:root {
    --bg-widget: #0d1117;
    --border: #30363d;
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.6), 0 2px 8px rgba(0, 0, 0, 0.4);
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --separator: #30363d;
    --btn-icon: #7d8590;
    --btn-hover-bg: #21262d;
    --btn-hover-text: #e6edf3;
    --accent: #388bfd;
    --overlay: rgba(0, 0, 0, 0.82);
    --modal-bg: #161b22;
    --modal-footer-bg: #161b22;
    --input-bg: #0d1117;
    --input-border: #30363d;
    --input-text: #e6edf3;
    --label-text: #c9d1d9;
    --hint-text: #8b949e;
    --input-focus: #388bfd;
    --input-focus-shadow: rgba(56, 139, 253, 0.2);
    --btn-bg: #21262d;
    --btn-text: #e6edf3;
    --btn-hover: #30363d;
    --btn-primary-bg: #238636;
    --btn-primary-border: #2ea043;
    --btn-primary-hover: #2ea043;
    --tooltip-bg: #1c2128;
    --tooltip-border: #444c56;
    --tooltip-text: #e6edf3;
    --error: #f85149;
    --spinner-track: #30363d;
    --status-text: #8b949e;
    --platform-icon: #e6edf3;
    --hm-0: #161b22;
    --hm-0-border: #30363d;
    --hm-1: #0e4429;
    --hm-2: #006d32;
    --hm-3: #26a641;
    --hm-4: #39d353;
}

body.theme-light {
    --bg-widget: #ffffff;
    --border: #d0d7de;
    --shadow: 0 4px 16px rgba(140, 149, 159, 0.22), 0 1px 4px rgba(27, 31, 36, 0.08);
    --text-primary: #1f2328;
    --text-secondary: #656d76;
    --separator: #d0d7de;
    --btn-icon: #656d76;
    --btn-hover-bg: #f3f4f6;
    --btn-hover-text: #1f2328;
    --accent: #0969da;
    --overlay: rgba(27, 31, 36, 0.4);
    --modal-bg: #ffffff;
    --modal-footer-bg: #ffffff;
    --input-bg: #ffffff;
    --input-border: #d0d7de;
    --input-text: #1f2328;
    --label-text: #1f2328;
    --hint-text: #656d76;
    --input-focus-shadow: rgba(9, 105, 218, 0.25);
    --btn-bg: #f6f8fa;
    --btn-text: #1f2328;
    --btn-hover: #eaeef2;
    --tooltip-bg: #ffffff;
    --tooltip-border: #d0d7de;
    --tooltip-text: #1f2328;
    --error: #cf222e;
    --spinner-track: #d0d7de;
    --status-text: #656d76;
    --platform-icon: #24292f;
    --hm-0: #ebedf0;
    --hm-0-border: #d0d7de;
    --hm-1: #9be9a8;
    --hm-2: #40c463;
    --hm-3: #30a14e;
    --hm-4: #216e39;
}

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

body {
    background: transparent;
    font-family: "Segoe UI", "Microsoft YaHei UI", "Microsoft YaHei", sans-serif;
    user-select: none;
    overflow: hidden;
    width: 100vw;
    height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.widget {
    background: var(--bg-widget);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 4px 5px 3px;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    gap: 0;
    box-shadow: var(--shadow);
    transition: background 0.2s, border-color 0.2s, box-shadow 0.2s;
}

.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    min-height: 20px;
    cursor: move;
    -webkit-app-region: drag;
}

.title-area {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: move;
    -webkit-app-region: drag;
    min-width: 0;
    flex: 1;
}

.platform-icon {
    width: 16px;
    height: 16px;
    color: var(--platform-icon);
    flex-shrink: 0;
    shape-rendering: geometricPrecision;
}

.username {
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0;
    line-height: 1.1;
}

.stats {
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 600;
    white-space: nowrap;
    line-height: 1.1;
}

.separator {
    color: var(--separator);
    margin: 0 2px;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.legend {
    display: flex;
    align-items: center;
    gap: 2px;
    flex-shrink: 0;
    cursor: move;
    -webkit-app-region: drag;
}

.heatmap-area {
    flex: 0 0 auto;
    width: 100%;
    line-height: 0;
    position: relative;
    cursor: move;
    -webkit-app-region: drag;
}

#heatmap-canvas {
    display: none;
    cursor: crosshair;
    -webkit-app-region: no-drag;
    vertical-align: top;
}

.status-msg {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    color: var(--status-text);
    font-size: 11px;
    font-weight: 600;
}

.status-msg.error {
    color: var(--error);
}

.spinner {
    width: 18px;
    height: 18px;
    border: 2px solid var(--spinner-track);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.legend-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
}

.legend-cell {
    width: 8px;
    height: 8px;
    border-radius: 2px;
}

.legend-cell[data-level="0"] {
    background: var(--hm-0);
    border: 1px solid var(--hm-0-border);
}

.legend-cell[data-level="1"] { background: var(--hm-1); }
.legend-cell[data-level="2"] { background: var(--hm-2); }
.legend-cell[data-level="3"] { background: var(--hm-3); }
.legend-cell[data-level="4"] { background: var(--hm-4); }

.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--overlay);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
    backdrop-filter: blur(4px);
    -webkit-app-region: no-drag;
    padding: 8px;
}

.modal-overlay.visible {
    display: flex;
}

body.settings-open .widget {
    pointer-events: none;
}

.modal {
    background: var(--modal-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px 18px 14px;
    width: min(320px, calc(100vw - 16px));
    max-height: calc(100vh - 16px);
    overflow-y: auto;
    box-shadow: var(--shadow);
    -webkit-app-region: no-drag;
    transition: background 0.2s, border-color 0.2s;
}

.modal-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.form-group {
    margin-bottom: 12px;
}

.form-group label {
    display: block;
    font-size: 12px;
    color: var(--label-text);
    margin-bottom: 5px;
    font-weight: 600;
}

.form-group input,
.form-group select {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 6px;
    padding: 8px 10px;
    color: var(--input-text);
    font-size: 13px;
    font-weight: 600;
    outline: none;
    transition: border-color 0.15s, background 0.15s;
    font-family: inherit;
    -webkit-app-region: no-drag;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 2px var(--input-focus-shadow);
}

.form-hint {
    font-size: 10px;
    font-weight: 600;
    color: var(--hint-text);
    margin-top: 4px;
    display: block;
    line-height: 1.4;
}

.form-error {
    display: none;
    margin-top: 6px;
    font-size: 11px;
    font-weight: 600;
    color: var(--error);
}

.form-error.visible {
    display: block;
}

.modal-footer {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
    position: sticky;
    bottom: 0;
    background: var(--modal-footer-bg);
}

.btn {
    padding: 7px 16px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid var(--border);
    background: var(--btn-bg);
    color: var(--btn-text);
    transition: background 0.12s;
    font-family: inherit;
    -webkit-app-region: no-drag;
}

.btn:hover {
    background: var(--btn-hover);
}

.btn.primary {
    background: var(--btn-primary-bg);
    border-color: var(--btn-primary-border);
    color: #fff;
}

.btn.primary:hover {
    background: var(--btn-primary-hover);
}

.tooltip {
    position: fixed;
    background: var(--tooltip-bg);
    border: 1px solid var(--tooltip-border);
    border-radius: 6px;
    padding: 5px 9px;
    font-size: 11px;
    font-weight: 600;
    color: var(--tooltip-text);
    pointer-events: none;
    display: none;
    z-index: 200;
    white-space: nowrap;
    box-shadow: var(--shadow);
}