/* ===========================
   Self-hosted Roboto Font
   =========================== */

@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/roboto-400-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/roboto-400-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/roboto-700-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/roboto-700-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 900;
  font-display: swap;
  src: url('../fonts/roboto-900-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

@font-face {
  font-family: 'Roboto';
  font-style: normal;
  font-weight: 900;
  font-display: swap;
  src: url('../fonts/roboto-900-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ===========================
   Design Tokens
   =========================== */

:root {
  --bg: #fff;
  --text: #000;
  --text-muted: #555;
  --border: #000;
  --font: 'Roboto', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --container-max: 680px;
}

[data-theme="dark"] {
  --bg: #111;
  --text: #eee;
  --text-muted: #999;
  --border: #eee;
}

/* ===========================
   Reset & Base
   =========================== */

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

body {
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* ===========================
   Layout
   =========================== */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 6rem 1.5rem 4rem;
}

/* ===========================
   Top Bar (Lang + Theme Toggle)
   =========================== */

.top-bar {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.lang-toggle {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-decoration: none;
  color: var(--text-muted);
  transition: color 0.15s ease;
}

.lang-toggle:hover {
  color: var(--text);
  opacity: 1;
}

#theme-toggle {
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0;
  line-height: 1;
  transition: color 0.2s ease;
}

#theme-toggle:hover {
  opacity: 0.6;
}


/* ===========================
   Header / Hero
   =========================== */

header {
  margin-bottom: 4rem;
}

.hero-name {
  font-size: 4.5rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.75rem;
}

.hero-subtitle {
  font-size: 1.125rem;
  font-weight: 400;
  color: var(--text-muted);
}

/* ===========================
   Sections
   =========================== */

.section {
  padding: 2.5rem 0;
  border-bottom: 1px solid var(--border);
}

.section:last-of-type {
  border-bottom: none;
}

h2 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  color: var(--text-muted);
}

p {
  color: var(--text);
  max-width: 55ch;
}

/* ===========================
   Links
   =========================== */

.links {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
  transition: opacity 0.15s ease;
}

a:hover {
  opacity: 0.5;
}

/* ===========================
   Footer
   =========================== */

footer {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===========================
   Responsive
   =========================== */

@media (max-width: 640px) {
  .hero-name {
    font-size: 2.75rem;
  }

  .container {
    padding: 4rem 1.25rem 3rem;
  }

  .section {
    padding: 2rem 0;
  }
}

/* ===========================
   Print
   =========================== */

@media print {
  .top-bar { display: none; }
  body { background: #fff; color: #000; }
  .section { border-color: #ccc; }
  a { color: #000; }
  footer { border-color: #ccc; }
}