:root {
  /* Premium Color Palette */
  --pk-bg: #0f172a; /* Deep Slate Blue Background */
  --pk-surface: rgba(30, 41, 59, 0.7); /* Glassy Surface */
  --pk-primary: #8b5cf6; /* Vivid Violet */
  --pk-secondary: #06b6d4; /* Cyan */
  --pk-accent: #f43f5e; /* Rose */
  --pk-text-main: #f8fafc;
  --pk-text-muted: #94a3b8;
  --pk-border: rgba(148, 163, 184, 0.1);
  --pk-radius: 16px;
  --pk-font: 'Inter', system-ui, -apple-system, sans-serif;
  --pk-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --pk-glow: 0 0 20px rgba(139, 92, 246, 0.3);
}

body {
    background-color: var(--pk-bg);
    color: var(--pk-text-main);
    font-family: var(--pk-font);
    margin: 0;
    padding: 0;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(6, 182, 212, 0.15) 0%, transparent 20%);
    min-height: 100vh;
}

/* Glassmorphism Utilities */
.glass-panel {
    background: var(--pk-surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--pk-border);
    border-radius: var(--pk-radius);
    box-shadow: var(--pk-shadow);
}

.glass-header {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--pk-border);
    position: sticky;
    top: 0;
    z-index: 50;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--pk-primary), #7c3aed);
    color: white;
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.6);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--pk-border);
    color: var(--pk-text-muted);
}

.btn-outline:hover {
    border-color: var(--pk-text-main);
    color: var(--pk-text-main);
    background: rgba(255,255,255,0.05);
}

/* Typography */
h1, h2, h3 {
    margin: 0;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.text-gradient {
    background: linear-gradient(to right, var(--pk-primary), var(--pk-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.grid {
    display: grid;
    gap: 2rem;
}

/* Form Elements */
input, select, textarea {
    width: 100%;
    padding: 0.75rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--pk-border);
    border-radius: 8px;
    color: white;
    font-family: inherit;
    transition: border-color 0.3s;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--pk-primary);
    box-shadow: 0 0 0 2px rgba(139, 92, 246, 0.2);
}

/* Cards */
.card {
    padding: 1.5rem;
}

/* Navigation */
.nav-link {
    color: var(--pk-text-muted);
    text-decoration: none;
    margin-left: 1.5rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover, .nav-link.active {
    color: var(--pk-primary);
}