:root {
  --bg-color: #f0f2f5;
  --container-bg: #ffffff;
  --text-color: #333333;
  --button-bg: #4CAF50;
  --button-hover: #45a049;
  --card-shadow: rgba(0, 0, 0, 0.1);
  --img-placeholder: #eee;
  --input-bg: #ffffff;
  --input-border: #cccccc;
  --divider-color: #eeeeee;
}

[data-theme="dark"] {
  --bg-color: #18191a;
  --container-bg: #242526;
  --text-color: #e4e6eb;
  --button-bg: #2e7d32;
  --button-hover: #1b5e20;
  --card-shadow: rgba(0, 0, 0, 0.3);
  --img-placeholder: #3a3b3c;
  --input-bg: #3a3b3c;
  --input-border: #4a4b4c;
  --divider-color: #3a3b3c;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  margin: 0;
  padding: 40px 0;
  transition: background-color 0.3s, color 0.3s;
}

.theme-toggle {
  position: absolute;
  top: 20px;
  right: 20px;
}

#theme-btn {
  background-color: var(--container-bg);
  color: var(--text-color);
  border: 1px solid var(--text-color);
  padding: 8px 15px;
  font-size: 0.9rem;
  cursor: pointer;
  border-radius: 5px;
}

.container {
  text-align: center;
  background-color: var(--container-bg);
  padding: 2.5rem;
  border-radius: 15px;
  box-shadow: 0 4px 6px var(--card-shadow);
  max-width: 500px;
  width: 90%;
  transition: background-color 0.3s, box-shadow 0.3s;
}

h1, h2 {
  margin-bottom: 1.5rem;
}

#dog-container {
  width: 100%;
  height: 400px;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  border-radius: 10px;
  background-color: var(--img-placeholder);
  margin-bottom: 1.5rem;
  transition: background-color 0.3s;
}

#dog-container img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.divider {
  border: none;
  border-top: 1px solid var(--divider-color);
  margin: 2.5rem 0;
}

.partnership-section {
  text-align: left;
}

.partnership-section h2 {
  text-align: center;
}

.partnership-section p {
  text-align: center;
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  opacity: 0.8;
}

.inquiry-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.9rem;
  font-weight: 600;
}

.form-group input, .form-group textarea {
  padding: 10px;
  border-radius: 5px;
  border: 1px solid var(--input-border);
  background-color: var(--input-bg);
  color: var(--text-color);
  font-size: 1rem;
  transition: border-color 0.3s, background-color 0.3s;
}

.form-group textarea {
  min-height: 100px;
  resize: vertical;
}

.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--button-bg);
}

.submit-btn {
  margin-top: 1rem;
  width: 100%;
}

.button-group {
  display: flex;
  justify-content: center;
  gap: 10px;
}

button {
  background-color: var(--button-bg);
  color: white;
  border: none;
  padding: 12px 20px;
  font-size: 1rem;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s, transform 0.1s;
}

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

button:active {
  transform: scale(0.98);
}