:root {
  color-scheme: light dark;
  --bg: #f4f1ea;
  --surface: #ffffff;
  --surface-2: #f7f4ee;
  --text: #1d1b16;
  --muted: #6b6257;
  --primary: #1f5b9c;
  --primary-strong: #154372;
  --border: #d8d0c6;
  --shadow: 0 20px 45px rgba(17, 24, 39, 0.08);
  --radius: 5px;
}

[data-theme="dark"] {
  --bg: #0f1115;
  --surface: #161a21;
  --surface-2: #1e232c;
  --text: #f4f2ee;
  --muted: #a7a19a;
  --primary: #1f5ac7;
  --primary-strong: #174aa8;
  --border: #2b3240;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.55);
}

* {
  box-sizing: border-box;
}

html {
  scrollbar-gutter: stable;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-y: scroll;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: color-mix(in srgb, var(--surface) 85%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.logo-mark {
  background: var(--primary);
  color: #ffffff;
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.logo-mark svg {
  width: 22px;
  height: 22px;
  stroke: currentColor;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.logo-title {
  font-size: 1.05rem;
}

.logo-subtitle {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--muted);
}

.header-actions {
  display: flex;
  gap: 0.5rem;
  margin-left: auto;
}

.icon-button {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  height: 38px;
  width: 38px;
  min-width: 38px;
  padding: 0;
  border-radius: var(--radius);
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.format-toggle {
  width: auto;
  min-width: 54px;
  padding: 0 0.6rem;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.format-label {
  display: inline-block;
  line-height: 1;
}

.menu-icon {
  font-size: 1.2rem;
  line-height: 1;
}

.separator-icon {
  width: 100%;
  height: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.separator-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.sep-icon {
  width: 28px;
  height: 28px;
  display: none;
}

.sep-icon.is-active {
  display: block;
}


.icon-button:hover {
  border-color: var(--primary);
  transform: translateY(-1px);
}

.nav-link {
  color: var(--text);
  text-decoration: none;
}

.page {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.25rem 2rem;
}

.hero {
  display: none;
}

.section-title {
  font-family: "Space Grotesk", sans-serif;
  margin: 0 0 0.6rem;
}

.calculator {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 1rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.calculator-main {
  display: grid;
  gap: 0.9rem;
}

.rate-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.rate-option {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.75rem;
  font-size: 0.95rem;
  background: var(--surface-2);
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.rate-option input {
  accent-color: var(--primary);
}

.rate-option:hover {
  border-color: var(--primary);
}

.rate-custom {
  gap: 0.5rem;
}

.rate-custom input[type="number"] {
  width: 64px;
  padding: 0.25rem 0.4rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  color: inherit;
}

.rate-custom input[type="text"] {
  width: 64px;
  padding: 0.25rem 0.4rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-2);
  color: inherit;
}

.input-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
}

.field {
  display: grid;
  gap: 0.35rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.field input {
  padding: 0.7rem 0.8rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font-size: 1rem;
}

.field[data-active="true"] input {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 25%, transparent);
}

.calc-actions {
  display: flex;
  gap: 0.6rem;
}

.toggle-row {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.toggle-row input {
  width: 18px;
  height: 18px;
  accent-color: #2759c7;
}

.ghost-button {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.ghost-button:hover {
  border-color: var(--primary);
  background: color-mix(in srgb, var(--primary) 10%, transparent);
}

#clearAllBtn {
  background: #9d1919;
  color: #ffffff;
  border-color: transparent;
}

#clearAllBtn:hover {
  background: #821515;
}

.calculator-results {
  display: grid;
  gap: 0.75rem;
  align-content: start;
}

.result-card {
  padding: 0.85rem;
  border-radius: var(--radius);
  background: var(--surface-2);
  border: 1px solid var(--border);
}

.result-card.compact {
  padding: 0.7rem 0.9rem;
}

.result-precise {
  margin: 0.4rem 0 0;
  font-size: 0.85rem;
  color: var(--muted);
  display: none;
}

body.show-precise .result-precise {
  display: block;
}

.result-label {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.result-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
}

.result-value {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.6rem;
  letter-spacing: -0.02em;
}

.copy-button {
  border: 1px solid transparent;
  background: #9d1919;
  color: #ffffff;
  border-radius: var(--radius);
  padding: 0.35rem 0.6rem;
  font-size: 0.85rem;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.copy-button:hover {
  background: #821515;
}

.copy-button.is-copied {
  background: #821515;
  color: #ffffff;
}

.info-stack,
.content-stack {
  margin-top: 1.6rem;
  display: grid;
  gap: 1rem;
}

.info-card {
  padding: 1rem 1.1rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--border);
}

.info-card h1,
.info-card h2,
.info-card h3 {
  margin-top: 0;
  font-family: "Space Grotesk", sans-serif;
}

.info-card h1 {
  font-size: 1.6rem;
}

.info-heading {
  font-size: 1.6rem;
  margin: 1rem 0 0.4rem;
}

.info-card h4 {
  margin: 1rem 0 0.35rem;
  font-size: 1.05rem;
}

.info-card h5 {
  margin: 0.75rem 0 0.35rem;
  font-size: 0.95rem;
  color: var(--text);
}

.info-card ul {
  margin: 0.5rem 0 0 1rem;
  color: var(--muted);
}

.info-card p {
  color: var(--muted);
}

.calc-list {
  margin: 0.6rem 0 0.9rem;
  padding-left: 1.1rem;
  color: var(--muted);
}

.calc-list li {
  margin: 0.35rem 0;
}

.calc-list a {
  color: var(--text);
  font-weight: 600;
}

.calc-list a:hover {
  color: var(--primary);
}

.keycap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.1rem 0.45rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface-2);
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--text);
  box-shadow: inset 0 -2px 0 rgba(0, 0, 0, 0.08);
}

.shortcut-list {
  margin: 0.4rem 0 0;
  padding-left: 1.1rem;
  color: var(--muted);
}

.shortcut-list li {
  margin: 0.2rem 0;
}

.calculator-section {
  margin-top: 1.2rem;
  display: grid;
  gap: 1rem;
}


.calc-switcher {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.6rem;
}

.switcher-track {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  scroll-behavior: smooth;
  padding: 0.3rem 0;
  scrollbar-color: var(--primary) transparent;
}

.switcher-track::-webkit-scrollbar {
  height: 6px;
  background: var(--surface-2);
}

.switcher-track::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 5px;
  border: 1px solid var(--border);
}

.switcher-btn {
  border: 1px solid var(--border);
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  width: 36px;
  height: 36px;
  border-radius: 5px;
  cursor: pointer;
  font-size: 1.2rem;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.switcher-btn:hover {
  background: var(--primary-strong);
  border-color: var(--primary-strong);
}

.switcher-item {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  padding: 0.45rem 0.8rem;
  border-radius: 5px;
  cursor: pointer;
  white-space: nowrap;
  font-size: 0.9rem;
}

.switcher-item.is-active {
  border-color: var(--primary);
  color: #ffffff;
  background: var(--primary);
}

.calc-panels {
  display: grid;
}

.calc-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
  display: none;
  gap: 0.8rem;
}

.calc-panel.is-active {
  display: grid;
}

.calc-panel h2 {
  margin: 0;
  font-family: "Space Grotesk", sans-serif;
  font-size: 1.25rem;
}

.calc-subtitle {
  margin: 0;
  color: var(--muted);
}

.calc-info {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem;
  display: grid;
  gap: 0.4rem;
}

.calc-info p:first-child {
  margin: 0;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
}

.calc-info code {
  display: block;
  background: var(--surface);
  border: 1px solid color-mix(in srgb, var(--primary) 35%, var(--border));
  border-radius: var(--radius);
  padding: 0.6rem 0.75rem;
  font-family: "Space Grotesk", monospace;
  font-size: 0.95rem;
  color: var(--text);
  letter-spacing: 0.01em;
}

.result-inline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius);
  background: var(--surface-2);
  border: 1px solid var(--border);
  font-size: 0.95rem;
  color: var(--muted);
}

.result-inline strong {
  color: var(--text);
  font-size: 1.1rem;
}

.result-output {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.calc-panel .toggle-row {
  flex-wrap: wrap;
  gap: 0.8rem;
}

.is-hidden {
  display: none !important;
}

.info-card code,
.info-card pre {
  display: block;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.6rem 0.75rem;
  color: var(--text);
  overflow-x: auto;
  font-family: "Space Grotesk", monospace;
  font-size: 0.9rem;
}

.primary-link {
  display: inline-block;
  margin-top: 0.5rem;
  color: var(--primary);
  font-weight: 600;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
  color: var(--muted);
}

.site-footer a {
  color: var(--text);
  font-weight: 600;
}

.sticky-bottom {
  position: fixed;
  z-index: 999;
  left: 50%;
  transform: translateX(-50%);
  max-width: 1050px;
  width: 100%;
  text-align: center;
  padding: 5px 0;
  bottom: 0;
  background-image: url(https://submit.lv/wp-content/uploads/2023/09/ad_loader.svg);
  background-size: 160px;
  background-repeat: no-repeat;
  background-position: center;
  background-color: rgba(255, 255, 255, 1);
  border-top: 1px solid rgba(170, 170, 170, 0.2);
  transition: bottom 0.3s ease 0s;
  height: 90px;
  max-height: 90px;
}

.adsbygoogle-container {
  display: inline-block;
  width: 100%;
  max-width: 1050px;
  height: 90px;
  max-height: 90px;
}

.stbc {
  position: absolute;
  z-index: 2147483647;
  cursor: pointer;
  background: var(--primary);
  width: 30px;
  height: 30px;
  border-radius: var(--radius);
  right: 2px;
  top: 0;
  transform: translateY(-50%);
  display: flex;
  justify-content: center;
  align-items: center;
  border: none;
}

.sticky-bottom.hidden {
  display: none;
}



.page-hero h1 {
  font-family: "Space Grotesk", sans-serif;
  font-size: clamp(1.9rem, 3vw, 2.4rem);
  margin-bottom: 0.3rem;
}

.page-hero p {
  margin-top: 0;
  color: var(--muted);
}

@media (max-width: 900px) {
  .calculator {
    grid-template-columns: 1fr;
  }

  .input-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .page {
    padding: 1rem;
  }

  .site-header {
    padding: 0.9rem 1rem;
  }

  .result-value {
    font-size: 1.5rem;
  }
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
  z-index: 15;
}

.nav-drawer {
  position: fixed;
  top: 25px;
  right: 0;
  height: calc(100% - 25px);
  width: min(320px, 85vw);
  background: var(--surface);
  border-left: 1px solid var(--border);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.4rem;
  transform: translateX(100%);
  transition: transform 0.25s ease;
  z-index: 16;
}

.nav-drawer .nav-link {
  font-weight: 600;
  color: var(--text);
  display: block;
  padding: 0.35rem 0;
  margin: 0;
}

.nav-drawer .nav-link:hover {
  color: var(--primary);
}

.drawer-close {
  align-self: flex-end;
  border: none;
  background: transparent;
  font-size: 1.4rem;
  color: var(--muted);
  cursor: pointer;
}

body.nav-open .nav-backdrop {
  opacity: 1;
  pointer-events: auto;
}

body.nav-open .nav-drawer {
  transform: translateX(0);
}