:root {
    --bg-color: #f8f9fa; 
    --surface-color: #ffffff;
    --primary-color: #4a90e2; 
    --primary-hover: #357bd9;
    --text-color: #343a40; 
    --text-light: #6c757d;
    --border-color: #e9ecef;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.05), 0 5px 15px rgba(0, 0, 0, 0.05);
    --focus-ring: 0 0 0 4px rgba(74, 144, 226, 0.25);
    --accent-light: #f1f4f8; 
}

[data-theme='dark'] {
    --bg-color: #1a1e24; 
    --surface-color: #2c323c; 
    --primary-color: #25e2e5; 
    --primary-hover: #11caea;
    --text-color: #e9ecef;
    --text-light: #a0a8b3;
    --border-color: #495057;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.2), 0 5px 15px rgba(0, 0, 0, 0.2);
    --focus-ring: 0 0 0 4px rgba(105, 192, 130, 0.25);
    --accent-light: #3e444d;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.4s, color 0.4s;
    overflow: hidden;
    line-height: 1.6;
}

.toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 30px;
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--card-shadow);
    z-index: 100;
    position: sticky;
    top: 0;
}

.header-actions {
    display: flex;
    gap: 10px;
}

h1 {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--primary-color);
}

.container {
    padding: 30px;
    height: calc(100vh - 60px); 
    overflow-y: auto;
}

button, select {
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.2s, box-shadow 0.2s, transform 0.1s;
    color: var(--text-color);
    background-color: var(--bg-color);
    appearance: none;
}

button:hover, select:hover {
    background-color: var(--accent-light);
}

.primary-btn {
    color: white;
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.primary-btn:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

button:active {
    transform: scale(0.98);
}

.view {
    display: none;
    min-height: 100%;
}

.active-view {
    display: block;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
}

.dashboard-header h2 {
    font-size: 1.8rem;
    font-weight: 300;
    margin: 0;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
}

.project-card {
    background-color: var(--surface-color);
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.3s;
    cursor: pointer;
    border-left: 6px solid var(--primary-color);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.project-card h3 {
    margin: 0 0 10px 0;
    font-size: 1.4rem;
    font-weight: 600;
}

.project-card p {
    color: var(--text-light);
    font-size: 0.9rem;
}

.actions {
    display: flex;
    gap: 12px;
    margin-bottom: 25px;
    flex-wrap: wrap;
    background-color: var(--surface-color);
    padding: 15px;
    border-radius: 10px;
    box-shadow: var(--card-shadow);
    position: sticky;
    top: 75px; 
    z-index: 50;
}

.table-container {
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.data-table {
    width: 100%;
    min-width: 800px;
    border-collapse: separate; 
    border-spacing: 0;
    background-color: var(--surface-color);
}

.data-table th, .data-table td {
    padding: 12px 18px;
    min-width: 150px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
}

.data-table th {
    background-color: var(--accent-light);
    color: var(--text-color);
    font-weight: 600;
    cursor: pointer;
    position: sticky;
    top: 0;
    text-transform: uppercase;
    font-size: 0.9em;
}

.data-table tbody tr:nth-child(even) {
    background-color: var(--accent-light);
}

.data-table tbody tr:hover {
    background-color: rgba(74, 144, 226, 0.1);
}

.editable {
    outline: none;
    cursor: text;
}

.editable:focus {
    box-shadow: var(--focus-ring);
    border-radius: 2px;
}