:root {
  --bg: #071026;
  --card: #081622;
  --accent: #7dd3fc;
  --accent-hover: #5bb8e6;
  --muted: #9fb3c8;
  --warn-bg: rgba(255, 80, 80, 0.12);
  --warn-color: #ff6b6b;
  --text-color: #e6f3fb;
  --input-bg: rgba(255, 255, 255, 0.05);
  --input-border: rgba(255, 255, 255, 0.15);
  --shadow-light: rgba(125, 211, 252, 0.3);
  --shadow-dark: rgba(0, 0, 0, 0.4);
  --font-family: 'Inter', system-ui, 'Segoe UI', Roboto, Arial, sans-serif;
}

* {
  box-sizing: border-box;
  transition: all 0.3s ease;
}

body {
  margin: 0;
  font-family: var(--font-family);
  background: linear-gradient(180deg, var(--bg), #052033, #e6f3fb,#7dd3fc);
  color: var(--text-color);
  padding: 20px;
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;

  /* Add these two lines */
  background-size: 200% 200%;
  animation: gradientAnimation 15s ease infinite;
}

@keyframes gradientAnimation {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.card {
  max-width: 880px;
  width: 100%;
  margin: 18px auto;
  padding: 30px 40px;
  border-radius: 16px;

  /* একটি সলিড এবং খুবই গাঢ় নীল রঙ */
  background: #0A1929;

  /* ডার্ক থিমের জন্য একটি মানানসই বর্ডার */
  border: 1px solid rgba(125, 211, 252, 0.2);

  /* একটি গভীর কালো শ্যাডো এবং হালকা নীল আভা */
  box-shadow:
    0 4px 20px rgba(0, 0, 0, 0.5),
    0 0 5px rgba(125, 211, 252, 0.1);
  
  display: flex;
  flex-direction: column;
  gap: 20px;
}

h1 {
  margin: 0 0 15px;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--accent);
  text-align: center;
}

label {
  display: block;
  margin-top: 15px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

input[type="text"],
input[type="password"],
input[type="date"] {
  width: 100%;
  padding: 12px 15px;
  border-radius: 10px;
  border: 1.5px solid var(--input-border);
  background: var(--input-bg);
  color: var(--text-color);
  font-size: 16px;
  font-weight: 500;
  outline-offset: 2px;
  outline-color: transparent;
  box-shadow: inset 0 0 6px rgba(255, 255, 255, 0.1);
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="date"]:focus {
  border-color: var(--accent);
  background: rgba(125, 211, 252, 0.1);
  outline-color: var(--accent);
  box-shadow: 0 0 8px var(--accent);
}

.controls {
  display: flex;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
  justify-content: center;
}

button {
  padding: 12px 20px;
  border-radius: 12px;
  border: none;
  background: var(--accent);
  color: #013033;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.3s ease, box-shadow 0.3s ease, transform 0.2s ease;
  flex: 1 1 150px;
  max-width: 220px;
  text-align: center;
}

button:hover,
button:focus {
  background: var(--accent-hover);
  transform: translateY(-3px);
  outline: none;
}

button:active {
  transform: translateY(-1px);
  box-shadow: 0 3px 10px rgba(93, 184, 230, 0.5);
}

.results {
  margin-top: 25px;
  background: rgba(255, 255, 255, 0.05);
  padding: 20px 25px;
  border-radius: 14px;
  box-shadow: inset 0 0 10px rgba(125, 211, 252, 0.15);
  color: var(--text-color);
  font-size: 16px;
  line-height: 1.5;
  min-height: 120px;
}

.results h2 {
  margin-top: 0;
  font-weight: 700;
  color: var(--accent);
  font-size: 22px;
  margin-bottom: 12px;
}

.warn {
  background: var(--warn-bg);
  padding: 12px 15px;
  border-radius: 12px;
  color: var(--warn-color);
  font-weight: 600;
  box-shadow: 0 0 8px var(--warn-color);
  margin-bottom: 12px;
  user-select: none;
}

.generated {
  margin-top: 25px;
  background: rgba(255, 255, 255, 0.07);
  padding: 20px 25px;
  border-radius: 14px;
  box-shadow: inset 0 0 12px rgba(125, 211, 252, 0.2);
  font-size: 16px;
  color: var(--text-color);
  user-select: text;
}

.generated h2 {
  margin-top: 0;
  font-weight: 700;
  color: var(--accent);
  font-size: 22px;
  margin-bottom: 12px;
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
  font-family: 'Courier New', Courier, monospace;
  font-size: 18px;
  background: rgba(0, 0, 0, 0.15);
  padding: 15px 20px;
  border-radius: 12px;
  box-shadow: inset 0 0 8px rgba(0, 0, 0, 0.3);
  user-select: all;
  transition: background-color 0.3s ease;
}

pre:hover {
  background-color: rgba(0, 0, 0, 0.25);
}

.gen-actions {
  margin-top: 12px;
  text-align: right;
}

.gen-actions button {
  background: transparent;
  color: var(--accent);
  border: 2px solid var(--accent);
  padding: 8px 16px;
  font-weight: 600;
  font-size: 15px;
  border-radius: 10px;
  box-shadow: none;
  transition: background-color 0.3s ease, color 0.3s ease, box-shadow 0.3s ease;
  cursor: pointer;
  max-width: 120px;
}

.gen-actions button:hover,
.gen-actions button:focus {
  background-color: var(--accent);
  color: #013033;
  box-shadow: 0 4px 12px var(--shadow-light);
  outline: none;
  transform: translateY(-2px);
}

.gen-actions button:active {
  transform: translateY(0);
  box-shadow: none;
}

footer {
  margin-top: 30px;
  color: var(--muted);
  font-size: 14px;
  text-align: center;
  user-select: none;
  letter-spacing: 0.05em;
}

/* Responsive adjustments */
@media (min-width: 700px) {
  .controls {
    justify-content: flex-start;
  }
  button {
    flex: 0 0 auto;
  }
}