:root {
  /* Colors */
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --primary-light: #e0e7ff;
  --secondary: #ec4899;
  --bg-color: #0f172a;
  --bg-panel: rgba(30, 41, 59, 0.7);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border: rgba(255, 255, 255, 0.1);
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  
  /* Typos */
  --font-family: 'Inter', sans-serif;
  
  /* Effects */
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --glass-bg: rgba(30, 41, 59, 0.85);
  --glass-border: 1px solid rgba(255, 255, 255, 0.08);
  --glass-blur: blur(12px);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-family);
  background: var(--bg-color);
  color: var(--text-main);
  min-height: 100vh;
  margin: 0;
  display: flex;
  background-image: 
    radial-gradient(at 0% 0%, rgba(79, 70, 229, 0.15) 0px, transparent 50%),
    radial-gradient(at 100% 100%, rgba(236, 72, 153, 0.15) 0px, transparent 50%);
  background-attachment: fixed;
  overflow-x: hidden;
}

#app {
  width: 100%;
  display: flex;
  min-height: 100vh;
}

/* Layout Utilities */
.app-container {
  display: flex;
  width: 100%;
}

.sidebar {
  width: 280px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border-right: var(--glass-border);
  display: flex;
  flex-direction: column;
  padding: 1.5rem;
  z-index: 10;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

/* Header / Tabs */
.top-header {
  height: 70px;
  border-bottom: var(--glass-border);
  display: flex;
  align-items: center;
  padding: 0 2rem;
  background: rgba(15, 23, 42, 0.5);
  backdrop-filter: var(--glass-blur);
  z-index: 10;
}

.content-area {
  flex: 1;
  overflow-y: auto;
  padding: 2rem;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: start;
}

.full-area {
  grid-template-columns: 1fr;
}

.content-area > * {
  min-width: 0;
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.1);
}
::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  letter-spacing: -0.025em;
}

h1 { font-size: 1.5rem; color: #fff; }
h2 { font-size: 1.25rem; color: #fff; }
p { line-height: 1.5; color: var(--text-muted); }

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

.animate-fade-in {
  animation: fadeIn 0.4s ease forwards;
}

@media (max-width: 1400px) {
  .sidebar {
    width: 240px;
    padding: 1.25rem;
  }

  .content-area {
    padding: 1.5rem;
    gap: 1.5rem;
  }
}

@media (max-width: 1200px) {
  .content-area {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  .app-container {
    flex-direction: column;
  }

  .sidebar {
    width: 100%;
    border-right: none;
    border-bottom: var(--glass-border);
    padding: 1rem;
  }

  .main-content {
    height: auto;
    min-height: calc(100vh - 140px);
  }

  .top-header {
    padding: 0 1rem;
  }

  .content-area {
    padding: 1rem;
    gap: 1rem;
  }
}