.idea {
  position: fixed;
  inset: 0;
  z-index: 100;
  visibility: hidden;
  transition: visibility 0s 0.5s;
}

.idea.is-open {
  visibility: visible;
  transition: none;
}

.idea__overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
}

.idea.is-open .idea__overlay {
  opacity: 1;
}

.idea__character {
  position: absolute;
  bottom: 0;
  left: 0;
  width: auto;
  height: min(calc(100% - 52px), 1028px);
  opacity: 0;
  transform: translateX(-60px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  pointer-events: none;
  cursor: pointer;
}

.idea.is-open .idea__character {
  opacity: 1;
  pointer-events: auto;
  transform: none;
  transition: opacity 0.7s 0.15s var(--ease), transform 0.9s 0.15s var(--ease);
}

.idea__dialog {
  position: absolute;
  top: 50%;
  left: calc(50% - 212px);
  width: 652px;
  background: var(--paper);
  color: var(--ink);
  opacity: 0;
  transform: translateY(calc(-50% + 24px));
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
}

.idea.is-open .idea__dialog {
  opacity: 1;
  transform: translateY(-50%);
  transition: opacity 0.4s 0.1s var(--ease), transform 0.5s 0.1s var(--ease);
}

.idea__close {
  position: absolute;
  top: 0;
  left: calc(100% + 24px);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: var(--paper);
  cursor: pointer;
  transition: background-color 0.25s var(--ease);
}

.idea__close:hover {
  background: var(--white);
}

.idea__dialog:focus {
  outline: none;
}

.idea__handle {
  display: none;
}

.idea__trap {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.idea__form {
  position: relative;
  padding-bottom: 32px;
}

.idea__textarea {
  display: block;
  width: 100%;
  height: 630px;
  padding: 30px 32px 0;
  border: 0;
  outline: none;
  resize: none;
  background:
    linear-gradient(transparent 29px, rgba(42, 28, 10, 0.22) 29px, rgba(42, 28, 10, 0.22) 30px) 0 0 / 100% 30px local;
  color: var(--black);
  font: 500 18px/30px var(--font-sans);
}

.idea__textarea::placeholder {
  color: rgba(42, 28, 10, 0.5);
}

.idea__submit {
  display: flex;
  align-items: center;
  justify-content: center;
  width: calc(100% - 64px);
  height: 54px;
  margin: 34px 32px 0;
  border: 0;
  --rough-bg: var(--ink);
  color: var(--white);
  font: 700 18px/1.2 var(--font-sans);
  cursor: pointer;
}

.idea__submit:hover:not(:disabled) {
  --rough-bg: var(--accent);
}

.idea__submit:disabled {
  cursor: default;
}

.idea__sending {
  display: none;
}

.idea__form.is-sending .idea__submit-label {
  display: none;
}

.idea__form.is-sending .idea__sending {
  display: inline;
}

.idea__dots i {
  font-style: normal;
  animation: idea-dot 1.2s infinite;
}

.idea__dots i:nth-child(2) {
  animation-delay: 0.2s;
}

.idea__dots i:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes idea-dot {
  0%, 20% { opacity: 0; }
  40%, 100% { opacity: 1; }
}

.idea__error {
  position: absolute;
  top: calc(100% + 20px);
  left: 0;
  right: 0;
  color: var(--accent);
  font: 500 18px/1.2 var(--font-sans);
  text-align: center;
}

.idea__done {
  padding: 32px 0;
  text-align: center;
}

.idea__title {
  color: var(--black);
  font: 600 56px/1 var(--font-serif);
}

.idea__done-text {
  max-width: 560px;
  margin: 20px auto 0;
  color: var(--black);
  font: 500 16px/1.5 var(--font-sans);
}

.idea__done .idea__submit {
  margin-top: 32px;
}

@media (max-width: 1280px) {
  .idea__dialog {
    left: 50%;
    transform: translate(-50%, calc(-50% + 24px));
  }

  .idea.is-open .idea__dialog {
    transform: translate(-50%, -50%);
  }

  .idea__character {
    opacity: 0;
    visibility: hidden;
  }
}

@media (max-width: 800px) {
  .idea__dialog {
    width: calc(100% - 32px);
    max-height: calc(100% - 120px);
    top: auto;
    bottom: 16px;
    transform: translate(-50%, 24px);
  }

  .idea.is-open .idea__dialog {
    transform: translate(-50%, 0);
  }

  .idea__close {
    top: -60px;
    left: auto;
    right: 0;
  }

  .idea__textarea {
    height: min(390px, calc(100svh - 300px));
    padding: 30px 16px 0;
    font-size: 16px;
  }

  .idea__submit {
    width: calc(100% - 32px);
    margin: 24px 16px 0;
  }

  .idea__form {
    padding-bottom: 16px;
  }

  .idea__error {
    position: static;
    margin: 12px 16px 0;
    font-size: 16px;
  }

  .idea__error:empty {
    display: none;
  }

  .idea__title {
    font-size: 40px;
  }

  .idea__done-text {
    padding: 0 16px;
  }
}

@media (max-width: 600px) {
  .idea__character {
    top: 16px;
    bottom: auto;
    left: 50%;
    width: min(330px, 88vw);
    height: auto;
    visibility: inherit;
    transform: translate(-50%, -24px);
  }

  .idea.is-open .idea__character {
    transform: translate(-50%, 0);
  }

  .idea__dialog {
    top: auto;
    left: 0;
    bottom: 0;
    width: 100%;
    max-height: none;
    padding-top: 60px;
    transform: translateY(100%);
    transition: opacity 0.3s var(--ease), transform 0.4s var(--ease);
  }

  .idea.is-open .idea__dialog {
    transform: none;
  }

  .idea__dialog.is-dragging {
    transition: none;
  }

  .idea__handle {
    position: absolute;
    top: 0;
    left: 50%;
    display: block;
    width: 120px;
    height: 28px;
    transform: translateX(-50%);
    touch-action: none;
    cursor: grab;
  }

  .idea__handle::before {
    content: "";
    position: absolute;
    top: 8px;
    left: 40px;
    width: 40px;
    height: 4px;
    border-radius: 2px;
    background: rgba(42, 28, 10, 0.3);
  }

  .idea__close {
    top: 5px;
    left: auto;
    right: 18px;
    background: none;
  }

  .idea__close:hover {
    background: none;
  }

  .idea__textarea {
    overscroll-behavior: contain;
    width: calc(100% - 48px);
    height: min(278px, calc(100svh - 470px));
    min-height: 160px;
    margin: 0 24px;
    padding: 12px 16px;
    background: rgba(42, 28, 10, 0.08);
    font: 500 16px/1.5 var(--font-sans);
  }

  .idea__submit {
    width: calc(100% - 48px);
    margin: 27px 24px 0;
  }

  .idea__error {
    margin: 12px 24px 0;
  }

  .idea.is-done .idea__dialog {
    top: 50%;
    left: 12px;
    bottom: auto;
    width: calc(100% - 24px);
    padding-top: 0;
    transform: translateY(-50%);
  }

  .idea.is-done .idea__handle {
    display: none;
  }

  .idea.is-done .idea__close {
    top: 12px;
    right: 12px;
  }

  .idea__done {
    padding: 40px 0 16px;
  }

  .idea__title {
    font-size: 32px;
  }

  .idea__done-text {
    margin-top: 16px;
    padding: 0 24px;
    font-size: 16px;
    line-height: 1.4;
  }

  .idea__done .idea__submit {
    width: calc(100% - 32px);
    margin: 27px 16px 0;
  }
}