:root {
  --green: #25D366;
  --green-dark: #1DA851;
  --green-deep: #128C7E;
  --border: rgba(0, 0, 0, 0.1);
  --muted: rgba(0, 0, 0, 0.55);
  --muted-2: rgba(0, 0, 0, 0.7);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Space Grotesk", -apple-system, "Segoe UI", sans-serif;
  background: #ffffff;
  color: #000;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.tool-top {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(7, 94, 84, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.tool-top-inner {
  max-width: 1152px;
  margin: 0 auto;
  padding: 0 1rem;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.tool-logo img {
  height: 1.75rem;
  width: auto;
  display: block;
}

.tool-back {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
}

.tool-back:hover {
  color: var(--green);
}

.tool-main {
  flex: 1;
  max-width: 720px;
  width: 100%;
  margin: 0 auto;
  padding: 3rem 1rem 4rem;
}

.tool-main h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 0.75rem;
}

.tool-main .tool-desc {
  font-size: 1.0625rem;
  color: var(--muted-2);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.tool-box {
  background: #fbfbfb;
  border: 1px solid var(--border);
  border-radius: 1.25rem;
  padding: 1.75rem;
  margin-bottom: 1.25rem;
}

.tool-box label {
  display: block;
  font-size: 0.875rem;
  font-weight: 700;
  margin: 1rem 0 0.375rem;
}

.tool-box label:first-child {
  margin-top: 0;
}

.tool-box input[type="text"],
.tool-box input[type="url"],
.tool-box input[type="number"],
.tool-box input[type="email"],
.tool-box textarea,
.tool-box select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  font-size: 0.9375rem;
  font-family: inherit;
  background: #ffffff;
  color: #000;
  outline: none;
}

.tool-box input:focus,
.tool-box textarea:focus,
.tool-box select:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.18);
}

.tool-box textarea {
  min-height: 8rem;
  resize: vertical;
}

.tool-box .row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.tool-box .row > div {
  flex: 1;
  min-width: 140px;
}

.tool-hint {
  font-size: 0.8125rem;
  color: var(--muted);
  margin-top: 0.375rem;
}

.tool-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.25rem;
}

.tbtn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: none;
  border-radius: 9999px;
  padding: 0.7rem 1.4rem;
  font-size: 0.9375rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.tbtn-green {
  background: var(--green);
  color: #ffffff;
  box-shadow: 0 10px 24px -12px rgba(37, 211, 102, 0.6);
}

.tbtn-green:hover {
  background: var(--green-dark);
  transform: translateY(-2px);
}

.tbtn-outline {
  background: transparent;
  color: #000;
  border: 1px solid var(--border);
}

.tbtn-outline:hover {
  border-color: var(--green);
  color: var(--green-deep);
  transform: translateY(-2px);
}

.tool-out {
  margin-top: 1.25rem;
  display: none;
}

.tool-out.show {
  display: block;
}

.tool-out textarea,
.tool-out .out-box {
  width: 100%;
  background: #ffffff;
  border: 1px solid var(--green);
  border-radius: 0.75rem;
  padding: 1rem;
  font-size: 0.9375rem;
  word-break: break-all;
  line-height: 1.5;
}

.tool-out textarea {
  min-height: 6rem;
  resize: vertical;
}

.copy-ok {
  color: var(--green-deep);
  font-size: 0.875rem;
  font-weight: 700;
  margin-left: 0.5rem;
  display: none;
}

.copy-ok.show {
  display: inline;
}

.preview {
  margin-top: 1rem;
  border: 1px dashed var(--border);
  border-radius: 0.75rem;
  padding: 1.25rem;
  text-align: center;
  background: #ffffff;
}

.preview-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 0.875rem;
}

.entry-row {
  display: grid;
  grid-template-columns: 1fr 2fr auto;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.entry-row .del {
  background: #fee2e2;
  color: #b91c1c;
  border: none;
  border-radius: 0.5rem;
  padding: 0 0.75rem;
  cursor: pointer;
  font-weight: 700;
}

.tool-foot {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--muted);
}

.tool-foot a {
  color: var(--green-deep);
  text-decoration: none;
  font-weight: 600;
}

@media (max-width: 600px) {
  .tool-box {
    padding: 1.25rem;
  }
}