:root {
  --bg-main: #ececf1;
  --container-bg: #fff;
  --calculate-bg: #ececf1;
  --calculate-bg-hover: #e0e0e6;
  --checkbox-bg: #e3e3e8;
  --select-bg: #ffffff;
  --select-border: #d7d7d7;
  --text-main: #343541;
  --subtext: #6e6e80;
  --select-text: #6e6e80;
  --input-bg: #fff;
  --project-border: #d9d9e3;
  --primary: #10a37f;
  --primary-hover: #0d8a6a;
  --danger: #ff4d4f;
  --danger-hover: #d9363e;
  --input-border: #f7f7fa;
  --checkbox-border: #f7f7fa;
  --bubble-bg: #f7f7fa;
  --shadow: 0 4px 32px rgb(35 35 35 / 10%);
}
body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: 400;
}
.container {
  width: 100%;
  max-width: 540px;
  margin: 40px auto 40px auto;
  background: var(--container-bg);
  border-radius: 16px;
  padding: 0 0 16px 0;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.title {
  margin: 0;
  padding: 32px 32px 0 32px;
  margin-bottom: 20px;
  font-size: 2rem;
  color: var(--text-main);
  letter-spacing: -1px;
}
.sub-title {
  color: var(--text-main);
  font-size: 18px;
  margin-bottom: 10px;
}
form {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 0 32px;
}
.form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}
.project-input {
  padding: 10px;
}
.form-row input,
.form-row textarea {
  padding: 10px 12px;
  font-size: 16px;

  background: var(--input-bg);
  color: var(--text-main);
  transition: background 0.2s, border 0.2s;
}
.form-row textarea {
  border-radius: 8px;
  border: 1px solid var(--input-border);
}

.project-date-input:focus,
.form-row textarea:focus,
.project-fields textarea:focus {
  border: 1.5px solid var(--primary);
  outline: none;
  background: #fff;
}

.project-date-input {
  border-radius: 8px;
  border: 1px solid var(--input-border);
}

.projects-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 10px;
}
.project {
  background: var(--bubble-bg);
  border: 1px solid var(--input-border);
  border-radius: 16px;
  padding: 16px 18px 20px 18px;
  margin-bottom: 20px;
  position: relative;
}
.project-fields label {
  display: flex;
  flex-direction: column;
  margin-bottom: 2px;
}
.project-label {
  font-size: 18px;
  font-weight: 400;
  color: var(--text-main);
  margin-bottom: 10px;
}
.project-input {
  padding: 12px;
  font-size: 15px;
  border-radius: 6px;
  border: 1px solid var(--input-border);
  background: var(--input-bg);
  color: var(--text-main);
  margin-bottom: 2px;
  transition: border 0.2s;
}

.project-input:focus {
  border: 1.5px solid var(--primary);
  outline: none;
  background: #fff;
}

.project textarea {
  outline: none;
  min-height: 60px;
  resize: vertical;
  padding: 12px;
  font-size: 15px;
  border-radius: 6px;
  border: 1px solid var(--input-border);
  background: var(--input-bg);
  color: var(--text-main);
  margin-bottom: 10px;
  transition: border 0.2s;
}
.remove-project-btn {
  background: var(--danger);
  color: white;
  border: none;
  border-radius: 10px;
  padding: 8px 12px;
  cursor: pointer;
  font-size: 16px;
  margin-top: 0;
  margin-bottom: 0;
  text-align: right;
  transition: background 0.2s;
}
.remove-project-btn:hover {
  background: var(--danger-hover);
}
.add-project-btn,
.calculate-btn,
.send-btn {
  width: 100%;
  min-width: 120px;
  padding: 10px 18px;
  font-size: 16px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
  transition: background 0.2s, color 0.2s;
}
.add-project-btn {
  background: var(--primary);
  color: #fff;
}
.add-project-btn:hover {
  background: var(--primary-hover);
}
.calculate-btn {
  background: var(--calculate-bg);
  color: var(--text-main);
  border: 1px solid var(--input-border);
}
.calculate-btn:hover {
  background: var(--calculate-bg-hover);
}
.send-btn {
  background: var(--primary);
  color: #fff;
}
.send-btn:hover {
  background: var(--primary-hover);
}
#result {
  margin: 16px 0 0 0;
  font-size: 18px;
  padding-top: 12px;
  color: var(--text-main);
  max-width: 80%;
  align-self: flex-start;
  margin-left: 0;
}
#statusMessage {
  margin-top: 15px;
  font-weight: 500;
  color: var(--primary);
  font-size: 15px;
  padding-left: 2px;
}
.editor-toolbar button {
  color: var(--text-main);
}

.select {
  position: relative;
}

.select_active .select__svg {
  transform: rotate(180deg);
}

.select__rows {
  display: flex;
  border: 1px solid var(--input-border);
  background-color: var(--input-bg);
  border-radius: 6px;
}

.select_active .select__rows {
  border: 1.5px solid var(--primary);
}

.select__items {
  color: var(--select-text);
}

.select__input {
  flex: 1 1 auto;
  border: 0;
  padding: 12px 0 12px 12px;
}

.select__input:focus {
  border: initial;
}

.select__arrow-body {
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 10px;
}

.select__svg {
  height: 24px;
  width: 24px;
  transition: 0.3s;
}

.select__svg path {
  fill: #bdbdbd;
}

.select__body {
  position: absolute;
  z-index: 2;
  width: 100%;
  display: none;
  padding-top: 10px;
}

.select_active .select__body {
  display: block;
}

.select__items {
  background: var(--select-bg);
  border: 1px solid var(--select-border);
  border-radius: 6px;
}

.select__item {
  cursor: pointer;
  padding: 15px;
}

.select__item:hover {
  color: grey;
}

.select__loading {
  padding: 15px;
  color: var(--select-text);
}

.project__checkbox-label {
  cursor: pointer;
}

.project__checkbox {
  display: none;
}

.project__checkbox:checked + .project__icon-wrapper .project__internal-icon {
  opacity: 1;
}

.project__icon-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  width: 20px;
  height: 20px;
  border: 1px solid var(--checkbox-border);
  background-color: var(--checkbox-bg);
}

.project__internal-icon {
  position: absolute;
  fill: var(--text-main);
  top: 50%;
  left: 50%;
  opacity: 0;
  transform: translate(-50%, -50%);
}

.select__not-found {
  padding: 15px;
}

.select__not-found:hover {
  color: var(--subtext);
}

@media (max-width: 600px) {
  .container {
    max-width: 100vw;
    border-radius: 0;
    box-shadow: none;
  }
  form {
    padding: 0 8px;
  }
  h2 {
    padding: 24px 8px 0 8px;
  }
  #result {
    max-width: 98%;
  }
}
/* Тёмная тема */
body.dark-theme {
  --bg-main: #181a20;
  --container-bg: #23262f;
  --calculate-bg: #23262f;
  --calculate-bg-hover: #17191f;
  --checkbox-bg: #23262f;
  --select-bg: #23262f;
  --select-border: #393b41;
  --text-main: #f7f7fa;
  --subtext: #bdbdbd;
  --select-text: #dedede;
  --input-bg: #23262f;
  --input-border: #393b41;
  --primary: #10a37f;
  --primary-hover: #0d8a6a;
  --danger: #ff4d4f;
  --danger-hover: #d9363e;
  --input-border: #393b41;
  --checkbox-border: #51535a;
  --bubble-bg: #23262f;
  --shadow: 0 4px 32px rgb(0 0 0 / 40%);
}
@media (prefers-color-scheme: dark) {
  body:not(.light-theme) {
    --bg-main: #181a20;
    --container-bg: #23262f;
    --calculate-bg: #23262f;
    --calculate-bg-hover: #17191f;
    --checkbox-bg: #23262f;
    --select-bg: #23262f;
    --select-border: #393b41;
    --text-main: #f7f7fa;
    --subtext: #bdbdbd;
    --select-text: #dedede;
    --input-bg: #23262f;
    --input-border: #393b41;
    --primary: #10a37f;
    --primary-hover: #0d8a6a;
    --danger: #ff4d4f;
    --danger-hover: #d9363e;
    --input-border: #393b41;
    --checkbox-border: #51535a;
    --bubble-bg: #23262f;
    --shadow: 0 4px 32px rgb(0 0 0 / 40%);
  }
}
body.dark-theme .form-row input,
body.dark-theme .form-row textarea,
body.dark-theme .project .project-fields input,
body.dark-theme .project textarea {
  background: var(--input-bg);
}
body.dark-theme .form-row input:focus,
body.dark-theme .form-row textarea:focus,
body.dark-theme .project .project-fields input:focus,
body.dark-theme .project textarea:focus {
  background: var(--container-bg);
}
body.dark-theme input[type='date'] {
  background: var(--input-bg);
}
body.dark-theme input[type='date']:focus {
  background: var(--container-bg);
}
.theme-toggle-btn {
  position: absolute;
  top: 18px;
  right: 24px;
  z-index: 10;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 22px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  transition: background 0.2s;
}
.theme-toggle-btn:hover {
  background: var(--input-bg);
}