:root {
    --primary: #1d7768;
    --primary-dark: #15574c;
    --accent: #e67247;
    --bg-main: #e8e8e8;
    --card-bg: #ffffff;
    --text-main: #1f2937;
    --text-dim: #4b5563;
    --border-color: rgba(0, 0, 0, 0.1);
}

* { box-sizing: border-box; }

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    margin: 0;
    padding: 20px;
    min-height: 100vh;
}

.header {
    text-align: center;
    margin-bottom: 30px;
}

.header h1 {
    margin: 0;
    background: linear-gradient(to right, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 2.5rem;
}

.filter-container {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-bottom: 30px;
    margin-left: auto;
    margin-right: auto;
    max-width: 1200px;
    flex-wrap: wrap;
    background: var(--card-bg);
    padding: 15px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.2);
}

input[type="date"] {
    background: var(--card-bg);
    border: 1px solid var(--text-dim);
    color: var(--text-main);
    padding: 10px 15px;
    border-radius: 8px;
    font-family: 'Outfit', sans-serif;
    outline: none;
}

input[type="date"]:focus { border-color: var(--primary); }

#filter-btn {
    background: var(--primary-dark);
    color: white;
    border: none;
    padding: 10px 25px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: 0.3s;
}

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

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    max-width: 1200px;
    margin: auto;
}

.card {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 16px;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: relative;
}

.full-width { grid-column: 1 / -1; }
.half-width { grid-column: span 2; }

@media (max-width: 800px) {
    .half-width { grid-column: 1 / -1; }
}

.card h3 {
    margin-top: 0;
    font-size: 1.1rem;
    color: var(--text-dim);
    font-weight: 400;
    margin-bottom: 10px;
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 5px;
}

.chart-container { position: relative; height: 350px; width: 100%; }

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

th, td {
    padding: 12px 10px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    color: var(--text-dim);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8rem;
}

td.number { text-align: right; font-weight: 600; color: var(--accent); }

.loading {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 16px;
    z-index: 10;
    font-weight: 600;
    color: var(--primary);
    display: none;
}

.error-msg {
    color: #f87171;
    font-size: 0.9rem;
    margin-top: 10px;
    display: none;
}