/* --- Base & Variables --- */
:root {
  --primary-color: #00aaff;
  --secondary-color: #0077cc;
  --background-color: #121418;
  --container-background: #1a1d23;
  --text-color: #e0e0e0;
  --text-color-secondary: #a0a0a0;
  --border-color: #3a3f4b;
  --border-radius: 0.5rem;
  --font-sans: 'Roboto', sans-serif;
  --shadow-color: rgba(0, 0, 0, 0.5);
  --primary-glow: rgba(0, 170, 255, 0.2);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- General --- */
* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-sans);
  background-color: var(--background-color);
  color: var(--text-color);
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* --- Header & Footer --- */
header {
  position: relative; /* Needed for absolute positioning of language switcher */
  display: flex; /* Make header a flex container */
  justify-content: center; /* Center the h1 */
  align-items: center; /* Vertically align items */
  padding: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

header h1 {
  margin: 0;
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-color);
}

.language-switcher {
  position: absolute;
  right: 1.5rem; /* Position to the right */
  top: 50%;
  transform: translateY(-50%); /* Vertically center */
}

#language-select {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background-color: var(--container-background);
  color: var(--text-color);
  font-size: 0.9rem;
  cursor: pointer;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

#language-select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

footer {
  text-align: center;
  padding: 1.5rem;
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  color: var(--text-color-secondary);
  font-size: 0.9rem;
}

/* --- Main Layout --- */
.main-content {
  flex-grow: 1;
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* --- QR Generator Container --- */
.container {
  background-color: var(--container-background);
  padding: 2rem 2.5rem;
  border-radius: var(--border-radius);
  box-shadow: 0 10px 30px var(--shadow-color);
  border: 1px solid var(--border-color);
  text-align: center;
  width: 100%;
  max-width: 600px;
  margin: 0 auto;
}

/* --- Form Elements --- */
input[type="text"],
input[type="password"],
input[type="email"],
input[type="tel"],
input[type="datetime-local"],
select,
textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  margin-bottom: 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background-color: #2c2c2c;
  color: var(--text-color);
  font-size: 1rem;
  transition: all 0.2s ease-in-out;
  -webkit-appearance: none;
   -moz-appearance: none;
        appearance: none;
}

textarea {
  resize: vertical;
  min-height: 80px;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.input-group {
  margin-bottom: 1.25rem;
  text-align: left;
  position: relative;
}

.input-group label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text-color-secondary);
  font-size: 0.9rem;
  font-weight: 400;
}

.input-group select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23bbb' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1em;
}

.customization-group h3 {
  margin-bottom: 1rem;
  font-size: 1.2rem;
  color: var(--text-color-secondary);
  text-align: left;
}

.color-picker {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.color-picker label {
  color: var(--text-color-secondary);
  font-size: 0.9rem;
}

input[type="color"] {
  -webkit-appearance: none; -moz-appearance: none; appearance: none;
  width: 40px; height: 40px;
  background-color: transparent;
  border: 1px solid var(--border-color);
  border-radius: 50%;
  cursor: pointer;
}
input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; border-radius: 50%; }
input[type="color"]::-webkit-color-swatch { border: none; border-radius: 50%; }

/* --- Buttons --- */
button#generate-button {
  width: 100%;
  padding: 0.85rem 1rem;
  border: none;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  color: #fff;
  font-weight: bold;
  cursor: pointer;
  border-radius: var(--border-radius);
  font-size: 1.1rem;
  transition: all 0.3s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 1rem;
}

button#generate-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px var(--primary-glow);
}

#download-buttons {
  display: none;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.5rem;
  animation: fadeIn 0.5s 0.2s ease-out both;
}

#download-buttons button {
  width: auto;
  padding: 0.6rem 1.2rem;
  background-color: #3a3a3a;
  color: var(--text-color);
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
  font-size: 0.9rem;
}

#download-buttons button:hover {
  background-color: #4a4a4a;
  border-color: #777;
  transform: translateY(-1px);
}

#download-buttons button .fas {
  margin-right: 0.5rem;
}

/* --- QR Code Display --- */
#qrcode {
  margin: 2rem auto 1.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #fff;
  padding: 1rem;
  border-radius: var(--border-radius);
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
  min-height: 200px;
}
#qrcode.generated { animation: fadeIn 0.5s ease-out; }
#qrcode canvas {
  display: block;
  border-radius: calc(var(--border-radius) - 8px);
  width: 100% !important;
  height: 100% !important;
  image-rendering: pixelated;
}

/* --- Descriptions Section --- */
.descriptions-container {
  width: 100%;
  max-width: 800px;
  margin: 3rem auto;
  animation: fadeIn 0.5s 0.3s ease-out both;
}

.descriptions-container h2 {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 1.8rem;
  color: var(--primary-color);
}

.description-card {
  background-color: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  transition: all 0.3s ease;
}

.description-card:hover {
  transform: translateY(-3px);
  border-color: var(--primary-color);
  background-color: rgba(44, 52, 69, 0.3);
}

.description-card h3 {
  margin: 0 0 0.75rem 0;
  font-size: 1.2rem;
  color: var(--text-color);
}

.description-card h3 .fas {
  margin-right: 0.75rem;
  color: var(--primary-color);
  width: 20px;
  text-align: center;
}

.description-card p {
  margin: 0.25rem 0;
  line-height: 1.6;
  font-size: 0.95rem;
  color: var(--text-color-secondary);
}

.description-card p strong {
  color: var(--text-color);
}

/* --- Footer Links --- */
footer .footer-links {
  margin-top: 0.5rem;
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  font-size: 0.85rem;
}

footer .footer-links a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color 0.2s ease;
}

footer .footer-links a:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

footer .footer-separator {
  color: var(--text-color-secondary);
}

/* --- General Page Content (for privacy/contact pages) --- */
.main-content .container h2 {
  font-size: 1.8rem;
  color: var(--primary-color);
  margin-bottom: 1.5rem;
}

.main-content .container h3 {
  font-size: 1.4rem;
  color: var(--text-color);
  margin-top: 2rem;
  margin-bottom: 1rem;
  text-align: left;
}

.main-content .container p {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-color-secondary);
  margin-bottom: 1rem;
  text-align: left;
}

.main-content .container p a {
  color: var(--primary-color);
  text-decoration: none;
}

.main-content .container p a:hover {
  text-decoration: underline;
}

/* Contact Form Specifics */
#contact-form {
  margin-top: 2rem;
  padding: 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background-color: #24272e;
}

#contact-form .input-group label {
  font-size: 1rem;
  color: var(--text-color);
  margin-bottom: 0.75rem;
}

#contact-form input[type="text"],
#contact-form input[type="email"],
#contact-form textarea {
  background-color: #1e2025;
  border-color: #444;
}

#contact-form button[type="submit"] {
  width: auto;
  padding: 0.75rem 1.5rem;
  margin-top: 1.5rem;
  font-size: 1rem;
  background: linear-gradient(45deg, var(--secondary-color), var(--primary-color));
}

#contact-form button[type="submit"]:hover {
  box-shadow: 0 4px 15px var(--primary-glow);
  transform: translateY(-2px);
}