;
  --color-accent: #7c3aed;
  --color-accent-hover: #5b21b6;
  --font-sans: system-ui, -apple-system, sans-serif;
  --font-mono: "SF Mono", "Fira Code", monospace;
  --max-width: 720px;
}

html { font-size: 16px; }

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Nav */
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 2rem;
  background: #fff;
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 1px 3px rgba(124,58,237,0.06);
}
.nav__logo {
  height: 36px;
  display: block;
}
.nav__links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}
.nav__links a {
  color: var(--color-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.15s;
}
.nav__links a:hover { color: var(--color-accent); }

/* Main */
.main {
  flex: 1;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 2rem;
}

/* Footer */
.footer {
  border-top: 1px solid var(--color-border);
  background: #fff;
  padding: 1.5rem 2rem;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.85rem;
}
.footer a { color: var(--color-muted); }
.footer a:hover { color: var(--color-accent); }
.footer p + p { margin-top: 0.25rem; }

/* Typography */
h1 { font-size: 2.2rem; line-height: 1.15; letter-spacing: -0.03em; margin-bottom: 1rem; }
h2 { font-size: 1.4rem; letter-spacing: -0.02em; margin: 2rem 0 0.75rem; }
h3 { font-size: 1.1rem; margin-bottom: 0.5rem; }
p  { margin-bottom: 1rem; }
a  { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { margin-bottom: 1rem; padding-left: 1.5rem; }
li { margin-bottom: 0.25rem; }
code { font-family: var(--font-mono); font-size: 0.875em; background: var(--color-surface); padding: 0.1em 0.3em; border-radius: 3px; border: 1px solid var(--color-border); }
pre { background: #1a1a2e; color: #e8e8e8; padding: 1rem; border-radius: 6px; overflow-x: auto; margin-bottom: 1rem; }
pre code { background: none; border: none; padding: 0; color: inherit; }

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.6rem 1.2rem;
  background: var(--color-accent);
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: 4px;
  margin-right: 0.5rem;
  margin-bottom: 0.5rem;
  text-decoration: none;
  transition: background 0.15s;
}
.btn:hover { background: var(--color-accent-hover); text-decoration: none; }
.btn--ghost {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}
.btn--ghost:hover { background: var(--color-surface); }

/* Hero */
.hero { padding: 2rem 0 3rem; }
.hero__logo { height: 72px; margin-bottom: 1.5rem; display: block; }
.hero h1 { font-size: 2.8rem; margin-bottom: 1rem; }
.hero__sub { color: var(--color-muted); max-width: 520px; margin-bottom: 1.5rem; font-size: 1.05rem; }

/* Sections */
.section { padding: 1rem 0; }

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 1rem 0 1.5rem;
}
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.25rem;
  box-shadow: 0 1px 4px rgba(124,58,237,0.06);
}
.card h3 { color: var(--color-accent); }

/* Services */
.service { margin-bottom: 2.5rem; }

/* About profile */
.profile-img {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 3px solid var(--color-border);
  float: right;
  margin: 0 0 1rem 1.5rem;
}

/* Post list */
.post-list { list-style: none; padding: 0; margin: 1.5rem 0; }
.post-list__item { display: flex; flex-direction: column; padding: 0.75rem 0; border-bottom: 1px solid var(--color-border); }
.post-list__meta { font-size: 0.8rem; color: var(--color-muted); margin-bottom: 0.2rem; }
.post-list__title { font-size: 1rem; font-weight: 500; }

/* Post detail */
.post { max-width: 680px; }
.post__header { margin-bottom: 2rem; }
.post__meta { color: var(--color-muted); font-size: 0.85rem; margin-top: 0.4rem; }
.post__body { line-height: 1.75; }
.post__footer { margin-top: 3rem; border-top: 1px solid var(--color-border); padding-top: 1rem; }

/* Contact form */
.contact-form { max-width: 520px; margin-top: 1.5rem; }
.field { margin-bottom: 1.25rem; }
.field label { display: block; font-size: 0.875rem; color: var(--color-muted); margin-bottom: 0.35rem; }
.field input,
.field textarea {
  width: 100%;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  padding: 0.55rem 0.75rem;
}
.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(124,58,237,0.1);
}
.field textarea { resize: vertical; }
button.btn { border: none; cursor: pointer; }

/* Alerts */
.alert {
  border-radius: 6px;
  padding: 0.85rem 1rem;
  margin-bottom: 1.5rem;
}
.alert--success { background: #f0fdf4; border: 1px solid #86efac; color: #166534; }
.alert--error   { background: #fef2f2; border: 1px solid #fca5a5; color: #991b1b; }
.alert p { margin: 0; }

/* Responsive */
@media (max-width: 600px) {
  .nav { flex-direction: column; gap: 0.75rem; padding: 0.75rem 1rem; }
  .nav__logo { height: 28px; }
  .hero h1 { font-size: 2rem; }
  .nav__links { gap: 1rem; flex-wrap: wrap; justify-content: center; }
  .profile-img { float: none; display: block; margin: 0 0 1rem 0; }
}