:root {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --sidebar-bg: #0f172a;
    --text-color: #e2e8f0;
    --light-text-color: #94a3b8;
    --accent-color: #6366f1; /* Indigo */
    --accent-light: #818cf8;
    --border-color: rgba(255, 255, 255, 0.08);
    --success-color: #22c55e;
    --warning-color: #eab308;
    --danger-color: #ef4444;
    --info-color: #0ea5e9;
    --font-inter: 'Inter', sans-serif;
    --font-space-grotesk: 'Space Grotesk', sans-serif;
    --border-radius: 12px;
    --transition-speed: 0.3s ease-out;
    --shadow-light: 0 4px 6px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-medium: 0 10px 15px rgba(0, 0, 0, 0.2), 0 4px 6px rgba(0, 0, 0, 0.1);
}

body {
    margin: 0;
    font-family: var(--font-inter);
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Global Styles */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-space-grotesk);
    color: var(--text-color);
    margin-top: 0;
}

p {
    margin-bottom: 0.5rem;
}

input, textarea, button {
    font-family: var(--font-inter);
}

.dashboard-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    grid-template-rows: auto 1fr;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    grid-column: 1 / 2;
    grid-row: 1 / 3;
    background-color: var(--sidebar-bg);
    padding: 1.5rem 1rem;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
}

.sidebar-header {
    padding: 0 1rem 1.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1.5rem;
}

.logo {
    font-family: var(--font-space-grotesk);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--accent-color);
}

.sidebar-nav {
    flex-grow: 1;
}

.sidebar-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav li {
    margin-bottom: 0.5rem;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    color: var(--light-text-color);
    text-decoration: none;
    padding: 0.8rem 1rem;
    border-radius: var(--border-radius);
    transition: background-color var(--transition-speed), color var(--transition-speed);
    font-weight: 500;
}

.sidebar-nav a:hover {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--text-color);
}

.sidebar-nav li.active a {
    background-color: var(--accent-color);
    color: #fff;
    box-shadow: var(--shadow-medium);
}

.sidebar-nav a span {
    margin-right: 0.8rem;
    font-size: 1.2rem;
}

.user-profile-card {
    display: flex;
    align-items: center;
    background-color: var(--card-bg);
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-top: auto;
    border: 1px solid var(--border-color);
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--accent-light);
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 600;
    font-size: 1rem;
    margin-right: 1rem;
}

.user-info .user-name {
    font-weight: 600;
    color: var(--text-color);
}

.user-info .user-role {
    font-size: 0.85rem;
    color: var(--light-text-color);
}

/* Main Content */
.main-content {
    grid-column: 2 / 3;
    grid-row: 1 / 3;
    display: flex;
    flex-direction: column;
}

/* Top Header */
.top-header {
    background-color: var(--sidebar-bg);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    gap: 1.5rem; /* Added gap for better spacing */
}

.search-bar {
    flex-grow: 1;
    max-width: 400px;
}

.search-bar input {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 0.95rem;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

.search-bar input::placeholder {
    color: var(--light-text-color);
}

.search-bar input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.3);
    outline: none;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.notification-icon {
    position: relative;
    font-size: 1.5rem;
    color: var(--light-text-color);
    cursor: pointer;
}

.notification-icon .badge {
    position: absolute;
    top: -5px;
    right: -10px;
    background-color: var(--danger-color);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.2em 0.5em;
    border-radius: 50%;
    line-height: 1;
}

.header-actions .user-avatar {
    background-color: var(--accent-color);
}

/* Dashboard Grid */
.dashboard-grid {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    flex-grow: 1;
}

.card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-light);
    border: 1px solid var(--border-color);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.card h3, .card h4 {
    color: var(--text-color);
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.kpi-cards-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.kpi-card p {
    font-size: 0.9rem;
    color: var(--light-text-color);
    margin-bottom: 0.5rem;
}

.kpi-card h3 {
    font-size: 2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.change-positive {
    color: var(--success-color);
    font-size: 1rem;
    font-weight: 500;
}

.change-negative {
    color: var(--danger-color);
    font-size: 1rem;
    font-weight: 500;
}

.charts-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.chart-card h4 {
    text-align: left;
}

.chart-container {
    position: relative;
    width: 100%;
    height: 250px;
    overflow: visible;
}

.chart-container svg {
    overflow: visible;
}

.chart-container svg {
    width: 100%;
    height: 100%;
}

.chart-legend {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--light-text-color);
}

.legend-color-box {
    width: 14px;
    height: 14px;
    border-radius: 4px;
}

/* Data Table */
.data-table-card table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 0.8rem;
    text-align: left;
}

.data-table-card thead th {
    color: var(--light-text-color);
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.data-table-card tbody tr {
    background-color: var(--bg-color);
    border-radius: var(--border-radius);
    transition: background-color var(--transition-speed), box-shadow var(--transition-speed);
}

.data-table-card tbody tr:hover {
    background-color: rgba(99, 102, 241, 0.05);
    box-shadow: 0 0 0 1px var(--accent-color);
}

.data-table-card tbody td {
    padding: 1rem;
    border: none;
    color: var(--text-color);
    font-size: 0.95rem;
}

.data-table-card tbody tr td:first-child {
    border-top-left-radius: var(--border-radius);
    border-bottom-left-radius: var(--border-radius);
}

.data-table-card tbody tr td:last-child {
    border-top-right-radius: var(--border-radius);
    border-bottom-right-radius: var(--border-radius);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.4em 0.8em;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: capitalize;
}

.status-completed {
    background-color: rgba(34, 197, 94, 0.2);
    color: var(--success-color);
}

.status-in-progress {
    background-color: rgba(14, 165, 233, 0.2);
    color: var(--info-color);
}

.status-planning {
    background-color: rgba(234, 179, 8, 0.2);
    color: var(--warning-color);
}

.progress-bar-container {
    background-color: var(--bg-color);
    border-radius: 9999px;
    height: 8px;
    width: 100px;
    overflow: hidden;
    position: relative;
}

.progress-bar {
    height: 100%;
    background-color: var(--accent-color);
    border-radius: 9999px;
    width: 0%; /* Initial state for animation */
    transition: width 1s ease-out;
}

.progress-text {
    font-size: 0.8rem;
    color: var(--light-text-color);
    margin-left: 0.5rem;
}

/* Activity Feed */
.activity-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 0.8rem 0;
    border-bottom: 1px dashed var(--border-color);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 600;
    font-size: 0.9rem;
    color: #fff;
    flex-shrink: 0;
}

.activity-avatar.bg-blue { background-color: #3b82f6; }
.activity-avatar.bg-green { background-color: #22c55e; }
.activity-avatar.bg-purple { background-color: #a855f7; }
.activity-avatar.bg-red { background-color: #ef4444; }
.activity-avatar.bg-yellow { background-color: #eab308; }

.activity-details p {
    margin: 0;
    color: var(--text-color);
}

.activity-details p strong {
    color: #fff;
}

.activity-details em {
    font-style: normal;
    color: var(--accent-light);
}

.activity-details .timestamp {
    font-size: 0.8rem;
    color: var(--light-text-color);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .dashboard-layout {
        grid-template-columns: 1fr; /* Sidebar collapses */
        grid-template-rows: auto auto 1fr;
    }

    .sidebar {
        grid-column: 1 / 2;
        grid-row: 2 / 3;
        width: 100%;
        position: static;
        border-right: none;
        border-top: 1px solid var(--border-color);
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        padding: 1rem;
    }

    .sidebar-header, .user-profile-card {
        display: none; /* Hide for mobile collapsed sidebar */
    }

    .sidebar-nav ul {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.5rem;
    }

    .sidebar-nav li {
        margin-bottom: 0;
    }

    .sidebar-nav a {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    .sidebar-nav a span {
        margin-right: 0.5rem;
        font-size: 1rem;
    }

    .main-content {
        grid-column: 1 / 2;
        grid-row: 1 / 2; /* Main content comes before collapsed sidebar */
    }

    .top-header {
        padding: 1rem 1.5rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .search-bar {
        order: 2;
        max-width: 100%;
        flex-basis: 100%;
        margin-top: 1rem;
    }

    .header-actions {
        order: 1;
        width: 100%;
        justify-content: flex-end;
    }

    .dashboard-grid {
        padding: 1.5rem;
        gap: 1.5rem;
    }

    .kpi-cards-row, .charts-row {
        grid-template-columns: 1fr;
    }

    .data-table-card table {
        font-size: 0.85rem;
    }

    .data-table-card thead th, .data-table-card tbody td {
        padding: 0.8rem;
    }

    .status-badge {
        padding: 0.3em 0.6em;
        font-size: 0.7rem;
    }

    .progress-bar-container {
        width: 80px;
    }

    .activity-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 1rem 0;
    }

    .activity-avatar {
        margin-bottom: 0.5rem;
        margin-right: 0;
    }

    .activity-details p strong {
        display: block;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 3.5rem;
    }

    .hero .tagline {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .top-header {
        flex-direction: column;
        align-items: stretch;
    }

    .header-actions {
        justify-content: space-around;
        width: 100%;
        margin-top: 1rem;
    }

    .notification-icon, .header-actions .user-avatar {
        flex-grow: 1;
        text-align: center;
    }

    .sidebar-nav ul {
        flex-direction: column;
    }

    .sidebar-nav li {
        width: 100%;
    }

    .sidebar-nav a {
        justify-content: center;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero .tagline {
        font-size: 1.1rem;
    }

    section {
        padding: 3rem 1rem;
    }

    section h2 {
        font-size: 2rem;
    }

    .kpi-card h3 {
        font-size: 1.5rem;
    }

    .change-positive, .change-negative {
        font-size: 0.9rem;
    }
}