@media (max-width: 700px) {
  .portfolio-projects {
    padding: 48px 0;
    background: #f5f7fb;
  }

  .portfolio-projects .portfolio-heading {
    gap: 12px;
    margin-bottom: 22px;
  }

  .portfolio-projects .portfolio-heading h2 {
    font-size: 30px;
    line-height: 1.05;
    letter-spacing: -1px;
  }

  .portfolio-projects .portfolio-heading > p {
    font-size: 14px;
    line-height: 1.5;
  }

  .portfolio-projects .portfolio-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .portfolio-projects .portfolio-card {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: auto minmax(0, 1fr);
    min-height: 0;
    overflow: hidden;
    border: 1px solid #e2e8f1;
    border-radius: 16px;
    background: #fff;
    box-shadow: 0 8px 24px rgba(31, 52, 81, .07);
    transition: transform .18s ease, box-shadow .18s ease;
  }

  .portfolio-projects .portfolio-card:active {
    transform: scale(.992);
    box-shadow: 0 4px 14px rgba(31, 52, 81, .1);
  }

  .portfolio-projects .portfolio-card__image {
    display: block;
    width: 100%;
    height: auto;
    min-height: 0;
    aspect-ratio: 16 / 10;
  }

  .portfolio-projects .portfolio-card__image picture {
    display: block;
    width: 100%;
    height: 100%;
  }

  .portfolio-projects .portfolio-card__image img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
  }

  .portfolio-projects .portfolio-card:hover img {
    transform: none;
  }

  .portfolio-projects .portfolio-card__image span {
    top: 10px;
    left: 10px;
    padding: 5px 7px;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(22, 48, 82, .12);
  }

  .portfolio-projects .portfolio-card > div {
    display: flex;
    min-width: 0;
    flex-direction: column;
    padding: 12px 11px 11px;
  }

  .portfolio-projects .portfolio-card small {
    display: -webkit-box;
    overflow: hidden;
    color: #1168dc;
    font-size: 11px;
    font-weight: 750;
    line-height: 1.25;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 1;
  }

  .portfolio-projects .portfolio-card__title {
    display: -webkit-box;
    min-height: 0;
    overflow: hidden;
    margin: 7px 0 10px;
    color: #101828;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.28;
    letter-spacing: -.25px;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 3;
  }

  .portfolio-projects .portfolio-card__actions {
    align-items: center;
    gap: 7px;
    margin-top: auto;
  }

  .portfolio-projects .portfolio-card__actions > a {
    min-height: 34px;
    display: inline-flex;
    align-items: center;
    color: #0969da;
    font-size: 12px;
    white-space: nowrap;
  }

  .portfolio-projects .portfolio-card__actions button {
    width: 34px;
    min-height: 34px;
    padding: 0;
    overflow: hidden;
    border-color: #d6e1ef;
    border-radius: 10px;
    background: #f6f9fd;
    font-size: 0;
    white-space: nowrap;
  }

  .portfolio-projects .portfolio-card__actions button::before {
    content: '+';
    font-size: 19px;
    line-height: 1;
  }

  .portfolio-projects .portfolio-card__actions button.is-added::before {
    content: '✓';
  }
}

@media (max-width: 420px) {
  .portfolio-projects .portfolio-card > div {
    padding: 10px 9px 9px;
  }

  .portfolio-projects .portfolio-card__title {
    font-size: 13px;
    margin: 6px 0 8px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .portfolio-projects .portfolio-card {
    transition: none;
  }
}

/* App-style project tiles inspired by compact mobile service cards. */
@media (max-width: 700px) {
  .portfolio-projects .portfolio-card {
    position: relative;
    display: block;
    min-height: 170px;
    aspect-ratio: 5 / 4;
    min-width: 0;
    width: 100%;
    border: 0;
    border-radius: 16px;
    background: #172033;
    box-shadow: 0 10px 26px rgba(24, 42, 70, .14);
    isolation: isolate;
  }

  .portfolio-projects .portfolio-card::after {
    position: absolute;
    z-index: 2;
    inset: 28% 0 0;
    border-radius: 0 0 16px 16px;
    content: '';
    pointer-events: none;
    background: linear-gradient(180deg, rgba(8, 16, 30, 0), rgba(8, 16, 30, .9));
  }

  .portfolio-projects .portfolio-card__image {
    position: absolute;
    z-index: 1;
    inset: 0;
    width: 100%;
    height: 100%;
    aspect-ratio: auto;
    border-radius: inherit;
  }

  .portfolio-projects .portfolio-card__image picture,
  .portfolio-projects .portfolio-card__image img {
    width: 100%;
    height: 100%;
    border-radius: inherit;
  }

  .portfolio-projects .portfolio-card__image img {
    object-fit: cover;
  }

  .portfolio-projects .portfolio-card__image span {
    top: 9px;
    left: 9px;
  }

  .portfolio-projects .portfolio-card > div {
    position: absolute;
    z-index: 3;
    right: 0;
    bottom: 0;
    left: 0;
    display: block;
    padding: 46px 12px 13px;
    pointer-events: none;
  }

  .portfolio-projects .portfolio-card small {
    color: #dbeafe;
    font-size: 10px;
    font-weight: 600;
    text-shadow: 0 1px 4px rgba(0, 0, 0, .5);
  }

  .portfolio-projects .portfolio-card__title {
    margin: 6px 34px 0 0;
    color: #fff;
    font-size: 14px;
    font-weight: 650;
    line-height: 1.22;
    letter-spacing: -.15px;
    text-shadow: 0 1px 5px rgba(0, 0, 0, .65);
    -webkit-line-clamp: 3;
  }

  .portfolio-projects .portfolio-card__actions {
    position: static;
    margin: 0;
  }

  .portfolio-projects .portfolio-card__actions > a {
    display: none;
  }

  .portfolio-projects .portfolio-card__actions button {
    position: absolute;
    z-index: 4;
    right: 10px;
    bottom: 10px;
    width: 32px;
    min-height: 32px;
    border-color: rgba(255, 255, 255, .65);
    border-radius: 10px;
    background: rgba(255, 255, 255, .92);
    color: #0f5fc4;
    box-shadow: 0 4px 14px rgba(0, 0, 0, .16);
    pointer-events: auto;
  }
}

@media (max-width: 380px) {
  .portfolio-projects .portfolio-card {
    min-height: 156px;
  }

  .portfolio-projects .portfolio-card > div {
    padding: 42px 10px 11px;
  }

  .portfolio-projects .portfolio-card__title {
    margin-right: 30px;
    font-size: 13px;
    -webkit-line-clamp: 3;
  }

  .portfolio-projects .portfolio-card__actions button {
    right: 8px;
    bottom: 8px;
    width: 30px;
    min-height: 30px;
  }
}

/* Refined app-card presentation: separated tiles and readable light captions. */
@media (max-width: 700px) {
  .portfolio-projects .portfolio-grid {
    gap: 12px;
    padding: 10px;
    border: 1px solid #e1e8f1;
    border-radius: 20px;
    background: #eaf0f7;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, .75), 0 10px 26px rgba(31, 49, 75, .07);
  }

  .portfolio-projects .portfolio-card {
    border: 1px solid rgba(255, 255, 255, .9);
    border-radius: 15px;
    box-shadow: 0 7px 18px rgba(26, 43, 69, .12);
  }

  .portfolio-projects .portfolio-card::after {
    display: none;
  }

  .portfolio-projects .portfolio-card > div {
    padding: 10px 40px 10px 10px;
    border-radius: 0 0 14px 14px;
    background: rgba(255, 255, 255, .94);
    box-shadow: 0 -5px 16px rgba(14, 28, 47, .06);
    backdrop-filter: blur(8px);
  }

  .portfolio-projects .portfolio-card small {
    display: none;
  }

  .portfolio-projects .portfolio-card__title {
    margin: 0;
    color: #172033;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.22;
    letter-spacing: -.1px;
    text-shadow: none;
    -webkit-line-clamp: 2;
  }

  .portfolio-projects .portfolio-card__actions button {
    right: 8px;
    bottom: 8px;
    width: 30px;
    min-height: 30px;
    border-color: #c9dcf4;
    border-radius: 9px;
    background: #edf5ff;
    color: #0969da;
    box-shadow: none;
  }
}

@media (max-width: 380px) {
  .portfolio-projects .portfolio-grid {
    gap: 8px;
    padding: 8px;
    border-radius: 17px;
  }

  .portfolio-projects .portfolio-card > div {
    padding: 8px 35px 8px 8px;
  }

  .portfolio-projects .portfolio-card__title {
    font-size: 12px;
  }

  .portfolio-projects .portfolio-card__actions button {
    right: 6px;
    bottom: 6px;
    width: 28px;
    min-height: 28px;
  }
}