/* ========== CSS VARIABLES ========== */
:root {
  --bg-color: #f9f9f9;
  --text-color: #222;
  --primary-color: #4a90e2;
  --secondary-color: #2b6cb0;
  --accent-color: #2b6cb0;
  --border-color: #ddd;
  --input-bg: #fff;
  --input-border: #ccc;
  --success-color: #2ecc71;
  --bg-summary: #eef6ff;

  --font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  --transition-speed: 0.5s;
}

/* ========== GLOBAL STYLES ========== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-color);
  padding: 2rem;
  line-height: 1.6;
}

/* ========== MAIN CONTAINER ========== */
main {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

/* ========== FORM HEADER ========== */

.form-header {
  background: var(--primary-color);
  color: white;
  padding: 30px;
  text-align: center;
  position: relative;
  border-radius: 15px 15px 0 0;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  width: 100%;
  max-width: 800px;
}

.logo {
  width: 70px;
  height: 70px;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto 15px;
  font-size: 30px;
}

.form-header h1 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 5px;
}

.form-header p {
  font-size: 14px;
  opacity: 0.9;
}

/* ========== FORM CONTAINER ========== */
form {
  background: #fff;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

fieldset {
  border: 1px solid var(--border-color);
  padding: 1rem;
  border-radius: 5px;
}
fieldset,
.responsive-container {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
}

legend {
  padding: 0 0.5rem;
  font-weight: bold;
  color: var(--accent-color);
}

.form-group {
  display: flex;
  flex-direction: column;
  flex: 1;
}

label {
  margin-bottom: 0.5rem;
  font-weight: 500;
}

input,
select {
  padding: 0.6rem;
  border: 1px solid var(--input-border);
  border-radius: 5px;
  background-color: var(--input-bg);
  transition: border var(--transition-speed), box-shadow var(--transition-speed);
}

input:focus,
select:focus {
  border-color: var(--primary-color);
  outline: none;
  box-shadow: 0 0 4px rgba(74, 144, 226, 0.6);
}

/* ========== BUTTONS ========== */
.form-actions {
  display: flex;
  gap: 1rem;
  justify-content: space-between;
  flex-wrap: wrap;
}

button {
  background-color: var(--primary-color);
  color: #fff;
  padding: 0.7rem 1.2rem;
  border: none;
  border-radius: 5px;
  font-weight: bold;
  cursor: pointer;
  transition: background-color var(--transition-speed);
  flex: 1;
}

button:hover {
  background-color: var(--accent-color);
}

.info-text {
  margin-top: 0.5rem;
  font-style: italic;
  color: var(--success-color);
}

/* ========== OUTPUT SECTION ========== */
.output-section {
  width: 100%;
  max-width: 800px;
  margin: 2rem auto;
  background-color: var(--bg-summary);
  padding: 1.5rem;
  border-radius: 8px;
  border-left: 5px solid var(--primary-color);
}

.output-section h2 {
  margin-bottom: 1rem;
  color: var(--primary-color);
}

pre {
  white-space: pre-wrap;
  word-break: break-word;
}

.hidden {
  display: none;
}

/* ========== RESPONSIVE DESIGN ========== */
@media (max-width: 600px) {
  form {
    padding: 1rem;
  }

  .form-actions {
    flex-direction: column;
  }
  .form-header h1 {
    font-size: 18px;
  }
  .form-header p {
    font-size: 12px;
  }
  body {
    padding: 1rem;
  }
}

@media (max-width: 768px) {
  .form-group {
    flex-direction: column;
    gap: 15px;
  }
}