:root {
  --calc-bg: var(--bg);
  --calc-surface: rgba(255, 255, 255, 0.03);
  --calc-border: rgba(255, 255, 255, 0.14);
  --calc-text: var(--white);
  --calc-muted: var(--text-muted);
  --calc-primary: var(--green);
  --calc-shadow: 0 10px 24px rgba(0, 0, 0, 0.25);
  --calc-font-family: "Inter", "Segoe UI", sans-serif;
  --calc-heading-weight: 700;
  --calc-control-size: 13px;
  --calc-control-weight: 600;
  --calc-control-radius: 8px;
  --calc-title-size: 22px;
  --calc-button-size: 16px;
  --calc-input-size: 16px;
}

.calculator-body {
  margin: 0;
  background: radial-gradient(circle at 20% 10%, rgba(5, 184, 125, 0.08) 0%, var(--calc-bg) 55%, var(--calc-bg) 100%);
}

.calculator-shell {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  min-height: 0;
}

.calculator-shell .header {
  margin: 12px 12px 0;
}

.calculator-page {
  height: 100%;
  padding: 12px;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  grid-template-rows: minmax(0, 1fr) 290px;
  grid-template-areas:
    "logic main"
    "logic converter";
  gap: 12px;
  overflow: hidden;
  box-sizing: border-box;
  color: var(--calc-text);
  font-family: var(--calc-font-family);
  font-size: 14px;
  line-height: 1.35;
}

.section-title,
.display-title {
  margin: 0;
  font-size: var(--calc-title-size);
  font-weight: var(--calc-heading-weight);
  line-height: 1.15;
  color: var(--calc-text);
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-title__icon {
  width: 33px;
  height: 33px;
  flex: 0 0 33px;
}

.glass-card {
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.04), var(--calc-surface));
  border: 1px solid var(--calc-border);
  border-radius: 16px;
  box-shadow: var(--calc-shadow);
  backdrop-filter: blur(14px);
}


.calculator-main {
  grid-area: main;
  min-width: 0;
  display: grid;
  grid-template-rows: auto minmax(0, 0.78fr);
  gap: 12px;
}

.display-card {
  padding: 10px 8px 8px;
  min-height: 0;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  align-items: start;
  column-gap: 10px;
  row-gap: 6px;
}

.display-title {
  grid-column: 1 / -1;
  margin: 0;
  margin-block: 0;
  padding: 0;
  padding-block: 0;
  white-space: normal;
  overflow: visible;
  text-overflow: clip;
  max-width: none;
  line-height: 1.15;
}

.display-card > .display-title {
  margin-top: 0;
  margin-bottom: 0;
  padding-top: 0;
  padding-bottom: 0;
}

.display-expression {
  grid-column: 1;
  margin-top: 0;
  margin-bottom: 0;
  padding-top: 0;
  padding-bottom: 0;
  align-self: start;
  font-size: 16px;
  letter-spacing: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  height: 32px;
  min-height: 32px;
  display: flex;
  align-items: center;
  padding-inline: 11px;
  line-height: 1;
  border-radius: 9px;
  background: #eaf3f1;
  border: 1px solid #b6ddd5;
  box-shadow: none;
  color: #2f4a45;
}

.display-expression:empty::before {
  content: "Введите выражение...";
  color: #95aea8;
}

.display-result {
  grid-column: 2;
  margin-top: 0;
  margin-bottom: 0;
  padding-top: 0;
  padding-bottom: 0;
  align-self: start;
  height: 32px;
  min-height: 32px;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  text-align: right;
  color: #1f6a55;
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  min-width: 42px;
  padding-inline: 6px;
  overflow: hidden;
  text-overflow: ellipsis;
  border-radius: 0;
  background: transparent;
  border: 0;
}

.display-result:empty::before {
  content: "=";
  width: 42px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 9px;
  color: #ffffff;
  background: linear-gradient(135deg, #14be8a, #10a978);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

.keyboard-card {
  min-height: 0;
  padding: 8px;
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 8px;
}

.mode-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.tab {
  height: 34px;
  border: 1px solid rgba(129, 152, 229, 0.3);
  border-radius: var(--calc-control-radius);
  color: var(--calc-text);
  background: rgba(20, 29, 52, 0.85);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--calc-button-size);
  font-weight: var(--calc-control-weight);
  line-height: 1;
}

.tab.is-active {
  background: linear-gradient(90deg, rgba(5, 184, 125, 0.25), rgba(5, 184, 125, 0.12));
  border-color: rgba(5, 184, 125, 0.65);
}

.keyboard-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 6px;
  min-height: 0;
}

.keyboard-grid button,
.logic-buttons button {
  min-height: 30px;
  border: 1px solid rgba(123, 146, 225, 0.2);
  border-radius: var(--calc-control-radius);
  background: rgba(20, 28, 48, 0.86);
  color: var(--calc-text);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--calc-control-size);
  font-weight: var(--calc-control-weight);
  line-height: 1;
  transition: background-color 0.16s ease, border-color 0.16s ease, transform 0.12s ease;
}

.calculator-main .keyboard-grid button {
  font-size: var(--calc-button-size);
}

.keyboard-grid button:hover,
.logic-buttons button:hover,
.logic-vars button:hover,
.logic-actions button:hover,
.base-select__option:hover,
.tab:hover,
.base-select__trigger:hover {
  border-color: rgba(5, 184, 125, 0.55);
}

.keyboard-grid .key-primary {
  background: linear-gradient(90deg, #05b87d, #059a69);
  box-shadow: 0 0 14px rgba(5, 184, 125, 0.35);
}

.keyboard-grid .key-wide {
  grid-column: span 2;
}

.converter-panel,
.logic-panel {
  padding: 12px;
  min-height: 0;
}

.logic-panel {
  grid-area: logic;
  width: 100%;
  height: 100%;
  align-self: stretch;
  justify-self: stretch;
  display: grid;
  grid-template-rows: auto 1fr;
  padding: 12px;
}

.converter-panel {
  grid-area: converter;
}

.converter-panel .section-title,
.logic-panel .section-title {
  margin: 0;
}

.logic-panel .section-title {
  margin-top: 0;
  position: static;
}

.converter-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.converter-form label,
.logic-expression label {
  display: grid;
  gap: 4px;
  font-size: 12px;
  font-weight: 500;
  color: var(--calc-muted);
}

.logic-expression label {
  font-size: 15px;
}

.converter-form input,
.converter-form select,
.logic-expression input {
  height: 34px;
  border: 1px solid rgba(123, 146, 225, 0.27);
  border-radius: var(--calc-control-radius);
  background: rgba(16, 25, 44, 0.9);
  color: var(--calc-text);
  padding: 0 10px;
  font-family: inherit;
  font-size: var(--calc-control-size);
  font-weight: 500;
}

.converter-panel .converter-form label {
  font-size: 15px;
}

.converter-panel .converter-form input,
.converter-panel .base-select__trigger,
.converter-panel .base-select__option {
  font-size: var(--calc-input-size);
}

#logic-expression-input {
  font-size: calc(var(--calc-control-size) * 2);
  background:
    linear-gradient(135deg, rgba(5, 184, 125, 0.22), rgba(5, 184, 125, 0.08)),
    rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(5, 184, 125, 0.5);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    inset 0 0 16px rgba(5, 184, 125, 0.16),
    0 0 0 1px rgba(5, 184, 125, 0.16),
    0 0 18px rgba(5, 184, 125, 0.2);
  color: var(--calc-text);
}

#logic-expression-input::placeholder {
  color: rgba(177, 193, 232, 0.8);
}

#logic-expression-input:focus {
  outline: none;
  border-color: rgba(5, 184, 125, 0.9);
  box-shadow:
    0 0 0 2px rgba(5, 184, 125, 0.24),
    0 0 20px rgba(5, 184, 125, 0.28),
    0 10px 24px rgba(0, 0, 0, 0.24);
}

.base-select {
  position: relative;
}

.base-select__trigger {
  width: 100%;
  height: 34px;
  border: 1px solid rgba(123, 146, 225, 0.27);
  border-radius: var(--calc-control-radius);
  background: rgba(16, 25, 44, 0.9);
  color: var(--calc-text);
  text-align: left;
  padding: 0 34px 0 10px;
  cursor: pointer;
  position: relative;
  font-family: inherit;
  font-size: var(--calc-control-size);
  font-weight: 500;
}

.base-select__trigger::after {
  content: "▾";
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--calc-muted);
  pointer-events: none;
}

.base-select__menu {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 30;
  max-height: 220px;
  overflow-y: auto;
  border: 1px solid rgba(123, 146, 225, 0.35);
  border-radius: 10px;
  background: rgba(12, 20, 36, 0.98);
  backdrop-filter: blur(10px);
  box-shadow: 0 12px 30px rgba(5, 10, 24, 0.65);
  padding: 4px;
}

.base-select__option {
  width: 100%;
  min-height: 30px;
  border: 1px solid transparent;
  border-radius: var(--calc-control-radius);
  background: transparent;
  color: var(--calc-text);
  text-align: left;
  padding: 0 8px;
  cursor: pointer;
  font-family: inherit;
  font-size: var(--calc-control-size);
  font-weight: var(--calc-control-weight);
  line-height: 1;
}

.base-select__option:hover {
  background: rgba(80, 102, 170, 0.28);
}

.base-select__option.is-selected {
  background: rgba(5, 184, 125, 0.2);
  border-color: rgba(5, 184, 125, 0.45);
}

.converter-preview {
  margin-top: 8px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  font-size: 13px;
}

.converter-preview > div {
  min-height: 32px;
  display: flex;
  align-items: center;
  padding: 0 8px;
  border-radius: 8px;
  border: 1px solid rgba(123, 146, 225, 0.2);
  background: rgba(16, 24, 42, 0.9);
}

.converter-status,
.logic-status {
  min-height: 18px;
  margin-top: 8px;
  font-size: 15px;
  color: var(--calc-muted);
}

.converter-panel .converter-status,
.converter-panel .converter-preview {
  font-size: 15px;
}

.logic-layout {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-rows: auto 1fr;
  gap: 10px;
  min-height: 0;
}

.logic-expression {
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
}

.truth-table-wrap {
  min-height: 0;
  overflow: auto;
  border: 1px solid rgba(123, 146, 225, 0.22);
  border-radius: 10px;
  background: rgba(13, 22, 40, 0.72);
  padding: 6px;
}

.logic-buttons {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.logic-buttons button,
.logic-vars button,
.logic-actions button {
  min-height: 32px;
  border: 1px solid #d8e8e3;
  border-radius: 8px;
  background: #f6f8f8;
  color: #344b46;
  cursor: pointer;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  line-height: 1;
  transition: background-color 0.16s ease, border-color 0.16s ease, transform 0.12s ease;
}

.logic-vars {
  margin-top: 8px;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
}

.logic-vars button {
  min-height: 30px;
  background: #eef8f5;
  border-color: #bfe5da;
  color: #1a8b68;
  box-shadow: none;
}

.logic-actions {
  margin-top: 10px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.logic-actions button {
  min-height: 34px;
}

#logic-build-btn {
  background: linear-gradient(135deg, #12bd87, #0fa877);
  border-color: rgba(0, 0, 0, 0.08);
  color: #ffffff;
}

#logic-clear-btn {
  background: #f5f7f8;
  border-color: #d8e8e3;
  color: #344b46;
}

#logic-expression-input {
  background: #eaf3f1;
  border: 1px solid #b6ddd5;
  color: #2f4a45;
  box-shadow: none;
}

#logic-expression-input::placeholder {
  color: #95aea8;
}

.calculator-shell .footer {
  margin: 0 12px 12px;
}

@media (min-width: 1024px) {
  .calculator-body {
    height: 100vh;
    overflow: hidden;
  }

  .calculator-shell {
    height: 100vh;
    max-height: 100vh;
  }

  .calculator-shell .header {
    margin-bottom: 8px;
  }

  .calculator-shell .footer {
    margin: 8px 12px 12px;
  }
}

.truth-table {
  width: 100%;
  min-width: 280px;
  border-collapse: collapse;
  font-size: 16px;
  table-layout: fixed;
}

.truth-table th,
.truth-table td {
  border: 1px solid rgba(123, 146, 225, 0.24);
  text-align: center;
  padding: 4px 0;
}

.truth-table__placeholder td {
  color: rgba(163, 176, 207, 0.35);
}

.truth-table th {
  color: #b9c8f5;
  background: rgba(25, 37, 63, 0.88);
  position: sticky;
  top: 0;
  z-index: 1;
}

[data-theme="light"] .calculator-body {
  background: radial-gradient(circle at 20% 10%, rgba(5, 184, 125, 0.08) 0%, #f5f5f7 55%, #f5f5f7 100%);
}

[data-theme="light"] .glass-card {
  background: linear-gradient(165deg, rgba(255, 255, 255, 0.95), rgba(246, 247, 250, 0.95));
  border-color: rgba(0, 0, 0, 0.12);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .section-title,
[data-theme="light"] .display-title,
[data-theme="light"] .display-expression,
[data-theme="light"] .display-result,
[data-theme="light"] .converter-form input,
[data-theme="light"] .logic-expression input,
[data-theme="light"] .base-select__trigger,
[data-theme="light"] .base-select__option,
[data-theme="light"] .converter-preview > div,
[data-theme="light"] .truth-table th,
[data-theme="light"] .truth-table td {
  color: #1d1d1f;
}

[data-theme="light"] .tab,
[data-theme="light"] .keyboard-grid button,
[data-theme="light"] .logic-buttons button,
[data-theme="light"] .logic-vars button,
[data-theme="light"] .logic-actions button,
[data-theme="light"] .calculator-header__pill {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.15);
  color: #1d1d1f;
  box-shadow: none;
}

[data-theme="light"] .tab.is-active,
[data-theme="light"] .logic-vars button,
[data-theme="light"] .keyboard-grid .key-primary {
  background: rgba(5, 184, 125, 0.14);
  border-color: rgba(5, 184, 125, 0.55);
  color: #124635;
  box-shadow: none;
}

[data-theme="light"] .keyboard-grid button:hover,
[data-theme="light"] .logic-buttons button:hover,
[data-theme="light"] .logic-vars button:hover,
[data-theme="light"] .logic-actions button:hover,
[data-theme="light"] .base-select__option:hover,
[data-theme="light"] .tab:hover,
[data-theme="light"] .base-select__trigger:hover,
[data-theme="light"] .calculator-header__pill:hover {
  border-color: rgba(5, 184, 125, 0.65);
  background: rgba(5, 184, 125, 0.08);
}

[data-theme="light"] .display-expression,
[data-theme="light"] #logic-expression-input {
  background: linear-gradient(135deg, rgba(5, 184, 125, 0.1), rgba(5, 184, 125, 0.04)), #ffffff;
  border-color: rgba(5, 184, 125, 0.42);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7), 0 0 0 1px rgba(5, 184, 125, 0.12);
}

[data-theme="light"] #base-input-value {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.15);
  color: #1d1d1f;
  box-shadow: none;
}

[data-theme="light"] #base-output-value {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.15);
  color: #1d1d1f;
  box-shadow: none;
}

[data-theme="light"] #logic-expression-input:focus {
  border-color: rgba(5, 184, 125, 0.72);
  box-shadow: 0 0 0 2px rgba(5, 184, 125, 0.18);
}

[data-theme="light"] .base-select__menu,
[data-theme="light"] .truth-table-wrap,
[data-theme="light"] .logic-expression {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .base-select,
[data-theme="light"] .base-select__trigger,
[data-theme="light"] .base-select__menu,
[data-theme="light"] .base-select__option {
  background: #ffffff;
  color: #1d1d1f;
}

[data-theme="light"] .truth-table th {
  background: rgba(5, 184, 125, 0.12);
}

[data-theme="light"] .converter-preview > div {
  background: #ffffff;
  border-color: rgba(0, 0, 0, 0.15);
  color: #1d1d1f;
}

@media (max-width: 1480px) {
  .calculator-page {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: minmax(0, 1fr) 320px;
    grid-template-areas:
      "logic main"
      "logic converter";
  }

  .display-expression {
    font-size: 24px;
  }

  .display-result {
    font-size: 28px;
  }
}

@media (min-width: 1700px) {
  .display-title,
  .logic-panel .section-title {
    white-space: nowrap;
  }
}