:root {
    --primary: #3b82f6;     
    --bg: #121212;         
    --card-bg: #1e1e1e;    
    --text: #e2e8f0;        
    --text-muted: #94a3b8;   
    --border: #334155;     
    --header-bg: #1a1a1a;    
    --hover-bg: #2d3748;    
    --input-bg: #0f172a;   
    --success: #4ade80;      
    --danger: #f87171;       
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    background-color: var(--bg);
    color: var(--text);
}

.container {
    max-width: 1000px;
    margin: 40px auto;
    padding: 30px;
    background: var(--card-bg);
    border-radius: 8px;
    border: 1px solid var(--border);
    box-shadow: 0 4px 10px rgba(0,0,0,0.5);
}

header {
    background-color: var(--header-bg);
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 6px rgba(0,0,0,0.3);
}

.logos {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logos img {
    height: 40px !important;
    width: auto !important;
    max-width: 200px;
    object-fit: contain;
    filter: brightness(0) invert(1); 
}

.logos strong {
    font-size: 1.2em;
    margin-left: 10px;
    color: var(--text);
}

.big-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.big-logos img {
    height: 80px !important;
    width: auto !important;
    max-width: 300px;
    object-fit: contain;
    filter: brightness(0) invert(1);
}


a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #60a5fa;
}


a:visited {
    color: inherit;
}

.nav-links a {
    font-weight: bold;
    margin-left: 20px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

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

th {
    background-color: #0f172a;
    color: var(--text);
    border-bottom: 2px solid var(--primary);
}

th a, th a:visited {
    color: var(--text) !important;
    display: block;
    width: 100%;
}

tr:hover {
    background-color: var(--hover-bg);
    transition: background 0.2s;
}

input, select {
    background-color: var(--input-bg);
    color: var(--text);
    border: 1px solid var(--border);
    padding: 10px;
    margin: 5px 0;
    border-radius: 4px;
    width: 100%;
    box-sizing: border-box;
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary);
}

.filter-form {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    background: var(--bg);
    padding: 15px;
    border-radius: 5px;
    border: 1px solid var(--border);
}

button {
    background-color: var(--primary);
    color: white;
    padding: 10px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s ease;
    width: 100%;
}

button:hover {
    background-color: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.4);
}

.btn-secondary { background-color: #475569; }
.btn-secondary:hover { background-color: #334155; }

.dashboard-grid {
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
    gap: 20px; 
    margin-top: 30px;
}

.dash-card {
    background: var(--bg);
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.dash-card h3 { margin-top: 0; color: var(--primary); }
.dash-card p { color: var(--text-muted); font-size: 0.95em; margin-bottom: 20px; }


.alert {
    padding: 15px;
    background-color: rgba(74, 222, 128, 0.1);
    color: var(--success);
    border: 1px solid var(--success);
    border-radius: 4px;
    margin-bottom: 20px;
}

.expired { color: var(--danger); font-weight: bold; }
.active { color: var(--success); font-weight: bold; }
.text-muted { color: var(--text-muted); }


@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    .nav-links a {
        margin: 0 10px;
    }
    .filter-form {
        flex-direction: column;
    }
    .container {
        margin: 20px;
        padding: 20px;
    }
}