@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Fira+Code:wght@400;500&display=swap');

:root {
  /* Colors */
  --bg-color: #0d0d12;
  --bg-gradient: radial-gradient(circle at top left, #1a162b, #0d0d12 40%, #0d0d12 100%);
  --accent: #8b5cf6;
  --accent-hover: #7c3aed;
  --accent-glow: rgba(139, 92, 246, 0.4);
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --danger: #ef4444;
  --success: #10b981;
  
  /* Glassmorphism */
  --glass-bg: rgba(30, 30, 35, 0.4);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --blur: blur(12px);

  /* Layout */
  --sidebar-width: 260px;
  --radius: 12px;
  --radius-sm: 8px;

  /* Typography */
  --font-main: 'Inter', sans-serif;
  --font-mono: 'Fira Code', monospace;
}

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

body {
  font-family: var(--font-main);
  background: var(--bg-gradient);
  background-color: var(--bg-color);
  color: var(--text-main);
  height: 100vh;
  overflow: hidden;
  display: flex;
}

/* Glass panel utility */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius);
}

/* Base Buttons */
button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: var(--text-main);
  transition: all 0.2s ease;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-weight: 500;
}
.btn-primary:hover {
  background: var(--accent-hover);
  box-shadow: 0 0 10px var(--accent-glow);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.1);
}

/* Inputs */
input, textarea, select {
  font-family: inherit;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  outline: none;
  transition: border-color 0.2s;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
}
input::placeholder, textarea::placeholder {
  color: var(--text-muted);
}

/* Layout Core */
#app-container {
  display: flex;
  width: 100vw;
  height: 100vh;
}

#main-content {
  flex: 1;
  position: relative;
  overflow: hidden;
}

/* SPA Pages */
.page {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none;
  flex-direction: column;
  padding: 24px;
  overflow-x: hidden;
}

.page.active {
  display: flex;
  animation: fadeIn 0.3s ease;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* Loader / Toast */
#toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--glass-bg);
  backdrop-filter: var(--blur);
  border: 1px solid var(--glass-border);
  padding: 12px 20px;
  border-radius: var(--radius-sm);
  z-index: 10000;
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px);
  transition: all 0.3s cubic-bezier(0.18, 0.89, 0.32, 1.28);
}
#toast.show {
  opacity: 1;
  transform: translateY(0);
}