:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --bg-card: #161b22;
    --border-color: #30363d;
    --border-light: #21262d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --accent-blue: #58a6ff;
    --accent-green: #238636;
    --accent-red: #da3633;
    --accent-yellow: #d29922;
    --btn-primary-bg: #238636;
    --btn-primary-hover: #2ea043;
    --input-bg: #0d1117;
    --shadow: rgba(0, 0, 0, 0.3);
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f6f8fa;
    --bg-tertiary: #eaeef2;
    --bg-card: #ffffff;
    --border-color: #d0d7de;
    --border-light: #eaeef2;
    --text-primary: #1f2328;
    --text-secondary: #656d76;
    --text-muted: #8c959f;
    --accent-blue: #0969da;
    --accent-green: #1a7f37;
    --accent-red: #cf222e;
    --accent-yellow: #9a6700;
    --btn-primary-bg: #1a7f37;
    --btn-primary-hover: #2da44e;
    --input-bg: #ffffff;
    --shadow: rgba(0, 0, 0, 0.1);
}

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

::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) var(--bg-tertiary);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
}

.hidden {
    display: none;
}

#loadingSection {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.loading-container {
    text-align: center;
    color: var(--text-secondary);
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

#loadingSection.hidden {
    display: none;
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-secondary);
}

.empty-state p {
    margin-bottom: 1rem;
}