/* ============================================================
   sections.css — Per-section styles
   ============================================================ */

/* ============================================================
   Hero Section
   ============================================================ */
.section--hero {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding-top: calc(var(--nav-height) + var(--space-8));
  padding-bottom: var(--space-16);
  text-align: center;
}

.hero__container {
  max-width: 760px;
  margin-inline: auto;
  padding-inline: var(--space-6);
}

/* Greeting line above the name */
.hero__greeting {
  display: block;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

/* Engineer name — h1 */
.hero__name {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: var(--space-4);
}

/* Professional title / tagline */
.hero__tagline {
  font-size: clamp(1.125rem, 3vw, 1.5rem);
  font-weight: 500;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
}

/* Accent color on the role keyword */
.hero__tagline-accent {
  color: var(--color-accent);
}

/* Short bio */
.hero__bio {
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin-inline: auto;
  margin-bottom: var(--space-12);
}

/* CTA button group */
.hero__cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ============================================================
   About / Skills Section  (placeholder — Task 4)
   ============================================================ */
.section--about {
  background-color: var(--color-bg-secondary);
}

/* ============================================================
   Projects Section
   ============================================================ */
.section--projects {
  background-color: var(--color-bg-primary);
}

/* Grid container — 1 col mobile, 2 col tablet, 3 col desktop */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ---- Project Card ---- */
.project-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: border-color var(--transition-base),
              transform var(--transition-base),
              box-shadow var(--transition-base);
}

.project-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(108, 99, 255, 0.15);
}

/* Image wrapper — fixed aspect ratio */
.project-card__image-wrapper {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background-color: var(--color-bg-tertiary);
}

.project-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-base);
}

.project-card:hover .project-card__image {
  transform: scale(1.04);
}

/* Card body — padding for all text content */
.project-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--space-6);
  gap: var(--space-4);
}

/* Project title */
.project-card__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.3;
  margin: 0;
}

/* Project description */
.project-card__description {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin: 0;
  flex: 1;
}

/* Technology badges row */
.project-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* Action links row */
.project-card__links {
  display: flex;
  flex-direction: row;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: auto;
}

/* ============================================================
   Contact Section  (placeholder — Task 7)
   ============================================================ */
.section--contact {
  background-color: var(--color-bg-secondary);
}

/* ============================================================
   Responsive — Hero
   ============================================================ */
@media (max-width: 767px) {
  .section--hero {
    padding-top: calc(var(--nav-height) + var(--space-12));
    text-align: center;
  }

  .hero__name {
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .hero__cta {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__cta .btn {
    justify-content: center;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .hero__name {
    font-size: clamp(2.5rem, 6vw, 3.5rem);
  }
}

/* ============================================================
   About / Skills Section
   ============================================================ */

/* Section container — max-width wrapper, centered */
.section--about .section__container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

/* Two-column grid: bio (left) + skills (right) on desktop */
.about__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: start;
}

/* Bio column */
.about__bio {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.about__bio-text {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

/* Skills column */
.about__skills {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

/* Individual skill category block */
.skills__category {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* Category label — small, uppercase, muted */
.skills__category-title {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* Badge row — wraps naturally */
.skills__badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* ============================================================
   Responsive — About Section
   ============================================================ */

/* Tablet (768px–1023px): single column, slightly wider gap */
@media (min-width: 768px) and (max-width: 1023px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

/* Desktop (≥ 1024px): two-column layout */
@media (min-width: 1024px) {
  .about__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
}

/* Mobile (< 768px): single column, tighter spacing */
@media (max-width: 767px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .about__bio-text {
    font-size: 1rem;
  }
}

/* ============================================================
   Contact Section
   ============================================================ */

/* Section container */
.section--contact .section__container {
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

/* Two-column grid: form (left) + info (right) on desktop */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-12);
  align-items: start;
}

/* Form wrapper column */
.contact__form-wrapper {
  display: flex;
  flex-direction: column;
}

/* Column sub-heading */
.contact__col-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-6);
}

/* ---- Contact Info column ---- */
.contact__info-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  list-style: none;
  padding: 0;
  margin: 0;
}

.contact__info-item {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: var(--space-4);
}

.contact__info-label {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  min-width: 5rem;
  flex-shrink: 0;
}

.contact__info-link {
  font-size: 0.9375rem;
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.contact__info-link:hover,
.contact__info-link:focus-visible {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* ============================================================
   Responsive — Contact Section
   ============================================================ */

/* Desktop (≥ 1024px): two-column layout */
@media (min-width: 1024px) {
  .contact__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }
}

/* Tablet (768px–1023px): single column, wider gap */
@media (min-width: 768px) and (max-width: 1023px) {
  .contact__grid {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
}

/* Mobile (< 768px): single column, tighter spacing */
@media (max-width: 767px) {
  .contact__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .contact__info-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }
}

/* ============================================================
   Notes Section
   ============================================================ */
.section--notes {
  padding-block: var(--space-16);
  background: var(--color-bg-secondary);
}

.notes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-8);
}

/* Note Card */
.note-card {
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: all 0.2s ease;
  cursor: pointer;
}

.note-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(108, 99, 255, 0.1);
}

.note-card__title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
  line-height: 1.3;
}

.note-card__excerpt {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.note-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 0.875rem;
}

.note-card__date {
  color: var(--color-text-muted);
}

.note-card__tag {
  background: var(--color-accent);
  color: var(--color-bg-primary);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.8rem;
}

/* Responsive adjustments for notes */
@media (max-width: 768px) {
  .notes-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .note-card {
    padding: var(--space-4);
  }
}