:root {
    /* Core Colors */
    --bg-dark: #05070A;
    --bg-dark-rgb: 5, 7, 10;
    --bg-surface: #0A0C10;
    --bg-surface-rgb: 10, 12, 16;

    /* Accents */
    --accent: #63EDFF;
    --accent-rgb: 99, 237, 255;
    --accent-hover: #85F1FF;
    --accent-dim: rgba(99, 237, 255, 0.1);

    /* Text */
    --text-primary: #E0E6F1;
    --text-secondary: #AAB6C5;
    --text-tertiary: #6B7280;

    /* Borders & Glass */
    --border-color: rgba(68, 255, 224, 0.15);
    --border-color-hover: rgba(68, 255, 224, 0.4);
    --card-bg: rgba(10, 12, 16, 0.6);
    --glass-blur: 16px;

    /* Status Colors */
    --color-success: #10B981;
    --color-error: #EF4444;
    --color-warning: #F59E0B;
    --color-info: #3B82F6;

    /* Spacing & Layout */
    --container-pad: 16px;
    --header-height: 80px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;

    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* Global Reset & Base Styles */
body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-sans);
    margin: 0;
    padding: 0;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Glass Card Utility */
.glass-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    -webkit-backdrop-filter: blur(var(--glass-blur));
    backdrop-filter: blur(var(--glass-blur));
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.glass-card:hover {
    border-color: var(--border-color-hover);
    box-shadow: 0 0 20px rgba(99, 237, 255, 0.1);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all 0.2s ease;
    cursor: pointer;
    border: 1px solid transparent;
    text-decoration: none;
    font-size: 0.95rem;
}

.btn--primary {
    background: rgba(99, 237, 255, 0.1);
    border-color: var(--accent);
    color: var(--accent);
}

.btn--primary:hover {
    background: var(--accent);
    color: var(--bg-dark);
    box-shadow: 0 0 15px rgba(99, 237, 255, 0.4);
}

.btn--secondary {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

.btn--secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.btn--full-width {
    width: 100%;
}

/* Form Controls */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-sans);
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(99, 237, 255, 0.1);
    background: rgba(0, 0, 0, 0.5);
}

/* Status Indicators */
.status {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 500;
}

.status--success {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.status--error {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-error);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.status--warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-warning);
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.status--info {
    background: rgba(59, 130, 246, 0.1);
    color: var(--color-info);
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Utilities */
.hidden {
    display: none !important;
}

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

.text-center {
    text-align: center;
}

.mb-4 {
    margin-bottom: 1rem;
}

.mt-4 {
    margin-top: 1rem;
}

/* Loading Animation */
.loader {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: inline-block;
    margin-right: 8px;
}

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

/* Mobile Responsiveness */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--container-pad);
    }

    .glass-card {
        padding: 1.5rem;
    }
}