:root {
    /* Windows 11 Fluent Design Palette */
    --win-bg: #f3f3f3;
    --win-mica: rgba(255, 255, 255, 0.7);
    --win-accent: #0078d4;
    --win-accent-dark: #005a9e;
    --win-text: #1b1b1b;
    --win-text-sec: #5f5f5f;
    --win-border: rgba(0, 0, 0, 0.08);
    --win-shadow: 0 8px 16px rgba(0,0,0,0.1);
    --win-radius: 12px;
    --win-radius-sm: 6px;
    
    /* Status Colors */
    --hd-success: #107c10;
    --hd-error: #d83b01;
    --hd-warning: #ffb900;
    --hd-pending: #8764b8;
}

.hd-dashboard-wrapper {
    font-family: "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, sans-serif;
    color: var(--win-text);
    background: var(--win-bg);
    min-height: 800px;
    display: flex;
    flex-direction: column;
    padding: 0 !important;
    overflow: hidden;
    border: 1px solid var(--win-border);
    border-radius: var(--win-radius);
    box-shadow: var(--win-shadow);
}

/* Application Header (System Bar) */
.hd-header {
    background: var(--win-mica);
    backdrop-filter: blur(20px);
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    border-bottom: 1px solid var(--win-border);
    z-index: 100;
}

.hd-title {
    font-size: 18px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
}

.hd-title i { color: var(--win-accent); font-size: 20px; }

/* Sidebar Navigation (Taskbar Style) */
.hd-desktop-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.hd-sidebar {
    width: 280px;
    background: rgba(243, 243, 243, 0.5);
    backdrop-filter: blur(10px);
    border-right: 1px solid var(--win-border);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.hd-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    border-radius: var(--win-radius-sm);
    text-decoration: none;
    color: var(--win-text);
    font-size: 14px;
    font-weight: 500;
    transition: all 0.2s;
    cursor: pointer;
}

.hd-nav-item:hover { background: rgba(0,0,0,0.04); }
.hd-nav-item.active { background: #fff; box-shadow: 0 2px 4px rgba(0,0,0,0.05); color: var(--win-accent); }

/* Workspace (Main Content) */
.hd-workspace {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    background: linear-gradient(135deg, #ffffff 0%, #f9f9f9 100%);
}

/* Windows Widgets (Stats) */
.hd-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.hd-stat-card {
    background: #fff;
    border: 1px solid var(--win-border);
    border-radius: var(--win-radius);
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    transition: transform 0.2s;
}

.hd-stat-card:hover { transform: translateY(-2px); }

.hd-stat-value { font-size: 28px; font-weight: 700; color: var(--win-accent); }
.hd-stat-label { font-size: 12px; color: var(--win-text-sec); font-weight: 600; text-transform: uppercase; }

/* Search Bar (Fluent Style) */
.hd-search-container {
    position: relative;
    margin-bottom: 20px;
    max-width: 600px;
}

.hd-search-input {
    width: 100%;
    padding: 10px 16px 10px 40px;
    background: #fff;
    border: 1px solid var(--win-border);
    border-bottom: 2px solid var(--win-border);
    border-radius: var(--win-radius-sm);
    font-size: 14px;
    transition: all 0.2s;
}

.hd-search-input:focus {
    border-bottom-color: var(--win-accent);
    outline: none;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
}

.hd-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--win-text-sec);
}

/* Fluent Table */
.hd-table-container {
    background: #fff;
    border: 1px solid var(--win-border);
    border-radius: var(--win-radius);
    overflow: hidden;
}

.hd-table {
    width: 100%;
    border-collapse: collapse;
}

.hd-table th {
    background: #fafafa;
    padding: 14px 20px;
    text-align: left;
    font-size: 13px;
    color: var(--win-text-sec);
    border-bottom: 1px solid var(--win-border);
}

.hd-table td {
    padding: 16px 20px;
    border-bottom: 1px solid #f3f3f3;
    font-size: 14px;
}

.hd-table tr:hover td { background: #f9f9f9; }

/* Window Modal (Windows Style) */
#hd-modal {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.3);
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
}

.hd-modal-content {
    background: #fff;
    width: 900px;
    height: 80vh;
    border-radius: var(--win-radius);
    box-shadow: 0 32px 64px rgba(0,0,0,0.2);
    display: flex;
    flex-direction: column;
    border: 1px solid var(--win-border);
    animation: win-popup 0.3s ease-out;
}

@keyframes win-popup {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

.hd-modal-header {
    height: 48px;
    background: #f8f8f8;
    border-bottom: 1px solid var(--win-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    border-top-left-radius: var(--win-radius);
    border-top-right-radius: var(--win-radius);
}

.hd-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: 32px;
}

.hd-close {
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
    cursor: pointer;
    font-size: 20px;
}

.hd-close:hover { background: #e81123; color: #fff; }

/* Status Badges (Windows Style) */
.hd-badge {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.badge-new { background: #e1f0fe; color: #0078d4; }
.badge-in_progress { background: #fff4ce; color: #9d5d00; }
.badge-completed { background: #dff6dd; color: #107c10; }
.badge-rejected { background: #fde7e9; color: #a4262c; }

/* Buttons */
.hd-btn {
    padding: 8px 24px;
    border-radius: var(--win-radius-sm);
    font-size: 14px;
    font-weight: 500;
    border: 1px solid #ccc;
    background: #fff;
    cursor: pointer;
    transition: all 0.2s;
}

.hd-btn-primary {
    background: var(--win-accent);
    color: #fff;
    border: none;
}

.hd-btn-primary:hover { background: var(--win-accent-dark); }

/* Forms */
.hd-form-group label { display: block; font-size: 14px; font-weight: 600; margin-bottom: 6px; }
.hd-input, .hd-textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ccc;
    border-bottom: 2px solid #ccc;
    border-radius: 4px;
}

.hd-input:focus { border-bottom-color: var(--win-accent); outline: none; }

/* Dark Mode Support (Basic) */
.hd-dark-theme,
@media (prefers-color-scheme: dark) {
    :root {
        --win-bg: #1c1c1c;
        --win-text: #ffffff;
        --win-text-sec: #cccccc;
        --win-border: rgba(255, 255, 255, 0.1);
        --win-mica: rgba(28, 28, 28, 0.8);
    }
    .hd-sidebar { background: rgba(0,0,0,0.2); }
    .hd-stat-card, .hd-table-container, .hd-modal-content { background: #2b2b2b; color: #fff; }
    .hd-nav-item.active { background: #3b3b3b; color: var(--win-accent); }
    .hd-table th { background: #333; }
    .hd-table td { border-bottom-color: #333; }
    .hd-modal-header { background: #222; }
    .hd-input, .hd-textarea { background: #333; color: #fff; border-color: #444; }
}