@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@500;700;900&display=swap');

:root {
  --tether: #26A17B;
  --tether-light: #5fd3ae;
  --tether-dark: #14705a;
  --bg-1: #06130f;
  --bg-2: #0c2820;
  --card: rgba(255, 255, 255, 0.045);
  --card-border: rgba(38, 161, 123, 0.35);
  --text: #dcefe8;
  --muted: #8fb5a7;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--bg-1);
  background-image:
    radial-gradient(circle at 15% 10%, rgba(38, 161, 123, 0.28), transparent 45%),
    radial-gradient(circle at 90% 85%, rgba(38, 161, 123, 0.18), transparent 50%),
    linear-gradient(160deg, var(--bg-1), var(--bg-2));
  background-attachment: fixed;
}

h1, h2, h3, label, button, .label {
  font-family: 'Roboto', Arial, sans-serif;
}

/* ---------- Logo ---------- */
.logo-header {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px 16px 8px;
  width: 100%;
}

.logo-header a {
  display: inline-flex;
  align-items: center;
  background: #fff;
  padding: 10px 24px;
  border-radius: 999px;
  box-shadow: 0 0 0 4px rgba(38, 161, 123, 0.25), 0 10px 30px rgba(0, 0, 0, 0.4);
}

.logo-img {
  height: 36px;
  display: block;
  margin: 0;
}

/* ---------- Main card ---------- */
.container {
  position: relative;
  max-width: 680px;
  margin: 32px auto;
  padding: 44px 40px 40px;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45), 0 0 80px rgba(38, 161, 123, 0.12);
  overflow: hidden;
}

.container::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--tether-dark), var(--tether-light), var(--tether-dark));
}

h1 {
  margin: 0 0 28px;
  padding: 0;
  border: none;
  font-size: 30px;
  font-weight: 900;
  line-height: 1.25;
  text-align: center;
  color: #fff;
  letter-spacing: -0.3px;
}

h1::after {
  content: "";
  display: block;
  width: 64px;
  height: 4px;
  margin: 16px auto 0;
  border-radius: 4px;
  background: var(--tether);
}

/* ---------- Form ---------- */
label {
  display: block;
  margin-top: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--tether-light);
}

input[type="text"],
input[type="number"] {
  width: 100%;
  margin-top: 10px;
  padding: 16px 18px;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 15px;
  color: #fff;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(38, 161, 123, 0.4);
  border-radius: 14px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

input[type="text"]::placeholder,
input[type="number"]::placeholder {
  color: #6f9487;
}

input[type="text"]:focus,
input[type="number"]:focus {
  background: rgba(0, 0, 0, 0.5);
  border-color: var(--tether);
  box-shadow: 0 0 0 4px rgba(38, 161, 123, 0.25);
}

button {
  display: block;
  width: 100%;
  max-width: 100%;
  margin: 24px auto 0;
  padding: 16px 24px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #04120d;
  background: linear-gradient(135deg, var(--tether-light), var(--tether));
  border: none;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(38, 161, 123, 0.4);
  transition: transform 0.2s, box-shadow 0.2s, filter 0.2s;
}

button:hover {
  transform: translateY(-2px);
  filter: brightness(1.08);
  box-shadow: 0 14px 32px rgba(38, 161, 123, 0.55);
}

button:active {
  transform: translateY(0);
}

/* ---------- Result (if generated by JS) ---------- */
.result-box {
  margin-top: 24px;
  padding: 20px;
  font-size: 16px;
  text-align: center;
  color: var(--text);
  background: rgba(0, 0, 0, 0.3);
  border: 1px dashed var(--card-border);
  border-radius: 16px;
}

.result-box img,
.container canvas {
  max-width: 100%;
  padding: 12px;
  background: #fff;
  border-radius: 16px;
}

/* ---------- SEO text ---------- */
.seo-section {
  max-width: 680px;
  margin: 48px auto;
  padding: 28px 32px;
  line-height: 1.8;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.03);
  border-left: 4px solid var(--tether);
  border-radius: 0 18px 18px 0;
}

.seo-section h1,
.seo-section h2,
.seo-section h3 {
  margin-top: 30px;
  margin-bottom: 10px;
  color: #fff;
  font-weight: 700;
}

.seo-section p {
  margin: 0 0 20px;
}

.seo-section b {
  color: var(--tether-light);
  font-weight: 700;
}

/* ---------- Contact block ---------- */
.info-block {
  max-width: 680px;
  margin: 40px auto 60px;
  padding: 22px 28px;
  text-align: center;
  background: rgba(38, 161, 123, 0.08);
  border: 1px solid var(--card-border);
  border-radius: 18px;
}

.info-block .label {
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--tether-light);
}

.info-block .value p {
  margin: 6px 0;
  word-break: break-all;
}

.info-block a {
  color: #fff;
  text-decoration: none;
  border-bottom: 1px solid var(--tether);
  transition: color 0.2s;
}

.info-block a:hover {
  color: var(--tether-light);
}

.footer {
  max-width: 680px;
  margin: 60px auto 30px;
  font-size: 14px;
  text-align: center;
  color: var(--muted);
}

/* ---------- Mobile ---------- */
@media (max-width: 600px) {
  .container {
    margin: 20px 14px;
    padding: 32px 20px 28px;
    border-radius: 20px;
  }
  h1 { font-size: 24px; }
  .seo-section {
    margin: 32px 14px;
    padding: 22px 20px;
  }
  .info-block { margin: 32px 14px 48px; }
}