/* ============================================================
   Tools page stylesheet
   ============================================================ */

/* ---- Hero ---- */
.tools-hero {
  position: relative;
  height: 300px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.tools-hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../img/tools_supercomputer.png');
  background-size: cover;
  background-position: center center;
  opacity: 0.90;
}

.tools-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(8,12,24,0.10) 0%,
    rgba(8,12,24,0.08) 40%,
    rgba(8,12,24,0.82) 100%
  );
}

.tools-hero-content {
  position: relative;
  z-index: 2;
  max-width: 1060px;
  width: 100%;
  margin: 0 auto;
  padding: 0 2rem 2.5rem;
}

.tools-hero-content h1 {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  margin-bottom: 0.4em;
}

.tools-hero-content p {
  max-width: 640px;
  color: var(--text-muted);
  font-size: 1rem;
  margin: 0;
}

/* ---- Main layout ---- */
.tools-main {
  max-width: 1160px;
  margin: 0 auto;
  padding: 3rem 2rem 5rem;
}

/* ---- Project section ---- */
.tools-project {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  padding: 2.5rem 2.5rem 3rem;
}

.tools-project-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.4rem;
}

.tools-project-title {
  font-size: clamp(1.4rem, 2.5vw, 2rem);
  margin-bottom: 0.4em;
  color: #e8edf8;
}

.tools-project-subtitle {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 820px;
  margin-bottom: 1.6rem;
  line-height: 1.65;
}

.tools-body {
  max-width: 820px;
  margin-bottom: 2.5rem;
}

.tools-body p {
  color: var(--text);
  font-size: 0.96rem;
  line-height: 1.75;
}

/* ---- Diagram ---- */
.tools-diagram-wrapper {
  background: #0a0f1e;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 2.5rem;
}

.tools-diagram {
  display: block;
  width: 100%;
  height: auto;
}

/* ---- Tech stack grid ---- */
.tools-stack {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
}

.tools-stack-item {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
}

.tools-stack-label {
  font-size: 0.74rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: 0.2em;
}

.tools-stack-value {
  font-size: 0.88rem;
  color: var(--accent);
  font-weight: 500;
}

/* ---- Related Software section ---- */
.tools-refs {
  max-width: 1160px;
  margin: 3rem auto 0;
  padding: 0 2rem 5rem;
}

.tools-refs-title {
  font-family: var(--heading-font);
  font-size: clamp(1.2rem, 2.5vw, 1.65rem);
  font-weight: 400;
  color: #e8edf8;
  margin-bottom: 0.5rem;
}

.tools-refs-intro {
  font-size: 0.94rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.tools-refs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1rem;
}

.tools-ref-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  text-decoration: none;
  color: var(--text);
  transition: background 0.2s, border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.tools-ref-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.tools-ref-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.tools-ref-name {
  font-family: var(--heading-font);
  font-size: 1.05rem;
  font-weight: 400;
  color: #e8edf8;
  flex-shrink: 0;
}

.tools-ref-tag {
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2em 0.7em;
  border-radius: 100px;
  border: 1px solid;
  white-space: nowrap;
}

.tools-ref-tag--dft {
  color: var(--accent);
  background: rgba(79,142,247,0.08);
  border-color: rgba(79,142,247,0.3);
}

.tools-ref-tag--lang {
  color: var(--green);
  background: rgba(62,207,142,0.08);
  border-color: rgba(62,207,142,0.3);
}

.tools-ref-tag--md {
  color: var(--amber);
  background: var(--amber-glow);
  border-color: rgba(232,184,75,0.3);
}

.tools-ref-tag--db {
  color: #c084fc;
  background: rgba(192,132,252,0.08);
  border-color: rgba(192,132,252,0.3);
}

.tools-ref-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin: 0 0 1rem;
  flex: 1;
}

.tools-ref-link {
  font-size: 0.78rem;
  color: var(--accent);
  opacity: 0.7;
  transition: opacity 0.2s;
  margin-top: auto;
}

.tools-ref-card:hover .tools-ref-link { opacity: 1; }

/* ---- Responsive ---- */
@media (max-width: 680px) {
  .tools-project { padding: 1.5rem 1.2rem 2rem; }
  .tools-main    { padding: 2rem 1rem 3rem; }
  .tools-refs    { padding: 0 1rem 3rem; }
  .tools-refs-grid { grid-template-columns: 1fr; }
}