/* Style Variables for Premium Theme */
:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #121826;
  --bg-tertiary: #1a2236;
  --bg-accent: #252e48;
  --border-color: #2e3b5e;
  --border-glow: rgba(79, 110, 242, 0.2);
  
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --color-primary: #4f6ef2;
  --color-primary-hover: #6380f5;
  --color-success: #10b981;
  --color-success-hover: #34d399;
  --color-error: #ef4444;
  --color-warning: #f59e0b;
  
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'Fira Code', monospace;
  
  --shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.4);
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
}

.hidden {
  display: none !important;
}

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

@keyframes pulseGlow {
  0% { box-shadow: 0 0 5px rgba(79, 110, 242, 0.2); }
  50% { box-shadow: 0 0 15px rgba(79, 110, 242, 0.5); }
  100% { box-shadow: 0 0 5px rgba(79, 110, 242, 0.2); }
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-accent);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--border-color);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  outline: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
}
.btn-primary:hover {
  background-color: var(--color-primary-hover);
  box-shadow: 0 0 10px var(--border-glow);
}

.btn-secondary {
  background-color: var(--bg-accent);
  border-color: var(--border-color);
  color: var(--text-primary);
}
.btn-secondary:hover {
  background-color: var(--bg-tertiary);
  border-color: var(--color-primary);
}

.btn-success {
  background-color: var(--color-success);
  color: white;
}
.btn-success:hover {
  background-color: var(--color-success-hover);
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.3);
}

.btn-block {
  width: 100%;
  justify-content: center;
}

/* Login Layout */
.login-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  background: radial-gradient(circle at center, #1b253b 0%, #0b0f19 70%);
}

.login-card {
  width: 100%;
  max-width: 420px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-lg);
  animation: fadeIn 0.4s ease-out;
}

.login-header {
  text-align: center;
  margin-bottom: 28px;
}

.logo-icon {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background-color: rgba(79, 110, 242, 0.1);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px auto;
  border: 1px solid var(--border-glow);
}

.login-header h2 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #ffffff 0%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.login-header p {
  color: var(--text-secondary);
  font-size: 13px;
}

.login-form .input-group {
  margin-bottom: 18px;
}

.login-form label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

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

.input-field i {
  position: absolute;
  left: 12px;
  color: var(--text-muted);
  width: 18px;
  height: 18px;
}

.input-field input {
  width: 100%;
  padding: 10px 12px 10px 40px;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 14px;
  transition: all 0.2s ease;
}

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

.login-error {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-error);
  font-size: 13px;
  margin-bottom: 16px;
  background-color: rgba(239, 68, 68, 0.1);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.login-footer {
  text-align: center;
  margin-top: 24px;
  font-size: 11px;
  color: var(--text-muted);
}

/* App Main Layout */
.app-layout {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

.app-header {
  height: 64px;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  flex-shrink: 0;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-circle {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
}

.header-logo h1 {
  font-size: 16px;
  font-weight: 600;
}

.version-tag {
  font-size: 11px;
  color: var(--text-secondary);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.compiler-selector {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.compiler-selector select {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: var(--radius-md);
  outline: none;
  font-size: 13px;
  cursor: pointer;
}

.compiler-selector select:focus {
  border-color: var(--color-primary);
}

/* Workspace Panels */
.workspace {
  display: flex;
  flex: 1;
  overflow: hidden;
  height: calc(100vh - 64px);
}

/* Sidebar Templates */
.workspace-sidebar {
  width: 260px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-section-title {
  padding: 18px 20px 8px 20px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.template-list {
  list-style: none;
  padding: 8px 12px;
  flex: 1;
  overflow-y: auto;
}

.template-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-bottom: 4px;
}

.template-item:hover {
  background-color: var(--bg-accent);
  color: var(--text-primary);
}

.template-item.active {
  background-color: rgba(79, 110, 242, 0.15);
  color: var(--text-primary);
  border-left: 3px solid var(--color-primary);
}

.template-item i {
  width: 16px;
  height: 16px;
}

.sidebar-help {
  padding: 20px;
  border-top: 1px solid var(--border-color);
}

.help-card {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 12px;
}

.help-card h4 {
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.help-card p {
  font-size: 11px;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Editor Area Layout */
.editor-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  overflow: hidden;
}

.editor-header {
  height: 48px;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  flex-shrink: 0;
}

.editor-file-info {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
}

.text-primary {
  color: var(--color-primary);
}

/* Editor component */
.code-editor-container {
  flex: 1;
  display: flex;
  background-color: var(--bg-primary);
  font-family: var(--font-mono);
  font-size: 14px;
  overflow: hidden;
  position: relative;
}

.line-numbers {
  width: 48px;
  text-align: right;
  padding: 16px 12px;
  color: var(--text-muted);
  user-select: none;
  background-color: #080c14;
  border-right: 1px solid var(--border-color);
  line-height: 1.5;
}

#code-editor {
  flex: 1;
  background-color: transparent;
  border: none;
  color: #e2e8f0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  padding: 16px;
  resize: none;
  outline: none;
  overflow-y: auto;
  white-space: pre;
}

/* Console Panel Layout */
.console-panel {
  height: 280px;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.console-header {
  height: 40px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  background-color: #0c111c;
}

.console-tabs {
  display: flex;
  gap: 4px;
}

.console-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  transition: all 0.2s ease;
}

.console-tab-btn:hover {
  color: var(--text-primary);
  background-color: var(--bg-primary);
}

.console-tab-btn.active {
  color: var(--color-primary);
  background-color: var(--bg-primary);
  border-bottom: 2px solid var(--color-primary);
}

.console-status {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 6px;
}

.console-body {
  flex: 1;
  position: relative;
  overflow: hidden;
  background-color: #080c14;
}

.tab-content {
  display: none;
  width: 100%;
  height: 100%;
  padding: 16px;
}

.tab-content.active-content {
  display: block;
}

#console-output {
  width: 100%;
  height: 100%;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  color: #cbd5e1;
  white-space: pre-wrap;
  word-break: break-all;
}

#console-stdin {
  width: 100%;
  height: 100%;
  background-color: transparent;
  border: none;
  color: #e2e8f0;
  font-family: var(--font-mono);
  font-size: 13px;
  resize: none;
  outline: none;
}

.console-footer {
  height: 32px;
  border-top: 1px solid var(--border-color);
  background-color: #0c111c;
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 0 16px;
}

.stat-item {
  font-size: 11px;
  display: flex;
  gap: 6px;
}

.stat-label {
  color: var(--text-muted);
}

.stat-val {
  color: var(--text-secondary);
  font-weight: 600;
}