/* General Body Styles */
:root {
  --primary-font: 'Poppins', 'Noto Sans KR', sans-serif;
  
  /* Light Mode (Default) */
  --bg-color: #f0f2f5;
  --bg-gradient-1: radial-gradient(at 47% 33%, #e0eafc 0, transparent 59%);
  --bg-gradient-2: radial-gradient(at 82% 65%, #cfdef3 0, transparent 55%);
  --text-color: #2d3436;
  --card-bg: rgba(255, 255, 255, 0.8);
  --card-border: rgba(0, 0, 0, 0.1);
  --card-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
  --subtitle-color: #636e72;
  --title-color: #2d3436;
  --input-bg: rgba(255, 255, 255, 0.9);
}

body.dark-mode {
  /* Dark Mode */
  --bg-color: #0f172a;
  --bg-gradient-1: radial-gradient(at 47% 33%, #1e293b 0, transparent 59%);
  --bg-gradient-2: radial-gradient(at 82% 65%, #0f172a 0, transparent 55%);
  --text-color: #f8fafc;
  --card-bg: rgba(30, 41, 59, 0.7);
  --card-border: rgba(255, 255, 255, 0.1);
  --card-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
  --subtitle-color: #cbd5e1;
  --title-color: #ffffff;
  --input-bg: rgba(15, 23, 42, 0.6);
}

body {
  font-family: var(--primary-font);
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  background-color: var(--bg-color);
  background-image: var(--bg-gradient-1), var(--bg-gradient-2);
  background-attachment: fixed;
  color: var(--text-color);
  transition: background-color 0.3s ease, color 0.3s ease;
  padding: 80px 20px 40px;
}

.controls-container {
  position: fixed;
  top: 20px;
  right: 20px;
  display: flex;
  gap: 10px;
  z-index: 1000;
}

.theme-toggle, .lang-link {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  color: var(--text-color);
  padding: 10px 15px;
  border-radius: 20px;
  cursor: pointer;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: var(--card-shadow);
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  backdrop-filter: blur(10px);
}

.theme-toggle:hover, .lang-link:hover {
  transform: translateY(-2px);
}

main {
  width: 100%;
  max-width: 500px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

/* Section Common Styles */
.comment-section, .contact-section {
  background: var(--card-bg);
  border-radius: 30px;
  padding: 2.5rem;
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
}

.comment-section h3, .contact-section h3 {
  margin-top: 0;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  color: var(--title-color);
  text-align: center;
}

/* Contact Section Specific */
.contact-section p {
  color: var(--subtitle-color);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  text-align: center;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.form-group input, .form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: 12px;
  border: 1px solid var(--card-border);
  background: var(--input-bg);
  color: var(--text-color);
  font-family: inherit;
  font-size: 0.95rem;
  box-sizing: border-box;
  transition: all 0.3s ease;
}

.form-group textarea {
  height: 100px;
  resize: none;
}

.form-group input:focus, .form-group textarea:focus {
  outline: none;
  border-color: #6e8efb;
  box-shadow: 0 0 0 3px rgba(110, 142, 251, 0.2);
}

.submit-btn {
  background: linear-gradient(135deg, #6e8efb, #a777e3);
  color: white;
  border: none;
  padding: 14px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 8px;
}

.submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(110, 142, 251, 0.4);
}

/* Disqus Customization */
#disqus_thread {
  width: 100%;
}