.app-shell {
  display: flex;
  min-height: 100vh;
  min-height: 100dvh;
  flex-direction: column;
}

.site-header,
.site-footer,
.panel-main,
.project-details-main {
  width: min(100%, var(--max-width));
  margin-inline: auto;
  padding-inline: var(--page-padding);
}

.site-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 48px;
  padding-top: max(34px, env(safe-area-inset-top));
  padding-bottom: 44px;
}

.panel-main {
  flex: 1;
  padding-top: clamp(40px, 5vw, 72px);
  padding-bottom: 112px;
}

.project-details-main {
  flex: 1;
  padding-top: clamp(28px, 4vw, 58px);
  padding-bottom: 112px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding-top: 24px;
  padding-bottom: max(28px, env(safe-area-inset-bottom));
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  text-transform: lowercase;
}

.login-shell {
  display: grid;
  min-height: 100vh;
  min-height: 100dvh;
  grid-template-rows: auto 1fr auto;
  padding: max(34px, env(safe-area-inset-top)) var(--page-padding) max(28px, env(safe-area-inset-bottom));
}

.login-header,
.login-main,
.login-footer {
  width: min(100%, var(--max-width));
  margin-inline: auto;
}

.login-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 32px;
}

.login-main {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 1.25fr) minmax(360px, 460px);
  gap: clamp(72px, 10vw, 152px);
  padding-block: 84px;
}

.login-footer {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.08em;
  line-height: 1.6;
  text-transform: lowercase;
}

@media (min-width: 720px) and (max-width: 1099px) {
  .site-header {
    gap: 36px;
    padding-top: max(30px, env(safe-area-inset-top));
    padding-bottom: 34px;
  }

  .panel-main,
  .project-details-main {
    padding-top: 38px;
    padding-bottom: 92px;
  }

  .login-main {
    display: block;
    width: min(100%, 760px);
    margin-inline: auto;
    padding-block: 80px 64px;
  }

  .login-form {
    width: min(100%, 520px);
    margin-top: 64px;
  }
}

@media (max-width: 719px) {
  .site-header {
    display: block;
    padding-top: max(24px, env(safe-area-inset-top));
    padding-bottom: 20px;
  }

  .panel-main,
  .project-details-main {
    padding-top: 30px;
    padding-bottom: 76px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
  }

  .login-shell {
    padding-top: max(24px, env(safe-area-inset-top));
  }

  .login-main {
    display: block;
    padding-block: 68px 46px;
  }

  .login-form {
    margin-top: 52px;
  }
}

/* Desktop composition: editorial two-column grid from the typographic identity. */
@media (min-width: 1100px) {
  .site-header,
  .site-footer,
  .panel-main,
  .project-details-main {
    width: min(100%, 1360px);
  }

  .site-header {
    display: grid;
    grid-template-columns: minmax(208px, 240px) minmax(0, 960px);
    justify-content: start;
    column-gap: clamp(72px, 8vw, 128px);
    padding-top: max(52px, env(safe-area-inset-top));
    padding-bottom: 48px;
  }

  .panel-main {
    display: grid;
    grid-template-columns: minmax(208px, 240px) minmax(0, 960px);
    justify-content: start;
    column-gap: clamp(72px, 8vw, 128px);
    align-content: start;
    padding-top: 44px;
    padding-bottom: 100px;
  }

  .project-details-main {
    padding-top: 52px;
    padding-bottom: 104px;
  }

  .site-footer {
    display: grid;
    grid-template-columns: minmax(208px, 240px) minmax(0, 960px);
    justify-content: start;
    column-gap: clamp(72px, 8vw, 128px);
    padding-top: 18px;
    padding-bottom: max(38px, env(safe-area-inset-bottom));
  }

  .site-footer span:last-child {
    justify-self: end;
  }
}