* {
  box-sizing: border-box;
}

:root {
  --primary: #3330F9;
  --primary-dark: #0A06DF;
  --primary-bg: #E7E6FE; 
  --primary-subtle: #C3C2FD; 
  --text: #202124;
  --muted: #68707a;
  --border: #dedfe3;
  --background: #f7f7f8;
  --soft: #f0f0f2;
  --success: #18794e;
  --danger: #c42525;
  --danger-bg: #fdeded;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background: var(--background);
  color: var(--text);
  font-size: 16px;
  line-height: 1.5;
  margin: 0;
  padding: 0;

  display: grid;
  min-height: 100dvh;
  grid-template-rows: auto 1fr auto;
}

header {
  text-align: center;
  padding: 36px 20px 28px;
  background: transparent;
  color: var(--text);
}

header p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

.float-backhome {
  .back-link {
    padding: 0.5rem;
    border: 1px solid var(--border);
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    vertical-align: middle;
    gap: 0.5rem;
    color: var(--primary);
    border-radius: 0.5rem;
    margin-top: 1rem;
    font-size: 0.875rem;
    line-height: 1;
    span {
      font-size: 1rem;
    }
    &:hover {
      background-color: var(--primary-bg);
    }
  }
}

@media (min-width: 990px) {
  .float-backhome {
    position: fixed;
    top: 1rem;
  }
}

footer {
  margin-top: auto;
  padding: 18px;
  text-align: center;
  background: #ededee;
  color: #30343a;
}

.grid-container {
  width: min(900px, calc(100% - 32px));
  margin: 0 auto 50px;
  /* padding: 1rem 0; */
}

.container {
  width: 100%;
}

.tool {
  background: #fff;
  padding: 24px;
  border-radius: 9px;
  box-shadow: 0 1px 5px rgba(0, 0, 0, 0.04);
}

.site-header {
  text-align: center;
  padding: 36px 20px 28px;
}

.site-header h1 {
  margin: 0 0 8px;
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.2;
}

.site-header p {
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}

h2 {
  margin: 0 0 10px;
  font-size: 25px;
}

h3 {
  margin: 26px 0 7px;
  font-size: 19px;
}

p {
  margin: 0;
  color: #454a51;
}

.clear-btn {
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: 7px;
  padding: 9px 18px;
  min-height: 43px;
  font: inherit;
  font-weight: 700;
  background-color: var(--danger-bg);
  color: var(--danger);
  transition: border-color .15s;
}

.clear-btn:hover {
  border-color: var(--danger);
}

.form-group {
  margin-bottom: 1rem;
}

.form-group textarea {
  margin-bottom: 0;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--muted);
}

textarea {
  width: 100%;
  padding: 9px 11px;
  box-sizing: border-box;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  font: inherit;
  font-size: 1rem;
}

input[type="text"] {
  width: 100%;
  min-height: 42px;
  padding: 9px 11px;
  box-sizing: border-box;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: var(--text);
  font: inherit;
  font-size: 1rem;
}

textarea:focus-visible,
input[type="text"]:focus-visible,
.clear-btn:focus-visible {
  outline: 3px solid rgba(91, 91, 240, .25);
  outline-offset: 2px;
}

.result-box {
  margin: 1rem 0;
  background: var(--soft);
  padding: 20px;
  border-radius: 8px;
}
.serp-preview {
  border: 1px solid var(--border);
  padding: 1rem;
  background: #fff;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.serp-title {
  color: #1a0dab;
  font-size: 18px;
  line-height: 1.2;
}
.serp-url {
  color: #006621;
  font-size: 14px;
}
.serp-description {
  color: #545454;
  font-size: 13px;
}
.char-count {
  font-size: 12px;
  color: var(--muted);
  float: right;
}
.alert {
  font-size: 12px;
  color: var(--danger);
  margin-bottom: 0.5rem;
}
.input-error {
  border-color: var(--danger);
}

ol {
  color: #454a51;
  padding-left: 1.2rem;
}

ol li {
  margin-bottom: 4px;
}

.related-tool {
  margin-top: 1rem;
  padding: 14px 16px;
  background: #f0f0ff;
  border: 1px solid #dcdcfb;
  border-radius: 8px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.related-tool p {
  margin: 0;
  color: var(--text);
  font-size: 0.9rem;
}

.related-tool-btn {
  color: var(--primary);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.related-tool-btn:hover {
  text-decoration: underline;
  color: var(--primary-dark);
}

.content-section {
  margin-top: 32px;
  padding: 0 4px;
}

.content-section h2 {
  margin: 0 0 10px;
  font-size: 25px;
}

.content-section h3 {
  margin: 26px 0 7px;
  font-size: 19px;
}

.content-section p,
.content-section li {
  color: #454a51;
}

@media (max-width: 700px) {
  header {
    padding-top: 26px;
  }

  .tool {
    padding: 17px;
  }
}