/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-family: var(--ff-mono);
  font-size: var(--fs-meta);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn--primary {
  background: var(--c-green);
  color: var(--c-cream);
  border: 1px solid var(--c-green);
}

.btn--primary:hover {
  background: var(--c-green-light);
  border-color: var(--c-green-light);
  color: var(--c-cream);
  box-shadow: 0 0 20px rgba(63, 138, 53, 0.2);
}

.btn--secondary {
  background: transparent;
  color: var(--c-cream);
  border: 1px solid var(--c-border-green);
}

.btn--secondary:hover {
  border-color: var(--c-orange);
  color: var(--c-orange);
}

.btn--small {
  padding: 0.45rem 1rem;
  font-size: calc(var(--fs-meta) - 0.04rem);
}

.btn-arrow {
  display: inline-block;
  transition: transform var(--transition-base);
}

.btn:hover .btn-arrow {
  transform: translateX(3px);
}

/* ── Cards: research lines ── */
.card-line {
  background: var(--c-surface-a);
  border: 1px solid var(--c-border-green);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card-line::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--c-green);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.card-line:hover {
  border-color: var(--c-green-light);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.card-line:hover::before {
  opacity: 1;
}

.card-line-mark {
  width: 28px;
  height: 28px;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-line-mark svg {
  width: 100%;
  height: 100%;
}

.card-line h3 {
  font-size: var(--fs-h3);
  margin-bottom: var(--space-xs);
  line-height: 1.3;
}

.card-line p {
  font-size: var(--fs-small);
  color: var(--c-gray);
  line-height: 1.7;
}

/* ── Cards: projects ── */
.card-project {
  background: var(--c-surface-b);
  border: 1px solid var(--c-border-green);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: all var(--transition-base);
}

.card-project:hover {
  border-color: var(--c-orange);
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

.card-project-meta {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.card-project-category {
  font-family: var(--ff-mono);
  font-size: var(--fs-meta);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--c-green-light);
}

.card-project-status {
  font-family: var(--ff-mono);
  font-size: var(--fs-meta);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-bg-deep);
  background: var(--c-orange);
  padding: 2px 8px;
  border-radius: var(--radius-xs);
}

.card-project h3 {
  font-size: var(--fs-h3);
  line-height: 1.3;
}

.card-project p {
  font-size: var(--fs-small);
  color: var(--c-gray);
  line-height: 1.7;
  flex-grow: 1;
}

/* ── Semillero blocks ── */
.semillero-block {
  background: var(--c-surface-a);
  border: 1px solid var(--c-border-green);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: all var(--transition-base);
}

.semillero-block:hover {
  border-color: var(--c-green-light);
}

.semillero-block-num {
  font-family: var(--ff-display);
  font-size: var(--fs-h2);
  font-weight: var(--fw-bold);
  color: var(--c-green);
  opacity: 0.35;
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.semillero-block h3 {
  font-size: var(--fs-h3);
  margin-bottom: var(--space-xs);
}

.semillero-block p {
  font-size: var(--fs-small);
  color: var(--c-gray);
  line-height: 1.7;
}

/* ── Publication entries ── */
.pub-entry {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--c-border-green);
  transition: background var(--transition-base);
}

.pub-entry:last-child {
  border-bottom: none;
}

.pub-entry:hover {
  background: var(--c-surface-b);
  padding-left: var(--space-sm);
  border-radius: var(--radius-sm);
}

.pub-year {
  font-family: var(--ff-mono);
  font-size: var(--fs-meta);
  color: var(--c-orange);
  letter-spacing: 0.08em;
  min-width: 50px;
  padding-top: 3px;
  flex-shrink: 0;
}

.pub-body {
  flex-grow: 1;
}

.pub-title {
  font-family: var(--ff-display);
  font-size: var(--fs-h3);
  font-weight: var(--fw-medium);
  margin-bottom: 2px;
  line-height: 1.3;
}

.pub-author {
  font-size: var(--fs-small);
  color: var(--c-gray);
  margin-bottom: 4px;
}

.pub-type {
  font-family: var(--ff-mono);
  font-size: var(--fs-meta);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-green-light);
}

.pub-action {
  flex-shrink: 0;
  align-self: center;
}

/* ── Event entries ── */
.event-entry {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: var(--space-md);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--c-border-green);
  align-items: start;
  transition: background var(--transition-base);
}

.event-entry:last-child {
  border-bottom: none;
}

.event-entry:hover {
  background: var(--c-surface-b);
  padding-left: var(--space-sm);
  border-radius: var(--radius-sm);
}

.event-date {
  font-family: var(--ff-mono);
  font-size: var(--fs-meta);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-orange);
  padding-top: 4px;
}

.event-body h3 {
  font-size: var(--fs-h3);
  margin-bottom: 2px;
  line-height: 1.3;
}

.event-body p {
  font-size: var(--fs-small);
  color: var(--c-gray);
  line-height: 1.6;
}

.event-place {
  font-family: var(--ff-mono);
  font-size: var(--fs-meta);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-gray);
  padding-top: 4px;
  text-align: right;
}

/* ── Team cards ── */
.card-member {
  background: var(--c-surface-a);
  border: 1px solid var(--c-border-green);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  text-align: center;
  transition: all var(--transition-base);
}

.card-member:hover {
  border-color: var(--c-green-light);
  transform: translateY(-2px);
}

.card-member-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--c-surface-b);
  border: 1px solid var(--c-border-green);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-sm);
  font-family: var(--ff-display);
  font-size: var(--fs-h3);
  font-weight: var(--fw-bold);
  color: var(--c-green-light);
}

.card-member h3 {
  font-size: var(--fs-body);
  margin-bottom: 2px;
}

.card-member p {
  font-family: var(--ff-mono);
  font-size: var(--fs-meta);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--c-gray);
}

/* ── Community section ── */
.community-pillars {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.community-pillar {
  padding: var(--space-sm);
  border-left: 2px solid var(--c-green);
  transition: border-color var(--transition-base);
}

.community-pillar:hover {
  border-color: var(--c-orange);
}

.community-pillar h3 {
  font-size: var(--fs-body);
  margin-bottom: var(--space-xs);
}

.community-pillar p {
  font-size: var(--fs-small);
  color: var(--c-gray);
  line-height: 1.6;
}

/* ── Forms ── */
.form-contact {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  max-width: 480px;
}

.form-row {
  display: flex;
  gap: var(--space-sm);
}

.form-field {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.form-field label {
  font-family: var(--ff-mono);
  font-size: var(--fs-meta);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-gray);
}

.form-field input,
.form-field textarea {
  padding: 0.65rem 0.85rem;
  background: var(--c-surface-a);
  border: 1px solid var(--c-border-green);
  border-radius: var(--radius-sm);
  color: var(--c-cream);
  font-size: var(--fs-small);
  transition: border-color var(--transition-base);
}

.form-field input:focus,
.form-field textarea:focus {
  border-color: var(--c-green-light);
}

.form-field input::placeholder,
.form-field textarea::placeholder {
  color: var(--c-gray);
  opacity: 0.5;
}

.form-field textarea {
  resize: vertical;
  min-height: 100px;
}

.form-field.error input,
.form-field.error textarea {
  border-color: var(--c-red);
}

.form-error-msg {
  font-size: var(--fs-meta);
  color: var(--c-red);
  display: none;
}

.form-field.error .form-error-msg {
  display: block;
}

/* ── Decorative separator ── */
.separator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: var(--space-lg) 0;
}

.separator-dot {
  width: 4px;
  height: 4px;
  background: var(--c-green);
  border-radius: 50%;
}

.separator-line {
  width: 40px;
  height: 1px;
  background: var(--c-border-green);
}

/* ── SVG marks for cards ── */
.mark-diamond {
  stroke: var(--c-green-light);
  fill: none;
  stroke-width: 1.5;
}

.mark-triangle {
  stroke: var(--c-orange);
  fill: none;
  stroke-width: 1.5;
}

.mark-circle {
  stroke: var(--c-red);
  fill: none;
  stroke-width: 1.5;
}

.mark-spiral {
  stroke: var(--c-green);
  fill: none;
  stroke-width: 1.5;
}

@media (max-width: 900px) {
  .event-entry {
    grid-template-columns: 80px 1fr;
  }

  .event-place {
    grid-column: 2;
    text-align: left;
  }

  .form-row {
    flex-direction: column;
  }
}

@media (max-width: 500px) {
  .event-entry {
    grid-template-columns: 1fr;
    gap: var(--space-xs);
  }

  .event-place {
    grid-column: 1;
  }

  .pub-entry {
    flex-direction: column;
    gap: var(--space-xs);
  }

  .pub-action {
    align-self: flex-start;
  }
}