:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --font-family: 'Inter', system-ui, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text);
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    padding-top: 3rem;
}

.app-container {
    width: 100%;
    max-width: 800px;
    padding: 0 1rem;
}

header {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    margin-bottom: 2rem;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-info h2 {
    margin: 0 0 0.25rem 0;
    font-size: 1.25rem;
}

.admin-info p {
    margin: 0;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.credits-badge {
    background: rgba(59, 130, 246, 0.2);
    color: var(--primary);
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.glass-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 1.5rem;
}

.login-card {
    max-width: 400px;
    margin: 0 auto;
}

.input-group {
    margin-bottom: 1rem;
}

.input-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
}

input {
    width: 100%;
    padding: 0.75rem;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    color: var(--text);
    border-radius: 6px;
    box-sizing: border-box;
}

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

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s;
}

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

.btn-danger { background: var(--danger); color: white; }
.btn-danger:hover { background: var(--danger-hover); }

.btn-outline {
    background: transparent;
    border: 1px solid var(--glass-border);
    color: var(--text);
}
.btn-outline:hover { background: rgba(255,255,255,0.1); }

.w-100 { width: 100%; }
.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }

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

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

th {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.85rem;
    text-transform: uppercase;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(0,0,0,0.7);
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(5px);
}

.modal-content {
    width: 100%;
    max-width: 400px;
    position: relative;
}

.close-modal {
    position: absolute;
    top: 1rem; right: 1.5rem;
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
}
.close-modal:hover { color: white; }

/* Footer */
.app-footer {
    text-align: center;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}
.app-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
}
.app-footer a:hover {
    text-decoration: underline;
}
.heart {
    display: inline-block;
    color: var(--danger);
    animation: heartbeat 1.5s infinite;
}
@keyframes heartbeat {
    0% { transform: scale(1); }
    15% { transform: scale(1.3); }
    30% { transform: scale(1); }
    45% { transform: scale(1.3); }
    60% { transform: scale(1); }
}

/* Responsividade / Mobile-First */
.table-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    width: 100%;
}

@media (max-width: 600px) {
    body {
        padding-top: 1.5rem;
    }
    
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    #logoutBtn {
        width: 100%;
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start !important;
        gap: 1rem;
    }
    
    .card-header button {
        width: 100%;
    }

    th, td {
        padding: 0.75rem 0.5rem;
        font-size: 0.85rem;
    }
    
    .glass-card {
        padding: 1rem;
    }
    
    .modal-content {
        width: calc(100% - 2rem);
        margin: 1rem;
    }
    
    .modal-actions {
        flex-direction: column;
    }
}