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

:root {
  --bg: #ffffff;
  --surface: #f8f8fa;
  --border: #e0e0e8;
  --text: #1a1a2e;
  --text-muted: #5a5a72;
  --red: #d62839;
  --blue: #1d6a9a;
  --red-soft: rgba(214, 40, 57, 0.1);
  --blue-soft: rgba(29, 106, 154, 0.1);
}

html,
body {
  height: 100%;
  width: 100%;
  overflow-x: hidden;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", system-ui, sans-serif;
  background: linear-gradient(135deg, var(--red-soft) 0%, var(--bg) 40%, var(--blue-soft) 100%);
  background-attachment: fixed;
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

.content {
  width: 100%;
  min-height: 100vh;
  padding: 2.5rem 5vw 3rem;
}

.hero {
  margin-bottom: 2.5rem;
  text-align: center;
}

.eyebrow {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--red);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.tagline {
  font-size: clamp(1rem, 2vw, 1.35rem);
  color: var(--text-muted);
}

.sections-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  width: 100%;
}

section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.75rem 2rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

section h2 {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 0.875rem;
  font-weight: 600;
}

section p {
  color: var(--text-muted);
  font-size: clamp(0.95rem, 1.5vw, 1.1rem);
}

.highlight {
  font-size: clamp(1.25rem, 2.5vw, 1.5rem);
  font-weight: 600;
  color: var(--red);
  margin-top: 0.25rem;
  margin-bottom: 0.75rem;
}

.subjects-note {
  margin-top: 0.5rem;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

.tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.tag-list li {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-size: clamp(0.85rem, 1.2vw, 1rem);
  color: var(--text);
}

.info-cards {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.info-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem;
}

.info-label {
  display: block;
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.info-card p {
  font-size: clamp(0.95rem, 1.5vw, 1.05rem);
  color: var(--text);
  font-weight: 500;
}

.info-card .note {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-muted);
}

.project-card {
  display: block;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s, transform 0.15s;
}

.project-card:hover {
  border-color: var(--blue);
  box-shadow: 0 4px 16px rgba(29, 106, 154, 0.12);
  transform: translateY(-2px);
}

.project-name {
  display: block;
  font-size: clamp(0.95rem, 1.5vw, 1.05rem);
  color: var(--blue);
  font-weight: 600;
}

.project-card:hover .project-name {
  color: var(--red);
}

.color-row {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.color-chip {
  padding: 0.5rem 1.25rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
}

.color-chip.red {
  background: var(--red-soft);
  color: var(--red);
  border: 1px solid var(--red);
}

.color-chip.blue {
  background: var(--blue-soft);
  color: var(--blue);
  border: 1px solid var(--blue);
}

.language-select {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.lang-btn {
  background: var(--bg);
  border: 2px solid var(--border);
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-size: clamp(0.85rem, 1.2vw, 1rem);
  color: var(--text);
  font-family: inherit;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.15s;
}

.lang-btn:hover {
  border-color: var(--blue);
  transform: translateY(-1px);
}

.lang-btn.selected {
  background: var(--blue-soft);
  border-color: var(--blue);
  color: var(--blue);
  font-weight: 600;
}

.selected-label {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
  font-weight: 600;
}

.selected-output {
  font-size: 1rem;
  color: var(--text);
  font-weight: 500;
  min-height: 1.5rem;
}

.lang-bar {
  grid-column: 1 / -1;
  margin-bottom: 0.5rem;
  background: var(--bg);
  border: 2px solid var(--blue);
}

@media (min-width: 769px) {
  .sections-grid {
    display: grid;
  }

  .lang-bar {
    max-width: 100%;
  }
}

@media (max-width: 768px) {
  .content {
    padding: 2rem 1.25rem;
  }

  .sections-grid {
    grid-template-columns: 1fr;
  }
}