:root {
  /* Color System */
  --bg-primary: #0a0e17;
  --bg-secondary: #121824;
  --panel-bg: rgba(22, 30, 46, 0.65);
  --panel-border: rgba(255, 255, 255, 0.06);
  --border-focus: #00f2fe;
  
  --text-main: #f1f5f9;
  --text-muted: #94a3b8;
  --text-dark: #475569;
  
  /* Neon Status Colors */
  --accent-cyan: #00f2fe;
  --accent-purple: #4facfe;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #3b82f6;

  /* Font Family */
  --font-main: 'Noto Sans KR', 'Inter', sans-serif;
  --font-display: 'Outfit', sans-serif;
  
  /* Transitions */
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-neon: 0 0 20px rgba(0, 242, 254, 0.25);
  --shadow-card: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
  line-height: 1.6;
}

/* Glowing Background Orbs */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(150px);
  z-index: -1;
  opacity: 0.15;
  pointer-events: none;
}

.orb-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--accent-cyan) 0%, var(--accent-purple) 100%);
  top: -100px;
  right: -50px;
}

.orb-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #f43f5e 0%, #a855f7 100%);
  bottom: 100px;
  left: -100px;
}

/* Container */
.app-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

/* Header */
.app-header {
  margin-bottom: 2.5rem;
  text-align: center;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.logo h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 2.2rem;
  letter-spacing: 2px;
  background: linear-gradient(135deg, #ffffff 40%, var(--accent-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.logo h1 span {
  font-weight: 400;
  font-size: 1.8rem;
  color: var(--text-muted);
}

.neon-icon {
  font-size: 2.2rem;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 10px rgba(0, 242, 254, 0.4));
}

.subtitle {
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 300;
}

/* Workspace Grid Layout */
.workspace {
  display: grid;
  grid-template-columns: 350px 1fr 400px;
  gap: 1.5rem;
  align-items: start;
}

/* Glassmorphism Panel Common */
.panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  height: 820px; /* 고정 높이로 스크롤 관리 */
}

.panel:hover {
  border-color: rgba(255, 255, 255, 0.1);
}

.panel-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.panel-header i {
  color: var(--accent-cyan);
  font-size: 1.25rem;
  filter: drop-shadow(0 0 5px rgba(0, 242, 254, 0.3));
}

.panel-header h2 {
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.5px;
}

/* Inputs & Form */
.input-group {
  margin-bottom: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
}

.required {
  color: var(--color-danger);
}

.input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-icon i {
  position: absolute;
  left: 1rem;
  color: var(--text-dark);
  transition: var(--transition-smooth);
}

input[type="url"],
input[type="text"],
textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  background-color: rgba(10, 14, 23, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  color: var(--text-main);
  font-family: var(--font-main);
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

.input-with-icon input {
  padding-left: 2.75rem;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: var(--border-focus);
  background-color: rgba(10, 14, 23, 0.8);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.15);
}

input:focus + i {
  color: var(--accent-cyan);
}

input:disabled,
textarea:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.input-tip {
  font-size: 0.75rem;
  color: var(--text-dark);
}

/* Buttons */
.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.9rem 1.5rem;
  border-radius: 12px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: none;
  width: 100%;
  position: relative;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-purple) 100%);
  color: #000;
  box-shadow: var(--shadow-neon);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  filter: brightness(1.1);
  box-shadow: 0 0 25px rgba(0, 242, 254, 0.4);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Dividers */
.divider {
  border: 0;
  height: 1px;
  background: linear-gradient(to right, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0));
  margin: 1.5rem 0;
}

/* Info and Guides */
.guide-box {
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
  border-radius: 14px;
  padding: 1rem;
  margin-top: auto;
}

.guide-box h3 {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--accent-cyan);
}

.guide-box ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.guide-box li {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.guide-box li strong {
  color: var(--text-main);
}

/* Spinner */
.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(0, 0, 0, 0.2);
  border-top-color: #000;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  display: inline-block;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.hidden {
  display: none !important;
}

/* Editor Panel Styles */
.editor-panel {
  flex-grow: 1;
}

.editor-status {
  margin-left: auto;
  font-size: 0.75rem;
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border: 1px solid rgba(16, 185, 129, 0.2);
  padding: 0.25rem 0.6rem;
  border-radius: 20px;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 500;
}

.dot {
  width: 6px;
  height: 6px;
  background-color: var(--color-success);
  border-radius: 50%;
  display: inline-block;
}

.pulse {
  animation: pulse-animation 2s infinite;
}

@keyframes pulse-animation {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 6px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.editor-workspace {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.editor-workspace .input-group:last-child {
  flex-grow: 1;
  margin-bottom: 0;
}

#editor-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.char-counter {
  align-self: flex-end;
  font-size: 0.75rem;
  color: var(--text-dark);
  margin-top: 0.15rem;
}

.label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.25rem;
}

/* Toolbar */
.editor-toolbar {
  display: flex;
  gap: 0.35rem;
}

.tool-btn {
  background-color: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--text-muted);
  border-radius: 6px;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.tool-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text-main);
  border-color: var(--accent-cyan);
}

#editor-body {
  flex-grow: 1;
  resize: none;
  font-family: 'Consolas', 'Courier New', Courier, monospace;
  font-size: 0.85rem;
  line-height: 1.7;
  padding: 1.25rem;
  height: 100%;
}

.editor-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.03);
}

.metrics-row {
  display: flex;
  gap: 1rem;
}

.metric-item {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.metric-item strong {
  color: var(--text-main);
}

.status-msg {
  font-size: 0.8rem;
  color: var(--accent-purple);
}

.status-msg.error {
  color: var(--color-danger);
}

.status-msg.success {
  color: var(--color-success);
}

/* Report Panel Styles */
.report-panel {
  overflow: hidden;
}

.report-content {
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow-y: auto;
  padding-right: 0.25rem;
}

/* Custom Scrollbar for Report and Textarea */
.report-content::-webkit-scrollbar,
#editor-body::-webkit-scrollbar {
  width: 6px;
}

.report-content::-webkit-scrollbar-track,
#editor-body::-webkit-scrollbar-track {
  background: transparent;
}

.report-content::-webkit-scrollbar-thumb,
#editor-body::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 10px;
}

.report-content::-webkit-scrollbar-thumb:hover,
#editor-body::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Circular Score Gauge */
.score-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem 0 1.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  margin-bottom: 1.25rem;
}

.radial-progress {
  position: relative;
  width: 160px;
  height: 160px;
}

.progress-ring {
  transform: rotate(-90deg);
}

.progress-ring__circle {
  transition: stroke-dashoffset 0.35s;
  transform-origin: 50% 50%;
  filter: drop-shadow(0 0 8px var(--accent-color, #00f2fe));
}

.score-value {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  font-family: var(--font-display);
}

#score-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-main);
  text-shadow: 0 0 10px rgba(255,255,255,0.1);
}

.score-value .total {
  font-size: 0.95rem;
  color: var(--text-dark);
  font-weight: 600;
}

.score-grade {
  margin-top: 0.75rem;
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  padding: 0.25rem 1rem;
  border-radius: 30px;
  background-color: rgba(255, 255, 255, 0.02);
}

/* Score Grades coloring classes */
.grade-good {
  color: var(--color-success) !important;
  background-color: rgba(16, 185, 129, 0.1) !important;
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.1) inset;
}

.grade-warn {
  color: var(--color-warning) !important;
  background-color: rgba(245, 158, 11, 0.1) !important;
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.1) inset;
}

.grade-danger {
  color: var(--color-danger) !important;
  background-color: rgba(239, 68, 68, 0.1) !important;
  box-shadow: 0 0 15px rgba(239, 68, 68, 0.1) inset;
}

/* Checklist Cards Area */
.checklist-area h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.checklist-items {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card-item {
  background-color: rgba(255, 255, 255, 0.015);
  border: 1px solid rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 0.75rem 1rem;
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  transition: var(--transition-smooth);
}

.card-item:hover {
  background-color: rgba(255, 255, 255, 0.025);
  border-color: rgba(255, 255, 255, 0.06);
  transform: translateX(2px);
}

.check-status {
  font-size: 1.1rem;
  color: var(--text-dark);
  margin-top: 0.1rem;
  transition: var(--transition-smooth);
}

.check-details {
  flex-grow: 1;
}

.check-details h4 {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.15rem;
}

.check-details .desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.sub-metrics {
  margin-top: 0.4rem;
  font-size: 0.7rem;
  color: var(--text-dark);
  font-weight: 500;
}

.sub-metrics span {
  color: var(--text-muted);
}

/* Checklist states coloring */
.chk-pass {
  border-color: rgba(16, 185, 129, 0.2);
  background-color: rgba(16, 185, 129, 0.02);
}
.chk-pass .check-status {
  color: var(--color-success);
}
.chk-pass .sub-metrics span {
  color: var(--color-success);
}

.chk-warn {
  border-color: rgba(245, 158, 11, 0.2);
  background-color: rgba(245, 158, 11, 0.02);
}
.chk-warn .check-status {
  color: var(--color-warning);
}
.chk-warn .sub-metrics span {
  color: var(--color-warning);
}

.chk-fail {
  border-color: rgba(239, 68, 68, 0.2);
  background-color: rgba(239, 68, 68, 0.02);
}
.chk-fail .check-status {
  color: var(--color-danger);
}
.chk-fail .sub-metrics span {
  color: var(--color-danger);
}

/* Toast System */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 1000;
}

.toast {
  background: rgba(18, 24, 36, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  padding: 1rem 1.5rem;
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(0,0,0,0.4);
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 300px;
  animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  position: relative;
  overflow: hidden;
}

.toast::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 4px;
}

.toast-success::before { background-color: var(--color-success); }
.toast-success i { color: var(--color-success); }

.toast-warning::before { background-color: var(--color-warning); }
.toast-warning i { color: var(--color-warning); }

.toast-error::before { background-color: var(--color-danger); }
.toast-error i { color: var(--color-danger); }

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast.fade-out {
  animation: slideOut 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes slideOut {
  from {
    transform: translateX(0);
    opacity: 1;
  }
  to {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* Responsive Web Layout */
@media (max-width: 1400px) {
  .workspace {
    grid-template-columns: 1fr 1fr;
  }
  .control-panel {
    grid-column: span 2;
    height: auto;
  }
  .panel {
    height: 750px;
  }
}

@media (max-width: 900px) {
  .workspace {
    grid-template-columns: 1fr;
  }
  .control-panel,
  .editor-panel,
  .report-panel {
    grid-column: span 1;
    height: auto;
  }
  #editor-body {
    min-height: 400px;
  }
}