/* style.css - Boundary X: Final Modern Mono Tech (Responsive Updated) */

:root {
  /* Palette */
  --primary: #000000;       
  --primary-hover: #333333; 
  --accent-grey: #F8F9FA;   
  --border-color: #D1D5DB;  
  
  --bg-color: #FFFFFF;      
  --text-main: #111111;     
  --text-sub: #666666;      
  
  --danger: #EA4335;        
  --success: #137333;       
  
  /* Shapes */
  --radius-pill: 50px;      
  --radius-card: 16px;      
  
  --font-family: 'Pretendard', -apple-system, sans-serif;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: var(--font-family);
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

header {
  background: #000000;
  border-bottom: 1px solid #333;
  padding: 1rem 5vw;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  transition: padding 0.3s ease;
}

.title {
  font-size: 1.25rem;
  font-weight: 700;
  color: #FFFFFF;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: font-size 0.3s ease;
}

.title img {
  height: 28px;
  width: auto;
  transition: height 0.3s ease;
}

.back-button {
  text-decoration: none;
  color: #FFFFFF;
  border: 1px solid #FFFFFF;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-pill);
  transition: all 0.2s;
}

.back-button:hover {
  background: #FFFFFF;
  color: #000000;
}

main {
  width: 100%;
  max-width: 840px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
  flex: 1;
}

.canvas-container, canvas { display: none; }

.controls {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.control-group {
  background: var(--accent-grey);
  padding: 2.5rem;
  border-radius: var(--radius-card);
  border: 1px solid var(--border-color);
}

.control-group h3 {
  background: transparent;
  color: #000000;
  border-left: 6px solid #000000;
  padding-left: 1rem;
  font-size: 1.3rem;
  font-weight: 800; 
  margin-bottom: 1rem;
  line-height: 1.1;
  display: flex;
  align-items: center;
}

.control-group p {
  color: var(--text-sub);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.button-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

button {
  cursor: pointer;
  border: none;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.9rem 1.5rem;
  border-radius: var(--radius-pill);
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.start-button {
  background-color: var(--primary);
  color: white;
}
.start-button:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
}

#bluetooth-control-buttons button {
  min-width: 200px;
  flex: 1;
}

.stop-button {
  background-color: white;
  color: var(--danger);
  border: 1px solid var(--border-color);
}
.stop-button:hover {
  background-color: #FFF5F5;
  border-color: var(--danger);
}

.excel-button {
  background-color: transparent;
  color: #000000;
  border: 1px solid #000000;
}
.excel-button:hover {
  background-color: #333333;
  color: #FFFFFF;
  border-color: #333333;
}

input {
  width: 100%;
  padding: 0.9rem 1.2rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  font-size: 1rem;
  background: #FFFFFF;
  color: var(--text-main);
  outline: none;
}
input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 2px rgba(0,0,0,0.1);
}

#bluetoothStatus {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: var(--radius-card);
  font-size: 1rem;
  text-align: center;
  font-weight: 700;
  background-color: #F1F3F4;
  color: #333;
  border: 1px solid var(--border-color);
  transition: background-color 0.3s, color 0.3s;
}

.status-connected {
  background-color: #E6F4EA !important;
  color: var(--success) !important;
  border-color: var(--success) !important;
}

.status-error {
  background-color: #FCE8E6 !important;
  color: var(--danger) !important;
  border-color: var(--danger) !important;
}

#recognitionStatus, #recognitionResult, #sentDataDisplay {
  margin-top: 1rem;
  padding: 1rem;
  border-radius: var(--radius-card);
  font-size: 0.95rem;
  text-align: center;
  font-weight: 500;
}

#recognitionStatus {
  background: none;
  color: var(--text-sub);
}

#recognitionResult, #sentDataDisplay {
  background-color: #FFFFFF;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

#command-table-container {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  background: white;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th {
  background: #F1F3F4;
  color: #333;
  font-weight: 700;
  text-align: left;
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
}
tr:last-child td { border-bottom: none; }

#user-command-ui {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}
#user-command-ui input { flex: 2; }
#user-command-ui button { flex: 1; min-width: 100px; }

#voice-recognition-ui {
  display: flex;
  justify-content: center;
  padding: 2rem 0;
}

.mic-button {
  width: 120px !important;
  height: 120px !important;
  border-radius: 50% !important;
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
  display: flex;
  justify-content: center;
  align-items: center;
}

.mic-button:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}

.mic-button.active {
  background: var(--danger);
  transform: scale(1.1);
  box-shadow: 0 0 0 8px rgba(234, 67, 53, 0.2);
}

.mic-button svg { 
  width: 48px; 
  height: 48px; 
  fill: white; 
}

footer {
  background-color: #000000;
  color: #FFFFFF;
  padding: 4rem 5vw 4rem;
  border-top: 1px solid #222;
  margin-top: auto;
  font-size: 0.9rem;
}

.footer-container {
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 4rem;
}

.footer-info {
  flex: 1;
  min-width: 280px;
  display: flex;
  flex-direction: column;
}

.footer-logo {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: #FFFFFF;
}

.slogan {
  font-size: 0.95rem;
  color: #CCCCCC;
  font-weight: 400;
  font-style: normal; 
  margin-bottom: 1.5rem;
  line-height: 1.5;
  word-break: keep-all;
}

address {
  font-style: normal;
  color: #888;
  line-height: 1.6;
}

.copyright {
  margin-top: 0.8rem;
  font-size: 0.8rem;
  color: #666;
}

.footer-links {
  display: flex;
  gap: 4rem;
  flex-wrap: wrap;
}

.link-column h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 1.2rem;
}

.link-column ul {
  list-style: none;
  padding: 0;
}

.link-column li {
  margin-bottom: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.link-column a {
  text-decoration: none;
  color: #CCCCCC;
  font-weight: 500;
  transition: color 0.2s;
}

.link-column a:hover {
  color: #FFFFFF;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.link-desc {
  font-size: 0.8rem;
  color: #666;
}

@media (max-width: 768px) {
  .footer-top {
    flex-direction: column;
    gap: 3rem;
  }
  .footer-links {
    gap: 2.5rem;
    flex-direction: column;
  }

  header {
    padding: 0.8rem 1rem;
  }
  
  .title {
    font-size: 1rem; 
  }
  
  .title img {
    height: 20px; 
  }
  
  .back-button {
    font-size: 0.8rem;
    padding: 0.4rem 0.8rem;
  }

  #user-command-ui {
    flex-direction: column; 
    gap: 10px;
  }

  #user-command-ui input,
  #user-command-ui button {
    width: 100%; 
    flex: none;  
  }

  .excel-button {
    width: 100%;
    margin-top: 5px;
  }
}