/* ==========================================================================
   Portfolio page (portfolio.html) — plain, minimal layout
   Load css/variables.css before this file.
   ========================================================================== */

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-ink);
  background-color: var(--color-white);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible {
  outline: 2px solid var(--color-blue);
  outline-offset: 3px;
}

/* --- Header --- */
.portfolio-header {
  border-bottom: 1px solid var(--color-mist);
  background-color: var(--color-white);
}

.portfolio-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container-max);
  margin-inline: auto;
  padding: 1rem var(--nav-edge);
}

.portfolio-nav__logo img {
  width: clamp(100px, 12vw, 130px);
  height: auto;
}

.portfolio-nav__actions {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.portfolio-nav__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-ink);
  background-color: var(--color-white);
  border: 1px solid var(--color-ink);
  border-radius: var(--radius-pill);
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.portfolio-nav__btn:hover {
  background-color: var(--color-ink);
  color: var(--color-white);
}

.portfolio-nav__btn--fill {
  background-color: var(--color-ink);
  color: var(--color-white);
}

.portfolio-nav__btn--fill:hover {
  background-color: var(--color-deepblue);
  border-color: var(--color-deepblue);
}

/* --- Main --- */
.portfolio-main {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: clamp(2.5rem, 6vw, 4rem) var(--nav-edge) clamp(3rem, 8vw, 5rem);
}

.portfolio-intro {
  margin-bottom: clamp(2rem, 5vw, 3rem);
  max-width: 32rem;
}

.portfolio-intro__title {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin-bottom: 0.75rem;
}

.portfolio-intro__text {
  font-size: 1rem;
  color: var(--color-ink);
  opacity: 0.75;
}

/* --- Project grid --- */
.portfolio-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.portfolio-card {
  border: 1px solid var(--color-mist);
  background-color: var(--color-white);
}

.portfolio-card__media {
  aspect-ratio: 16 / 9;
  background-color: var(--color-mist);
}

.portfolio-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Flat colour blocks — no gradients */
.portfolio-card__media--blue     { background-color: var(--color-blue); }
.portfolio-card__media--deepblue { background-color: var(--color-deepblue); }
.portfolio-card__media--magenta  { background-color: var(--color-magenta); }
.portfolio-card__media--ink      { background-color: var(--color-ink); }
.portfolio-card__media--mist     { background-color: var(--color-mist); }

.portfolio-card__body {
  padding: 1.25rem 1.25rem 1.5rem;
}

.portfolio-card__cat {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-deepblue);
  margin-bottom: 0.375rem;
}

.portfolio-card__title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 0.25rem;
}

.portfolio-card__status {
  font-size: 0.8125rem;
  color: var(--color-blue);
  margin-bottom: 0.625rem;
}

.portfolio-card__text {
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--color-ink);
  opacity: 0.8;
}

/* --- Footer --- */
.portfolio-footer {
  border-top: 1px solid var(--color-mist);
  padding: 1.5rem var(--nav-edge);
  text-align: center;
}

.portfolio-footer__copy {
  font-size: 0.8125rem;
  color: var(--color-ink);
  opacity: 0.55;
}

/* --- Responsive --- */
@media (min-width: 640px) {
  .portfolio-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
}

@media (min-width: 1024px) {
  .portfolio-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

@media (max-width: 767px) {
  .portfolio-nav {
    padding-block: 0.875rem;
  }
}